JP4708017B2 - 合成ガスを分別・精製するためのプラントユニットおよび方法 - Google Patents
合成ガスを分別・精製するためのプラントユニットおよび方法 Download PDFInfo
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- 238000003786 synthesis reaction Methods 0.000 title claims description 36
- 230000015572 biosynthetic process Effects 0.000 title claims description 34
- 238000000034 method Methods 0.000 title claims description 21
- 239000007789 gas Substances 0.000 claims description 71
- 239000007788 liquid Substances 0.000 claims description 68
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 48
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 48
- 239000001257 hydrogen Substances 0.000 claims description 38
- 229910052739 hydrogen Inorganic materials 0.000 claims description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims description 30
- 238000004821 distillation Methods 0.000 claims description 23
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 8
- 150000002431 hydrogen Chemical class 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
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Description
a)プレート型熱交換器によって熱交換効率が格段に向上した;
b)一酸化炭素を精製するためのエキスパンダー型特殊冷却システムを必要としないため、システム全体の操作の安全性が向上した;
c)もし一酸化炭素またはアンモニア合成ガスの需要が減少した場合でも、他の合成ガスの精製を継続することにより本発明のシステムユニットを安定使用状態に保つことができ、またそれら両方の合成ガスをフルスピードで生産可能な状態に立て直すことも迅速にできるので、ガス供給に関する信頼性が向上した;
d)本発明のプラントユニットの組み立てや構築は、二つの極低温システムを別々に構築する場合と比べて経済的負担が非常に少なくてすむ。
該プラントユニットに供給される合成ガスを冷却するための熱交換器A;
該合成ガス2を、水素と一酸化炭素を主体とするガス画分4と、一酸化炭素とメタンを主体とする液体画分5とに分別するための分離器であって、該熱交換器Aに連結した分離器B;
該分離器Bから供給された該ガス画分4をさらに分別し、大部分が水素からなるガス画分6および大部分が一酸化炭素からなる液体7とするための分離器C;
該液体7に吸収されている水素を蒸発させて、一酸化炭素を主体とする残留液8を得、得られた残留液8を蒸留塔Fに供給するための蒸発器D;
該分離器Bで得られた該液体画分5に吸収されている残留水素を蒸発除去して、一酸化炭素とメタンを主体とする液体9を得、得られた液体9を該蒸留塔Fに供給することのできる蒸発器E;
一酸化炭素ガスを分離し、塔底液としてメタンを得るための蒸留塔F;および
該分離器Cから供給された、水素を主体とする該ガス画分6から不純物を除去して精製を行うための洗浄塔であって、該精製を液体窒素を用いて行い、該不純物を可燃ガス12として利用するために回収する洗浄塔G。
1."Gas Production", Ullman's Encyclopedia of Industrial Chemistry, Vol. A12, VCH Verlagsgesellschaft mbH (1989)
B 分離器
C 分離器(蒸発器、減圧蒸発器またはフラッシュエバポレータとも称す)
D 減圧手段(蒸発器、レセプタクルまたはフラッシュエバポレータとも称す)
E 減圧手段(蒸発器、フラッシュエバポレータまたはレセプタクルとも称す)
F 蒸留手段または精留・分別手段(蒸留塔とも称す)
G 窒素洗浄手段(洗浄塔とも称す)
1 加圧窒素
2 合成ガス
3 液体窒素
4 水素、一酸化炭素および極微量のメタンからなるガス画分
5 一酸化炭素、メタンおよび水素からなる液体画分
6 水素と少量の一酸化炭素からなるガス画分
7 一酸化炭素、少量のメタンおよび極微量の水素からなる液体画分
8 一酸化炭素、少量のメタンおよび極微量の水素からなる液体画分
9 一酸化炭素とメタンからなる液体画分
10 メタンと少量の一酸化炭素からなる液体画分
11 液体窒素
12 一酸化炭素、窒素、水素および超微量のアルゴンからなる液体画分
13 一酸化炭素、少量の水素および少量のメタンからなるガス画分
14 一酸化炭素からなるガス画分
15 一酸化炭素、窒素、水素、メタンおよび極微量のアルゴンからなるガス画分
