CN108503517A - A kind of cyclohexane oxidation of green energy conservation prepares the system and method for cyclohexanone - Google Patents
A kind of cyclohexane oxidation of green energy conservation prepares the system and method for cyclohexanone Download PDFInfo
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- CN108503517A CN108503517A CN201710112537.0A CN201710112537A CN108503517A CN 108503517 A CN108503517 A CN 108503517A CN 201710112537 A CN201710112537 A CN 201710112537A CN 108503517 A CN108503517 A CN 108503517A
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- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 title claims abstract description 68
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 57
- 230000003647 oxidation Effects 0.000 title claims abstract description 55
- 238000004134 energy conservation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 104
- 239000007789 gas Substances 0.000 claims abstract description 92
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 35
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 17
- 239000012071 phase Substances 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 238000000066 reactive distillation Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- 239000007791 liquid phase Substances 0.000 claims description 7
- 230000001699 photocatalysis Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002186 photoactivation Effects 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 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
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical compound OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
The invention discloses the system and methods that a kind of cyclohexane oxidation of green energy conservation prepares cyclohexanone, a kind of system that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, including reaction unit (1) and high pressure gas circulator (2), cyclohexane feed tank field (A) is connect by pipeline with reaction unit, reaction unit is connect by pipeline with high pressure gas circulator, the discharge pipe of high pressure gas circulator is connect after converging with the feed pipe of oxygen tank field (B) with reaction unit, and reaction unit is connect by pipeline with rear centrifugal station (C).The system of the present invention, after directly cycle compression being carried out to the high pressure exhaust gas after reaction without pressure release, reaction system is reentered after being mixed with the oxygen of arbitrary proportion and air, take full advantage of the overbottom pressure of tail gas, compressor only needs to provide a small amount of energy consumption of circulation of tail gas, the significantly less energy consumption of compressor has simple flow, emission-free discharge and outstanding advantages of low energy consumption.
Description
Technical field
The present invention relates to the system and methods that a kind of cyclohexane oxidation prepares cyclohexanone.
Background technology
Cyclohexanone is to prepare the main intermediate of caprolactam, adipic acid, and prepare the main of various vinyl paints
Raw material, and it is used as the solvent of many high molecular polymers extensively.Therefore, cyclohexanone is in the side such as organic chemical industry, coatings industry
Face suffers from extremely important effect.Cyclohexane liquid-phase oxidation method is to prepare cyclohexanone method the most universal, accounts for about cyclohexanone
90% or more of production technology.This method uses oxygen-containing gas for oxidant, higher temperature (80-165 DEG C) and pressure (about
Oxidation reaction is carried out under 1.2MPa).Due to containing inert component in oxygen-containing gas, satisfied by reaction mass in tail gas after oxidation
With, need to tail gas carry out organic component recycling and gas purification, with qualified discharge.The processing method of this general tail gas is
By tail gas by the components such as condensation liquefaction and spray-absorption recycling most of useful hexamethylene and cyclohexanol, treated tail gas
In containing nitrogen about 97%, oxygen about 2%, organic component about 0.45%, pressure 1.1-1.2Mpa, 3-4 DEG C of temperature.100000 tons/
The exhaust emissions amount about 16000-20000Nm3/h of the cyclohexanone production apparatus in year, tail is large-minded and pressure is higher, is directly vented
Mass energy and resource can be wasted and generate certain influence to environment.
Treated that tail gas is sent into flare system burns by these for general method at present, Chinese patent
Tail gas is carried out by entering flare system after direct heat exchange tower, scrubbing tower and tail gas absorber after CN201593027U will react
Burning, this method increase the rate of recovery of hexamethylene, but flare system generally requires addition combustion adjuvant and noble metal catalyst, if
Standby investment is larger, and fire retardant consumption is big, and operating cost is high, and although this way reduces the discharge of organic matter, but increases very
More times of CO2 emission, organic matter cannot be recycled all.
