ZA905895B - Vaporization-condensation apparatus for air distillation double column,and air distillation equipment including such apparatus - Google Patents
Vaporization-condensation apparatus for air distillation double column,and air distillation equipment including such apparatusInfo
- Publication number
- ZA905895B ZA905895B ZA905895A ZA905895A ZA905895B ZA 905895 B ZA905895 B ZA 905895B ZA 905895 A ZA905895 A ZA 905895A ZA 905895 A ZA905895 A ZA 905895A ZA 905895 B ZA905895 B ZA 905895B
- Authority
- ZA
- South Africa
- Prior art keywords
- air distillation
- vaporization
- equipment including
- double column
- condensation
- Prior art date
Links
- 238000004821 distillation Methods 0.000 title 2
- 238000009833 condensation Methods 0.000 title 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04812—Different modes, i.e. "runs" of operation
- F25J3/04818—Start-up of the process
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
- F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04793—Rectification, e.g. columns; Reboiler-condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
- F25J3/04884—Arrangement of reboiler-condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
- F25J5/005—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger in a reboiler-condenser, e.g. within a column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/06—Lifting of liquids by gas lift, e.g. "Mammutpumpe"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/50—Processes or apparatus involving steps for recycling of process streams the recycled stream being oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/04—Down-flowing type boiler-condenser, i.e. with evaporation of a falling liquid film
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/10—Boiler-condenser with superposed stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
-
- 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
- Y10S62/00—Refrigeration
- Y10S62/902—Apparatus
- Y10S62/903—Heat exchange structure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8910223A FR2650379B1 (fr) | 1989-07-28 | 1989-07-28 | Appareil de vaporisation-condensation pour double colonne de distillation d'air, et installation de distillation d'air comportant un tel appareil |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA905895B true ZA905895B (en) | 1991-05-29 |
Family
ID=9384264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA905895A ZA905895B (en) | 1989-07-28 | 1990-07-26 | Vaporization-condensation apparatus for air distillation double column,and air distillation equipment including such apparatus |
Country Status (11)
Country | Link |
---|---|
US (1) | US5071458A (pt) |
EP (1) | EP0410832B1 (pt) |
JP (1) | JP2985892B2 (pt) |
KR (1) | KR910003342A (pt) |
BR (1) | BR9003676A (pt) |
CA (1) | CA2022168C (pt) |
DE (1) | DE69000593T2 (pt) |
ES (1) | ES2036408T3 (pt) |
FR (1) | FR2650379B1 (pt) |
PT (1) | PT94834A (pt) |
ZA (1) | ZA905895B (pt) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9016766D0 (en) * | 1990-07-31 | 1990-09-12 | Boc Group Plc | Boiling liquefied gas |
FR2689223B1 (fr) † | 1992-03-24 | 1994-05-06 | Air Liquide | Procede et installation de transfert de fluide en provenance d'une colonne de distillation, notamment d'air. |
US5438836A (en) * | 1994-08-05 | 1995-08-08 | Praxair Technology, Inc. | Downflow plate and fin heat exchanger for cryogenic rectification |
US5699671A (en) * | 1996-01-17 | 1997-12-23 | Praxair Technology, Inc. | Downflow shell and tube reboiler-condenser heat exchanger for cryogenic rectification |
DE19605500C1 (de) * | 1996-02-14 | 1997-04-17 | Linde Ag | Vorrichtung und Verfahren zum Verdampfen einer Flüssigkeit |
US5775129A (en) * | 1997-03-13 | 1998-07-07 | The Boc Group, Inc. | Heat exchanger |
GB9705889D0 (en) * | 1997-03-21 | 1997-05-07 | Boc Group Plc | Heat exchange method and apparatus |
US5956972A (en) * | 1997-12-23 | 1999-09-28 | The Boc Group, Inc. | Method of operating a lower pressure column of a double column distillation unit |
DE59901114D1 (de) * | 1998-01-30 | 2002-05-08 | Linde Ag | Verfahren und vorrichtung zum verdampfen von flüssigem sauerstoff |
US6264809B1 (en) | 1998-10-30 | 2001-07-24 | Pti Advanced Filtration, Inc. | Enhanced membrane electrode devices useful for electrodeposition coating |
DE19921949A1 (de) * | 1999-05-12 | 2000-11-16 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
DE19950570A1 (de) * | 1999-10-20 | 2001-04-26 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
