WO2007080805A1 - 高純度ジオールの工業的製造方法 - Google Patents
高純度ジオールの工業的製造方法 Download PDFInfo
- Publication number
- WO2007080805A1 WO2007080805A1 PCT/JP2006/326228 JP2006326228W WO2007080805A1 WO 2007080805 A1 WO2007080805 A1 WO 2007080805A1 JP 2006326228 W JP2006326228 W JP 2006326228W WO 2007080805 A1 WO2007080805 A1 WO 2007080805A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- distillation column
- tray
- chimney
- continuous multistage
- diol
- Prior art date
Links
- 150000002009 diols Chemical class 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 88
- 238000009776 industrial production Methods 0.000 title claims description 7
- 238000004821 distillation Methods 0.000 claims abstract description 202
- 238000009835 boiling Methods 0.000 claims abstract description 81
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 47
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 45
- 150000005676 cyclic carbonates Chemical class 0.000 claims abstract description 43
- 239000011541 reaction mixture Substances 0.000 claims abstract description 43
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000000066 reactive distillation Methods 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 32
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 191
- 238000011084 recovery Methods 0.000 claims description 26
- 229910052736 halogen Inorganic materials 0.000 claims description 21
- 150000002367 halogens Chemical class 0.000 claims description 21
- 239000012535 impurity Substances 0.000 claims description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 5
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 36
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 33
- -1 alkylene carbonates Chemical class 0.000 description 32
- 238000006243 chemical reaction Methods 0.000 description 30
- 238000004519 manufacturing process Methods 0.000 description 30
- 239000006227 byproduct Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 15
- 230000007774 longterm Effects 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 238000000926 separation method Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 239000011949 solid catalyst Substances 0.000 description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 125000001453 quaternary ammonium group Chemical group 0.000 description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 5
- 239000002815 homogeneous catalyst Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000003456 ion exchange resin Substances 0.000 description 4
- 229920003303 ion-exchange polymer Polymers 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052716 thallium Inorganic materials 0.000 description 4
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 4
- 238000005809 transesterification reaction Methods 0.000 description 4
- 239000010457 zeolite Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000003729 cation exchange resin Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- 239000002638 heterogeneous catalyst Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 3
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 description 2
- QDFXRVAOBHEBGJ-UHFFFAOYSA-N 3-(cyclononen-1-yl)-4,5,6,7,8,9-hexahydro-1h-diazonine Chemical compound C1CCCCCCC=C1C1=NNCCCCCC1 QDFXRVAOBHEBGJ-UHFFFAOYSA-N 0.000 description 2
- WADSJYLPJPTMLN-UHFFFAOYSA-N 3-(cycloundecen-1-yl)-1,2-diazacycloundec-2-ene Chemical compound C1CCCCCCCCC=C1C1=NNCCCCCCCC1 WADSJYLPJPTMLN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- ZXDVQYBUEVYUCG-UHFFFAOYSA-N dibutyltin(2+);methanolate Chemical class CCCC[Sn](OC)(OC)CCCC ZXDVQYBUEVYUCG-UHFFFAOYSA-N 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- 150000002611 lead compounds Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- YWWDBCBWQNCYNR-UHFFFAOYSA-N trimethylphosphine Chemical compound CP(C)C YWWDBCBWQNCYNR-UHFFFAOYSA-N 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- KJIOQYGWTQBHNH-UHFFFAOYSA-N undecanol Chemical compound CCCCCCCCCCCO KJIOQYGWTQBHNH-UHFFFAOYSA-N 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-NMQOAUCRSA-N 1,2-dideuteriooxyethane Chemical compound [2H]OCCO[2H] LYCAIKOWRPUZTN-NMQOAUCRSA-N 0.000 description 1
- RAZWADXTNBRANC-UHFFFAOYSA-N 1,2-dimethylcyclohexan-1-ol Chemical compound CC1CCCCC1(C)O RAZWADXTNBRANC-UHFFFAOYSA-N 0.000 description 1
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- BUCJHJXFXUZJHL-UHFFFAOYSA-N 1-ethylcyclohexan-1-ol Chemical compound CCC1(O)CCCCC1 BUCJHJXFXUZJHL-UHFFFAOYSA-N 0.000 description 1
- LPCWIFPJLFCXRS-UHFFFAOYSA-N 1-ethylcyclopentan-1-ol Chemical compound CCC1(O)CCCC1 LPCWIFPJLFCXRS-UHFFFAOYSA-N 0.000 description 1
- CAKWRXVKWGUISE-UHFFFAOYSA-N 1-methylcyclopentan-1-ol Chemical compound CC1(O)CCCC1 CAKWRXVKWGUISE-UHFFFAOYSA-N 0.000 description 1
- DTTDXHDYTWQDCS-UHFFFAOYSA-N 1-phenylcyclohexan-1-ol Chemical compound C=1C=CC=CC=1C1(O)CCCCC1 DTTDXHDYTWQDCS-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- ZSPTYLOMNJNZNG-UHFFFAOYSA-N 3-Buten-1-ol Chemical compound OCCC=C ZSPTYLOMNJNZNG-UHFFFAOYSA-N 0.000 description 1
- MQWCXKGKQLNYQG-UHFFFAOYSA-N 4-methylcyclohexan-1-ol Chemical compound CC1CCC(O)CC1 MQWCXKGKQLNYQG-UHFFFAOYSA-N 0.000 description 1
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- ZALOHOLPKHYYAX-UHFFFAOYSA-L CO[Ti](Cl)(Cl)OC Chemical compound CO[Ti](Cl)(Cl)OC ZALOHOLPKHYYAX-UHFFFAOYSA-L 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 1
- KFMCTMBLJIQCGV-UHFFFAOYSA-N OC(O)COC(O)=O Chemical compound OC(O)COC(O)=O KFMCTMBLJIQCGV-UHFFFAOYSA-N 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- 229910020220 Pb—Sn Inorganic materials 0.000 description 1
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- AWMVMTVKBNGEAK-UHFFFAOYSA-N Styrene oxide Chemical compound C1OC1C1=CC=CC=C1 AWMVMTVKBNGEAK-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- GCTFWCDSFPMHHS-UHFFFAOYSA-M Tributyltin chloride Chemical class CCCC[Sn](Cl)(CCCC)CCCC GCTFWCDSFPMHHS-UHFFFAOYSA-M 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- JJLKTTCRRLHVGL-UHFFFAOYSA-L [acetyloxy(dibutyl)stannyl] acetate Chemical class CC([O-])=O.CC([O-])=O.CCCC[Sn+2]CCCC JJLKTTCRRLHVGL-UHFFFAOYSA-L 0.000 description 1
- INNSZZHSFSFSGS-UHFFFAOYSA-N acetic acid;titanium Chemical compound [Ti].CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O INNSZZHSFSFSGS-UHFFFAOYSA-N 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- FBFXQVWMDXHMJW-UHFFFAOYSA-N benzhydryloxytin Chemical class C=1C=CC=CC=1C(O[Sn])C1=CC=CC=C1 FBFXQVWMDXHMJW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- FHADSMKORVFYOS-UHFFFAOYSA-N cyclooctanol Chemical compound OC1CCCCCCC1 FHADSMKORVFYOS-UHFFFAOYSA-N 0.000 description 1
- XCIXKGXIYUWCLL-UHFFFAOYSA-N cyclopentanol Chemical compound OC1CCCC1 XCIXKGXIYUWCLL-UHFFFAOYSA-N 0.000 description 1
- 238000006114 decarboxylation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- XGZNHFPFJRZBBT-UHFFFAOYSA-N ethanol;titanium Chemical compound [Ti].CCO.CCO.CCO.CCO XGZNHFPFJRZBBT-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- ZEIWWVGGEOHESL-UHFFFAOYSA-N methanol;titanium Chemical compound [Ti].OC.OC.OC.OC ZEIWWVGGEOHESL-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- DIAIBWNEUYXDNL-UHFFFAOYSA-N n,n-dihexylhexan-1-amine Chemical compound CCCCCCN(CCCCCC)CCCCCC DIAIBWNEUYXDNL-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- FYWSTUCDSVYLPV-UHFFFAOYSA-N nitrooxythallium Chemical compound [Tl+].[O-][N+]([O-])=O FYWSTUCDSVYLPV-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- RGCLLPNLLBQHPF-HJWRWDBZSA-N phosphamidon Chemical compound CCN(CC)C(=O)C(\Cl)=C(/C)OP(=O)(OC)OC RGCLLPNLLBQHPF-HJWRWDBZSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- 150000003476 thallium compounds Chemical class 0.000 description 1
- YTQVHRVITVLIRD-UHFFFAOYSA-L thallium sulfate Chemical compound [Tl+].[Tl+].[O-]S([O-])(=O)=O YTQVHRVITVLIRD-UHFFFAOYSA-L 0.000 description 1
- 229940119523 thallium sulfate Drugs 0.000 description 1
- 229910000374 thallium(I) sulfate Inorganic materials 0.000 description 1
- DASUJKKKKGHFBF-UHFFFAOYSA-L thallium(i) carbonate Chemical compound [Tl+].[Tl+].[O-]C([O-])=O DASUJKKKKGHFBF-UHFFFAOYSA-L 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical class [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical compound CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 description 1
- RXJKFRMDXUJTEX-UHFFFAOYSA-N triethylphosphine Chemical compound CCP(CC)CC RXJKFRMDXUJTEX-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- 229940057402 undecyl alcohol Drugs 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/008—Liquid distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
- B01D3/20—Bubble caps; Risers for vapour; Discharge pipes for liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/22—Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or grids; Construction of sieve plates or grids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C27/00—Processes involving the simultaneous production of more than one class of oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/128—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by alcoholysis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
- C07C68/065—Preparation of esters of carbonic or haloformic acids from organic carbonates from alkylene carbonates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Definitions
- the present invention is a method in which a cyclic carbonate and an aliphatic monohydric alcohol are continuously supplied to a reactive distillation column, a reactive distillation method is performed, and the distillate continuously extracted from the bottom of the reactive distillation column.
