PT99203A - Processo para a secagem de ar ou a purificacao de outros gases mediante utilizacao de membranas permeaveis e sistema de membrana para a sua realizacao - Google Patents
Processo para a secagem de ar ou a purificacao de outros gases mediante utilizacao de membranas permeaveis e sistema de membrana para a sua realizacao Download PDFInfo
- Publication number
- PT99203A PT99203A PT99203A PT9920391A PT99203A PT 99203 A PT99203 A PT 99203A PT 99203 A PT99203 A PT 99203A PT 9920391 A PT9920391 A PT 9920391A PT 99203 A PT99203 A PT 99203A
- Authority
- PT
- Portugal
- Prior art keywords
- membrane
- gas
- substrate
- impurity
- membrane system
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims description 275
- 239000007789 gas Substances 0.000 title claims description 191
- 238000000034 method Methods 0.000 title claims description 29
- 238000007605 air drying Methods 0.000 title claims description 19
- 238000000746 purification Methods 0.000 title claims description 18
- 230000008569 process Effects 0.000 title claims description 17
- 239000012510 hollow fiber Substances 0.000 claims description 84
- 238000000926 separation method Methods 0.000 claims description 72
- 238000010926 purge Methods 0.000 claims description 65
- 239000000758 substrate Substances 0.000 claims description 59
- 239000012466 permeate Substances 0.000 claims description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000002131 composite material Substances 0.000 claims description 35
- 238000001035 drying Methods 0.000 claims description 35
- 239000000047 product Substances 0.000 claims description 31
- 239000012535 impurity Substances 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 238000004140 cleaning Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 229920002492 poly(sulfone) Polymers 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 3
- 239000003380 propellant Substances 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 24
- 230000035699 permeability Effects 0.000 description 16
- 230000010287 polarization Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000013178 mathematical model Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000013459 approach Methods 0.000 description 6
- 239000001856 Ethyl cellulose Substances 0.000 description 5
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229920001249 ethyl cellulose Polymers 0.000 description 5
- 235000019325 ethyl cellulose Nutrition 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 5
- 238000010981 drying operation Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011027 product recovery Methods 0.000 description 3
- 238000011403 purification operation Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229940110728 nitrogen / oxygen Drugs 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000131 polyvinylidene Polymers 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004540 pour-on Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000010792 warming Methods 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
- B01D53/26—Drying gases or vapours
- B01D53/268—Drying gases or vapours 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
- B01D53/22—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
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 Using Semi-Permeable Membranes (AREA)
- Drying Of Gases (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/596,098 US5084073A (en) | 1990-10-11 | 1990-10-11 | Membrane drying process and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT99203A true PT99203A (pt) | 1993-11-30 |
Family
ID=24385978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT99203A PT99203A (pt) | 1990-10-11 | 1991-10-10 | Processo para a secagem de ar ou a purificacao de outros gases mediante utilizacao de membranas permeaveis e sistema de membrana para a sua realizacao |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5084073A (https=) |
