JPS62292888A - Selective removal of acidic gas - Google Patents
Selective removal of acidic gasInfo
- Publication number
- JPS62292888A JPS62292888A JP62144203A JP14420387A JPS62292888A JP S62292888 A JPS62292888 A JP S62292888A JP 62144203 A JP62144203 A JP 62144203A JP 14420387 A JP14420387 A JP 14420387A JP S62292888 A JPS62292888 A JP S62292888A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- tert
- bis
- methyl
- ethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002378 acidificating effect Effects 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 29
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 239000002250 absorbent Substances 0.000 claims description 18
- 230000002745 absorbent Effects 0.000 claims description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 150000001412 amines Chemical class 0.000 claims description 11
- 150000003512 tertiary amines Chemical class 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 150000003464 sulfur compounds Chemical class 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003345 natural gas Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- -1 Methanol- 2-amino-2-methylpropan-1-ol Chemical compound 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- AHXXIYFEJGGBMG-UHFFFAOYSA-N 1-[2-(tert-butylamino)ethoxy]ethanol Chemical compound CC(O)OCCNC(C)(C)C AHXXIYFEJGGBMG-UHFFFAOYSA-N 0.000 claims description 2
- AQELXIITNIQTAH-UHFFFAOYSA-N 1-[2-[methyl(propan-2-yl)amino]propoxy]ethanol Chemical compound CC(C)N(C)C(C)COC(C)O AQELXIITNIQTAH-UHFFFAOYSA-N 0.000 claims description 2
- PBNPDXKJXAUVQG-UHFFFAOYSA-N 1-[3-[2-(3-pyrrolidin-1-ylpropoxy)ethoxy]propyl]pyrrolidine Chemical compound C1CCCN1CCCOCCOCCCN1CCCC1 PBNPDXKJXAUVQG-UHFFFAOYSA-N 0.000 claims description 2
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims description 2
- VGZJOXPMODLELN-UHFFFAOYSA-N 2-(propan-2-ylamino)propan-1-ol Chemical group CC(C)NC(C)CO VGZJOXPMODLELN-UHFFFAOYSA-N 0.000 claims description 2
- POANXYQWEMCVBJ-UHFFFAOYSA-N 2-(tert-butylamino)propan-1-ol Chemical group OCC(C)NC(C)(C)C POANXYQWEMCVBJ-UHFFFAOYSA-N 0.000 claims description 2
- RSBAXTXSXZJZPM-UHFFFAOYSA-N 2-[3-hydroxypropyl(methyl)amino]-2-methylpropan-1-ol Chemical compound OCC(C)(C)N(C)CCCO RSBAXTXSXZJZPM-UHFFFAOYSA-N 0.000 claims description 2
- RKAVTRWQIJQXSG-UHFFFAOYSA-N 3-(tert-butylamino)butan-1-ol Chemical group OCCC(C)NC(C)(C)C RKAVTRWQIJQXSG-UHFFFAOYSA-N 0.000 claims description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 2
- 150000001414 amino alcohols Chemical class 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 125000001033 ether group Chemical group 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- ZAWCVKBSJMRLLG-UHFFFAOYSA-N n-[2-[2-(tert-butylamino)ethoxy]ethyl]-2-methylpropan-2-amine Chemical group CC(C)(C)NCCOCCNC(C)(C)C ZAWCVKBSJMRLLG-UHFFFAOYSA-N 0.000 claims description 2
- 150000003141 primary amines Chemical class 0.000 claims description 2
- 150000003335 secondary amines Chemical class 0.000 claims description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 2
- UGGUOQMUQUMCJX-UHFFFAOYSA-N n-[2-[2-[2-(tert-butylamino)ethoxy]ethoxy]ethyl]-2-methylpropan-2-amine Chemical group CC(C)(C)NCCOCCOCCNC(C)(C)C UGGUOQMUQUMCJX-UHFFFAOYSA-N 0.000 claims 2
- ZUYWFUUNQDJUKG-UHFFFAOYSA-N 1-(butylamino)ethanol Chemical group CCCCNC(C)O ZUYWFUUNQDJUKG-UHFFFAOYSA-N 0.000 claims 1
- SYHAYUSMVWWPKJ-UHFFFAOYSA-N 1-[2-(2-pyrrolidin-1-ylethoxy)ethyl]pyrrolidine Chemical compound C1CCCN1CCOCCN1CCCC1 SYHAYUSMVWWPKJ-UHFFFAOYSA-N 0.000 claims 1
- VBNLLPUIYKNGFT-UHFFFAOYSA-N 1-[2-(3-methylpentan-3-ylamino)ethoxy]ethanol Chemical compound CCC(C)(CC)NCCOC(C)O VBNLLPUIYKNGFT-UHFFFAOYSA-N 0.000 claims 1
- XGLKTGPHTYZZSM-UHFFFAOYSA-N 1-[2-[2-(2-piperidin-1-ylethoxy)ethoxy]ethyl]piperidine Chemical compound C1CCCCN1CCOCCOCCN1CCCCC1 XGLKTGPHTYZZSM-UHFFFAOYSA-N 0.000 claims 1
- WFVCOEZPUIPVFV-UHFFFAOYSA-N 1-[2-[2-(2-pyrrolidin-1-ylethoxy)ethoxy]ethyl]pyrrolidine Chemical compound C1CCCN1CCOCCOCCN1CCCC1 WFVCOEZPUIPVFV-UHFFFAOYSA-N 0.000 claims 1
- SRZFVUOVZDWMQV-UHFFFAOYSA-N 1-[2-[tert-butyl(methyl)amino]ethoxy]ethanol Chemical compound CC(O)OCCN(C)C(C)(C)C SRZFVUOVZDWMQV-UHFFFAOYSA-N 0.000 claims 1
- RASFTWQQTXTOIC-UHFFFAOYSA-N 2-(3-hydroxypropylamino)-2-methylpropan-1-ol Chemical group OCC(C)(C)NCCCO RASFTWQQTXTOIC-UHFFFAOYSA-N 0.000 claims 1
- XUXZZEYSBYRSFS-UHFFFAOYSA-N 2-(dimethylamino)-2-methylbutan-1-ol Chemical compound CCC(C)(CO)N(C)C XUXZZEYSBYRSFS-UHFFFAOYSA-N 0.000 claims 1
- FGHOJUJBJHVRGT-UHFFFAOYSA-N 2-(dimethylamino)-2-methylpropane-1,3-diol Chemical compound CN(C)C(C)(CO)CO FGHOJUJBJHVRGT-UHFFFAOYSA-N 0.000 claims 1