16 水素と窒素からなるガス画分
Claims (19)
- 相互に連結した下記手段を包含してなることを特徴とする、合成ガスを分別・精製するためのプラントユニット。
該プラントユニットに供給される合成ガス2を冷却するための第1熱交換器A;
該合成ガス2を、水素と一酸化炭素を主体とするガス画分4と、一酸化炭素とメタンを主体とする液体画分5とに分別するための分離器であって、該第1熱交換器Aに連結した分離器B;
該分離器Bから供給された該ガス画分4をさらに分別し、大部分が水素からなるガス画分6および大部分が一酸化炭素からなる液体7とするための第1蒸発器C;
該第1蒸発器Cから出た該液体7に吸収されている水素を蒸発させて、一酸化炭素を主体とする残留液8を得、得られた残留液8を蒸留塔Fに供給するための第2蒸発器D;
該分離器Bで得られた該液体画分5に吸収されている残留水素を蒸発除去して、一酸化炭素とメタンを主体とする液体9を得るための第3蒸発器E;
該第3蒸発器Eから出た該液体9を受け取り、該液体9から一酸化炭素ガス14を分離して塔底液10としてメタンを得るための蒸留塔F;および
該第1蒸発器Cから供給された、水素を主体とする該ガス画分6から不純物を除去して精製を行うための洗浄塔であって、該精製を液体窒素を用いて行い、該不純物を可燃ガス12として利用するために回収する洗浄塔G。 - 該第1熱交換器Aが、ガスおよび液体用の複数の供給ラインを受け入れることができ、かつ、該ガスおよび液体を所定温度まで冷却または加熱できることを特徴とする、請求項1に記載のプラントユニット。
- 該第1蒸発器C、該第2蒸発器Dおよび該第3蒸発器Eが、液体中に溶解したガスを除去できるフラッシュエバポレータ(減圧蒸発器)であることを特徴とする、請求項1または2に記載のプラントユニット。
- 該蒸留塔Fが、任意の組成を有する合成ガスが通過するようになっている第2熱交換器を有し且つ該蒸留塔の塔底部に蓄積した液体のための排出口を塔底部に有するものであって、該液体が排出されて該第1熱交換器Aを通過した後に該蒸留塔Fへリサイクル可能であることを特徴とする、請求項1〜3のいずれかに記載のプラントユニット。
- 該洗浄塔Gが、窒素ガスおよび液体窒素のための供給ラインを有することを特徴とする、請求項1〜4のいずれかに記載のプラントユニット。
- 該分離器Bの運転を、圧力78バール、温度−171±10℃の条件で行うことを特徴とする、請求項1〜5のいずれかに記載のプラントユニット。
- 該第1蒸発器Cの運転を、圧力78バール、温度−195±10℃の条件で行うことを特徴とする、請求項1〜6のいずれかに記載のプラントユニット。
- 該第2蒸発器Dの運転を、圧力6バール、温度−195±10℃の条件で行うことを特徴とする、請求項1〜7のいずれかに記載のプラントユニット。
- 該第3蒸発器Eの運転を、圧力6バール、温度−171±10℃の条件で行うことを特徴とする、請求項1〜8のいずれかに記載のプラントユニット。
- 該蒸留塔Fの運転を、圧力5バール、塔頂温度−175℃、塔底温度−155℃の条件で行うことを特徴とする、請求項1〜9のいずれかに記載のプラントユニット。
- 該洗浄塔Gの運転を、塔内圧力77バール、温度−185±10℃の条件で行うことを特徴とする、請求項1〜10のいずれかに記載のプラントユニット。
- 該洗浄塔Gの上部から抜き出される混合ガスにおけるH2/N2のモル比を、窒素ガスを添加することによって3:1に調整することを特徴とする、請求項1〜11のいずれかに記載のプラントユニット。
- 請求項1〜12のいずれかに記載のプラントユニットで合成ガスを分別・精製するための方法であって、該合成ガスをまず分縮し、そしてその後に液体窒素による洗浄を行うことを含み、該分離器Bにおいて、該合成ガス2を、水素と一酸化炭素を主体とするガス画分4と、一酸化炭素とメタンを主体とする液体画分5とに分別する際に、圧力78バール、温度−171±10℃の条件で行うことを特徴とする方法。
- 該第1蒸発器Cにおいて、該ガス画分4を、大部分が水素からなるガス画分6と大部分が一酸化炭素からなる液体7とに分別する際に、圧力78バール、温度−195±10℃の条件で行うことを特徴とする、請求項13に記載の方法。
- 該第2蒸発器Dにおいて、該液体7に吸収されている水素を蒸発させる際に、圧力6バール、温度−195±10℃の条件で行うことを特徴とする、請求項13または14に記載の方法。
- 該第3蒸発器Eにおいて、該液体5に吸収されている水素を蒸発させる際に、圧力6バール、温度−171±10℃の条件で行うことを特徴とする、請求項13〜15のいずれかに記載の方法。
- 該蒸留塔Fにおいて、一酸化炭素を分離する際に、圧力5バール、塔頂温度−175℃、塔底温度−155℃の条件で行うことを特徴とする、請求項13〜16のいずれかに記載の方法。
- 該洗浄塔Gにおいて、水素を主体とする該ガス画分6から不純物を除去する際に、液体窒素を用いて、塔内圧力77バール、温度−185±10℃の条件で行うことを特徴とする、請求項13〜17のいずれかに記載の方法。
- 該洗浄塔の上部から抜き出される混合ガスにおけるH2/N2のモル比を、窒素ガスを添加することによって3:1に調整することを特徴とする、請求項13〜18のいずれかに記載の方法。
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DE10226210A DE10226210A1 (de) | 2002-06-13 | 2002-06-13 | Anlagenteil zur Zerlegung und Reinigung von Synthesegas |