| EP (1) | EP0481363A1 (https=) |
| JP (1) | JPH04265111A (https=) |
| KR (1) | KR960004609B1 (https=) |
| CN (1) | CN1031621C (https=) |
| BR (1) | BR9104302A (https=) |
| CA (1) | CA2053189A1 (https=) |
| MX (1) | MX9101532A (https=) |
| PT (1) | PT99203A (https=) |
| TW (1) | TW201703B (https=) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3616828B2 (ja) * | 1991-03-06 | 2005-02-02 | ステラケミファ株式会社 | 希フッ化水素酸の供給方法及びこの方法に使用する希フッ化水素酸供給装置 |
| US5236474A (en) * | 1991-09-13 | 1993-08-17 | Bend Research, Inc. | Membrane-based removal of condensable vapors |
| SE502780C2 (sv) * | 1991-09-25 | 1996-01-08 | Siemens Elema Ab | Avfuktningsanordning |
| US5226932A (en) * | 1991-10-07 | 1993-07-13 | Praxair Technology, Inc. | Enhanced meambrane gas separations |
| US5185014A (en) * | 1991-11-05 | 1993-02-09 | Praxair Technology, Inc. | Membrane oxygen process and system |
| US5221388A (en) * | 1991-11-07 | 1993-06-22 | Hoechst Celanese Corp. | Selective sealing of defective gas separation hollow fibers |
| US5169412A (en) * | 1991-11-20 | 1992-12-08 | Praxair Technology Inc. | Membrane air drying and separation operations |
| US5205842A (en) * | 1992-02-13 | 1993-04-27 | Praxair Technology, Inc. | Two stage membrane dryer |
| US5259869A (en) * | 1992-05-06 | 1993-11-09 | Permea, Inc. | Use of membrane separation to dry gas streams containing water vapor |
| NL9201226A (nl) * | 1992-07-08 | 1994-02-01 | Tno | Werkwijze en inrichting voor het reguleren van de vochtigheid van een gasstroom en het tegelijkertijd zuiveren daarvan van ongewenste zure of basische gassen. |
| TW314512B (https=) * | 1993-09-20 | 1997-09-01 | Shell Int Research | |
| US5383956A (en) * | 1993-10-12 | 1995-01-24 | Praxair Technology, Inc. | Start-up and shut down processes for membrane systems and membrane systems useful for the same |
| AU690723B2 (en) * | 1994-09-14 | 1998-04-30 | Bend Research, Inc. | Organic and inorganic vapor permeation by countercurrent condensable sweep |
| US5641337A (en) * | 1995-12-08 | 1997-06-24 | Permea, Inc. | Process for the dehydration of a gas |
| US5700310A (en) | 1995-12-29 | 1997-12-23 | Mg Generon, Inc. | Removal of oil from compressed gas with macroporous polymeric adsorbent |
| DE19603420C1 (de) * | 1996-01-31 | 1997-05-22 | Geesthacht Gkss Forschung | Kompositmembran aus einer insbesondere mikroporösen Trägermembran |
| US6059857A (en) * | 1996-08-14 | 2000-05-09 | Bend Research, Inc. | Ultrapurification of organic solvents |
| EP0824034A3 (en) * | 1996-08-14 | 1998-05-06 | Bend Research, Inc. | Vapor permeation system |
| US5961692A (en) * | 1997-01-30 | 1999-10-05 | Howell Laboratories, Inc. | System and method of improving performance of a gas membrane dehydrator |
| EP0860194A1 (en) * | 1997-02-21 | 1998-08-26 | Aquilo Gas Separation B.V. | A process for drying compressed air |
| DE19722731A1 (de) * | 1997-04-10 | 1998-10-15 | Beko Kondensat Technik Gmbh | Trocknungsvorrichtung für Druckluft |
| US6117210A (en) * | 1997-04-29 | 2000-09-12 | Praxair Technology, Inc. | Solid electrolyte systems for producing controlled purity oxygen |
| US5837034A (en) * | 1997-06-23 | 1998-11-17 | Praxair Technology, Inc. | Process for reducing carbon production in solid electrolyte ionic conductor systems |
| US5944874A (en) * | 1997-06-23 | 1999-08-31 | Praxair Technology, Inc. | Solid electrolyte ionic conductor systems for the production of high purity nitrogen |
| US5851266A (en) * | 1997-06-23 | 1998-12-22 | Praxair Technology,Inc. | Hybrid solid electrolyte ionic conductor systems for purifying inert gases |
| US6106591A (en) * | 1997-06-23 | 2000-08-22 | Praxair Technology, Inc. | Process for reducing carbon production in solid electrolyte ionic conductor systems |
