CA2043491C - Air separation pressure swing adsorption process - Google Patents
Air separation pressure swing adsorption processInfo
- Publication number
- CA2043491C CA2043491C CA002043491A CA2043491A CA2043491C CA 2043491 C CA2043491 C CA 2043491C CA 002043491 A CA002043491 A CA 002043491A CA 2043491 A CA2043491 A CA 2043491A CA 2043491 C CA2043491 C CA 2043491C
- Authority
- CA
- Canada
- Prior art keywords
- pressure
- adsorbent
- adsorption
- sio2
- desorption
- 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.)
- Expired - Lifetime
Links
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 64
- 238000000926 separation method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 69
- 230000008569 process Effects 0.000 title claims description 69
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 137
- 239000003463 adsorbent Substances 0.000 claims abstract description 86
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 69
- 238000003795 desorption Methods 0.000 claims abstract description 42
- 238000002336 sorption--desorption measurement Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 32
- 229910021536 Zeolite Inorganic materials 0.000 claims description 28
- 239000010457 zeolite Substances 0.000 claims description 28
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 27
- 229910052744 lithium Inorganic materials 0.000 claims description 25
- 229910052681 coesite Inorganic materials 0.000 claims description 17
- 229910052906 cristobalite Inorganic materials 0.000 claims description 17
- 239000000377 silicon dioxide Substances 0.000 claims description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims description 17
- 229910052682 stishovite Inorganic materials 0.000 claims description 17
- 229910052905 tridymite Inorganic materials 0.000 claims description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 15
- 239000003518 caustics Substances 0.000 claims description 15
- -1 lithium cations Chemical class 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 230000029087 digestion Effects 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 229910001415 sodium ion Inorganic materials 0.000 claims description 6
- 230000006872 improvement Effects 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 5
- 229910052593 corundum Inorganic materials 0.000 claims 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 5
- 238000012545 processing Methods 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000010926 purge Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 238000011068 loading method Methods 0.000 description 8
- 238000011084 recovery Methods 0.000 description 8
- 150000001768 cations Chemical class 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000004927 clay Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000002808 molecular sieve Substances 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000274 adsorptive effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000012993 chemical processing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 208000001836 Firesetting Behavior Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910001427 strontium ion Inorganic materials 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B01D53/02—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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
- B01D2253/1085—Zeolites characterized by a silicon-aluminium ratio
-
- 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
- B01D2256/12—Oxygen
-
- 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
- B01D2256/18—Noble gases
-
- 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
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S95/00—Gas separation: processes
- Y10S95/90—Solid sorbent
- Y10S95/902—Molecular sieve
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7-530,285 | 1990-05-30 | ||
| US07/530,285 US5074892A (en) | 1990-05-30 | 1990-05-30 | Air separation pressure swing adsorption process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2043491A1 CA2043491A1 (en) | 1991-12-01 |
| CA2043491C true CA2043491C (en) | 1998-10-27 |
Family
ID=24113099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002043491A Expired - Lifetime CA2043491C (en) | 1990-05-30 | 1991-05-29 | Air separation pressure swing adsorption process |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5074892A (OSRAM) |
| EP (1) | EP0461478B1 (OSRAM) |
| JP (1) | JPH0794004B2 (OSRAM) |
| KR (1) | KR960000007B1 (OSRAM) |
| CN (1) | CN1029821C (OSRAM) |
| AT (1) | ATE118698T1 (OSRAM) |
| BR (1) | BR9102180A (OSRAM) |
| CA (1) | CA2043491C (OSRAM) |