PCT/EP2003/003010 WO2003106331A1 (de) | 2002-06-13 | 2003-03-22 | Anlagenteil und verfahren zur zerlegung und reinigung von synthesegas |
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DE (2) | DE10226210A1 (ja) |
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DE102006056642A1 (de) * | 2006-11-30 | 2008-06-05 | Linde Ag | Verfahren und Vorrichtung zur Gewinnung von Produkten aus Synthesegas |
US9243842B2 (en) * | 2008-02-15 | 2016-01-26 | Black & Veatch Corporation | Combined synthesis gas separation and LNG production method and system |
US8640495B2 (en) | 2009-03-03 | 2014-02-04 | Ait Products and Chemicals, Inc. | Separation of carbon monoxide from gaseous mixtures containing carbon monoxide |
CN102153109B (zh) * | 2010-11-10 | 2012-09-19 | 天脊煤化工集团股份有限公司 | 鲁奇煤制氨液氮洗尾气馏份循环利用方法 |
WO2012097497A1 (en) * | 2011-01-17 | 2012-07-26 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for production of ammonia synthesis gas and pure methane by cryogenic separation |
WO2013078606A1 (en) * | 2011-11-29 | 2013-06-06 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and apparatus for the purification of hydrogen by cryogenic nitrogen wash and co-production of liquid methane |
FR3011069B1 (fr) * | 2013-09-24 | 2015-09-11 | Air Liquide | Procede et appareil de separation cryogenique d'un melange contenant au moins du monoxyde de carbone, de l'hydrogene et de l'azote |
US10436505B2 (en) * | 2014-02-17 | 2019-10-08 | Black & Veatch Holding Company | LNG recovery from syngas using a mixed refrigerant |
US20210254891A1 (en) * | 2020-02-14 | 2021-08-19 | Joseph Michael Schwartz | Method for an improved partial condensation carbon monoxide cold box operation |
RU2751758C1 (ru) * | 2020-11-03 | 2021-07-16 | Юрий Иванович Духанин | Водородная криогенная система с колонной низкотемпературной ректификации газовой смеси |
US12077434B2 (en) * | 2022-02-08 | 2024-09-03 | Air Products And Chemicals, Inc. | Method for producing high purity hydrogen |
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WO2003106331A1 (de) | 2003-12-24 |
EP1490295B2 (de) | 2009-11-04 |
DE50300917D1 (de) | 2005-09-08 |
JP2005529222A (ja) | 2005-09-29 |
RU2296704C2 (ru) | 2007-04-10 |
EP1490295A1 (de) | 2004-12-29 |
US7269972B2 (en) | 2007-09-18 |
EP1490295B1 (de) | 2005-08-03 |
DE10226210A1 (de) | 2004-01-08 |
AU2003214251A1 (en) | 2003-12-31 |
RU2004136585A (ru) | 2005-07-10 |
US20050076672A1 (en) | 2005-04-14 |
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