WO2016020042A1 - 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 polymerisationen Download PDFInfo
- Publication number
- WO2016020042A1 WO2016020042A1 PCT/EP2015/001528 EP2015001528W WO2016020042A1 WO 2016020042 A1 WO2016020042 A1 WO 2016020042A1 EP 2015001528 W EP2015001528 W EP 2015001528W WO 2016020042 A1 WO2016020042 A1 WO 2016020042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stream
- substance
- retentate
- permeate
- fraction
- Prior art date
Links
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
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2017107200A RU2687951C2 (ru) | 2014-08-07 | 2015-07-23 | Извлечение газов, в частности неконденсирующихся газов, из массовых потоков, в частности из потоков отходящих газов с процессов полимеризации |
CN201580042134.2A CN107073390A (zh) | 2014-08-07 | 2015-07-23 | 从物料流中、尤其从来自聚合的排出气流中回收气体、尤其永久气体 |
EP15759631.3A EP3177385A1 (de) | 2014-08-07 | 2015-07-23 | Rückgewinnung von gasen, insbesondere permanentgasen, aus stoffströmen, insbesondere aus abgasströmen von polymerisationen |
US15/500,593 US10092876B2 (en) | 2014-08-07 | 2015-07-23 | Recovery of gases, especially permanent gases, from streams of matter, especially from offgas streams from polymerizations |
SA517380846A SA517380846B1 (ar) | 2014-08-07 | 2017-02-06 | استخراج غازات، بصفة خاصة غازات مستمرة، من تيارات من مادة، بصفة خاصة من تيارات غاز عادم من عمليات بلمرة |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014011750.2 | 2014-08-07 | ||
DE102014011750.2A DE102014011750A1 (de) | 2014-08-07 | 2014-08-07 | Rückgewinnung von Gasen, insbesondere Permanentgasen, aus Stoffströmen, insbesondere aus Abgasströmen von Polymerisationen |
EP14004421.5 | 2014-12-23 | ||
EP14004421 | 2014-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016020042A1 true WO2016020042A1 (de) | 2016-02-11 |
Family
ID=54064259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/001528 WO2016020042A1 (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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018111535A1 (en) * | 2016-12-15 | 2018-06-21 | Chevron Phillips Chemical Company Lp | Membrane and pressure swing adsorption hybrid inru process |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018009198A1 (de) * | 2018-11-22 | 2020-05-28 | Linde Aktiengesellschaft | Verfahren zum Wechsel der Betriebsweise einer Elektrolyseanlage sowie Elektrolyseanlage |
Citations (5)
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EP1024187A1 (de) * | 1999-01-29 | 2000-08-02 | Linde Aktiengesellschaft | Verfahren zum Gewinnen einer Ethylen-reichen Fraktion |
US6428606B1 (en) * | 2001-03-26 | 2002-08-06 | Membrane Technology And Research, Inc. | Membrane gas separation process with compressor interstage recycle |
EP1302478A1 (de) * | 2001-10-12 | 2003-04-16 | Air Products And Chemicals, Inc. | Rückgewinnung von Olefinen |
EP1491559A1 (de) | 2002-03-29 | 2004-12-29 | Mitsui Chemicals, Inc. | Verfahren zur rückführung von abgas in einer polymerproduktionsanlage |
WO2015160645A1 (en) * | 2014-04-16 | 2015-10-22 | Saudi Arabian Oil Company | Improved sulfur recovery process for treating low to medium mole percent hydrogen sulfide gas feeds with btex in a claus unit |
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GB2195654A (en) * | 1986-09-30 | 1988-04-13 | Shell Int Research | Process for recovery of hydrocarbons from a fluid feed |
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-
2015
- 2015-07-23 WO PCT/EP2015/001528 patent/WO2016020042A1/de active Application Filing
- 2015-07-23 MY MYPI2017700392A patent/MY179140A/en unknown
- 2015-07-23 US US15/500,593 patent/US10092876B2/en active Active
- 2015-07-23 RU RU2017107200A patent/RU2687951C2/ru active
- 2015-07-23 CN CN201580042134.2A patent/CN107073390A/zh active Pending
- 2015-07-23 EP EP15759631.3A patent/EP3177385A1/de not_active Withdrawn
-
2017
- 2017-02-06 SA SA517380846A patent/SA517380846B1/ar unknown
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EP1024187A1 (de) * | 1999-01-29 | 2000-08-02 | Linde Aktiengesellschaft | Verfahren zum Gewinnen einer Ethylen-reichen Fraktion |
US6428606B1 (en) * | 2001-03-26 | 2002-08-06 | Membrane Technology And Research, Inc. | Membrane gas separation process with compressor interstage recycle |
EP1302478A1 (de) * | 2001-10-12 | 2003-04-16 | Air Products And Chemicals, Inc. | Rückgewinnung von Olefinen |
US6706857B2 (en) | 2001-10-12 | 2004-03-16 | Air Products And Chemicals, Inc. | Recovery of olefin monomers |
EP1491559A1 (de) | 2002-03-29 | 2004-12-29 | Mitsui Chemicals, Inc. | Verfahren zur rückführung von abgas in einer polymerproduktionsanlage |
WO2015160645A1 (en) * | 2014-04-16 | 2015-10-22 | Saudi Arabian Oil Company | Improved sulfur recovery process for treating low to medium mole percent hydrogen sulfide gas feeds with btex in a claus unit |
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See also references of EP3177385A1 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018111535A1 (en) * | 2016-12-15 | 2018-06-21 | Chevron Phillips Chemical Company Lp | Membrane and pressure swing adsorption hybrid inru process |
US10449480B2 (en) | 2016-12-15 | 2019-10-22 | Chevron Phillips Chemical Company Lp | Membrane and pressure swing adsorption hybrid INRU process |
RU2750076C2 (ru) * | 2016-12-15 | 2021-06-21 | ШЕВРОН ФИЛЛИПС КЕМИКАЛ КОМПАНИ ЭлПи | Сочетание мембранного способа и адсорбции с переменным давлением в установке получения изобутана и азота |
US11058987B2 (en) | 2016-12-15 | 2021-07-13 | Chevron Phillips Chemical Company Lp | Membrane and pressure swing adsorption hybrid INRU process |
Also Published As
Publication number | Publication date |
---|---|
RU2017107200A (ru) | 2018-09-07 |
CN107073390A (zh) | 2017-08-18 |
EP3177385A1 (de) | 2017-06-14 |
US20170209830A1 (en) | 2017-07-27 |
MY179140A (en) | 2020-10-28 |
SA517380846B1 (ar) | 2020-12-22 |
RU2687951C2 (ru) | 2019-05-16 |
US10092876B2 (en) | 2018-10-09 |
RU2017107200A3 (de) | 2018-12-19 |
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