EP3177385A1 - Rückgewinnung von gasen, insbesondere permanentgasen, aus stoffströmen, insbesondere aus abgasströmen von polymerisationen - Google Patents
Rückgewinnung von gasen, insbesondere permanentgasen, aus stoffströmen, insbesondere aus abgasströmen von polymerisationenInfo
- Publication number
- EP3177385A1 EP3177385A1 EP15759631.3A EP15759631A EP3177385A1 EP 3177385 A1 EP3177385 A1 EP 3177385A1 EP 15759631 A EP15759631 A EP 15759631A EP 3177385 A1 EP3177385 A1 EP 3177385A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stream
- substance
- retentate
- permeate
- fraction
- 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.)
- Withdrawn
Links
- 239000007789 gas Substances 0.000 title claims description 27
- 238000006116 polymerization reaction Methods 0.000 title claims description 19
- 238000011084 recovery Methods 0.000 title description 5
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000000126 substance Substances 0.000 claims abstract description 32
- 239000012466 permeate Substances 0.000 claims abstract description 21
- 239000012465 retentate Substances 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 229920002492 poly(sulfone) Polymers 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims 1
- 210000003918 fraction a Anatomy 0.000 claims 1
- 229920006393 polyether sulfone Polymers 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000013014 purified material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- B01D53/22—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 diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
-
- 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
- B01D53/22—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 diffusion
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/144—Purification; Separation; Use of additives using membranes, e.g. selective permeation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/108—Hydrogen
Definitions
- the invention relates to a method for purifying a stream, wherein the stream has a C 2+ fraction and at least one first gaseous substance and a second gaseous substance different therefrom, wherein the stream is subjected to a pressure swing adsorption to remove the C 2+ fraction.
- EP 1 491 559 describes a process in which an inert gas from an exhaust gas stream of a polymer production plant can be purified by means of an adsorption process and subsequently reused.
- Polymerization solvent and the monomer are separated adsorptively from the exhaust stream, so that the purified, inert gas is present at high pressure.
- US Pat. No. 6,706,857 describes a process for the recovery of olefinic monomers from a polymerization process. This is a gas stream
- Monomer and nitrogen purified by pressure swing adsorption In the recovery of C 2+ hydrocarbons (ie hydrocarbons having two or more carbon atoms) from streams by pressure swing adsorption is usually a mixture of at least two permanent gas components as a high pressure product, which is often thermally recovered only by burning.
- the invention is based on the object of improving a method of the type mentioned at the outset in such a way that the range of uses of the high-gas product is widened.
- the stream after removal of the C 2+ fraction, is separated by means of a membrane into a retentate and a permeate, wherein the retentate is rich in the first material, and wherein the permeate is rich in the second material ,
- the first substance is thus preferably a substance which permeates worse through the membrane than the second substance, so that it is enriched in the retentate, whereas the second substance is depleted in the retentate.
- the second material is better permeated through the membrane than the first material, so that the second substance is enriched in the permeate and the first substance is depleted in the permeate.
- H 2 can be depleted to less than 1% by volume in the retentate.
- Wassertsoffkonzentrationen can be achieved above 40 vol .-%.
- the retentate is present at the same pressure level as the stream purified by the C 2+ fraction and can then be used accordingly, for example in a previous process - in particular without expensive compaction , Any pressure loss across the diaphragm, fittings and / or piping can be compensated by a blower. However, this is much less expensive compared to the situation in which the desired product is present on the permeate side.
- the first and second substances are preferably gases, which for historical reasons are also referred to as permanent gases. These are hydrogen, nitrogen, methane, carbon monoxide and carbon dioxide.
- the first substance is nitrogen and the second substance is hydrogen.
- the C 2+ fraction preferably comprises ethylene or propylene.
- Pressure swing adsorption of the C 2+ fraction purified stream used is at least one of the following: polysulfone (PSU), polyethersulfone (PES), polyimide (PI), polyamide (PA).