ES2243182T3 (es) * | 1999-10-20 | 2005-12-01 | Linde Aktiengesellschaft | Procedimiento y dispositivo para descomponer aire a baja temperatura. |
FR2807826B1 (fr) * | 2000-04-13 | 2002-06-14 | Air Liquide | Echangeur vaporisateur-condenseur du type a bain |
DE10027140A1 (de) * | 2000-05-31 | 2001-12-06 | Linde Ag | Mehrstöckiger Badkondensator |
US6349566B1 (en) | 2000-09-15 | 2002-02-26 | Air Products And Chemicals, Inc. | Dephlegmator system and process |
FR2822079B1 (fr) * | 2001-03-16 | 2003-05-16 | Air Liquide | Procede et installation de production d'oxygene ultra-pur par distillation d'air |
US6393866B1 (en) | 2001-05-22 | 2002-05-28 | Praxair Technology, Inc. | Cryogenic condensation and vaporization system |
DE10205878A1 (de) * | 2002-02-13 | 2003-08-21 | Linde Ag | Tieftemperatur-Luftzerlegungsverfahren |
FR2853723B1 (fr) * | 2003-04-10 | 2007-03-30 | Air Liquide | Procede et installation de traitement d'un bain de liquide riche en oxygene recueilli en pied d'une colonne de distillation cryogenique |
US7266976B2 (en) * | 2004-10-25 | 2007-09-11 | Conocophillips Company | Vertical heat exchanger configuration for LNG facility |
US20070028649A1 (en) * | 2005-08-04 | 2007-02-08 | Chakravarthy Vijayaraghavan S | Cryogenic air separation main condenser system with enhanced boiling and condensing surfaces |
EP1890099A1 (de) | 2006-08-08 | 2008-02-20 | Linde Aktiengesellschaft | Rücklaufkondensator |
FR2916523B1 (fr) * | 2007-05-21 | 2014-12-12 | Air Liquide | Capacite de stockage, appareil et procede de production de monoxyde de carbone et/ou d'hydrogene par separation cryogenique integrant une telle capacite. |
US9476641B2 (en) * | 2007-09-28 | 2016-10-25 | Praxair Technology, Inc. | Down-flow condenser reboiler system for use in an air separation plant |
US9453674B2 (en) | 2013-12-16 | 2016-09-27 | Praxair Technology, Inc. | Main heat exchange system and method for reboiling |
US9488408B2 (en) * | 2014-01-29 | 2016-11-08 | Praxair Technology, Inc. | Condenser-reboiler system and method |
EP3176526A1 (de) * | 2015-12-03 | 2017-06-07 | Linde Aktiengesellschaft | Verfahren und anordnung zum überführen von fluid |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1152432B (de) * | 1962-04-21 | 1963-08-08 | Linde Eismasch Ag | Platten-Kondensator-Verdampfer, insbesondere fuer Gas- und Luftzerleger |
US4017284A (en) * | 1973-05-14 | 1977-04-12 | Cryox Corporation | Air distillation apparatus comprising regenerator means for producing oxygen |
FR2542421B1 (fr) * | 1983-03-08 | 1985-07-05 | Air Liquide | Procede et appareil pour produire un gaz a haute purete par vaporisation d'un liquide cryogenique |
FR2547898B1 (fr) * | 1983-06-24 | 1985-11-29 | Air Liquide | Procede et dispositif pour vaporiser un liquide par echange de chaleur avec un deuxieme fluide, et leur application a une installation de distillation d'air |
JPS60253782A (ja) * | 1984-05-30 | 1985-12-14 | 日本酸素株式会社 | 大型空気分離装置用凝縮器 |
-
1989
- 1989-07-28 FR FR8910223A patent/FR2650379B1/fr not_active Expired - Fee Related
-
1990
- 1990-07-04 EP EP90401934A patent/EP0410832B1/fr not_active Expired - Lifetime
- 1990-07-04 ES ES199090401934T patent/ES2036408T3/es not_active Expired - Lifetime
- 1990-07-04 DE DE9090401934T patent/DE69000593T2/de not_active Expired - Fee Related
- 1990-07-25 US US07/558,091 patent/US5071458A/en not_active Ceased
- 1990-07-26 ZA ZA905895A patent/ZA905895B/xx unknown
- 1990-07-26 KR KR1019900011359A patent/KR910003342A/ko not_active Application Discontinuation
- 1990-07-26 JP JP2196394A patent/JP2985892B2/ja not_active Expired - Lifetime
- 1990-07-27 BR BR909003676A patent/BR9003676A/pt unknown
- 1990-07-27 PT PT94834A patent/PT94834A/pt not_active Application Discontinuation
- 1990-07-27 CA CA002022168A patent/CA2022168C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
BR9003676A (pt) | 1991-09-03 |
KR910003342A (ko) | 1991-02-27 |
EP0410832B1 (fr) | 1992-12-16 |
JP2985892B2 (ja) | 1999-12-06 |
CA2022168A1 (fr) | 1991-01-29 |
AU625706B2 (en) | 1992-07-16 |
PT94834A (pt) | 1993-10-29 |
US5071458A (en) | 1991-12-10 |
JPH0370977A (ja) | 1991-03-26 |
CA2022168C (fr) | 1995-03-14 |
DE69000593T2 (de) | 1993-04-22 |
DE69000593D1 (de) | 1993-01-28 |
EP0410832A1 (fr) | 1991-01-30 |
AU5985790A (en) | 1991-01-31 |
ES2036408T3 (es) | 1993-05-16 |
FR2650379B1 (fr) | 1991-10-18 |
FR2650379A1 (fr) | 1991-02-01 |
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