- a reactive distillation method is performed from the high-boiling point reaction mixture mainly composed of thiols, a substance having a boiling point lower than that of the diol is distilled off in a continuous multistage distillation column, and then the bottom component of the continuous multistage distillation column is continuously added having a specific structure.
- This is an industrial production method for high-purity diols in which diol is continuously obtained as a side-cut component using a multistage distillation column.
- the present inventors first disclosed a reactive distillation method for producing a dialkyl carbonate and a diol from a reaction between a cyclic carbonate and an aliphatic monohydric alcohol (Patent Documents 1 to 10). Has also been filed (Patent Documents 11 to 15) using a reactive distillation system. When reactive distillation is used for this reaction, it is possible to proceed with a high reaction rate.
- the reactive distillation method that has been proposed so far relates to a method for producing a small amount of dialkyl carbonate and diol, and a short-term production method. It was not related to stable production.
- the goal of stably producing zeol in large quantities eg 1 ton or more per hour
- a long period eg 1000 hours or more, preferably 3000 hours or more, more preferably 5000 hours or more
- the height (H: cm) and diameter (H: cm) of the reactive distillation column disclosed in this embodiment are disclosed for producing dimethyl carbonate (DMC) and ethylendalcol (EG) from ethylene carbonate and methanol.
- Table 1 shows the maximum values for D: cm), number of plates (n), ethylene glycol production P (kgZhr), and continuous production time T (hr).
- Patent Literature H cm D: cm Number of steps: n P: kg / hr T: hr
- the present inventors have proposed an industrial reactive distillation method capable of stably continuing large-scale production of dialkyl carbonates and diols for a long period of time with a high yield and a high selectivity.
- the bottom force of the tower A method capable of separating and purifying a large amount of high-purity diol from a high boiling point reaction mixture that is continuously extracted in a large amount for a long time is necessary. There is a need for a method of producing in high yield.
- the present invention has been made to achieve this object.
- a method for producing a diol having a relatively high purity using a reactive distillation and a diol purification column a method for obtaining a diol from a side cut of the diol purification column is also known.
- the high boiling point reaction mixture extracted from the lower part of the reactive distillation column is supplied to a thin film evaporator ( ⁇ ), and the high boiling point substance obtained there is converted into a thin film.
- the low boiling point evaporate obtained there was supplied to the distillation apparatus (IV) and supplied to the distillation column (V II), and ethylene glycol was obtained as a side cut component (22) in the concentration section of the distillation column (VII).
- the method of Patent Document 12 Shows that high-purity ethylene glycol can be obtained from a high-boiling-point reaction mixture only by using four purification units.
- the method of Patent Document 12 is a method for producing a small amount of ethylene glycol, and is a method for stably producing a large amount (for example, 1 ton Zhr or more) of diol for a long time (for example, 5000 hours or more). No suggestions! /.
- Example 1 (Fig. 5) of Patent Document 15
- the high boiling point reaction mixture extracted from the lower part of the reactive distillation column is supplied to the second distillation column (4) and obtained there.
- the high boiling point substance was fed to the hydrolysis reactor (7), and the reaction mixture was fed to the decarboxylation tank (gas-liquid separator: 8), where the liquid components obtained were transferred to the third distillation column (10).
- ethylene glycol is produced at a production rate of 19 kgZhr.
- 0.2% by mass of diethylene glycol is contained in the obtained ethylene glycol.
- the method of Patent Document 15 requires an additional one or more stages of purification equipment in order to obtain the high-purity ethylene glycol necessary as a raw material for PET fibers and PET resin. That is, in the method of Patent Document 15, the side force extraction loca installed in the recovery section below the supply port to the distillation column is also capable of obtaining ethylene glycol, and its purity is insufficient.
- the method of Patent Document 15 is a method for producing a small amount of ethylene glycol, which is a method for stably producing a large amount (for example, 1 ton Zhr or more) of diol for a long time (for example, 5000 hours or more) !, Any suggestion! /.
- Example 10 Fig. 6 of Patent Document 8 and Example 1 ( Figure 1) of Patent Document 9
- the concentrating unit located above the supply port to the EG purification tower (41) is used.
- the installed side-cut extractors Loka et al. Have the ability to produce high-purity ethylene glycol, both of which are produced in small quantities of less than 200 gZhr, and a large amount (for example, 1 ton Zhr or more) of diol for a long time (for example, 50 (00 hours or more)
- Ethylene glycol is produced in the world about 16 million tons (2004) annually, but until now all of this was a hydration method in which water was added to ethylene oxide.
- Non-Patent Document 1 states that “EG (ethylene glycol) is produced by the hydration reaction of EO (ethylene oxide), and the reaction is usually carried out at 150-200 °. , DEG (diethylene glycol) and TEG (triet Render Recall) is a by-product. These generation ratios depend on the water ZEO ratio, and in order to obtain MEG with a selectivity of about 90%, the water ZEO ratio needs to be about 20 in molar ratio. For this reason, it is necessary to distill off a large amount of water in the purification process of EG, and a large amount of heat energy is consumed here.
- EO ethylene glycol
- TEG triet Render Recall
- Patent Document 1 JP-A-4 198141
- Patent Document 2 Japanese Patent Laid-Open No. 4-230243
- Patent Document 3 Japanese Patent Laid-Open No. 9 176061
- Patent Document 4 Japanese Patent Laid-Open No. 9-183744
- Patent Document 5 Japanese Patent Laid-Open No. 9-194435
- Patent Document 6 International Publication W097Z23445 (European Patent No. 0889025, US Patent No. 5847189)
- Patent Document 7 International Publication W099Z64382 (European Patent No. 1086940, US Patent No. 6346638)
- Patent Document 8 International Publication WO00Z51954 (European Patent No. 1174406, US Patent No. 6479689)
- Patent Document 9 Japanese Patent Laid-Open No. 2002-308804
- Patent Document 10 Japanese Unexamined Patent Application Publication No. 2004-131394
- Patent Document 11 Japanese Patent Laid-Open No. 5-213830 (European Patent No. 0530615, US Patent No. 5231212)
- Patent Document 12 JP-A-6-9507 (European Patent No. 0569812, US Patent No. 5359118)
- Patent Document 13 Japanese Patent Laid-Open No. 2003-119168 (International Publication WO03Z006418)
- Patent Document 14 Japanese Patent Laid-Open No. 2003-300936
- Patent Document 15 Japanese Patent Application Laid-Open No. 2003-342209
- Non-Patent Document 1 Petroleum Society, “Petrochemical Process” 120-125 Kodansha 2001 Disclosure of the invention
- the problem to be solved by the present invention is that a cyclic carbonate and an aliphatic monohydric alcohol are used as raw materials, and this raw material is continuously fed into a continuous multistage distillation column A in which a catalyst is present.