- PSU polysulfone
- PES polyethersulfone
- PI polyimide
- PA polyamide
- the material stream to be purified originates from an upstream of the Pressure swing adsorption performed process (eg, a process step or process in the form of a synthesis), wherein the stream is preferably an exhaust gas stream from such a process.
- the exhaust gas flow may be, for example, a purge gas or a stripping gas.
- the process or method is a polymerization. Under such a
- Polymerization in the present case is understood to mean a polyreaction (also called a polymer formation reaction, named after IUPAC "Polymerization"), i. a synthesis reaction that converts similar or different monomers into polymers.
- a polyreaction also called a polymer formation reaction, named after IUPAC "Polymerization”
- IUPAC polymer formation reaction
- polymerization may be a so-called chain polymerization or a so-called step growth reaction (e.g., polycondensation or polyaddition).
- the material stream is preferably an exhaust gas stream, in particular a purge gas stream which is obtained during a polymerization.
- Monomers used here such as, for example, ethylene or propylene (constituents of the C 2+ fraction), are then present in the stream of material or gas which further comprises, for example, nitrogen as the first substance (for example, if the polymer produced during the polymerization with nitrogen rinsed) and continue to use hydrogen as a second substance.
- the permeate for example containing hydrogen
- the permeate is preferably incinerated or, if appropriate, supplied as an export stream to another use.
- Fig. 1 is a schematic representation of an embodiment of a
- the method according to the invention makes it possible to separate a stream S, in particular in the form of an exhaust stream, consisting of at least two permanent gas components and at least one C 2+ hydrocarbon. This is in particular after an optional compression of the stream 5 in a first step, the C 2+ fraction separated by pressure swing adsorption (DWA) 10.
- DWA pressure swing adsorption
- the resulting C 2+ -free exhaust stream or stream S ' which is the high-pressure product of the DWA
- the fraction S "adsorbed in the pressure swing adsorption is desorbed at a lower pressure and optionally fed to another use
- the DWA is carried out at pressures of 5 bar to 30 bar and at a temperature of 10 ° C to 50 ° C.
- Permanent gas components are separated into the retentate R and permeate P and also recycled or otherwise used.
- the membrane separation is carried out at a pressure in the range of 5 bar to 30 bar and at a temperature in the range of 20 ° C to 80 ° C.
- a stream S in the form of a purge gas stream comprising nitrogen, hydrogen and a monomer such as ethylene or propylene.
- the high pressure product S ' only nitrogen and hydrogen.
- this gas stream can be obtained by adding a downstream membrane separation 20, a nitrogen-rich retentate R at high pressure and a hydrogen-enriched permeate P at low pressure, the pressure loss substantially when passing through the Membrane 20 occurs.
- the hydrogen-rich permeate stream P is furthermore preferably at least partially thermally utilized, it can be present at high pressure
- Nitrogen / retentate R can be recycled to the polymerization process 30, whereby the need for fresh nitrogen in the polymerization process can be reduced.
- N 2 is preferred for flushing the polymer outgassing container (PAB) or the
- Reactor itself used Especially with the PAB N 2 is used continuously.