Another common method is absorption, and Chinese patent CN101306293A, CN103055655A etc. use activated carbon
Or the adsorbents such as silica-rich zeolite adsorb organic principle, then by reuse after the desorption and regenerations such as steam or nitrogen, desorption gas into
One step processing recycling organic component is directly entered reaction system.Although this method absorption efficiency is high, the organic matter rate of recovery is high,
Since this method desorption needs a large amount of energy consumption, and adsorbent has certain service life, will consolidate later as new more than the service life
Body waste, investment cost and operating cost are all considerable, restrict the commonly used of this method.
For tail gas after reaction there are elevated pressures, Chinese patent CN204051046U to propose a kind of cyclohexane oxidation tail
The device of gas energy utilization, organic solvent recycling and gas component separation and recovery.This method carries out separation, expansion to tail gas
Acting, UF membrane etc. realize gas-liquid separation, not only recycle the organic matter in tail gas and are done work using the pressure energy of tail gas, are also detached
The nitrogen in tail gas is purified, realizes that resources circulation uses.But this method is also larger due to the more investment of equipment and operating cost.
In conclusion at present all there is investment cost in tail gas treatment process and operating cost is high.And it uses oxygenous
The gas of oxidant needs to be compressed to operating pressure 1.1-1.2MPa, and decrement is big, operating cost is very high, and energy-saving potentiality are huge
Greatly.
Invention content
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of cyclohexane oxidation of green energy conservation to prepare hexamethylene
The system of ketone.
Second object of the present invention is to provide a kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone.
Technical scheme of the present invention is summarized as follows：
A kind of system that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, including reaction unit 1 and high pressure gas cycle
Device 2, cyclohexane feed tank field A are connect by pipeline with reaction unit, and reaction unit is filled by pipeline and high pressure gas cycle
Connection is set, discharge pipe and the feed pipe of oxygen tank field B of high pressure gas circulator converge to be connect with reaction unit afterwards, instead
Device is answered to be connect with rear centrifugal station C by pipeline.
Reaction unit 1 is multistage cyclohexane oxidation system, photocatalytic oxidation reactor, micro- reaction system, and tubulose is anti-
The reaction system for answering device to be combined with solid-liquid UF membrane, the tower reaction system of sieve plate or reactive distillation reaction system.
High pressure gas circulator 2 be centrifugal compressor, gas phase screw compressor, reciprocating compressor one kind or
Multiple combinations.
A kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, includes the following steps：
(1) system for preparing cyclohexanone using the cyclohexane oxidation of green energy conservation；
(2) by hexamethylene or containing the hexamethylene of catalyst, from cyclohexane feed tank field, A is passed through reaction unit 1, simultaneously
The oxygen of oxygen tank field B is passed through reaction unit, the gas phase after reaction is after the compression of high pressure gas circulator 2 and from oxygen
Reaction unit is reentered after the oxygen mix of tank field B, the liquid phase after reaction enters rear centrifugal station C.
The system that the cyclohexane oxidation of another green energy conservation prepares cyclohexanone, including reaction unit 11 and high pressure gas follow
Loop device 12, cyclohexane feed tank field A1 are connect by pipeline with reaction unit, and the reaction unit passes through pipeline and high pressure gas
Body circulation device 12 connects, the discharge pipe mixing with the air and oxygen of any volume ratio all the way of high pressure gas circulator
The feed pipe of gas tank field B1 is connect after converging with reaction unit, and the discharge pipe another way of high pressure gas circulator is with after
Tail-gas after treatment apparatus D1 connections, reaction unit are connect by pipeline with rear centrifugal station C1.
Reaction unit 11 is multistage cyclohexane oxidation system, photocatalytic oxidation reactor, micro- reaction system, and tubulose is anti-
The reaction system for answering device to be combined with solid-liquid UF membrane, the tower reaction system of sieve plate or reactive distillation reaction system.
High pressure gas circulator 12 is one kind of centrifugal compressor, gas phase screw compressor, reciprocating compressor
Or multiple combinations.