- PBKGYWLWIJLDGZ-UHFFFAOYSA-N 2-(dimethylamino)propan-1-ol Chemical compound OCC(C)N(C)C PBKGYWLWIJLDGZ-UHFFFAOYSA-N 0.000 claims 1
- NEHBSHJKGUCORU-UHFFFAOYSA-N 2-[2-hydroxyethyl(methyl)amino]-2-methylpropan-1-ol Chemical compound OCCN(C)C(C)(C)CO NEHBSHJKGUCORU-UHFFFAOYSA-N 0.000 claims 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 claims 1
- ZPRFYDZCPYDKIX-UHFFFAOYSA-N 2-methyl-n-[2-[2-(2-pyrrolidin-1-ylethoxy)ethoxy]ethyl]propan-2-amine Chemical compound CC(C)(C)NCCOCCOCCN1CCCC1 ZPRFYDZCPYDKIX-UHFFFAOYSA-N 0.000 claims 1
- PGOFJDZYVIIGGD-UHFFFAOYSA-N 3-(tert-butylamino)propan-1-ol Chemical group CC(C)(C)NCCCO PGOFJDZYVIIGGD-UHFFFAOYSA-N 0.000 claims 1
- QBBCYXHPOQXTDE-UHFFFAOYSA-N C(C)(C)(CC)NCCOC(C)O Chemical compound C(C)(C)(CC)NCCOC(C)O QBBCYXHPOQXTDE-UHFFFAOYSA-N 0.000 claims 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims 1
- AKNUHUCEWALCOI-UHFFFAOYSA-N N-ethyldiethanolamine Chemical compound OCCN(CC)CCO AKNUHUCEWALCOI-UHFFFAOYSA-N 0.000 claims 1
- 229960002887 deanol Drugs 0.000 claims 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims 1
- 239000012972 dimethylethanolamine Substances 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 1
- 239000007791 liquid phase Substances 0.000 claims 1
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical group OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims 1
- ZYWUVGFIXPNBDL-UHFFFAOYSA-N n,n-diisopropylaminoethanol Chemical compound CC(C)N(C(C)C)CCO ZYWUVGFIXPNBDL-UHFFFAOYSA-N 0.000 claims 1
- KQEXNCJYOPWRNC-UHFFFAOYSA-N n-(2-ethoxyethyl)-2-methylpropan-2-amine Chemical compound CCOCCNC(C)(C)C KQEXNCJYOPWRNC-UHFFFAOYSA-N 0.000 claims 1
- ISRXMEYARGEVIU-UHFFFAOYSA-N n-methyl-n-propan-2-ylpropan-2-amine Chemical compound CC(C)N(C)C(C)C ISRXMEYARGEVIU-UHFFFAOYSA-N 0.000 claims 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QNBAXSPIXAHQCR-UHFFFAOYSA-N 1-ethoxy-1-(3-methylpentan-3-ylamino)ethanol Chemical compound CCOC(C)(O)NC(C)(CC)CC QNBAXSPIXAHQCR-UHFFFAOYSA-N 0.000 description 1
- FHQRDEDZJIFJAL-UHFFFAOYSA-N 4-phenylmorpholine Chemical compound C1COCCN1C1=CC=CC=C1 FHQRDEDZJIFJAL-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000006309 butyl amino group Chemical group 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- CUHMMDPUXJFCNB-UHFFFAOYSA-N n,n,2-trimethylbutan-2-amine Chemical compound CCC(C)(C)N(C)C CUHMMDPUXJFCNB-UHFFFAOYSA-N 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- XJZRUEZAFLIDFB-UHFFFAOYSA-N n-propan-2-yl-1-[2-(propan-2-ylamino)propoxy]propan-2-amine Chemical compound CC(C)NC(C)COCC(C)NC(C)C XJZRUEZAFLIDFB-UHFFFAOYSA-N 0.000 description 1
- SBOJXQVPLKSXOG-UHFFFAOYSA-N o-amino-hydroxylamine Chemical class NON SBOJXQVPLKSXOG-UHFFFAOYSA-N 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
- C10K1/14—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors organic
- C10K1/143—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors organic containing amino groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/16—Hydrogen sulfides
- C01B17/167—Separation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
-
- 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
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 3、明の詳細な説明 を選択的に除去する方法に係る。[Detailed description of the invention] 3. Detailed explanation of Ming The present invention relates to a method for selectively removing.
さらに詳述すれば、本発明は、CO2をも含有する天然
ガス又は合成ガスからII 、 S及び他のイオウ化合
物(COS. CSIメルカブタン、硫化物)を選択的
に除去する方法に係る。More particularly, the present invention relates to a method for selectively removing II, S and other sulfur compounds (COS. CSI mercabutane, sulfides) from natural gas or synthesis gas that also contains CO2.
CO,をも含有する天然ガス又は合成ガスから硫化水素
及び池のイオウ化合物(cos. cat,メルカブタ
ン)を選択的に除去することは、工業的分野において、
以前から問題であった。実際、硫化水素及び他のイオウ
化合物をできるかぎり完全に除去すると共に、大部分の
CO7が処理ガス中に残留するように処理することか望
まれる場合が多々ある。Selective removal of hydrogen sulfide and pond sulfur compounds (cos. cat, mercabutane) from natural gas or synthesis gas which also contains CO, is an important task in the industrial field.
This has been a problem for some time. In fact, it is often desirable to remove hydrogen sulfide and other sulfur compounds as completely as possible, while still retaining most of the CO7 in the process gas.
最ら頻繁に生ずるケースは次のとおりである。The most frequently occurring cases are:
(1) 天然ガス工業では、有毒性である\H2Sに
ついては非常に厳しく (2−5ppm) 、これに対
し、不活性物質であるC02についてはかなり緩やかな
(0,5−3%)規制がとられている。(1) In the natural gas industry, regulations on the toxic H2S are very strict (2-5 ppm), whereas regulations on the inert substance CO2 are fairly lenient (0.5-3%). It is taken.