- the recovery reduces the need for fresh N 2 , as well as reducing the amount of flaked fuel, which is an advantage under stringent environmental regulations.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014011750.2A DE102014011750A1 (de) | 2014-08-07 | 2014-08-07 | Rückgewinnung von Gasen, insbesondere Permanentgasen, aus Stoffströmen, insbesondere aus Abgasströmen von Polymerisationen |
EP14004421 | 2014-12-23 | ||
PCT/EP2015/001528 WO2016020042A1 (de) | 2014-08-07 | 2015-07-23 | Rückgewinnung von gasen, insbesondere permanentgasen, aus stoffströmen, insbesondere aus abgasströmen von polymerisationen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3177385A1 true EP3177385A1 (de) | 2017-06-14 |
Family
ID=54064259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15759631.3A Withdrawn EP3177385A1 (de) | 2014-08-07 | 2015-07-23 | Rückgewinnung von gasen, insbesondere permanentgasen, aus stoffströmen, insbesondere aus abgasströmen von polymerisationen |
Country Status (7)
Country | Link |
---|---|
US (1) | US10092876B2 (de) |
EP (1) | EP3177385A1 (de) |
CN (1) | CN107073390A (de) |
MY (1) | MY179140A (de) |
RU (1) | RU2687951C2 (de) |
SA (1) | SA517380846B1 (de) |
WO (1) | WO2016020042A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110114128B (zh) * | 2016-12-15 | 2022-09-13 | 切弗朗菲利浦化学公司 | 膜和变压吸附混合inru方法 |
DE102018009198A1 (de) * | 2018-11-22 | 2020-05-28 | Linde Aktiengesellschaft | Verfahren zum Wechsel der Betriebsweise einer Elektrolyseanlage sowie Elektrolyseanlage |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101757830A (zh) * | 2010-01-18 | 2010-06-30 | 党延斋 | 一种炼厂干气中c2、c3组分及氢气的回收方法 |
Family Cites Families (31)
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US4750925A (en) * | 1986-02-24 | 1988-06-14 | The Boc Group, Inc. | Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
GB2195654A (en) * | 1986-09-30 | 1988-04-13 | Shell Int Research | Process for recovery of hydrocarbons from a fluid feed |
US4701187A (en) * | 1986-11-03 | 1987-10-20 | Air Products And Chemicals, Inc. | Process for separating components of a gas stream |
US4881953A (en) * | 1988-09-15 | 1989-11-21 | Union Carbide Corporation | Prevention of membrane degradation |
US5354547A (en) * | 1989-11-14 | 1994-10-11 | Air Products And Chemicals, Inc. | Hydrogen recovery by adsorbent membranes |
US5245099A (en) * | 1992-07-22 | 1993-09-14 | Uop | PSA process for recovery or ethylene |
US5411721A (en) * | 1992-12-29 | 1995-05-02 | Uop | Process for the rejection of CO2 from natural gas |
US5669958A (en) * | 1996-02-29 | 1997-09-23 | Membrane Technology And Research, Inc. | Methane/nitrogen separation process |
US5856607A (en) * | 1996-05-03 | 1999-01-05 | Amoco Corporation | Process for production of ethylbenzene frome dilute ethylene streams |
DE19903566A1 (de) | 1999-01-29 | 2000-08-03 | Linde Ag | Verfahren zum Gewinnen einer Ethylen-reichen Fraktion |
US6592749B1 (en) * | 1999-03-19 | 2003-07-15 | Membrane Technology And Research, Inc. | Hydrogen/hydrocarbon separation process, including PSA and membranes |
US6303841B1 (en) * | 1999-10-04 | 2001-10-16 | Uop Llc | Process for producing ethylene |
US6592650B2 (en) * | 2000-05-19 | 2003-07-15 | Membrane Technology And Research, Inc. | Gas separation using organic-vapor-resistant membranes and PSA |
US6428606B1 (en) * | 2001-03-26 | 2002-08-06 | Membrane Technology And Research, Inc. | Membrane gas separation process with compressor interstage recycle |