The method that the cyclohexane oxidation of another green energy conservation prepares cyclohexanone, includes the following steps：
(1) system for preparing cyclohexanone using the cyclohexane oxidation of another green energy conservation；
(2) by hexamethylene or containing the hexamethylene of catalyst, from cyclohexane feed tank field, A1 is passed through reaction unit 11, together
When the air of any volume ratio of tank field B1 and the mixed gas of oxygen be passed through reaction unit, the gas phase after reaction is through high pressure gas
Body circulation device 12 divides two-way after compressing, mixed with the mixed gas of the air of any volume ratio from tank field B1 and oxygen all the way
Reaction unit is reentered after conjunction, another way is passed through tail-gas after treatment apparatus D1, and the liquid phase after reaction enters rear centrifugal station C1.
Advantages of the present invention is：
1. the cyclohexane oxidation system for preparing cyclohexanone of the green energy conservation of the present invention, to the high pressure exhaust gas after reaction without
It crosses after pressure release directly carries out cycle compression, reenters reaction system after being mixed with the oxygen of arbitrary proportion and air, there is stream
The advantages that journey is simple, and emission-free or tail gas amount is few.
2. the present invention takes full advantage of the overbottom pressure of high pressure exhaust gas, compressor need to only provide a small amount of energy consumption for meeting circulation of tail gas
Recycling for tail gas can be realized, substantially reduce the energy consumption of compressor, saved production cost.
Description of the drawings
Fig. 1 is the system schematic that a kind of cyclohexane oxidation of green energy conservation prepares cyclohexanone.
Fig. 2 is that the cyclohexane oxidation of another green energy conservation prepares the system schematic of cyclohexanone.
Specific implementation mode
Below by drawings and examples, the present invention is further illustrated.
A kind of system that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, is shown in Fig. 1, including reaction unit 1 and high pressure gas
Body circulation device 2, cyclohexane feed tank field A are connect by pipeline with reaction unit, and reaction unit passes through pipeline and high pressure gas
Circulator connects, and the discharge pipe of high pressure gas circulator converges rear and reaction unit with the feed pipe of oxygen tank field B
Connection, reaction unit are connect by pipeline with rear centrifugal station C.
Reaction unit 1 can be any suitable reaction unit known in the art, including the multistage that industry is commonly used
Cyclohexane oxidation system, photocatalytic oxidation reactor, micro- reaction system disclosed in Chinese patent CN101293810A, China
The reaction system that the 202136966U tubular reactors of patent disclosure are combined with solid-liquid UF membrane, Chinese patent
The tower reaction system of sieve plate disclosed in CN10460392A, reactive distillation reaction system disclosed in Chinese patent CN102766032A
Deng.
High pressure gas circulator can be any type of compressibility known in the art, including centrifugal compressor
One or more combinations of machine, gas phase screw compressor, reciprocating compressor.
The system that the cyclohexane oxidation of second of green energy conservation prepares cyclohexanone is shown in Fig. 2, including reaction unit 11 and high pressure
Gas-recycling plant 12, cyclohexane feed tank field A1 are connect by pipeline with reaction unit, the reaction unit by pipeline with
High pressure gas circulator 12 connects, the discharge pipe of high pressure gas circulator all the way with the air and oxygen of any volume ratio
Mixed gas tank field B1 feed pipe converge after connect with reaction unit, the discharge pipe of high pressure gas circulator is another
Road is connect with tail-gas after treatment apparatus D1, and reaction unit is connect by pipeline with rear centrifugal station C1.
Reaction unit 11 can be any suitable reaction unit known in the art, including the multistage that industry is commonly used
Cyclohexane oxidation system, photocatalytic oxidation reactor, micro- reaction system disclosed in Chinese patent CN101293810A, China
The reaction system that the 202136966U tubular reactors of patent disclosure are combined with solid-liquid UF membrane, Chinese patent
The tower reaction system of sieve plate disclosed in CN10460392A, reactive distillation reaction system disclosed in Chinese patent CN102766032A
Deng.