| DE (1) | DE69107516T2 (OSRAM) |
| DK (1) | DK0461478T3 (OSRAM) |
| ES (1) | ES2068426T3 (OSRAM) |
| GR (1) | GR3015165T3 (OSRAM) |
| TW (1) | TW218850B (OSRAM) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174979A (en) * | 1989-10-06 | 1992-12-29 | Uop | Mixed ion-exchanged zeolites and processes for the use thereof in gas separations |
| US5152813A (en) * | 1991-12-20 | 1992-10-06 | Air Products And Chemicals, Inc. | Nitrogen adsorption with a Ca and/or Sr exchanged lithium X-zeolite |
| AU5135593A (en) * | 1992-09-22 | 1994-04-12 | Arbor Research Corporation | System for separation of oxygen from argon/oxygen mixture |
| US5258060A (en) † | 1992-09-23 | 1993-11-02 | Air Products And Chemicals, Inc. | Adsorptive separation using diluted adsorptive phase |
| US5266102A (en) * | 1992-09-23 | 1993-11-30 | Air Products And Chemicals, Inc. | O2 VSA process with low O2 capacity adsorbents |
| US5415683A (en) * | 1993-11-17 | 1995-05-16 | Praxair Technology, Inc. | Vacuum pressure swing adsorption process |
| US5464467A (en) * | 1994-02-14 | 1995-11-07 | The Boc Group, Inc. | Adsorptive separation of nitrogen from other gases |
| FR2722426B1 (fr) * | 1994-07-18 | 1996-08-23 | Air Liquide | Procede de separation d'azote d'un melange gazeux par adsorption |
| DE19528188C1 (de) * | 1995-08-01 | 1996-12-05 | Bayer Ag | Verfahren zur Adsorption von Stickstoff aus Gasgemischen mittels Druckwechseladsorption mit Zeolithen |
| US5674311A (en) * | 1995-10-20 | 1997-10-07 | Praxair Technology, Inc. | Adsorption process and system using multilayer adsorbent beds |
| FR2743507B1 (fr) | 1996-01-16 | 1998-03-06 | Air Liquide | Procede pour la separation de melanges d'oxygene et d'azote utilisant un adsorbant a porosite amelioree |
| FR2764681B1 (fr) * | 1997-06-13 | 1999-07-16 | Air Liquide | Procede et installation de separation d'air par distillation cryogenique |
| JPH119990A (ja) | 1997-06-24 | 1999-01-19 | Daido Hoxan Inc | 窒素吸着剤およびその使用方法 |
| FR2766476B1 (fr) * | 1997-07-22 | 1999-09-03 | Ceca Sa | Adsorbant zeolitique ameliore pour la separation des gaz de l'air et son procede d'obtention |
| CA2321552A1 (en) | 1998-02-27 | 1999-09-02 | Praxair Technology, Inc. | Vpsa process using improved adsorbent materials |
| US6500234B1 (en) | 1998-02-27 | 2002-12-31 | Praxair Technology, Inc. | Rate-enhanced gas separation |
| BR9908266A (pt) | 1998-02-27 | 2000-10-31 | Praxair Technology Inc | Processo e sitema de adsorção com oscilação de pressão |
| EP1059997A4 (en) * | 1998-02-27 | 2006-01-11 | Praxair Technology Inc | HIGH PERFORMANCE ADSORBENT FOR PRESSURE MODIFIED ADSORPTION |
| US6171370B1 (en) | 1998-03-04 | 2001-01-09 | Tosoh Corporation | Adsorbent for separating gases |
| US6780806B1 (en) | 1998-12-30 | 2004-08-24 | The Regents Of The University Of Michigan | Lithium-based zeolites containing silver and copper and use thereof for selective absorption |
| US6651658B1 (en) | 2000-08-03 | 2003-11-25 | Sequal Technologies, Inc. | Portable oxygen concentration system and method of using the same |
| US6691702B2 (en) | 2000-08-03 | 2004-02-17 | Sequal Technologies, Inc. | Portable oxygen concentration system and method of using the same |
| CA2430271A1 (en) * | 2000-12-08 | 2002-06-13 | Questair Technologies Inc. | Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source |
| US6468328B2 (en) * | 2000-12-18 | 2002-10-22 | Air Products And Chemicals, Inc. | Oxygen production by adsorption |
| US6506236B2 (en) † | 2001-03-28 | 2003-01-14 | Air Products And Chemicals, Inc. | Process for reducing the level of carbon dioxide in a gaseous mixture |
| US6471744B1 (en) | 2001-08-16 | 2002-10-29 | Sequal Technologies, Inc. | Vacuum-pressure swing absorption fractionator and method of using the same |
| FR2848983B1 (fr) | 2002-12-18 | 2005-01-28 | Air Liquide | Procede de fourniture a des occupants d'un aeronef d'un melange gazeux riche en oxygene |
| US7105038B2 (en) * | 2003-02-18 | 2006-09-12 | Jej Co., Ltd. | Gas concentration method and its apparatus |
| US7713334B1 (en) * | 2006-10-27 | 2010-05-11 | The United States Of America As Represented By The Secretary Of The Army | Process for removing epoxides |
| US8226745B2 (en) * | 2009-04-28 | 2012-07-24 | Lehigh University | Miniature oxygen concentrators and methods |
| SG192603A1 (en) | 2011-03-01 | 2013-09-30 | Exxonmobil Res & Eng Co | Temperature swing adsorption process for the separation of target species from a gas mixture |
| US8808426B2 (en) | 2012-09-04 | 2014-08-19 | Exxonmobil Research And Engineering Company | Increasing scales, capacities, and/or efficiencies in swing adsorption processes with hydrocarbon gas feeds |