US20030073788A1 (en) * | 2001-10-12 | 2003-04-17 | Golden Timothy Christopher | Recovery of olefin monomers |
EP1491559B1 (de) | 2002-03-29 | 2007-09-05 | Mitsui Chemicals, Inc. | Verfahren zur rückführung von abgas in einer polymerproduktionsanlage |
CN1713949A (zh) * | 2002-11-21 | 2005-12-28 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | 膜分离方法 |
US20040099138A1 (en) * | 2002-11-21 | 2004-05-27 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et | Membrane separation process |
US7025803B2 (en) * | 2002-12-02 | 2006-04-11 | L'Air Liquide Societe Anonyme A Directoire et Counsel de Surveillance Pour L'Etude et L'Exploration des Procedes Georges Claude | Methane recovery process |
RU2258691C1 (ru) * | 2004-02-04 | 2005-08-20 | Лапкин Александр Николаевич | Способ получения метанола |
WO2008143967A1 (en) * | 2007-05-18 | 2008-11-27 | Exxonmobil Research And Engineering Company | Removal of a target gas from a mixture of gases by swing adsorption with use of a turboexpander |
US7815713B2 (en) * | 2007-07-10 | 2010-10-19 | Manufactured Methane Corp. | Landfill gas purification method and system |
PL2296784T3 (pl) * | 2008-05-12 | 2014-02-28 | Membrane Tech And Research Inc | Sposób rozdziału gazów przy użyciu membran ze zmiataniem permeatu w celu usunięcia CO<sub>2 </sub>z gazów spalinowych |
EP2228358A1 (de) * | 2009-03-13 | 2010-09-15 | Methanol Casale S.A. | Wiedergewinnung von CO2 in einem Verfahren zur Synthese von Methanol |
US9676681B2 (en) * | 2011-01-19 | 2017-06-13 | Exxonmobil Chemical Patents Inc. | Method and apparatus for managing hydrogen content through the conversion of hydrocarbons into olefins |
CN102389682B (zh) * | 2011-08-02 | 2014-05-14 | 北京信诺海博石化科技发展有限公司 | 高低压吸附处理聚烯烃尾气工艺流程 |
US10087380B2 (en) * | 2013-06-05 | 2018-10-02 | Phillips 66 Company | Converting ethane to liquid fuels and chemicals |
EP3063224A4 (de) * | 2013-11-01 | 2017-06-21 | Virginia Tech Intellectual Properties, Inc. | Vernetzte polymer-zusammensetzungen für gastrennungsmembranen |
CN106068323B (zh) * | 2014-01-08 | 2019-09-06 | 希路瑞亚技术公司 | 乙烯成液体的***和方法 |
KR101929644B1 (ko) | 2014-04-16 | 2019-03-12 | 사우디 아라비안 오일 컴퍼니 | 클라우스 유닛에서 btex로 저 내지 중간 몰 퍼센트 황화수소 가스 피드를 처리하기 위한 개선된 황 회수 공정 |
US9328297B1 (en) * | 2015-06-16 | 2016-05-03 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
-
2015
- 2015-07-23 MY MYPI2017700392A patent/MY179140A/en unknown
- 2015-07-23 RU RU2017107200A patent/RU2687951C2/ru active
- 2015-07-23 EP EP15759631.3A patent/EP3177385A1/de not_active Withdrawn
- 2015-07-23 US US15/500,593 patent/US10092876B2/en active Active
- 2015-07-23 CN CN201580042134.2A patent/CN107073390A/zh active Pending
- 2015-07-23 WO PCT/EP2015/001528 patent/WO2016020042A1/de active Application Filing
-
2017
- 2017-02-06 SA SA517380846A patent/SA517380846B1/ar unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101757830A (zh) * | 2010-01-18 | 2010-06-30 | 党延斋 | 一种炼厂干气中c2、c3组分及氢气的回收方法 |
Also Published As
Publication number | Publication date |
---|---|
US20170209830A1 (en) | 2017-07-27 |
RU2687951C2 (ru) | 2019-05-16 |
US10092876B2 (en) | 2018-10-09 |
MY179140A (en) | 2020-10-28 |
SA517380846B1 (ar) | 2020-12-22 |
WO2016020042A1 (de) | 2016-02-11 |
RU2017107200A3 (de) | 2018-12-19 |
CN107073390A (zh) | 2017-08-18 |
RU2017107200A (ru) | 2018-09-07 |
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