- the low-boiling point reaction mixture (A) containing dialkyl carbonate and the aliphatic monohydric alcohol produced from the upper part of the column was continuously withdrawn in the gaseous state,
- the high boiling point reaction mixture (A) containing diols produced from the liquid is continuously extracted in a liquid state
- the high-boiling reaction mixture (A) is continuously fed to a continuous multistage distillation column C, and the high-boiling reaction
- a substance having a lower boiling point than the diol contained in the mixture (A) is added to the top component (C) and
- the bottom component (C) obtained by distilling off as B T Z or side cut component (C) is continuously multistage.
- a high-purity diol is produced by continuously supplying to the distillation column E, and obtaining the diol as the side-cut-extracted locust-cut component (E) of the continuous multistage distillation column E.
- high-purity diol can be stably produced in an amount of 1 ton or more per hour for a long time (for example, 1000 hours or more, preferably 3000 hours or more, more preferably 5000 hours or more). It is to provide a specific inexpensive industrial device and industrial manufacturing method.
- this raw material is continuously fed into continuous multi-stage distillation column A where the catalyst is present, and reactive distillation is performed in the column A to produce from the top of the column.
- the low boiling point reaction mixture (A) containing the dialkyl carbonate and the aliphatic monohydric alcohol is continuously withdrawn in the form of a gas, and a high diol containing diols formed from the lower part of the column.
- the boiling point reaction mixture (A) is continuously withdrawn in liquid form, and the high boiling point reaction mixture (A) is continuously extracted.
- the bottom component (C) obtained by distilling off the lower boiling point substance as the top component (c T) and Z or side cut component (c S) is continuously fed to the continuous multistage distillation column E. And the ream
- the side-cut extraction loca from the multistage distillation column E is also diol as a side-cut component (E).
- the continuous multi-stage distillation column E has a length L ⁇ cm inner diameter D cm) satisfying the following formulas (1) to (9), an internal recovery unit having the number n of stages, and a length L (cm), inner diameter D (cm)
- a distillation column comprising an internal concentration part having an internal number n of stages
- the perforated plate tray has 150 to 1200 holes per area lm 2 of the perforated plate portion, and the cross-sectional area per hole is 0.5 to 5 cm 2
- the perforated plate tray has perforated plate area 200 to lm 2 : L: 100 holes
- cross-sectional area per hole is from 0.7 to 4 cm 2 .
- the perforated plate tray has 250 to L000 holes per area lm 2 of the perforated plate portion, and the cross-sectional area per hole is 0.9 to 3 cm 2. 9. The method according to any one of items 6 to 8 above,
- Opening ratio of the perforated plate tray in the recovery section of the continuous multi-stage distillation column E (ratio of the total cross-sectional area of the holes in the first stage of the tray and the area of the tray) 1S 3 to 25% 10.
- Opening ratio of the perforated plate tray in the concentrating part of the continuous multi-stage distillation column E (the ratio of the total cross-sectional area of the holes in the first tray and the area of the tray) 1S 2-20% 10.
- the opening ratio of the chimney tray (ratio of the total cross-sectional area of the chimney's opening and the area of the chimney tray including the entire area of the opening) is in the range of 5 to 40%.
- the purity of the diol in the side cut component (E) is 99.9% or more.
- this raw material is continuously fed into continuous multistage distillation column A in which a catalyst exists, and reactive distillation is carried out in the column A. From the top of the column Low boiling point reaction mixture containing the dialkyl carbonate to be produced and the aliphatic monohydric alcohol (A)
- T is continuously withdrawn in the form of gas, and the high boiling point reaction mixture (A) containing diols generated from the bottom of the column is continuously withdrawn in liquid form, and the high boiling point reaction mixture (A)
- the bottom component (C) obtained by distillation is continuously fed to the continuous multistage distillation column E.
- the continuous multi-stage distillation column E has a recovery section having an internal length L (cm) satisfying the following formulas (1) to (9), an inner diameter D (cm), and an internal number n of stages: Length L (cm), inner diameter D (cm)
- a distillation column comprising an internal concentration part having an internal number n of stages, 400 L ⁇ 3000 formula (1)
- a side-cut extraction loca provided to continuously extract liquid high-purity diol from the continuous multi-stage distillation column E.
- the continuous multi-stage is connected to a liquid reservoir of the chimney tray. Distillation tower,
- the perforated plate tray has 150 to 1200 holes per area lm 2 of the perforated plate portion, and the cross-sectional area per hole is 0.5 to 5 cm 2.
- the perforated plate tray has 200 to 200 L per area lm 2 of the perforated plate portion, and the cross-sectional area per hole is 0.7 to 4 cm 2 .
- the perforated plate tray has 250 to about lm 2 per area of the perforated plate portion: LOOO holes, and the cross-sectional area per hole is 0.9 to 3 cm 2.
- the continuous multi-stage distillation column according to any one of items 23 and 25,
- the opening ratio of the perforated plate tray in the collection section (ratio of the total cross-sectional area of the holes in one tray and the area of the tray) is in the range of 3 to 25%, the preceding items 23 to The continuous multistage distillation column according to any one of 26,
- the opening ratio of the perforated plate tray in the concentrating portion (the ratio of the total cross-sectional area of the holes in one tray and the area of the tray) is in the range of 2 to 20% of the preceding item 23 to Continuous multistage distillation column according to any one of 27,
- the opening ratio of the chimney tray (ratio of the total cross-sectional area of the chimney's opening and the area of the chimney tray including the entire area of the opening) is in the range of 5 to 40%.
- the continuous multistage distillation column according to any one of items 23 to 28,
- a high yield for example, based on the cyclic carbonate used, is generally 97% from the cyclic carbonate and the aliphatic monohydric alcohol.
- a high purity diol having a purity of 99.9% or more required as a raw material for PET fiber or PET resin is used in an amount of 1 ton or more per hour for a long time (for example, 1000 More than 3,000 hours, preferably more than 3,000 hours, more preferably more than 5,000 hours) Industrial equipment and industrial manufacturing methods are provided.
- the method of the present invention can produce high-purity ethylene glycol with high yield and high selectivity without using a large amount of water.
- the reaction of the present invention is a reversible equilibrium transesterification reaction represented by the following formula in which a dialkyl carbonate and a diol are produced from a cyclic carbonate and an aliphatic monohydric alcohol.
- R 1 represents a divalent group — (CH 2) m- (m is an integer of 2 to 6), and one or more of its water
- the element may be substituted by an alkyl group having 1 to 10 carbon atoms or a allyl group.
- R 2 represents a monovalent aliphatic group having 1 to 12 carbon atoms, and one or more hydrogens thereof may be substituted with an alkyl group having 1 to 10 carbon atoms or a aryl group.
- the cyclic carbonate used as a raw material in the present invention is a compound represented by (A) in the above formula, for example, alkylene carbonates such as ethylene carbonate and propylene carbonate, and 1,3-dioxacyclo Hexar 2-one, 1,3-dioxacyclohepter 2-one, etc. are preferably used, ethylene carbonate and propylene carbonate are more preferably used from the viewpoint of availability, and ethylene carbonate is particularly preferably used. .
- the other raw material aliphatic monohydric alcohols
- (B) is represented by (B) in the above formula.
- a compound having a boiling point lower than that of the produced diol is used. Therefore, power that can vary depending on the type of cyclic carbonate used.
- aliphatic monohydric alcohols those having 1 to 6 carbon atoms are preferably used, and more preferably methanol, ethanol, propanol (each heterogeneous substance), butanol ( Each isomer) is an alcohol having 1 to 4 carbon atoms.
- methanol and ethanol are preferable, and methanol is particularly preferable.