| DE19739144C2 (de) * | 1997-09-06 | 2002-04-18 | Geesthacht Gkss Forschung | Vorrichtung zur Entfernung von Wasserdampf aus unter Druck befindlichen Gasen oder Gasgemischen |
| US5928409A (en) * | 1997-11-12 | 1999-07-27 | New Jersey Institute Of Technology | Method and apparatus for gas removal by cyclic flow swing membrane permeation |
| JP3876561B2 (ja) * | 1999-03-15 | 2007-01-31 | 宇部興産株式会社 | ガス分離膜モジュールおよびガス分離方法 |
| WO2001034280A1 (en) * | 1999-11-12 | 2001-05-17 | Porous Media Corporation | Compressed gas systems utilizing a variable pressure membrane air drier, and method of operation thereof |
| DE60127734T2 (de) * | 2000-01-19 | 2007-12-27 | Ube Industries, Ltd., Ube | Gastrennungsmembran und seine Verwendung |
| US6478852B1 (en) * | 2000-02-18 | 2002-11-12 | Cms Technology Holdings, Inc. | Method of producing nitrogen enriched air |
| JP2001239125A (ja) * | 2000-03-01 | 2001-09-04 | Nabco Ltd | 中空糸膜式除湿装置 |
| US6641643B2 (en) * | 2000-10-10 | 2003-11-04 | Generon Igs Inc. | Ceramic deoxygenation hybrid systems for the production of oxygen and nitrogen gases |
| US6764529B2 (en) * | 2002-07-01 | 2004-07-20 | Bendix Commercial Vehicle Systems Llc | Membrane gas dehydrating apparatus for gas controlled and powered systems |
| MXPA05003145A (es) * | 2002-09-25 | 2005-06-22 | Exxonmobil Upstream Res Co | Metodo y sistema para separar un componente de gas multi-componente. |
| US6881245B2 (en) * | 2002-10-18 | 2005-04-19 | Bendix Commercial Vehicle Systems Llc | Membrane air dryer and method of mounting a membrane dryer to a vehicle |
| US6923845B2 (en) * | 2002-10-18 | 2005-08-02 | Bendix Commercial Vehicle Systems Llc | Membrane air dryer for vehicle air brake system |
| US6719824B1 (en) * | 2003-01-24 | 2004-04-13 | Cms Technology Holdings, Inc. | Cyclic membrane separation process |
| US6887300B2 (en) * | 2003-01-24 | 2005-05-03 | Cms Technology Holdings, Inc. | Cyclic membrane separation process |
| DE112004000175T5 (de) * | 2003-01-24 | 2006-01-26 | Cms Technology Holdings Inc., Newport | Zyklisches Membrantrennverfahren |
| US7753991B2 (en) * | 2004-07-30 | 2010-07-13 | Kertzman Systems, Inc. | Water transport method and assembly including a thin film membrane for the addition or removal of water from gases or liquids |
| US7435284B2 (en) * | 2005-11-17 | 2008-10-14 | Thermo Electron Corporation | Parallel-plate diffusion gas dehumidifier and methods for use |
| US8673510B2 (en) * | 2010-10-11 | 2014-03-18 | Dcns Sa | Systems and methods for maintaining hydrogen-selective membranes during periods of inactivity |
| JP6738835B2 (ja) | 2015-06-09 | 2020-08-12 | エボニック ファイバース ゲゼルシャフト ミット ベシュレンクテル ハフツングＥｖｏｎｉｋ Ｆｉｂｒｅｓ ＧｍｂＨ | 流体の分離のための新規なカートリッジおよびモジュール |
| US12121864B2 (en) | 2015-07-30 | 2024-10-22 | Evonik Operations Gmbh | Flexibly adaptable membrane cartridges for the separation of fluids |
| JP2017056456A (ja) * | 2015-09-16 | 2017-03-23 | 株式会社東芝 | 水蒸気分離体とそれを用いた除湿装置 |
| US20230234170A1 (en) * | 2020-06-03 | 2023-07-27 | Fanuc Corporation | Laser device |
| US11618676B2 (en) | 2020-10-23 | 2023-04-04 | H2 Powertech, Llc | Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ |
| CN118119440A (zh) | 2021-08-03 | 2024-05-31 | 赢创运营有限公司 | 用于同时处理不同波动气流的装置和方法 |
| US12283727B2 (en) | 2022-08-16 | 2025-04-22 | H2 Powertech, Llc | Hydrogen-producing fuel cell systems and methods of operating the same |
| CN120882471A (zh) | 2023-01-27 | 2025-10-31 | 赢创运营有限公司 | 用于同时处理甲烷化领域中的不同波动气体料流的装置和方法 |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3339341A (en) * | 1965-12-22 | 1967-09-05 | Du Pont | Fluid separation process and apparatus |
| US3624983A (en) * | 1970-03-02 | 1971-12-07 | Gen Electric | Means for rapid and uniform heating of a packaged membrane system |