処理されたガス中におけるCO7の含量が低い場合には
、l(、Sのみを除去することは容易で、COtの除去
コストを節約できる。When the content of CO7 in the treated gas is low, it is easy to remove only l(,S) and the cost of removing COt can be saved.
(2)天然ガス及び粗製合成ガスが少量のH,S及び多
量のCO2を含量するため、非選択的脱酸性法を利用し
て除去を行なう場合には、分離された酸性ガス流は非常
に希釈された状態でHlSを含有することになり、下流
域におけるイオウ生成用のC1aug装置で問題が生ず
る。(2) Because natural gas and crude syngas contain small amounts of H, S and large amounts of CO2, the separated acid gas stream is very It will contain HlS in diluted form, causing problems in the C1aug equipment for downstream sulfur production.
これらの問題は選択的除去法の採用によって回避される
。These problems are avoided by employing selective removal methods.
(3) C1aug装置からのオフガスの精製法の1
つは、残留イ才つ化合物を還元して!1.Sとし、不活
性ガス及びCO7からH3Sを分離し、濃縮HlS流を
C1aus装置に再循環することからなる。(3) Method 1 of purifying off-gas from C1aug equipment
First, reduce residual compounds! 1. S, separating H3S from inert gas and CO7 and recycling the concentrated H1S stream to the C1aus device.
この場合、選択除去法が必須であり、他の方法では、C
O7を系から取出すことができない。In this case, a selective elimination method is essential; in other methods, C
O7 cannot be removed from the system.
二酸化炭素から硫化水素を選択的に分離することは、こ
れら化合物がそれ自体酸性であり、又は酸性となりうる
ちのであるため、かなり困難な間迎入くある。Selective separation of hydrogen sulfide from carbon dioxide poses considerable difficulties because these compounds are themselves acidic or can become acidic.
従来の方法は、吸収工程及び再生工程でなるものである
。吸収域において、再生された溶液で洗浄することによ
って粗製ガスを精製して112s及びCO2を除去する
。ついで、再生域において、吸収工程で得られた溶液を
水蒸気又は不活性ガスによってストリッピングして再生
する。The conventional method consists of an absorption step and a regeneration step. In the absorption zone, the crude gas is purified to remove 112s and CO2 by washing with the regenerated solution. Then, in the regeneration zone, the solution obtained in the absorption step is stripped and regenerated with steam or inert gas.
この場合、再生域では何ら問題がないが、吸収域では、
いくつかの問題かある。実際、不用化合物の除去により
熱が発生し、この域を加熱するため、吸収される酸性物
質の量が低下する。従って、吸収剤溶液の循環量が多く
なる。In this case, there is no problem in the regeneration region, but in the absorption region,
There are some problems. In fact, the removal of unwanted compounds generates heat that heats this area, thereby reducing the amount of acidic substances absorbed. Therefore, the amount of circulating absorbent solution increases.
実施されることはほとんどないが、アミン系吸収剤溶液
の循環量を低下させるため、吸収工程の間に、吸収塔の
好適な棚段から取出すことによって吸収剤溶液を1回又
は数回冷却し、冷却後、その直下の棚段に再導入するこ
とが知られている。Although rarely practiced, in order to reduce the circulation rate of the amine-based absorbent solution, the absorbent solution may be cooled one or more times during the absorption process by being removed from a suitable tray of the absorption column. It is known that, after cooling, it is reintroduced to the shelf directly below it.
充填吸収塔の場合、冷却を行なうことは\各冷却につい
て、吸収剤溶液を集め、取出しするために塔内にスタッ
クプレート(stack −plate)を挿入する必
要があり、構造上煩雑である。しかし、充填吸収塔が棚
段吸収塔よりも多くの場合安価であるため、かかる煩雑
さ及びこれに関するコストら許容されることが多い。In the case of packed absorption towers, performing the cooling is structurally complicated, requiring the insertion of stack-plates into the tower to collect and remove the absorbent solution for each cooling. However, since packed absorption towers are often cheaper than trayed absorption towers, such complexity and associated costs are often tolerated.
発明者らは、後述する特定の第3扱アミン、及び/又は
立体障害第1@及び/又は第2扱アミンを使用すること
により、硫化水素、及び/又は他のイオウ化合物(CO
S、 CS、、メルカプタン)の二酸化炭素からの選択
分離によって生ずる問題を解消できることを見出し、本
発明に至った。The inventors have discovered that hydrogen sulfide and/or other sulfur compounds (CO
It has been discovered that the problems caused by the selective separation of S, CS, mercaptans) from carbon dioxide can be solved, leading to the present invention.
本発明による方法の重要な点は、第3級アミン及び/又
は立体障害第1級及び/又は第2級アミノの水及び/又
は有機溶媒の溶液を使用することである。An important aspect of the process according to the invention is the use of solutions of tertiary amines and/or sterically hindered primary and/or secondary aminos in water and/or organic solvents.
この第3級アミンは、アンモニアの3個の水素原子がア
ルキル基又はアルカノール基によって置換されたものの
中から選択される。この場合、アルキル基は直鎖状又は
分枝状に配列するlないし4@の炭素原子を含有してい
なければならない。The tertiary amine is selected from ammonia in which three hydrogen atoms are replaced by alkyl or alkanol groups. In this case, the alkyl group must contain 1 to 4 carbon atoms arranged in a straight or branched chain.
アルカノール基は直鎖状又は分枝状に配列する2ないし
4個の炭素原子を含有していなければならない。アルカ
ノール基におけるヒドロキノル官能ノール基である。The alkanol group must contain 2 to 4 carbon atoms arranged in a straight or branched chain. Hydroquinol is a functional alcohol group in an alkanol group.