- a catalyst is present in the reactive distillation column A. Any method may be used for the catalyst to exist. For example, in the case of a homogeneous catalyst that dissolves in the reaction solution under the reaction conditions, the catalyst is continuously supplied into the reactive distillation column.
- the catalyst can be present in the liquid phase in the reactive distillation column, or in the case of a heterogeneous catalyst that does not dissolve in the reaction solution under the reaction conditions, a solid catalyst can be placed in the reactive distillation column.
- a catalyst may be present in the reaction system, or a method using these in combination may be used.
- cyclic carbonate and It may be supplied at the same time as Z and aliphatic l-valent alcohol, or may be supplied at a position different from the raw material. Since the reaction actually proceeds in the distillation column in a region below the catalyst supply position, it is preferable to supply the catalyst to a region between the top of the column and the raw material supply position.
- the number of stages in which the catalyst is present needs to be 5 or more, preferably 7 or more, and more preferably 10 or more.
- the number of stages in which the catalyst exists needs to be 5 or more, preferably 7 or more, and more preferably 10 or more.
- a solid catalyst that also has an effect as a packing for a distillation column can be used.
- Alkali metals and alkaline earth metals such as lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, and nor;
- Basic compounds such as alkali metal and alkaline earth metal hydrides, hydroxides, alkoxides, alicyclic oxides, amidides, and the like;
- Basic compounds such as alkali metal and alkaline earth metal carbonates, bicarbonates, organic acid salts;
- Tertiary amines such as triethylamine, tributylamine, trihexylamine, benzyljetylamine;
- Cyclic amidines such as diazabicycloundecene (DBU) and diazabicyclononene (DBN);
- Thallium compounds such as acid thallium, halogen thallium, hydroxide thallium, thallium carbonate, thallium nitrate, thallium sulfate, organic acid salts of thallium;
- Aluminum compounds such as aluminum trimethoxide, aluminum triisopropoxide, aluminum tributoxide;
- Titanium compounds such as tetramethoxytitanium, tetraethoxytitanium, tetrabutoxytitanium, dichlorodimethoxytitanium, tetraisopropoxytitanium, titanium acetate, titanium acetylethyltonate;
- Phosphorus compounds such as trimethylphosphine, triethylphosphine, tributylphosphine, triphenylphosphine, tributylmethylphosphonium halide, trioctylbutylphosphonium halide, trimethylmethylphosphonium halide, etc .;
- Zirconium compounds such as zirconium halide, zirconium acetyl cetate, zirconium alkoxide, zirconium acetate;
- Lead hydroxides such as Pb (OH), PbO (OH), Pb [PbO (OH)], PbO (OH);
- Lead carbonates such as PbCO, 2PbCO 2 -Pb (OH) and their basic salts;
- Organic lead compounds such as bO (Bu represents a butyl group, Ph represents a phenyl group); Pb—Na ⁇ Pb—Ca, Pb—Ba, Pb—Sn, Pb—Sb, and other alloys; lead minerals such as howenite, senyanite, and hydrates of these lead compounds; Can be mentioned.
- These compounds can be used as homogeneous catalysts when they are dissolved in reaction raw materials, reaction mixtures, reaction by-products and the like, and can be used as solid catalysts when they are not dissolved. Furthermore, it is also preferable to use a mixture obtained by dissolving these compounds in advance with reaction raw materials, reaction mixtures, reaction by-products or the like, or using a mixture obtained by reacting them as a homogeneous catalyst.
- an anion exchange resin having a tertiary amino group an ion exchange resin having an amide group, an ion exchange resin having at least one exchange group of a sulfonic acid group, a carboxylic acid group, and a phosphoric acid group.
- Ion exchangers such as solids and strongly basic ion exchangers having quaternary ammonium groups as exchange groups; silica, silica alumina, silica-magnesia, aluminosilicates, gallium silicates, various zeolites
- Solid inorganic compounds such as various metal exchange zeolites and amorphous exchange zeolites are used as heterogeneous catalysts.
- a solid strong basic ion exchanger having a quaternary ammonium group as an exchange group is particularly preferably used.
- Strongly basic ion exchange resin having a quaternary ammonia group as an exchange group Cellulose strongly basic ion exchange material having a quaternary ammonia group as an exchange group, quaternary ammonia
- An inorganic carrier-supporting strong basic anion exchanger having a hum group as an exchange group may be mentioned.
- the strongly basic cation exchange resin having a quaternary ammonium group as an exchange group for example, a styrenic strongly basic cation exchange resin is preferably used.
- a styrene-based strongly basic ion exchange resin is a strong compound having a quaternary ammonia (type I or type II) in the exchange group based on a copolymer of styrene and dibutenebenzene.
- This is a basic cation exchange resin, for example, schematically represented by the following formula.
- X represents a key-on, and usually X includes F-, Cl_, Br ", ⁇ , HCO-, CO
- MR type macroreticular type
- misalignment can be used, but organic solvent resistance is high, and point type MR type is particularly preferable.
- Examples of the strong cellulose basic ion exchanger having a quaternary ammonium group as an exchange group include, for example, trialkylaminoethylation of a part or all of —OH groups of cellulose. Examples thereof include cellulose having an exchange group of OCH CH NR X obtained.
- R represents an alkyl group, and methyl, ethyl, propyl, butyl and the like are usually used, and methyl and ethyl are preferably used.
- X represents an anion as described above.
- the inorganic carrier-supporting strong basic ion exchanger having a quaternary ammonium group as an exchange group that can be used in the present invention is a part or all of the surface hydroxyl group OH of the inorganic carrier.
- a quaternary ammonia group 0 (CH) nNR X Means By introducing a quaternary ammonia group 0 (CH) nNR X Means.
- R and X are as described above.
- silica, alumina, silica alumina, titer, zeolite and the like can be used, preferably silica, alumina and silica alumina are used, and silica is particularly preferably used.
- any method for modifying the surface hydroxyl group of the inorganic carrier any method can be used.
- the solid strongly basic ion exchanger having a quaternary ammonium group as an exchange group a commercially available product can also be used. In that case, it can be used as a transesterification catalyst after performing ion exchange with a desired cation species in advance as a pretreatment.
- a solid catalyst composed of potato is also preferably used as the transesterification catalyst.
- solid catalysts in which some or all of these nitrogen-containing heterocyclic groups are quaternized are also used.
- a solid catalyst such as an ion exchanger can also function as a packing.
- the amount of the catalyst used in the present invention varies depending on the type of catalyst used, but when a homogeneous catalyst that is dissolved in the reaction solution under the reaction conditions is continuously supplied, and Table Wa as a percentage of the total mass of a cyclic carbonate and an aliphatic monohydric alcohol, usually from 0.0001 to 50 mass 0/0, preferably from 0.005 to 20 mass 0/0, more preferably from 0.01 to 10 Used in mass%.
- a solid catalyst when a solid catalyst is used in the distillation column, it is 0.01 to 75% by volume, preferably 0.05 to 60% by volume, based on the empty column volume of the distillation column.
- a catalyst amount of 0.1 to 60% by volume is preferably used.
- the method for continuously supplying cyclic carbonate and aliphatic monohydric alcohol to continuous multistage distillation column A which is a reactive distillation column is not particularly limited. Any supply method can be used as long as it can contact with the catalyst in the region of at least 5 stages, preferably 7 stages or more, more preferably 10 stages or more in the column A. That is, the cyclic carbonate and the aliphatic monohydric alcohol can be continuously supplied as many times as the number of introduced loci required for the stage satisfying the above conditions of the continuous multistage distillation column A. Also, the cyclic carbonate and the aliphatic monohydric alcohol are the same in the distillation column. It can be installed in a stage, or it can be installed in a separate stage.
- the raw material is continuously supplied to the distillation column A as a liquid, a gas, or a mixture of a liquid and a gas.
- a gaseous raw material intermittently or continuously with the lower force of the distillation column A.
- the cyclic carbonate is continuously supplied to the distillation column in a liquid or gas-liquid mixed state to the upper stage from the stage where the catalyst is present, and the aliphatic monohydric alcohol is gaseous to the lower part of the distillation tower A.