| US3735558A (en) * | 1971-06-29 | 1973-05-29 | Perma Pure Process Inc | Process for separating fluids and apparatus |
| US3735559A (en) * | 1972-02-02 | 1973-05-29 | Gen Electric | Sulfonated polyxylylene oxide as a permselective membrane for water vapor transport |
| JPS5413653A (en) * | 1977-07-04 | 1979-02-01 | Teijin Ltd | Air dehumidifying method |
| JPS5415349A (en) * | 1977-07-05 | 1979-02-05 | Teijin Ltd | Method of dehumidifying air |
| US4631128A (en) * | 1978-09-19 | 1986-12-23 | Albany International Corporation | Permselective hollow fiber bundle |
| FR2540396B1 (fr) * | 1983-02-04 | 1988-09-23 | Petroles Cie Francaise | Procede de deshydratation de gaz |
| DE3650465T2 (de) * | 1985-02-09 | 1996-09-12 | Asahi Chemical Ind | Durchlässige Polymer-Membran für die Gastrocknung |
| JPS61187918A (ja) * | 1985-02-18 | 1986-08-21 | Asahi Chem Ind Co Ltd | ドライ・エツチング方法 |
| ZA865173B (en) * | 1985-07-31 | 1987-03-25 | Celanese Corp | Immobilized liquid membrane |
| EG18145A (en) * | 1985-12-10 | 1992-08-30 | Albany Int Corp | Hollow fiber separatory modul with encased fiber bundle |
| JPH0751757B2 (ja) * | 1986-02-18 | 1995-06-05 | 旭化成工業株式会社 | ドライ・エツチング方法 |
| JPS62241527A (ja) * | 1986-04-14 | 1987-10-22 | Daicel Chem Ind Ltd | 空気の除湿方法 |
| EP0263212B1 (en) * | 1986-10-08 | 1990-12-27 | Ube Industries, Ltd. | Method for removing water vapor from water vapor-containing gas |
| JPH01143624A (ja) * | 1987-11-27 | 1989-06-06 | Ube Ind Ltd | 計装用又は駆動装置用のガスの脱湿方法 |
| US4783201A (en) * | 1987-12-28 | 1988-11-08 | Rice Arthur W | Gas dehydration membrane apparatus |
| JPH01194927A (ja) * | 1988-01-27 | 1989-08-04 | Japan Gore Tex Inc | 水蒸気選択透過膜 |
| JPH01224029A (ja) * | 1988-03-04 | 1989-09-07 | Ube Ind Ltd | ガスの脱湿方法 |
| JPH01249123A (ja) * | 1988-03-31 | 1989-10-04 | Asahi Glass Co Ltd | 除湿方法 |
| US4881955A (en) * | 1988-09-12 | 1989-11-21 | Union Carbide Corporation | Method for gas separation using helically wound hollow fibers permeable membrane cartridge |
| US4894068A (en) * | 1988-12-27 | 1990-01-16 | Permea, Inc. | Process for capturing nitrogen from air using gas separation membranes |
| US4934148A (en) * | 1989-05-12 | 1990-06-19 | Union Carbide Corporation | Dry, high purity nitrogen production process and system |
| US4931070A (en) * | 1989-05-12 | 1990-06-05 | Union Carbide Corporation | Process and system for the production of dry, high purity nitrogen |
| US4961759A (en) * | 1989-08-17 | 1990-10-09 | Separation Dynamics, Inc. | Closed loop gas dehydration process and apparatus |
| US5002590A (en) * | 1989-09-19 | 1991-03-26 | Bend Research, Inc. | Countercurrent dehydration by hollow fibers |
-
1990
- 1990-10-11 US US07/596,098 patent/US5084073A/en not_active Expired - Fee Related
-
1991
- 1991-10-04 BR BR919104302A patent/BR9104302A/pt unknown
- 1991-10-10 MX MX9101532A patent/MX9101532A/es unknown
- 1991-10-10 KR KR1019910017796A patent/KR960004609B1/ko not_active Expired - Lifetime
- 1991-10-10 CN CN91109626A patent/CN1031621C/zh not_active Expired - Fee Related
- 1991-10-10 CA CA002053189A patent/CA2053189A1/en not_active Abandoned
- 1991-10-10 EP EP91117310A patent/EP0481363A1/en not_active Ceased
- 1991-10-10 PT PT99203A patent/PT99203A/pt not_active Application Discontinuation
- 1991-10-11 JP JP3290357A patent/JPH04265111A/ja active Pending
- 1991-10-18 TW TW080108230A patent/TW201703B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1031621C (zh) | 1996-04-24 |
| KR920007672A (ko) | 1992-05-27 |
| TW201703B (https=) | 1993-03-11 |
| CA2053189A1 (en) | 1992-04-12 |
| JPH04265111A (ja) | 1992-09-21 |
| KR960004609B1 (ko) | 1996-04-09 |
| BR9104302A (pt) | 1992-06-09 |
| MX9101532A (es) | 1992-06-05 |
| US5084073A (en) | 1992-01-28 |
| EP0481363A1 (en) | 1992-04-22 |
| CN1060417A (zh) | 1992-04-22 |
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