High pressure gas circulator 12 can be any type of compressibility known in the art, including centrifugal compressor
One or more combinations of machine, gas phase screw compressor, reciprocating compressor.
Embodiment 1
A kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, includes the following steps：
(1) system for preparing cyclohexanone using the cyclohexane oxidation of the first green energy conservation；See Fig. 1
(2) hexamethylene is passed through micro- reaction system from cyclohexane feed tank field A, while the oxygen of oxygen tank field B is passed through
Micro- reaction system, gas phase after reaction after centrifugal compressor compresses with after the oxygen mix from oxygen tank field B again into
Reaction system in a subtle way, the liquid phase after reaction enter rear centrifugal station C.
The present embodiment can will substitute hexamethylene containing the hexamethylene of catalyst boric acid.
Catalyst can be any suitable hexamethylene catalyst known in the art, including the soluble-salt of cobalt or cobalt and
Its mixture, boric acid or metaboric acid, doped with the photochemical catalytic oxidation catalyst of rare earth element or the TiO2 of Tb.
Embodiment 2
A kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, includes the following steps：
(1) system for preparing cyclohexanone using the cyclohexane oxidation of the first green energy conservation；
(2) by the hexamethylene containing catalyst cobaltous octadecanate, from cyclohexane feed tank field, it is anti-to be passed through multistage cyclohexane oxidation by A
System is answered, while the oxygen of oxygen tank field B is passed through multistage cyclohexane oxidation system, the gas phase after reaction is through gas phase screw rod
After formula compressor compresses and multistage cyclohexane oxidation system is reentered after the oxygen mix from oxygen tank field B, is reacted
Liquid phase afterwards enters rear centrifugal station C.
Examples 1 and 2 do not have tail gas generation.
Photoactivation oxidation reactor, the reaction system that tubular reactor is combined with solid-liquid UF membrane, sieve plate are tower anti-
System or reactive distillation reaction system is answered to replace the multistage cyclohexane oxidation system of the present embodiment, other same the present embodiment,
Can green energy conservation cyclohexanone prepared by cyclohexane oxidation.
Embodiment 3
The method that the cyclohexane oxidation of second of green energy conservation prepares cyclohexanone, includes the following steps：
(1) system for preparing cyclohexanone using the cyclohexane oxidation of second of green energy conservation；See Fig. 2
(2) by the hexamethylene containing catalyst boric acid, from cyclohexane feed tank field, A1 is passed through multistage cyclohexane oxidation
System 11, while the mixed gas (oxygen volume content 93%) of the air of tank field B1 and oxygen is passed through multistage cyclohexane oxidation
Reaction system, the gas phase after reaction are divided two-way after the compression of reciprocating compressor 12, are mixed all the way with from the above-mentioned of tank field B1
Multistage cyclohexane oxidation system is reentered after gas mixing, another way is passed through rear exhaust gas processing device D1, after reaction
Liquid phase enters rear centrifugal station C1.
The present embodiment only has a small amount of tail gas, and tail gas amount, which is only about, is passed through air and the 7% of the oxygen mixture scale of construction.
Photoactivation oxidation reactor, the reaction system that tubular reactor is combined with solid-liquid UF membrane, sieve plate are tower anti-
System or reactive distillation reaction system is answered to replace the multistage cyclohexane oxidation system of the present embodiment, other same the present embodiment,
Can green energy conservation cyclohexanone prepared by cyclohexane oxidation.
Claims (8)
1. a kind of system that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, including reaction unit (1) and high pressure gas cycle
Device (2), it is characterized in that cyclohexane feed tank field (A) is connect by pipeline with reaction unit, reaction unit passes through pipeline and height
After pressing gas-recycling plant connection, the discharge pipe of high pressure gas circulator and the feed pipe of oxygen tank field (B) to converge with
Reaction unit connects, and reaction unit is connect by pipeline with rear centrifugal station (C).