- a method of continuously supplying Z or liquid is also a preferable method. In this case, it goes without saying that an aliphatic monohydric alcohol is contained in the cyclic carbonate.
- the feedstock may contain dialkyl carbonate and Z or diol as the product.
- the content of the dialkyl carbonate represented by mass% of dialkyl carbonate in the aliphatic monohydric alcohol Z dialkyl carbonate mixture is usually 0 to 40 mass%, preferably 0 to 30 mass%, more preferably 0.
- the diol is represented by mass% in the cyclic carbonate Z diol mixture, and is usually 0 to 10 mass%, preferably 0 to 7 mass%, more preferably 0 to 5 mass%.
- the cyclic carbonate recovered in this step and Z or other steps it is preferable that it can be used as a raw material for these materials having Z or an aliphatic monohydric alcohol as a main component.
- the present invention makes this possible and is an excellent feature of the present invention.
- the other step includes, for example, a step of producing diaryl carbonate with dialkyl strength-bonate and aromatic monohydroxy compound strength. In this step, aliphatic monohydric alcohol is by-produced and recovered.
- This recovered by-product aliphatic monohydric alcohol usually contains dialkyl carbonates, aromatic monohydroxy compounds, alkylaryl ethers, etc., and even a small amount of alkylaryl carbonates, diaryl carbonates, etc. May be included.
- the by-product aliphatic monohydric alcohol can be used as it is as a raw material of the present invention, or it can be used as a raw material after reducing the content of substances having a boiling point higher than that of the aliphatic monohydric alcohol by distillation or the like.
- the cyclic carbonate used in the present invention is produced by a reaction of an alkylene oxide such as ethylene oxide, propylene oxide, and styrene oxide with carbon dioxide.
- An annular force carbonate containing a small amount of a compound or the like can also be used as a raw material of the present invention.
- the amount ratio between the cyclic carbonate and the aliphatic monohydric alcohol supplied to the reactive distillation column A varies depending on the type and amount of the transesterification catalyst and the reaction conditions.
- Aliphatic monohydric alcohols can be supplied in a molar ratio of 0.01 to: LOOO times the cyclic carbonate.
- aliphatic monohydric alcohols should be It is preferable to supply an excess amount more than double moles. However, if it is used too much, the apparatus needs to be enlarged.
- the molar ratio of the aliphatic monohydric alcohol to the cyclic carbonate is preferably 2 to 20, more preferably 3 to 15, and even more preferably 5 to 12.
- the reaction rate of the cyclic carbonate can be 98% or more, preferably 99% or more, more preferably 99.9% or more. . This is also one of the features of the present invention.
- a high boiling point reaction mixture (A) containing preferably about 1 ton or more of diols per hour is continuously produced, and this is converted into a continuous multistage distillation column C.
- the column bottom component (C) is separated by distillation in a continuous multistage distillation column E and about 1 ton per hour is obtained.
- the minimum amount of cyclic carbonate to be supplied continuously is usually 1.55 Ptons relative to the amount of high purity diol to be produced (P ton Zhr).
- Zhr preferably 1.5 P ton Zhr, more preferably 1.45 P ton Zhr. In a more preferred case, it can be less than 1.43P ton Zhr.
- the continuous multistage distillation column A for carrying out the reactive distillation method according to the present invention is not particularly limited, but preferably not only distillation but also the reaction is performed simultaneously, and preferably about 1.5 tons or more of dialkyl per hour. Carbonate and Z or preferably about 1 ton or more of Zeo per hour It is preferable to be able to stably produce sulfoxides for a long period of time.
- a cyclic carbonate and an aliphatic monohydric alcohol are used as raw materials, and the raw materials are continuously supplied into a continuous multistage distillation column A in which a catalyst exists, and reactive distillation is performed in the column A.
- the high boiling point reaction mixture (A) containing is continuously extracted in a liquid state, and the high boiling point reaction mixture (A).
- a substance having a lower boiling point than that of the diol is added to the top component (c) and the Z or side cut component
- the bottom component (C) obtained by distilling off as T (c S) is continuously supplied to the continuous multistage distillation column E.
- the side cut extraction locus of the continuous multistage distillation column E is also used as the side cut component (E).
- the continuous multistage distillation column C also has a lower boiling point than the diol contained in the high boiling point reaction mixture (A).
- the high boiling point reaction mixture (A) usually contains a small amount.
- the continuous multistage distillation column E used in the present invention is a high-purity distillate from a large amount of the bottom component (C).
- the continuous multistage distillation column E includes a recovery unit having an internal length L (cm) satisfying the following formulas (1) to (9), an inner diameter D (cm), and an internal number n of stages: Length L (cm), inner diameter D (cm
- the column bottom material (C) obtained by distilling off satisfies the formulas (1) to (11) at the same time.
- L (cm) is smaller than 400, the separation efficiency of the recovery unit is lowered, so that the target separation efficiency cannot be achieved, and the facility cost can be reduced while ensuring the target separation efficiency. Must be less than 3 000. If L is greater than 3000, the pressure difference between the top and bottom of the column becomes too large, so that long-term stable operation becomes difficult, and the temperature at the bottom of the column must be increased.
- a more preferable range of L (cm) is 500 ⁇ L ⁇ 2000, and further preferably 600 ⁇ L ⁇ 1500.
- D (cm) is less than 50, the target distillation amount cannot be achieved, and in order to reduce the equipment cost while achieving the target distillation amount, D must be 700 or less. is there.
- a more preferable range of D (cm) is 100 ⁇ D ⁇ 600, and more preferably 120 ⁇ D ⁇ 500.
- L / repulsive force is less than 50 or greater than 50, long-term stable operation becomes difficult.
- a more preferred range of L / ⁇ is 3 ⁇ L ZD ⁇ 20, and even more preferably 4 ⁇ L / ⁇ 15.
- n force ⁇ the separation efficiency of the recovery unit will decrease, so the target separation efficiency cannot be achieved.
- n should be 30 or less. It is necessary to. If n is greater than 30, the difference in pressure between the top and bottom of the tower becomes too large, and long-term stable operation becomes difficult.In addition, the temperature at the bottom of the tower must be increased, and side reactions are likely to occur. Become.
- a more preferable range of n is 5 ⁇ n ⁇ 20, and more preferably 6 ⁇ n ⁇ 15.
- L (cm) is smaller than 600, the separation efficiency of the concentrating part is lowered, so that the desired separation effect is achieved.
- the range is 700 ⁇ L ⁇ 3000, more preferably 800 ⁇ L ⁇ 2500.
- D In order to reduce the equipment cost while achieving the above, D must be 1000 or less.
- the preferred range of D (cm) is 120 ⁇ D ⁇ 800, more preferably 150 ⁇ D
- New L / ⁇ ⁇ range is 3 ⁇ L ZD ⁇ 20, more preferably 4 ⁇ L / ⁇ ⁇ 15
- n 50 or less.
- n is greater than 50, the pressure difference between the top and bottom of the tower becomes too large
- n 7 ⁇ n ⁇ 30
- D ⁇ D is more preferable.
- the chimney tray installed in the concentrating part of the continuous multi-stage distillation column E is provided with two or more chimneys (chimney-like objects) having openings of a cross-sectional area S (cm 2 ) on the plane of the tray. It is a thing. And it is preferable that the chimney single bar is installed in the upper opening part of those chimneys. This chimney first bar helps the gas component rising from the lower stage to flow sideways at the upper opening (gas outlet) of the chimney, while the liquid component falling from the upper stage directly falls to the lower stage. It helps to prevent
- the shape of the cross section of the chimney may be any of a triangle, a quadrangle, a polygon, a circle, an elliptical system, a star, and the like, but a quadrangle and a circle are preferably used.
- the chimney may have different cross-sectional shapes and areas from the top to the bottom, but the same is preferable because it is easy to manufacture and inexpensive. Further, two or more chimneys may have different shapes, but preferably have the same shape.
- the cross-sectional area S (cm 2 ) of the chimney opening connected to the chimney tray (minimum portion in the cross-section of the chimney) S (cm 2 ) is satisfied. It is necessary.