好適な第3扱アミンは、メチルノエタノールアミン、ツ
メチルエタノールアミン、エチルジェタノールアミン、
ノエチルエタノールアミン、メチルノイソブロビルアミ
ン、ノイソブルビルエタノールアミン、N、N−ジメタ
ノ−ルー2−アミノ−2−メチルプロパン−1−オール
、N、N−ジメチル−2−アミノ−2−メチルブタン−
■−オール、プロピルジイソプロパノールアミン、2−
ジメチルアミノ−2−メチル−1,3−プロパンツオー
ル、2−メチル−2−(メチル−β−ヒドロキンエチル
アミノ)−1−プロパツール、N。Suitable tertiary amines include methylnoethanolamine, trimethylethanolamine, ethyljetanolamine,
Noethylethanolamine, Methylnoisobrobylamine, Noisobrobylethanolamine, N,N-dimethanol-2-amino-2-methylpropan-1-ol, N,N-dimethyl-2-amino-2- Methyl butane
■-ol, propyldiisopropanolamine, 2-
Dimethylamino-2-methyl-1,3-propantool, 2-methyl-2-(methyl-β-hydroquinethylamino)-1-propantool, N.
N−ツメチル−2−アミノ−プロパン−1−オールであ
る。N-tmethyl-2-amino-propan-1-ol.
本発明で有利に使用される立体障害第1級及び第2級ア
ミンの中でも、ジアミノエーテル(アミノ基の一方又は
両方が第3級であってもよい)及びアミノアルコール(
エーテル基を含有していてもよい)か好適である。Among the sterically hindered primary and secondary amines advantageously used in the present invention, diamino ethers (one or both of the amino groups may be tertiary) and amino alcohols (
(which may contain an ether group) are preferred.
好適な立体障害アミンとしては、1.2−ビス= (第
3級ブチルアミノエトキシ)−エタン、l−(ピロリジ
ニルエトキシ)−2−(第3級ブチルアミノエトキシ)
−エタン、第3級ブチルアミノエトキシエタノール、2
(2−第3級ブチルアミノ)−プロポキンエタノール、
2−(2−イソプロピルアミノ)−プロポキンエタノー
ル、第3級アミルアミノエトキンエタノール、 (l−
メチル−l−エチルプロピルアミノ)−エトキシエタノ
ール、N−メチル−N−第3級ブチルアミノエトキンエ
タノール、2−(N−イソプロピル−N−メチルアミノ
)−プロポキシエタノール、3−アザ−2,2,3−ト
リメチル−1,6−ヘキサンジオール、第3級ブチルア
ミノエタノール、2−第3級ブチルアミノ−1−プロパ
ツール、2−イソプロピルアミノ−I−プロパツール、
(3−第3級ブチルアミノ)−n−ブタノール、3−ア
ザ−2,2−ツメチル−1,6−ヘキサンジオール、3
−第3級ブチルアミノ−■−プロパツール、ビス(第3
級ブチルアミノエチル)−エーテル、1.2−ビス−(
第3級ブチルアミノエトキン)−エタン、ビス−(2−
イソプロピルアミノプロピル)−エーテル、■、2−ビ
スー(ピロリジニルエトキシ)エタン、1.2−ビス−
(3−ピロリジニル−n−プロポキシ)−エタン、ビス
−(N−ピロリノニルエチル)−エーテル、1.2−ビ
ス−(ピペリノニルエトキシ)−エタン、l−(ピロリ
ノニルエトキシ)−2−(第3級ブチルアミノエトキシ
)−エタンがある。Suitable sterically hindered amines include 1,2-bis=(tert-butylaminoethoxy)-ethane, l-(pyrrolidinylethoxy)-2-(tert-butylaminoethoxy)
-ethane, tertiary butylaminoethoxyethanol, 2
(2-tertiary butylamino)-propoquine ethanol,
2-(2-isopropylamino)-propoquine ethanol, tertiary amyl aminoethine ethanol, (l-
Methyl-l-ethylpropylamino)-ethoxyethanol, N-methyl-N-tert-butylaminoethquinethanol, 2-(N-isopropyl-N-methylamino)-propoxyethanol, 3-aza-2,2 , 3-trimethyl-1,6-hexanediol, tertiary-butylaminoethanol, 2-tertiary-butylamino-1-propanol, 2-isopropylamino-I-propanol,
(3-tertiary butylamino)-n-butanol, 3-aza-2,2-tmethyl-1,6-hexanediol, 3
-Tertiary butylamino-■-propatol, bis(tertiary
butylaminoethyl)-ether, 1,2-bis-(
tertiary butylaminoethquine)-ethane, bis-(2-
isopropylaminopropyl)-ether, ■, 2-bis(pyrrolidinylethoxy)ethane, 1,2-bis-
(3-pyrrolidinyl-n-propoxy)-ethane, bis-(N-pyrrolinonylethyl)-ether, 1,2-bis-(piperinonylethoxy)-ethane, l-(pyrrolinonylethoxy)-2-( There is tertiary butylaminoethoxy)-ethane.
これらアミンは単独で、又は相互に混合して使用される
。These amines may be used alone or in admixture with one another.
有機溶媒は、N−メチル−3−モルホリン、スルホラン
、N−メチル−ピロリドン、N−フェニル−モルホリン
、N、N−ツメチルイミダゾリジン−2−オン、メタノ
ール、N−メチル−イミダゾール、n−ブタノールから
選ばれる。これらの溶媒は単独で、又は相互に、混合し
て使用される。Organic solvents include N-methyl-3-morpholine, sulfolane, N-methyl-pyrrolidone, N-phenyl-morpholine, N,N-tumethylimidazolidin-2-one, methanol, N-methyl-imidazole, n-butanol. selected from. These solvents may be used alone or in admixture with each other.
循環溶液における各成分の含量は好ましくは下記の如く
である。The content of each component in the circulating solution is preferably as follows.
アミン:20ないし96重量%、好適には20ないし9
0重M%、最適には30ないし50重量%水 、2な
いし70重量%、好適には4ないし22重量%
何機溶媒(必要な場合)・残余
本発明による方法は、吸収装置内で天然ガス又は合成ガ
ス中に含有されるイオウ化合物を吸収剤溶液により吸収
する吸収段階と、再生装置内で吸収剤溶液を水蒸気又は
不活性ガスによりストリッピングを介して再生する再生
段階とを包含する。Amine: 20 to 96% by weight, preferably 20 to 9
0 wt. It includes an absorption stage in which the sulfur compounds contained in the gas or synthesis gas are absorbed by an absorbent solution, and a regeneration stage in which the absorbent solution is regenerated in a regenerator through stripping with steam or inert gas.