2. system according to claim 1, it is characterized in that the reaction unit (1) is multistage cyclohexane oxidation system
System, photocatalytic oxidation reactor, micro- reaction system, the reaction system that tubular reactor is combined with solid-liquid UF membrane, sieve-plate tower
Formula reaction system or reactive distillation reaction system.
3. system according to claim 1, it is characterized in that the high pressure gas circulator (2) be centrifugal compressor,
One or more combinations of gas phase screw compressor, reciprocating compressor.
4. a kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, it is characterized in that including the following steps：
(1) system for using one of claim 1-3；
(2) by hexamethylene or containing the hexamethylene of catalyst, from cyclohexane feed tank field, (A) is passed through reaction unit (1), simultaneously
The oxygen of oxygen tank field (B) is passed through reaction unit, the gas phase after reaction through high pressure gas circulator (2) compression after with come from
Reaction unit is reentered after the oxygen mix of oxygen tank field (B), the liquid phase after reaction enters rear centrifugal station (C).
5. a kind of system that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, including reaction unit (11) and high pressure gas cycle
Device (12), it is characterized in that cyclohexane feed tank field (A1) is connect by pipeline with reaction unit, reaction unit by pipeline with
High pressure gas circulator (12) connects, the discharge pipe of high pressure gas circulator all the way with the air and oxygen of any volume ratio
The feed pipe of the mixed gas tank field (B1) of gas is connect after converging with reaction unit, another way and tail-gas after treatment apparatus (D1)
Connection, reaction unit are connect by pipeline with rear centrifugal station (C1).
6. system according to claim 5, it is characterized in that the reaction unit (11) is multistage cyclohexane oxidation system
System, photocatalytic oxidation reactor, micro- reaction system, the reaction system that tubular reactor is combined with solid-liquid UF membrane, sieve-plate tower
Formula reaction system or reactive distillation reaction system.
7. system according to claim 5, it is characterized in that the high pressure gas circulator (12) be centrifugal compressor,
One or more combinations of gas phase screw compressor, reciprocating compressor.
8. a kind of method that the cyclohexane oxidation of green energy conservation prepares cyclohexanone, it is characterized in that including the following steps：
(1) system for using one of claim 5-7；
(2) by hexamethylene or containing the hexamethylene of catalyst, from cyclohexane feed tank field, (A1) is passed through reaction unit (11), together
When the air of any volume ratio of tank field (B1) and the mixed gas of oxygen be passed through reaction unit, the gas phase after reaction is through high pressure
Gas-recycling plant (12) compression after divide two-way, all the way with the mixing of the air and oxygen of any volume ratio from tank field (B1)
Reaction unit is reentered after gas mixing, another way is passed through tail-gas after treatment apparatus (D1), and the liquid phase after reaction is divided after entering
From workshop section (C1).
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| GB1095793A (en) * | 1964-03-25 | 1967-12-20 | Inventa Ag | Process for oxidation of cyclohexane |
| CN1530358A (en) * | 2003-01-24 | 2004-09-22 | 中国石油化工股份有限公司巴陵分公司 | Process for catalytic oxidation of cyclohexane |
| CN103055660A (en) * | 2013-01-15 | 2013-04-24 | 山东吉安化工有限公司 | Method and system for treating cyclohexane oxidation tail gas |
| CN105797654A (en) * | 2016-05-11 | 2016-07-27 | 南京大学 | Super-efficient oxidation reaction device and method for preparing cyclohexanone from cyclohexane |
| CN106362548A (en) * | 2016-10-10 | 2017-02-01 | 湖南百利工程科技股份有限公司 | Treating method of oxidized tail gas in process of manufacturing cyclohexanone with cyclohexane oxidation method |
-
2017
- 2017-02-28 CN CN201710112537.0A patent/CN108503517A/en active Pending
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Application publication date: 20180907 |