ES2194269T3 - Procedimiento psa que utiliza evacuacion simultanea de cabeza y cola del lecho absorbente. - Google Patents
Procedimiento psa que utiliza evacuacion simultanea de cabeza y cola del lecho absorbente.Info
- Publication number
- ES2194269T3 ES2194269T3 ES98123255T ES98123255T ES2194269T3 ES 2194269 T3 ES2194269 T3 ES 2194269T3 ES 98123255 T ES98123255 T ES 98123255T ES 98123255 T ES98123255 T ES 98123255T ES 2194269 T3 ES2194269 T3 ES 2194269T3
- Authority
- ES
- Spain
- Prior art keywords
- evacuation
- gas
- recovery
- simultaneous
- waste
- 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
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
- B01D53/047—Pressure swing adsorption
-
- 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
- B01D53/0476—Vacuum 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
- B01D2253/104—Alumina
-
- 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
- B01D2256/10—Nitrogen
-
- 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
- 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
- B01D2257/104—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40013—Pressurization
- B01D2259/40016—Pressurization with three sub-steps
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40028—Depressurization
- B01D2259/40032—Depressurization with three sub-steps
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40028—Depressurization
- B01D2259/40033—Depressurization with more than three sub-steps
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40043—Purging
- B01D2259/40045—Purging with two sub-steps
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40043—Purging
- B01D2259/4005—Nature of purge gas
- B01D2259/40052—Recycled product or process gas
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40043—Purging
- B01D2259/4005—Nature of purge gas
- B01D2259/40056—Gases other than recycled product or process gas
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
- B01D2259/40069—Eight
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
- B01D2259/40073—Ten
-
- 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
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40077—Direction of flow
- B01D2259/40081—Counter-current
-
- 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
-
- 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
- B01D53/0473—Rapid pressure swing adsorption
-
- 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
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
LA PRESENTE INVENCION SE REFIERE A LA RECUPERACION DE GAS DE OXIGENO DE BAJA PUREZA, DE LA PARTE SUPERIOR DE UNA CAMARA ADSORBEDORA, AL INTERIOR DE UN TANQUE RECEPTOR QUE SE UTILIZA COMO GAS DE PURGA EN REFLUJO. LA RECUPERACION DEL GAS INSERVIBLE TIENE POR RESULTADO UNA EFICIENCIA MEJORADA DEL PROCEDIMIENTO. LA INVENCION PUEDE EMPLEAR TAMBIEN UNA EVACUACION SIMULTANEA DESDE LA PARTE SUPERIOR DEL ADSORBEDOR, PARA EXTRAER EL GAS INSERVIBLE DE BAJA PUREZA, MIENTRAS SE LLEVA A CABO LA ETAPA PRINCIPAL DE EVACUACION DE RESIDUOS. ESTA RECUPERACION SIMULTANEA DEL GAS INSERVIBLE A FAVOR DE CORRIENTE DE LA PARTE SUPERIOR, Y DE LA EVACUACION A CONTRACORRIENTE DE RESIDUOS, DESDE AMBOS EXTREMOS DEL ADSORBEDOR, PERMITE UN AUMENTO GENERAL EN LA RECUPERACION DEL PRODUCTO DEL 3-5%, RESPECTO A PROCEDIMIENTOS CONVENCIONALES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/987,790 US6048384A (en) | 1997-12-09 | 1997-12-09 | PSA process and system using simultaneous top and bottom evacuation of absorbent bed |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2194269T3 true ES2194269T3 (es) | 2003-11-16 |
Family
ID=25533564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98123255T Expired - Lifetime ES2194269T3 (es) | 1997-12-09 | 1998-12-07 | Procedimiento psa que utiliza evacuacion simultanea de cabeza y cola del lecho absorbente. |