- S is less than 50, many chimneys will be required to achieve the specified production volume, resulting in high equipment costs. On the other hand, if S is greater than 2000, the gas flow in the chimney tray stage tends to be uneven, making long-term stable operation difficult. More preferable S (cm 2 ) is 100 ⁇ S ⁇ 1500, and more preferably 200 ⁇ S ⁇ 1000.
- the chimney tray used in the present invention is usually provided with a downcomer portion for dropping the liquid component to the lower stage and a weir for holding the liquid component.
- the height of the weir is a force that depends on h. Usually, it is set to be 5 to 20 cm smaller than h. Therefore, if h is less than 20, the amount of liquid retained in the chimney tray decreases, making long-term stable operation difficult. Further, if h is larger than 100, the amount of liquid to be retained increases, so it is necessary to increase the strength of the equipment, so that the residence time of the purified diol in the tower increases as well as the equipment cost increases. Absent.
- a more preferable h (cm) is 30 ⁇ h ⁇ 80, and further preferably 40 ⁇ h ⁇ 70.
- the opening ratio of the chimney tray (ratio of the total cross-sectional area of the chimney opening and the area of the chimney tray including the entire cross-sectional area of the chimney) is in the range of 5 to 40%. Is preferred. If the opening ratio is less than 5%, long-term stable operation becomes difficult. On the other hand, if it exceeds 40%, it is necessary to increase the number of chimneys or raise the chimney. A more preferred aperture ratio is in the range of 10-30%, and even more preferably in the range of 15-25%.
- one or more chimney trays are installed in the concentrating part of the multistage distillation column E (above the supply port to the column and below the top of the column), and at the bottom of the liquid reservoir. Connected side-cut extraction loca
- One feature is that liquid high-purity diol is continuously extracted.
- the number of chimney trays can be increased to two or more as required, usually one.
- the chimney tray can be installed at any position in the concentration section. However, it is preferable to use the third stage or more from the bottom of the stage of the enrichment section and the third stage or less from the top of the stage of the enrichment section.
- the lower force of the stage of the enrichment section is 4 or more stages
- the upper stage of the stage of the enrichment section is 4 stages or less
- the lower stage of the stage of the enrichment section is 5 stages or more. It is the fourth and lower stages from the top of the enrichment section.
- the recovery section and the concentration section of the continuous multistage distillation column E of the present invention are preferably a distillation column having a tray and Z or packing as an internal.
- the term “internal” means a portion in the distillation column that is actually brought into contact with gas and liquid.
- Examples of such trays include foam trays, perforated plate trays, ripple trays, ballast trays, valve trays, countercurrent trays, dual flux trays, super flack trays, max flack trays, dual flow trays, grid plates.
- a multistage distillation column having both a tray part and a part filled with a packing can also be used.
- the term “number of internal stages n and n” used in the present invention means a tray in the case of a tray.
- the internal parts of the recovery section and the concentration section of the continuous multistage distillation column E are trays. Furthermore, it has been found that a perforated plate tray having a perforated plate portion and a downcomer portion is particularly excellent in terms of function and equipment cost. It has also been found that it is preferred that the perforated plate tray has 150 to 1200 holes per area lm 2 of the perforated plate portion. More preferably, the number of pores is 200 to 1100 per lm 2 , more preferably 250 to 1000. It has also been found that the cross-sectional area per hole of the perforated plate tray is preferably 0.5 to 5 cm 2 .
- the cross-sectional area per hole is more preferably 0.7 to 4 cm 2 , and further preferably 0.9 to 3 cm 2 .
- the perforated plate tray has 150 to 1200 holes per area lm 2 of the perforated plate portion. And a cross-sectional area per hole of 0.5 to 5 cm 2 has been found to be particularly preferable.
- the aperture ratio of the perforated plate tray in the recovery section of the continuous multistage distillation column E (the ratio of the total cut area of the holes in the first tray and the area of the tray) is in the range of 3 to 25%. Is more preferably 3.5 to 22%, and still more preferably 4 to 20%.
- the aperture ratio of the perforated plate tray in the concentrating part of the continuous multistage distillation column E (the ratio of the total cross-sectional area of the holes in the first tray and the area of the tray) is in the range of 2 to 20%. More preferably, it is in the range of 3 to 15%, more preferably in the range of 3.5 to 13%.
- the chimney tray installed in the concentrating section has a force that counts in the number of stages, and its opening ratio is different from the opening ratio of the perforated plate tray as described above.
- the dialkyl carbonate produced by the reactive distillation in the continuous multistage distillation column A is usually used in excess and the low-boiling point reaction mixture (A) with the aliphatic monohydric alcohol remaining unreacted. As shown in FIG. And generate
- the high boiling point reaction mixture (A) containing the diols to be removed is continuously extracted in liquid form from the bottom of the column.
- the lower boiling point substance (aliphatic monohydric alcohol, trace amount of dialkyl carbonate and by-product co, low boiling point by-product) and a small amount of diol
- the diols contained are continuously extracted as the bottom component (C).
- C the bottom component
- the concentration of the diol in the bottom component (C) is usually 95% by mass or more, Preferably it is 97 mass% or more, More preferably, it is 98 mass% or more.
- patents are used for the purpose of obtaining ultra-high-purity diol in which the trace amount of aldehyde that may be contained in diol is further reduced, and ultra-high-purity diol having high ultraviolet transmittance. According to the method described in Document 9 or 10, it is also preferable to supply a small amount of water to the lower part of the continuous multistage distillation column E.
- the distillation conditions of the continuous multistage distillation column E carried out in the present invention include the internal shape and number of stages of the distillation column, the type, composition, and amount of the bottom component (C) of the distillation column C to be supplied.
- the bottom pressure is a force that varies depending on the composition in the tower and the bottom temperature used. Usually, it is in the range of 8000 to 40000Pa, preferably in the range of 1000 to 33000Pa, and more preferably in the range of 12000 to 27000Pa. is there.
- the reflux ratio of the continuous multistage distillation column E is preferably in the range of 6 to 50, more preferably in the range of 8 to 45, and still more preferably in the range of 10 to 30.
- the top component (E) of the continuous multistage distillation column E is a small amount of diol (usually,
- the bottom component (E) of continuous multistage distillation column E is a high-boiling by-product containing a small amount of diol and catalyst components.
- the side cut component (E) of the continuous multistage distillation column E is usually 99% or more, preferably 99.9. %, More preferably 99.99% or more of high purity diol power. That is, in the present invention, impurities having a boiling point higher than that of the diol in the side cut component (E) (
- dialkylene glycol and the like can be easily adjusted to 1% by mass or less, preferably 0.1% by mass or less, more preferably 0.01% by mass or less.
- the diol to be produced can contain no halogen at all. . Therefore, in the present invention, it is easy to produce a diol having a halogen content of 0.1 ppm or less, preferably 1ppb or less.
- a high-purity diol having impurities having a boiling point higher than that of a diol such as dialkylene glycol of 200 ppm or less and a halogen content of 0.1 ppm or less It can be easily achieved, and preferably, it is easy to produce a high-purity diol having impurities having a boiling point higher than that of a diol such as dialkylene glycol and having a halogen content of 1 ppb or less.
- the yield is usually 97% or more, preferably 98% or more, more preferably 99% or more, based on the cyclic carbonate used. High purity diols can be produced.
- the materials constituting the continuous multistage distillation columns A, C and E used in the present invention are mainly metal materials such as carbon steel and stainless steel. From the aspect of the quality of dialkyl carbonate and diol produced. Stainless steel is preferred.
- the continuous multi-stage distillation column E installed in the fifth stage from the top was used.
- the number of holes in the perforated plate tray in the recovery unit is about 300-370 /
- the range was m 2 and the aperture ratio was in the range of 4-5%.
- the number of holes in the perforated plate tray in the concentrating part was in the range of about 300 to 450 holes / m 2 , and the opening ratio was in the range of 3 to 4%.
- Inlet force Continuously supplied.
- This inlet is installed between the 9th and 10th trays from the bottom of the continuous multistage distillation column C. Separately, it passes through a reboiler at the bottom of continuous multi-stage distillation column C, and the top component of continuous multi-stage distillation column E (E) is 0.155 ton Zhr (ethylene distillate).
- Ethylene glycol 32 tons Zhr, diethylene glycol, catalyst components and high-boiling by-products 0.019 tons Zhr were continuously extracted.