本発明の他の基本的な特徴は、吸収装置を出るガスを再
生された溶液と混合し、ついで得られた混合物を熱交換
器において冷却し、吸収剤溶液から精製されたガスを分
離し、吸収剤溶液を吸収塔の頂部に供給することにある
。Other essential features of the invention are: mixing the gas leaving the absorber with the regenerated solution, then cooling the resulting mixture in a heat exchanger, separating the purified gas from the absorbent solution; The purpose is to feed the absorbent solution to the top of the absorption column.
吸収塔は棚段形又は充填形のいずれでもよい。The absorption tower may be of either a tray type or a packed type.
実際、かかる冷却装置により充填吸収塔の場合にも、上
述の構造上の煩雑な措置を施す必要がないとの利点が得
られる。In fact, such a cooling device provides the advantage that even in the case of a packed absorption tower, there is no need to take the above-mentioned complicated structural measures.
吸収剤溶液と吸収塔の塔頂を出るガスとを良好に混合さ
せるために、塔頂ガス流への導入前に霧状とするか、又
はエジェクタ (駆動流体として吸収剤溶液を使用する
)により、又はベンチュリスクラッバを使用することに
より、塔頂ガス流を吸引することができろ。In order to achieve good mixing of the absorbent solution and the gas leaving the top of the absorption column, it can be atomized before introduction into the overhead gas stream or by an ejector (using the absorbent solution as the driving fluid). Alternatively, the overhead gas stream could be aspirated by using a Venturi scrubber.
本発明の方法は、特にl12S及びさらに少なくともl
のイオウ化合物(COS、 C3,、メルカプタン)を
選択除去する場合に好適である。The method of the invention particularly provides l12S and furthermore at least l12S.
Suitable for selectively removing sulfur compounds (COS, C3, mercaptans).
本発明をさらに説明するためいくつかの実施例を例示す
るが、これらの実施例は本発明を限定するものではない
。Some examples are illustrated to further explain the invention, but these examples are not intended to limit the invention.
実施例1−2
Has 1.600 (重量%)C
o、 12.500
CH,85,864
COS 0.017
CH3SlI O,019100,000
(重量%)
流119289.5にモル/時間の粗製ガスを、本発明
の方法に従い、第3級アミンの水溶液(実施例1)及び
第3級アミンの主として有機溶媒でなる溶液(実施例2
)で処理した。いずれの場合にも、塔頂ガスと混合した
再生溶液を冷却するための冷却器として吸収器+7段理
論棚段形吸収器を使用した。Example 1-2 Has 1.600 (wt%)C
o, 12.500 CH,85,864 COS 0.017 CH3SlI O,019100,000
(% by weight) mol/h of crude gas in stream 119289.5 was prepared according to the process of the invention by an aqueous solution of a tertiary amine (Example 1) and a solution of a tertiary amine consisting mainly of an organic solvent (Example 2).
) was processed. In both cases, an absorber plus a 7-stage theoretical tray absorber was used as a cooler for cooling the regenerated solution mixed with the overhead gas.
下記の表に示す結果が得られた。なお表には、操作条件
らしめしである。The results shown in the table below were obtained. The table shows the operating conditions.
比較例1−2
上述のものと同じ粗製ガスを、実施例1と同じアミン水
溶液(比較例1)及び実施例2と同じアミンの主として
有機溶媒でなる溶液(比較例2)で処理した。8段理論
棚段形吸収器及びインタークーラ2個を使用し、吸収装
置を出るガスを再生された吸収剤溶液と混合することな
く操作を行ない、次表に示す結果を得た。Comparative Examples 1-2 The same crude gas as described above was treated with the same aqueous amine solution as in Example 1 (Comparative Example 1) and the same predominantly organic solvent solution of the amine as in Example 2 (Comparative Example 2). Using an 8-stage theoretical tray absorber and two intercoolers, the operation was carried out without mixing the gas exiting the absorber with the regenerated absorbent solution, with the results shown in the following table.
iIl ≧ :N 灸 坏@閉側μ) Ul
0り
、 w (y) tn > u’h! ロ I
八 八
上記表から、本発明の方法を採用することにより、吸収
剤溶液の循環量を低減でき、これにより、コストの低下
が可能となることが理解される。iIl ≧ :N Moxibustion @closed side μ) Ul
0ri, w (y) tn >u'h! B I 8 8 From the above table, it is understood that by employing the method of the present invention, the amount of circulating absorbent solution can be reduced, thereby making it possible to reduce costs.