| US9649589B2 (en) | 2013-02-21 | 2017-05-16 | Lehigh University | Oxygen concentrator system and method |
| WO2018026517A1 (en) | 2016-08-04 | 2018-02-08 | Exxonmobil Research And Engineering Company | Increasing scales, capacities, and/or efficiencies in swing adsorption processes with hydrocarbon gas feeds |
| CA3157459C (en) * | 2019-11-15 | 2024-02-06 | Andrew C. Rosinski | Energy efficient vesa process with direct drive high speed centrifugal compressors |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3140933A (en) * | 1960-12-02 | 1964-07-14 | Union Carbide Corp | Separation of an oxygen-nitrogen mixture |
| NL291467A (OSRAM) * | 1962-04-12 | 1900-01-01 | ||
| US3280536A (en) * | 1963-07-30 | 1966-10-25 | Exxon Research Engineering Co | Method for providing an oxygen-enriched environment |
| US3313091A (en) * | 1963-11-04 | 1967-04-11 | Exxon Research Engineering Co | Vacuum cycle adsorption |
| GB1449864A (en) * | 1973-10-24 | 1976-09-15 | Boc International Ltd | Adsorption system |
| GB1529701A (en) * | 1975-01-02 | 1978-10-25 | Boc International Ltd | Oxygen enriched air |
| GB1559325A (en) * | 1976-02-27 | 1980-01-16 | Boc Ltd | Gas separation |
| JPS52152893A (en) * | 1976-06-15 | 1977-12-19 | Toray Ind Inc | Separation and recovery of nitrogen |
| DE3144012A1 (de) * | 1981-11-05 | 1983-05-19 | Bayer Ag, 5090 Leverkusen | Druckwechselverfahren zur trennung von gasgemischen mittels adsorption |
| US4477265A (en) * | 1982-08-05 | 1984-10-16 | Air Products And Chemicals, Inc. | Argon purification |
| US4539019A (en) * | 1983-09-29 | 1985-09-03 | Air Products & Chemicals, Inc. | Control system for air fractionation by selective adsorption |
| DE3413895A1 (de) * | 1984-04-13 | 1985-10-17 | Bayer Ag, 5090 Leverkusen | Druckwechselverfahren zur adsorptiven trennung von gasgemischen |
| GB8503712D0 (en) * | 1985-02-13 | 1985-03-13 | British Petroleum Co Plc | Selective adsorption process |
| JPS61266302A (ja) * | 1985-05-17 | 1986-11-26 | Seitetsu Kagaku Co Ltd | 濃縮酸素回収方法 |
| US4859217A (en) * | 1987-06-30 | 1989-08-22 | Uop | Process for separating nitrogen from mixtures thereof with less polar substances |
| US4813977A (en) * | 1987-12-29 | 1989-03-21 | Air Products And Chemicals, Inc. | Adsorptive nitrogen generation utilizing multiple adsorption beds |
| US4892565A (en) * | 1987-12-29 | 1990-01-09 | Air Products And Chemicals, Inc. | Adsorptive separation utilizing multiple adsorption beds |
| US4810265A (en) * | 1987-12-29 | 1989-03-07 | Union Carbide Corporation | Pressure swing adsorption process for gas separation |
| JP2683806B2 (ja) * | 1988-03-17 | 1997-12-03 | 住友精化株式会社 | 濃縮酸素回収方法 |
| US4857083A (en) * | 1988-10-25 | 1989-08-15 | Air Products And Chemicals, Inc. | Vacuum swing adsorption process with vacuum aided internal rinse |
| US4925460A (en) * | 1989-07-20 | 1990-05-15 | Air Products And Chemicals, Inc. | Chabazite for gas separation |
-
1990
- 1990-05-30 US US07/530,285 patent/US5074892A/en not_active Expired - Lifetime
-
1991
- 1991-05-28 BR BR919102180A patent/BR9102180A/pt not_active IP Right Cessation
- 1991-05-29 AT AT91108835T patent/ATE118698T1/de not_active IP Right Cessation
- 1991-05-29 EP EP91108835A patent/EP0461478B1/en not_active Revoked
- 1991-05-29 CN CN91104555A patent/CN1029821C/zh not_active Revoked
- 1991-05-29 DE DE69107516T patent/DE69107516T2/de not_active Revoked
- 1991-05-29 JP JP3152232A patent/JPH0794004B2/ja not_active Expired - Lifetime
- 1991-05-29 KR KR1019910008766A patent/KR960000007B1/ko not_active Expired - Fee Related
- 1991-05-29 DK DK91108835.9T patent/DK0461478T3/da active
- 1991-05-29 CA CA002043491A patent/CA2043491C/en not_active Expired - Lifetime
- 1991-05-29 ES ES91108835T patent/ES2068426T3/es not_active Expired - Lifetime
- 1991-06-26 TW TW080104938A patent/TW218850B/zh not_active IP Right Cessation
-
1995
- 1995-02-23 GR GR950400326T patent/GR3015165T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TW218850B (OSRAM) | 1994-01-11 |
| GR3015165T3 (en) | 1995-05-31 |
| ATE118698T1 (de) | 1995-03-15 |
| KR910019666A (ko) | 1991-12-19 |
| CN1029821C (zh) | 1995-09-27 |
| JPH0794004B2 (ja) | 1995-10-11 |
| CN1058920A (zh) | 1992-02-26 |
| ES2068426T3 (es) | 1995-04-16 |
| JPH04227814A (ja) | 1992-08-17 |
| EP0461478B1 (en) | 1995-02-22 |
| US5074892A (en) | 1991-12-24 |
| DK0461478T3 (da) | 1995-07-24 |
| KR960000007B1 (ko) | 1996-01-03 |
| DE69107516D1 (de) | 1995-03-30 |
| CA2043491A1 (en) | 1991-12-01 |
| BR9102180A (pt) | 1991-12-24 |
| EP0461478A1 (en) | 1991-12-18 |
| DE69107516T2 (de) | 1995-09-14 |
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