Country Status (10)
Country | Link |
---|---|
US (1) | US6048384A (es) |
EP (1) | EP0922481B1 (es) |
JP (1) | JP3464766B2 (es) |
KR (1) | KR100436111B1 (es) |
CN (1) | CN1195571C (es) |
BR (1) | BR9805203A (es) |
CA (1) | CA2255526C (es) |
DE (1) | DE69815031T2 (es) |
ES (1) | ES2194269T3 (es) |
ID (1) | ID22096A (es) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6245127B1 (en) * | 1999-05-27 | 2001-06-12 | Praxair Technology, Inc. | Pressure swing adsorption process and apparatus |
US6503299B2 (en) * | 1999-11-03 | 2003-01-07 | Praxair Technology, Inc. | Pressure swing adsorption process for the production of hydrogen |
US6558451B2 (en) * | 2000-05-10 | 2003-05-06 | Airsep Corporation | Multiple bed pressure swing adsorption method and apparatus |
US6524370B2 (en) * | 2000-07-28 | 2003-02-25 | The Boc Group, Inc. | Oxygen production |
ES2640910T3 (es) * | 2000-10-27 | 2017-11-07 | Air Products And Chemicals, Inc. | Sistemas y procesos para proporcionar hidrógeno a células de combustible |
US6425938B1 (en) * | 2000-11-01 | 2002-07-30 | Air Products And Chemicals, Inc. | Single bed pressure swing adsorption process |
WO2002049959A1 (fr) * | 2000-12-19 | 2002-06-27 | Sumitomo Seika Chemicals Co., Ltd. | Procede de recuperation d'oxygene gazeux enrichi |
US6471744B1 (en) * | 2001-08-16 | 2002-10-29 | Sequal Technologies, Inc. | Vacuum-pressure swing absorption fractionator and method of using the same |
US6709486B2 (en) * | 2002-04-08 | 2004-03-23 | Air Products And Chemicals, Inc. | Pressure swing adsorption process with controlled internal depressurization flow |
US6641645B1 (en) * | 2002-06-13 | 2003-11-04 | Air Products And Chemicals, Inc. | Vacuum swing adsorption process with controlled waste gas withdrawal |
US7285350B2 (en) * | 2002-09-27 | 2007-10-23 | Questair Technologies Inc. | Enhanced solid oxide fuel cell systems |
US6699307B1 (en) * | 2002-10-11 | 2004-03-02 | H2Gen Innovations, Inc. | High recovery PSA cycles and apparatus with reduced complexity |
US7438746B2 (en) * | 2003-02-25 | 2008-10-21 | Sumitomo Seika Chemicals, Co., Ltd. | Off-gas feed method and target gas purification system |
US7189280B2 (en) * | 2004-06-29 | 2007-03-13 | Questair Technologies Inc. | Adsorptive separation of gas streams |
CN100369652C (zh) * | 2006-02-17 | 2008-02-20 | 成都安普环境技术有限公司 | 用空气为原料制取氧气的方法 |
DE102009022029A1 (de) * | 2009-05-20 | 2010-11-25 | Linde Ag | Aufbau von Flüssigkeitskreisläufen in Gaswäschen |
CN102145246B (zh) * | 2010-02-08 | 2016-05-04 | 杭州盛大高科技机电有限公司 | 制氧机 |
US8545603B2 (en) * | 2010-06-24 | 2013-10-01 | ADSORPTECH Inc. | Method to improve recovery and efficiency of adsorption processes using reversible blowers |
US10118122B2 (en) * | 2011-08-29 | 2018-11-06 | The Boeing Company | CO2 collection methods and systems |
KR101559902B1 (ko) | 2013-08-12 | 2015-10-14 | (주)세프라텍 | 흡착성 투과 폴리머 중공사막을 이용한 가스 흡탈착 분리 시스템 |
US9579598B2 (en) * | 2015-05-15 | 2017-02-28 | Apache Corporation | Pressure swing adsorption process for enhanced separation of lighter from heavier species |
KR101631985B1 (ko) | 2015-06-18 | 2016-06-20 | (주)세프라텍 | 흡착성 투과 중공사막 |
JP6515045B2 (ja) * | 2016-03-09 | 2019-05-15 | エア・ウォーター株式会社 | 窒素ガスの製造方法および装置 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL136032C (es) * | 1961-12-18 | 1900-01-01 | ||
US3788036A (en) * | 1972-07-26 | 1974-01-29 | D Stahl | Pressure equalization and purging system for heatless adsorption systems |
US3977845A (en) * | 1975-06-20 | 1976-08-31 | William Clarence Walter | Adsorptive process for selective separation of gases |
US4194890A (en) * | 1976-11-26 | 1980-03-25 | Greene & Kellogg, Inc. | Pressure swing adsorption process and system for gas separation |