Claims (1)
_2S、COS、CS_2、メルカプタンを、それぞれ
単独で又は混合物として除去するにあたり、吸収域にお
いて、吸収塔内で前記天然ガス又は合成ガス中に含有さ
れるイオウ化合物を吸収剤溶液により吸収すると共に、
再生域において、前記吸収剤溶液の再生を行なう酸性ガ
スの選択除去法において、前記吸収塔を出るガスを再生
された溶液と混合し、これにより得られた混合物を冷却
後、精製されたガスと吸収剤溶液とに分離し、この吸収
剤溶液を前記吸収塔の頂部に供給するものであって、前
記吸収剤溶液が、 (A)i、炭素数1ないし4の直鎖状または分枝状のア
ルキル基、炭素数が2ないし5であって、これらの炭素
のいずれかに2以下のヒドロキシル基が結合したアルカ
ノール基及びこれらアルキル基又はアルカノール基と同
一又は異なる第3のアルキル基又はアルカノール基の3
つの基が窒素原子に結合してなる第3級アミン、及び ii、ジアミノエステル及びアミノアルコール(エーテ
ル基を含有していてもよい)に属する立体障害第1級及
び/又は第2級アミン から選ばれる1又はそれ以上のアミン、及び(B)前記
アミン及び水の両者を溶液中単一液相に保持しうる化合
物から選ばれる1又はそれ以上の有機溶媒及び/又は水
、 で構成されるものであることを特徴とする、酸性ガスの
選択除去法。 2 特許請求の範囲第1項記載の方法において、前記第
3級アミンが、メチルジエタノールアミン、ジメチルエ
タノールアミン、エチルジエタノールアミン、ジエチル
エタノールアミン、メチルジイソプロピルアミン、ジイ
ソプルピルエタノールアミン、N,N−ジメタノール−
2−アミノ−2−メチルプロパン−1−オール、N,N
−ジメチル−2−アミノ−2−メチルブタン−1−オー
ル、プロピルジイソプロパノールアミン、2−ジメチル
アミノ−2−メチル−1,3−プロパンジオール、2−
メチル−2−(メチル−β−ヒドロキシエチルアミノ)
−1−プロパノール、N,N−ジメチル−2−アミノ−
プロパン−1−オール単独又はこれらの混合物である、
酸性ガスの選択除去法。 3 特許請求の範囲第1項記載の方法において、前記立
体障害アミンが、1,2−ビス−(第3級ブチルアミノ
エトキシ)−エタン、1−(ピロリジニルエトキシ)−
2−(第3級ブチルアミノエトキシ)−エタン、第3級
ブチルアミノエトキシエタノール、2−(2−第3級ブ
チルアミノ)−プロポキシエタノール、2−(2−イソ
プロピルアミノ)−プロポキシエタノール、第3級アミ
ルアミノエトキシエタノール、(1−メチル−1−エチ
ルプロピルアミノ)−エトキシエタノール、N−メチル
−N−第3級ブチルアミノエトキシエタノール、2−(
N−イソプロピル−N−メチルアミノ)−プロポキシエ
タノール、3−アザ−2,2,3−トリメチル−1,6
−ヘキサンジオール、第3級ブチルアミノエタノール、
2−第3級ブチルアミノ−1−プロパノール、2−イソ
プロピルアミノ−1−プロパノール、(3−第3級ブチ
ルアミノ)−n−ブタノール、3−アザ−2,2−ジメ
チル−1,6−ヘキサンジオール、3−第3級ブチルア
ミノ−1−プロパノール、ビス(第3級ブチルアミノエ
チル)−エーテル、1,2−ビス−(第3級ブチルアミ
ノエトキシ)−エタン、ビス−(2−イソプロピルアミ
ノプロピル)−エーテル、1,2−ビス−(ピロリジニ
ルエトキシ)エタン、1,2−ビス−(3−ピロリジニ
ル−n−プロポキシ)−エタン、ビス−(N−ピロリジ
ニルエチル)−エーテル、1,2−ビス−(ピペリジニ
ルエトキシ)−エタン、1−(ピロリジニルエトキシ)
−2−(第3級ブチルアミノエトキシ)−エタン単独又
はこれらの混合物である、酸性ガスの選択除去法。 4 特許請求の範囲第1項記載の製法において、前記有
機溶媒が、N−メチル−3−モルホリン、スルホラン、
N−メチルピロリドン、N,N−ジメチルイミダゾリジ
ン−2−オン、メタノール、N−メチル−イミダゾール
、n−ブタノール単独又はこれらの混合物である、酸性
ガスの選択除去法。 5 特許請求の範囲第1項記載の方法において、前記吸
収剤溶液が、アミン20ないし90重量%、水2ないし
70重量%、好ましくは4ないし22重量%、必要であ
れば有機溶媒残余でなる、酸性ガスの選択除去法。 6 特許請求の範囲第1項記載の方法において、前記吸
収塔塔頂ガスと再生された溶液との混合を、冷却装置導
入前に、再生された溶液を前記吸収塔塔頂ガスと共に噴
霧せしめることにより行なう、酸性ガスの選択除去法。 7 特許請求の範囲第6項記載の方法において、前記混
合を、駆動流体として前記再生された溶液を使用するエ
ジェクタによって行なう、酸性ガスの選択除去法。 8 特許請求の範囲第6項記載の方法において、前記混
合を、ベンチュリスクラッバによって行なう、酸性ガス
の選択除去法。 9 特許請求の範囲第2項又は第3項記載の方法におい
て、前記アミンを混合して使用する、酸性ガスの選択除
去法。 10 特許請求の範囲第1項記載の方法において、前記
吸収剤溶液がアミン20ないし96重量%を含有するも
のである、酸性ガスの選択除去法。[Claims] 1 H from natural gas or synthetic gas that also contains CO_2
In removing _2S, COS, CS_2, and mercaptan, each singly or as a mixture, in the absorption zone, the sulfur compounds contained in the natural gas or synthesis gas are absorbed in the absorption tower by an absorbent solution, and
In the selective removal method of acid gas in which the absorbent solution is regenerated in the regeneration zone, the gas exiting the absorption tower is mixed with the regenerated solution, and the resulting mixture is cooled and then mixed with the purified gas. and an absorbent solution, and this absorbent solution is supplied to the top of the absorption tower, wherein (A) i, a linear or branched chain having 1 to 4 carbon atoms; an alkyl group having 2 to 5 carbon atoms, an alkanol group having 2 or less hydroxyl groups bonded to any of these carbon atoms, and a tertiary alkyl group or alkanol group that is the same as or different from these alkyl groups or alkanol groups. No. 3
ii) sterically hindered primary and/or secondary amines belonging to diamino esters and amino alcohols (which may contain ether groups); and (B) one or more organic solvents and/or water selected from compounds capable of maintaining both the amine and water in a single liquid phase in solution. A selective removal method for acidic gases, characterized in that: 2. The method according to claim 1, wherein the tertiary amine is methyldiethanolamine, dimethylethanolamine, ethyldiethanolamine, diethylethanolamine, methyldiisopropylamine, diisopropylethanolamine, N,N-diethanolamine, Methanol-
2-amino-2-methylpropan-1-ol, N,N
-dimethyl-2-amino-2-methylbutan-1-ol, propyldiisopropanolamine, 2-dimethylamino-2-methyl-1,3-propanediol, 2-
Methyl-2-(methyl-β-hydroxyethylamino)
-1-propanol, N,N-dimethyl-2-amino-
Propan-1-ol alone or a mixture thereof,
Selective removal method for acidic gases. 3. The method according to claim 1, wherein the sterically hindered amine is 1,2-bis-(tert-butylaminoethoxy)-ethane, 1-(pyrrolidinylethoxy)-
2-(tert-butylaminoethoxy)-ethane, tertiary-butylaminoethoxyethanol, 2-(2-tert-butylamino)-propoxyethanol, 2-(2-isopropylamino)-propoxyethanol, tertiary amylaminoethoxyethanol, (1-methyl-1-ethylpropylamino)-ethoxyethanol, N-methyl-N-tert-butylaminoethoxyethanol, 2-(
N-isopropyl-N-methylamino)-propoxyethanol, 3-aza-2,2,3-trimethyl-1,6
-hexanediol, tertiary butylaminoethanol,