- This bottom component (C) 2.339 tons Zhr was installed between the 8th and 9th stages from the bottom.
- This tower top component (E) is a continuous multistage
- the bottom component (E) continuously extracted at 0.04 ton Zhr from the bottom 3 of continuous multi-stage distillation column E is 0.02 ton Zhr ethylene glycol.
- the content of high-boiling impurities such as coal was lOppm or less, and halogen was lppb or less outside the detection limit.
- the yield of high-purity ethylene glycol based on ethylene carbonate was 98.6%.
- a long-term continuous operation was performed under these conditions. After 500 hours, 2000 hours, 4000 hours, 5000 hours, 6000 hours, the production amount of ethylene glycol per hour is 2.162, 2.162, 2.162, 2 162 ⁇ , 2. 162 ⁇ , very stable.
- the purity of ethylene glycol was 99.99% or more, and the halogen content was lppb or less, which was outside the detection limit.
- the aldehyde content measured by the method of Patent Document 15 was 0.2 ppm or less, and the ultraviolet transmittance at 220 nm was 90%.
- This top component (E) is a continuous multi-stage steam
- the content of high-boiling impurities such as benzene was 10 ppm or less, and halogen was lp pb or less, which was outside the detection limit.
- the yield of high-purity ethylene glycol based on ethylene carbonate was 98.5%. A long-term continuous operation was performed under these conditions.
- the production of ethylene glycol per hour after 1000 hours, 2000 hours, 3000 hours, 5000 hours is 2.29 tons, 2.29 tons, 2.29 tons, 2.29 tons, It was stable.
- the purity of ethylene glycol was 99.99% or more in all cases, and the halogen content was lppb or less outside the detection limit.
- the aldehyde content was 0.2 ppm or less, and the ultraviolet transmittance at 220 nm was 90%.
- Example 2 The same continuous multi-stage distillation column E as in Example 1 was used. However, the number of holes in the perforated plate tray in the concentrating portion was in the range of about 400 to 450 holes / m 2 , and the opening ratio was in the range of 5 to 6%.
- This tower top component (E) is a continuous multistage
- the content of high-boiling impurities such as coal was lOppm or less, and halogen was lppb or less outside the detection limit.
- the yield of high-purity ethylene glycol based on ethylene carbonate was 98.7%. A long-term continuous operation was performed under these conditions.
- the production quantities of ethylene glycol per hour after 1000 hours, 2000 hours, and 3000 hours were 2.648 tons, 2.648 tons, and 2.64 tons, which were very stable.
- the purity of ethylene glycol was 99.99% or more, and the halogen content was lppb or less, which was outside the detection limit.
- the aldehyde content was 0.2 ppm or less, and the ultraviolet transmittance at 220 nm was 90%.
- the same continuous multi-stage distillation column E as in Example 1 was used.
- the number of holes in each of the sieve trays of the recovery unit is in the range of about 650 to 750 cells / m 2, the opening ratio in the range of 8% to 10%, the number of holes in each of the multi-hole plate tray in the enrichment section is about 500 in the range of 650 pieces / m 2, the aperture ratio of 6% to 8% range der ivy o
- Render Recall 5 754 tons Zhr, diethylene glycol, catalyst components and high-boiling by-products (0.098 tons Zhr) were continuously fed from the inlet 1 to the continuous multistage distillation column E. Through the reboiler 7 from the inlet 5 at the bottom of the tower, 0.05 ton Zhr of water having an oxygen concentration of 10 ppm or less was supplied. Continuous multistage distillation column E was continuously operated at a column bottom temperature of about 160 ° C., a column bottom pressure of about 21300 Pa, and a reflux ratio of 13.
- the top component (E) continuously extracted at 0.45 ton Zhr from the top 2 of the continuous multistage distillation column E is ethylene glycol 0. 4 ton Zhr, water 0.05 ton Zhr force was also made.
- the top component (E) is a continuous multistage distillation column.
- the bottom component (E) continuously extracted at 0.2 ton Zhr from the bottom 3 of the continuous multistage distillation column E is ethylene glycol 0.1 ton Zhr, diethylene glycol.
- the catalyst component and high-boiling by-product were 0.1 ton Zhr.
- Side cut component (E s) continuously extracted at 5. 202 tons Zhr from side cut section 4 of continuous multistage distillation column E
- the purity of ethylene glycol in) was 99.99% or higher, the content of high-boiling impurities such as diethylene glycol was 10 ppm or less, and halogen was 10 ppm or less, which was outside the detection limit.
- the yield of high-purity ethylene glycol based on ethylene carbonate was 97.6%. A long-term continuous operation was performed under these conditions.
- the production volume of ethylene glycol per hour after 500 hours, 1000 hours, and 1500 hours was 5.202 tons, 5.202 tons, and 5.202 tons, which were very stable.
- the purity of ethylene glycol was 99.99% or more, and the halogen content was lppb or less, which was outside the detection limit.
- the aldehyde content was 0.2 ppm or less, and the ultraviolet transmittance at 220 nm was 90%.
- the purity of the dialkyl carbonate and diol produced from the cyclic carbonate and the aliphatic monohydric alcohol by the reactive distillation method is 97% or more, preferably 99% or more, more preferably 99%.
- 9% or more of high-boiling impurities including dialkylene glycol are preferably 200 ppm or less, more preferably lOO ppm or less, even more preferably lO ppm or less, and halogen content is preferably 0.1 ppm or less, more preferably lp
- High-purity diols of less than pb are 1 ton per hour, preferably 2 ton per hour, more preferably 3 ton per hour, more preferably 3 ton per hour, 1000 hours or more, preferably 3000 hours or more Further, it was found that it can be stably obtained in a high yield for a long period of 5000 hours or more.
- This high-purity diol (for example, high-purity ethylene glycol) is a high-quality polyester (for example, higher-purity) than the ethylene glycol that is industrially produced by the existing manufacturing method (ethylene oxide hydration method). It is useful as a raw material for PET fiber and PET resin.
- FIG. 1 is a schematic view showing an example of a continuous multistage distillation column E preferable for carrying out the present invention. Inside the barrel, there are n-stage and n-stage trays for the collection and concentration sections as internal.