US4340398A (en) * | 1981-05-20 | 1982-07-20 | Union Carbide Corporation | Pressure swing adsorption recovery |
US4381189A (en) * | 1981-10-27 | 1983-04-26 | Union Carbide Corporation | Pressure swing adsorption process and system |
US4461630A (en) * | 1982-09-30 | 1984-07-24 | Union Carbide Corporation | Product recovery in pressure swing adsorption process and system |
US4816039A (en) * | 1986-02-24 | 1989-03-28 | The Boc Group, Inc. | PSA multicomponent separation utilizing tank equalization |
FR2599274B1 (fr) * | 1986-06-02 | 1988-08-26 | Air Liquide | Procede et installation de separation d'un melange gazeux par adsorption. |
US4723966A (en) * | 1986-12-11 | 1988-02-09 | Union Carbide Corporation | Gas separation by pressure swing adsorption |
US4756723A (en) * | 1987-03-04 | 1988-07-12 | Air Products And Chemicals, Inc. | Preparation of high purity oxygen |
US5032150A (en) * | 1989-11-03 | 1991-07-16 | The Ohio State University | Pressure swing adsorption |
JP2981304B2 (ja) * | 1991-05-13 | 1999-11-22 | 東洋エンジニアリング株式会社 | ガス分離方法 |
FR2682611B1 (fr) * | 1991-10-17 | 1993-12-03 | Air Liquide | Procede et installation d'epuration d'un gaz par adsorption. |
JP3450885B2 (ja) * | 1993-07-27 | 2003-09-29 | 住友精化株式会社 | 窒素富化ガス分離方法および装置 |
US5370728A (en) * | 1993-09-07 | 1994-12-06 | Praxair Technology, Inc. | Single bed pressure swing adsorption system and process |
US5518526A (en) * | 1994-10-07 | 1996-05-21 | Praxair Technology, Inc. | Pressure swing adsorption process |
US5565018A (en) * | 1995-07-12 | 1996-10-15 | Praxair Technology, Inc. | Optimal pressure swing adsorption refluxing |
US5620501A (en) * | 1995-08-15 | 1997-04-15 | The Boc Group, Inc. | Recovery of trace gases from gas streams |
US5658371A (en) * | 1995-11-06 | 1997-08-19 | Praxair Technology, Inc. | Single bed pressure swing adsorption process for recovery of oxygen from air |
US5702504A (en) * | 1996-03-07 | 1997-12-30 | Praxair Technology, Inc. | Vacuum pressure swing adsorption process |
FR2746668B1 (fr) * | 1996-03-27 | 1998-04-30 | Air Liquide | Procede de traitement d'un melange de gaz par adsorption a variation de pression |
US5733359A (en) * | 1996-06-19 | 1998-03-31 | The Boc Group, Inc. | Pressure swing adsorption process turndown control |
US5735938A (en) * | 1997-01-15 | 1998-04-07 | Praxair Technology, Inc. | Method for production of nitrogen using oxygen selective adsorbents |
-
1997
- 1997-12-09 US US08/987,790 patent/US6048384A/en not_active Expired - Lifetime
-
1998
- 1998-11-19 ID IDP981512A patent/ID22096A/id unknown
- 1998-12-04 CN CNB981223931A patent/CN1195571C/zh not_active Expired - Fee Related
- 1998-12-07 CA CA002255526A patent/CA2255526C/en not_active Expired - Fee Related
- 1998-12-07 ES ES98123255T patent/ES2194269T3/es not_active Expired - Lifetime
- 1998-12-07 DE DE69815031T patent/DE69815031T2/de not_active Expired - Fee Related
- 1998-12-07 KR KR10-1998-0053374A patent/KR100436111B1/ko not_active IP Right Cessation
- 1998-12-07 BR BR9805203-9A patent/BR9805203A/pt unknown
- 1998-12-07 JP JP34677798A patent/JP3464766B2/ja not_active Expired - Fee Related
- 1998-12-07 EP EP98123255A patent/EP0922481B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69815031T2 (de) | 2004-03-11 |
BR9805203A (pt) | 1999-12-07 |
KR19990062850A (ko) | 1999-07-26 |
EP0922481A2 (en) | 1999-06-16 |
EP0922481A3 (en) | 1999-07-14 |
CA2255526C (en) | 2003-04-15 |
US6048384A (en) | 2000-04-11 |
CN1223164A (zh) | 1999-07-21 |
DE69815031D1 (de) | 2003-07-03 |
ID22096A (id) | 1999-09-02 |
JPH11239711A (ja) | 1999-09-07 |
CN1195571C (zh) | 2005-04-06 |
JP3464766B2 (ja) | 2003-11-10 |
CA2255526A1 (en) | 1999-06-09 |
EP0922481B1 (en) | 2003-05-28 |
KR100436111B1 (ko) | 2004-09-04 |
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