2-tert-butylamino-1-propanol, 2-isopropylamino-1-propanol, (3-tert-butylamino)-n-butanol, 3-aza-2,2-dimethyl-1,6-hexane Diol, 3-tert-butylamino-1-propanol, bis(tert-butylaminoethyl)-ether, 1,2-bis-(tert-butylaminoethoxy)-ethane, bis-(2-isopropylamino) propyl)-ether, 1,2-bis-(pyrrolidinylethoxy)ethane, 1,2-bis-(3-pyrrolidinyl-n-propoxy)-ethane, bis-(N-pyrrolidinylethyl)-ether, 1,2-bis-(piperidinylethoxy)-ethane, 1-(pyrrolidinylethoxy)
- A method for selectively removing acidic gas, which is 2-(tert-butylaminoethoxy)-ethane alone or a mixture thereof. 4. The method according to claim 1, wherein the organic solvent is N-methyl-3-morpholine, sulfolane,
A method for selectively removing an acid gas which is N-methylpyrrolidone, N,N-dimethylimidazolidin-2-one, methanol, N-methyl-imidazole, n-butanol alone or a mixture thereof. 5. The method according to claim 1, wherein the absorbent solution comprises 20 to 90% by weight of amine, 2 to 70% by weight of water, preferably 4 to 22% by weight, and if necessary a balance of organic solvent. , selective removal method of acid gas. 6. In the method according to claim 1, the mixture of the absorption tower top gas and the regenerated solution is made to spray the regenerated solution together with the absorption tower top gas before introducing a cooling device. A selective removal method for acidic gases. 7. A method according to claim 6, wherein said mixing is performed by an ejector using said regenerated solution as a driving fluid. 8. A method for selectively removing acid gas according to claim 6, wherein the mixing is performed using a Venturi scrubber. 9. A method for selectively removing acidic gases in the method according to claim 2 or 3, which uses a mixture of the amines. 10. The method according to claim 1, wherein the absorbent solution contains 20 to 96% by weight of amine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20757/86A IT1191805B (en) | 1986-06-11 | 1986-06-11 | PROCESS FOR SELECTIVE REMOVAL OF SULPHIDIC ACID |
IT20757A/86 | 1986-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62292888A true JPS62292888A (en) | 1987-12-19 |
Family
ID=11171618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62144203A Pending JPS62292888A (en) | 1986-06-11 | 1987-06-11 | Selective removal of acidic gas |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS62292888A (en) |
DE (1) | DE3717556C2 (en) |
GB (1) | GB2191419B (en) |
IT (1) | IT1191805B (en) |
NO (1) | NO872369L (en) |
NZ (1) | NZ220366A (en) |
SE (1) | SE8702301L (en) |
Cited By (3)
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JP2006523255A (en) * | 2003-03-21 | 2006-10-12 | ダウ グローバル テクノロジーズ インコーポレイティド | Improved composition and method for removing it from acid gases containing carbonyl sulfide |
JP2013543789A (en) * | 2010-10-29 | 2013-12-09 | ハンツマン ペトロケミカル エルエルシー | Use of 2- (3-aminopropoxy) ethane-1-ol as adsorbent for removal of acid gases |
JP2014511759A (en) * | 2011-03-28 | 2014-05-19 | ザ ボード オブ トラスティーズ オブ ザ ユニヴァーシティ オブ アラバマ | N-functionalized imidazole-containing system and method of use |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2895325B2 (en) * | 1992-09-16 | 1999-05-24 | 関西電力株式会社 | Method for removing carbon dioxide in flue gas |
US6689332B1 (en) | 1992-09-16 | 2004-02-10 | The Kansai Electric Power Co, Inc. | Process for removing carbon dioxide from combustion gases |
DE69528785T2 (en) * | 1994-03-18 | 2003-07-03 | Mitsubishi Jukogyo K.K., Tokio/Tokyo | Process for removing hydrogen sulfide from gases |
US5861051A (en) * | 1996-03-06 | 1999-01-19 | Huntsman Petrochemical Corporation | Process for removing carbon dioxide from gas mixture |
US6051056A (en) | 1998-03-20 | 2000-04-18 | Air Products And Chemicals, Inc. | Alkylated aminoether surfactants |
DE19933301A1 (en) | 1999-07-15 | 2001-01-18 | Basf Ag | Process for removing mercaptans from fluid streams |
FR2848218B1 (en) * | 2002-12-10 | 2005-01-28 | Inst Francais Du Petrole | PROCESS FOR DEACIDIFYING AND DEHYDRATING A NATURAL GAS |
FR2961114B1 (en) * | 2010-06-09 | 2013-11-29 | Inst Francais Du Petrole | PROCESS FOR REMOVING CO 2 IN COMBUSTION FUMES AND ABSORBENT SOLUTION BASED ON DIAMINES BELONGING TO THE 1,2-BIS (2-AMINOETHOXY) ETHANE FAMILY |
FR2982170B1 (en) | 2011-11-09 | 2013-11-22 | IFP Energies Nouvelles | PROCESS FOR REMOVING ACIDIC COMPOUNDS FROM A GASEOUS EFFLUENT WITH AN ABSORBENT SOLUTION BASED ON DIHYDROXYALKYLAMINES HAVING A SEVERE STERIC SIZE OF THE NITROGEN ATOM |
FR2992229B1 (en) | 2012-06-26 | 2015-10-30 | IFP Energies Nouvelles | ABSORBENT SOLUTION BASED ON TERTIARY DIAMINS BELONGING TO THE AMINOETHYLMORPHOLINES FAMILY AND METHOD FOR REMOVING ACIDIC COMPOUNDS FROM A GASEOUS EFFLUENT |
MX2018004013A (en) * | 2015-09-29 | 2018-05-23 | Basf Se | Absorption agent and a method for selectively removing hydrogen sulphide. |