- Outlet, 3 Tower bottom component (E) outlet, 4: Side cut component (E) outlet, 5: Lead
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800506977A CN101356145B (zh) | 2006-01-10 | 2006-12-28 | 高纯度二醇的工业制备方法 |
JP2007553883A JP5088954B2 (ja) | 2006-01-10 | 2006-12-28 | 高純度ジオールの工業的製造方法 |
EA200870030A EA013195B1 (ru) | 2006-01-10 | 2006-12-28 | Способ промышленного получения высокочистого диола |
US11/991,292 US8071819B2 (en) | 2006-01-10 | 2006-12-28 | Industrial process for production of high-purity diol |
EP06843606.2A EP1972609B1 (en) | 2006-01-10 | 2006-12-28 | Process for industrial production of high-purity diols |
BRPI0620910A BRPI0620910B1 (pt) | 2006-01-10 | 2006-12-28 | processo industrial para a produção de um diol de pureza elevada, diol de pureza elevada, e, coluna de destilação contínua de estágios múltiplos |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006002711 | 2006-01-10 | ||
JP2006-002711 | 2006-01-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007080805A1 true WO2007080805A1 (ja) | 2007-07-19 |
Family
ID=38256215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/326228 WO2007080805A1 (ja) | 2006-01-10 | 2006-12-28 | 高純度ジオールの工業的製造方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US8071819B2 (ja) |
EP (1) | EP1972609B1 (ja) |
JP (1) | JP5088954B2 (ja) |
KR (1) | KR100968005B1 (ja) |
CN (1) | CN101356145B (ja) |
BR (1) | BRPI0620910B1 (ja) |
EA (1) | EA013195B1 (ja) |
IN (2) | IN2008KN00942A (ja) |
TW (1) | TWI334410B (ja) |
WO (1) | WO2007080805A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011058069A2 (en) | 2009-11-13 | 2011-05-19 | Basf Se | Method for purifying a chlorine supply |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09183744A (ja) * | 1995-10-31 | 1997-07-15 | Asahi Chem Ind Co Ltd | ジアルキルカーボネートおよびジオールの連続的製造法 |
WO2000051954A1 (fr) * | 1999-03-03 | 2000-09-08 | Asahi Kasei Kabushiki Kaisha | Procede d'elaboration continue de carbonate dialcoyle et de diol |
JP2004131394A (ja) * | 2002-10-08 | 2004-04-30 | Asahi Kasei Chemicals Corp | ジアルキルカーボネートおよびジオールを製造する方法 |
WO2005123638A1 (ja) * | 2004-06-17 | 2005-12-29 | Asahi Kasei Chemicals Corporation | ジアルキルカーボネートとジオールの製造方法 |
WO2006030724A1 (ja) * | 2004-09-17 | 2006-03-23 | Asahi Kasei Chemicals Corporation | 副生アルコール類の工業的分離方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2529025B2 (ja) | 1990-11-29 | 1996-08-28 | 旭化成工業株式会社 | ジアルキルカ―ボネ―トとジオ―ル類の連続的製造法 |
JPH0768180B2 (ja) | 1990-12-27 | 1995-07-26 | 旭化成工業株式会社 | ジアルキルカーボネートとジオール類の連続的製法 |
DE4129316A1 (de) | 1991-09-03 | 1993-03-04 | Bayer Ag | Verfahren zur kontinuierlichen herstellung von dialkylcarbonaten |
DE4216121A1 (de) | 1992-05-15 | 1993-11-18 | Bayer Ag | Verfahren zur kontinuierlichen Herstellung von Dialkylcarbonaten |
JP3769043B2 (ja) | 1994-12-19 | 2006-04-19 | 日揮株式会社 | 炭化水素含有ガスの処理方法 |
JP4093607B2 (ja) | 1995-11-14 | 2008-06-04 | 旭化成ケミカルズ株式会社 | ジアルキルカーボネートおよびジオールの連続的製造方法 |
EP0889025B1 (en) | 1995-12-22 | 2002-04-03 | Asahi Kasei Kabushiki Kaisha | Process for continuously preparing dialkyl carbonates and diols |
JPH09176061A (ja) | 1995-12-28 | 1997-07-08 | Asahi Chem Ind Co Ltd | ジアルキルカーボネートとジオールの連続的製造法 |
JP4565742B2 (ja) | 1998-06-10 | 2010-10-20 | 旭化成ケミカルズ株式会社 | ジアルキルカーボネートとジオールを連続的に製造する方法 |
JP4467204B2 (ja) | 2001-04-13 | 2010-05-26 | 旭化成ケミカルズ株式会社 | ジアルキルカーボネートおよびジオールの製造方法 |
WO2003006418A1 (fr) | 2001-07-10 | 2003-01-23 | Mitsubishi Chemical Corporation | Procede de production de dialkylcarbonate |
JP4380102B2 (ja) | 2001-10-10 | 2009-12-09 | 三菱化学株式会社 | ジメチルカーボネートの製造方法 |
JP2003300936A (ja) | 2002-04-09 | 2003-10-21 | Mitsui Chemicals Inc | ジアルキルカーボネートとグリコールの連続同時製造方法 |
JP3963357B2 (ja) | 2002-05-23 | 2007-08-22 | 三菱化学株式会社 | ジメチルカーボネート及びエチレングリコールの製造方法 |
US20040104108A1 (en) | 2002-12-03 | 2004-06-03 | Mason Robert Michael | High capacity purification of thermally unstable compounds |
TW200732291A (en) | 2005-12-14 | 2007-09-01 | Asahi Kasei Chemicals Corp | Process for production of dialkyl carbonate and diol in industrial scale and with high yield |
TWI314549B (en) | 2005-12-26 | 2009-09-11 | Asahi Kasei Chemicals Corp | Industrial process for separating out dialkyl carbonate |
-
2006
- 2006-12-19 TW TW095147679A patent/TWI334410B/zh active
- 2006-12-28 CN CN2006800506977A patent/CN101356145B/zh active Active
- 2006-12-28 EP EP06843606.2A patent/EP1972609B1/en active Active
- 2006-12-28 WO PCT/JP2006/326228 patent/WO2007080805A1/ja active Application Filing
- 2006-12-28 IN IN942KON2008 patent/IN2008KN00942A/en unknown
- 2006-12-28 BR BRPI0620910A patent/BRPI0620910B1/pt active IP Right Grant
- 2006-12-28 EA EA200870030A patent/EA013195B1/ru not_active IP Right Cessation
- 2006-12-28 KR KR1020087016672A patent/KR100968005B1/ko active Active
- 2006-12-28 JP JP2007553883A patent/JP5088954B2/ja active Active
- 2006-12-28 IN IN942KO2008 patent/IN246128B/en unknown
- 2006-12-28 US US11/991,292 patent/US8071819B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09183744A (ja) * | 1995-10-31 | 1997-07-15 | Asahi Chem Ind Co Ltd | ジアルキルカーボネートおよびジオールの連続的製造法 |
WO2000051954A1 (fr) * | 1999-03-03 | 2000-09-08 | Asahi Kasei Kabushiki Kaisha | Procede d'elaboration continue de carbonate dialcoyle et de diol |
JP2004131394A (ja) * | 2002-10-08 | 2004-04-30 | Asahi Kasei Chemicals Corp | ジアルキルカーボネートおよびジオールを製造する方法 |
WO2005123638A1 (ja) * | 2004-06-17 | 2005-12-29 | Asahi Kasei Chemicals Corporation | ジアルキルカーボネートとジオールの製造方法 |
WO2006030724A1 (ja) * | 2004-09-17 | 2006-03-23 | Asahi Kasei Chemicals Corporation | 副生アルコール類の工業的分離方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1972609A4 * |
Also Published As
Publication number | Publication date |
---|---|
EA013195B1 (ru) | 2010-02-26 |
KR20080077671A (ko) | 2008-08-25 |
TW200734291A (en) | 2007-09-16 |
US8071819B2 (en) | 2011-12-06 |
BRPI0620910A2 (pt) | 2013-04-02 |
CN101356145B (zh) | 2012-12-26 |
EP1972609B1 (en) | 2013-05-22 |
BRPI0620910B1 (pt) | 2016-05-31 |
IN2008KN00942A (ja) | 2008-12-19 |
EP1972609A4 (en) | 2009-11-04 |
JPWO2007080805A1 (ja) | 2009-06-11 |
EA200870030A1 (ru) | 2008-10-30 |
US20090156865A1 (en) | 2009-06-18 |
TWI334410B (en) | 2010-12-11 |
CN101356145A (zh) | 2009-01-28 |
EP1972609A1 (en) | 2008-09-24 |
JP5088954B2 (ja) | 2012-12-05 |
KR100968005B1 (ko) | 2010-07-07 |
IN246128B (ja) | 2011-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4986867B2 (ja) | 高純度ジオールを工業的に製造する方法 | |
KR101002863B1 (ko) | 디알킬카르보네이트의 공업적 분리 방법 | |
JP4937140B2 (ja) | ジアルキルカーボネートとジオール類の工業的製造方法 | |
JP4986866B2 (ja) | 高純度ジオールの工業的製造法 | |
JP5074213B2 (ja) | ジオールの工業的製造方法 | |
JP4272686B2 (ja) | ジアルキルカーボネートとジオールの製造方法 | |
JP4424898B2 (ja) | ジアルキルカーボネートおよびジオールを製造する方法 | |
JP2006199643A (ja) | ジオールおよびジアルキルカーボネートの製造方法 | |
WO2007080805A1 (ja) | 高純度ジオールの工業的製造方法 | |
JP7569448B2 (ja) | ジアルキルカーボネートの製造方法、及びジアルキルカーボネートの製造装置 | |
JP2023141930A (ja) | バイオ由来ジメチルカーボネート、バイオ由来エチレングリコール、並びにその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2007553883 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 942/KOLNP/2008 Country of ref document: IN Ref document number: 2006843606 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680050697.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200870030 Country of ref document: EA Ref document number: 1020087016672 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11991292 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: PI0620910 Country of ref document: BR Kind code of ref document: A2 Effective date: 20080704 |