EP3356015A2 (en) | 2015-09-29 | 2018-08-08 | Basf Se | Method for the selective removal of hydrogen sulfide |
US11458433B2 (en) | 2017-09-04 | 2022-10-04 | Basf Se | Absorbent and process for selectively removing hydrogen sulfide |
CN110876878A (en) * | 2018-09-06 | 2020-03-13 | 中国石油化工股份有限公司 | SO2Absorbent and absorption of SO2Method (2) |
CN109499335A (en) * | 2018-11-14 | 2019-03-22 | 江苏科创石化有限公司 | A kind of bulky amine composite desulfurizing agent |
CN111744350A (en) * | 2019-03-29 | 2020-10-09 | 中国石油天然气股份有限公司 | Desulfurizing agent and preparation method thereof |
CN116550100A (en) * | 2023-05-30 | 2023-08-08 | 江苏太湖新材料控股有限公司 | Desulfurizing agent and preparation method thereof |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1058304A (en) * | 1964-03-12 | 1967-02-08 | Shell Int Research | Process for the purification of fluids |
GB1153786A (en) * | 1966-08-09 | 1969-05-29 | Shell Int Research | Removal of Acid Gases from Gaseous Mixtures |
GB1279637A (en) * | 1968-10-31 | 1972-06-28 | Lummus Co | Solvent and process for acid gas scrubbing |
US4057403A (en) * | 1973-10-29 | 1977-11-08 | Fluor Corporation | Gas treating process |
NL183225C (en) * | 1975-06-13 | 1988-09-01 | Shell Int Research | METHOD FOR REMOVING ACID GASES FROM A GAS OR LIQUID MIXTURE USING AN AQUEOUS AMINE SOLUTION |
AU506199B2 (en) * | 1975-06-26 | 1979-12-20 | Exxon Research And Engineering Company | Absorbtion of co2 from gaseous feeds |
US4100257A (en) * | 1977-02-14 | 1978-07-11 | Exxon Research & Engineering Co. | Process and amine-solvent absorbent for removing acidic gases from gaseous mixtures |
GB1589231A (en) * | 1977-04-21 | 1981-05-07 | Shell Int Research | Process for the removal of acidic gases |
CA1169231A (en) * | 1981-01-28 | 1984-06-19 | Kenneth F. Butwell | Process for removing acidic gases from gaseous mixtures |
DE3362219D1 (en) * | 1982-01-18 | 1986-04-03 | Exxon Research Engineering Co | A process for the removal of h2s from gaseous mixtures using diaminoethers |
DE3365032D1 (en) * | 1982-01-18 | 1986-09-11 | Exxon Research Engineering Co | A process for removal of h2s from gaseous streams with amino compounds |
EP0087208B1 (en) * | 1982-01-18 | 1986-02-26 | Exxon Research And Engineering Company | A process for removal of hydrogen sulfide from gaseous mixtures with severely sterically hindered secondary amino compounds |
DE3236601A1 (en) * | 1982-10-02 | 1984-04-05 | Basf Ag, 6700 Ludwigshafen | METHOD FOR REMOVING CO (DOWN ARROW) 2 (DOWN ARROW) AND / OR H (DOWN ARROW) 2 (DOWN ARROW) S FROM GASES |
EP0124835A3 (en) * | 1983-05-04 | 1987-09-30 | Air Products And Chemicals, Inc. | Bis tertiary amino alkyl derivatives as solvents for acid gas removal from gas streams |
EP0134948A3 (en) * | 1983-06-30 | 1987-10-14 | Union Carbide Corporation | Absorbent formulation for enhanced removal of acid gases from gas mixtures and processes using same |
-
1986
- 1986-06-11 IT IT20757/86A patent/IT1191805B/en active
-
1987
- 1987-05-19 NZ NZ220366A patent/NZ220366A/en unknown
- 1987-05-21 GB GB8712025A patent/GB2191419B/en not_active Expired - Fee Related
- 1987-05-25 DE DE3717556A patent/DE3717556C2/en not_active Revoked
- 1987-06-02 SE SE8702301A patent/SE8702301L/en not_active Application Discontinuation
- 1987-06-05 NO NO872369A patent/NO872369L/en unknown
- 1987-06-11 JP JP62144203A patent/JPS62292888A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006523255A (en) * | 2003-03-21 | 2006-10-12 | ダウ グローバル テクノロジーズ インコーポレイティド | Improved composition and method for removing it from acid gases containing carbonyl sulfide |
JP2011088144A (en) * | 2003-03-21 | 2011-05-06 | Dow Global Technologies Llc | Improved composition and method for removing carbonyl sulfide from acid gas containing the sulfide |
KR101148658B1 (en) | 2003-03-21 | 2012-05-25 | 다우 글로벌 테크놀로지스 엘엘씨 | Improved composition and method for removal of carbonyl sulfide from acid gas containing same |
JP2013543789A (en) * | 2010-10-29 | 2013-12-09 | ハンツマン ペトロケミカル エルエルシー | Use of 2- (3-aminopropoxy) ethane-1-ol as adsorbent for removal of acid gases |
JP2014511759A (en) * | 2011-03-28 | 2014-05-19 | ザ ボード オブ トラスティーズ オブ ザ ユニヴァーシティ オブ アラバマ | N-functionalized imidazole-containing system and method of use |
Also Published As
Publication number | Publication date |
---|---|
NO872369D0 (en) | 1987-06-05 |
SE8702301D0 (en) | 1987-06-02 |
GB8712025D0 (en) | 1987-06-24 |
IT8620757A0 (en) | 1986-06-11 |
GB2191419B (en) | 1990-04-25 |
DE3717556A1 (en) | 1987-12-17 |
IT8620757A1 (en) | 1987-12-11 |
GB2191419A (en) | 1987-12-16 |
SE8702301L (en) | 1987-12-12 |
DE3717556C2 (en) | 1994-04-28 |
NO872369L (en) | 1987-12-14 |
NZ220366A (en) | 1990-07-26 |
IT1191805B (en) | 1988-03-23 |
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