ES2077085T3 - Produccion de argon a partir de aire con escaso contenido en oxigeno. - Google Patents
Produccion de argon a partir de aire con escaso contenido en oxigeno.Info
- Publication number
- ES2077085T3 ES2077085T3 ES91101288T ES91101288T ES2077085T3 ES 2077085 T3 ES2077085 T3 ES 2077085T3 ES 91101288 T ES91101288 T ES 91101288T ES 91101288 T ES91101288 T ES 91101288T ES 2077085 T3 ES2077085 T3 ES 2077085T3
- Authority
- ES
- Spain
- Prior art keywords
- column
- argon
- improvement
- side arm
- liquid oxygen
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B23/00—Noble gases; Compounds thereof
-
- 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
- F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
- F25J3/04915—Combinations of different material exchange elements, e.g. within different columns
- F25J3/04921—Combinations of different material exchange elements, e.g. within different columns within the same 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04369—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of argon or argon enriched stream
-
- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
-
- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04709—Producing crude argon in a crude argon column as an auxiliary column system in at least a dual pressure main column system
-
- 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
-
- 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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/58—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being argon or crude argon
-
- 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
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
-
- 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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
-
- 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
- Y10S62/905—Column
- Y10S62/906—Packing
-
- 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
- Y10S62/923—Inert gas
- Y10S62/924—Argon
-
- 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
- Y10S62/939—Partial feed stream expansion, air
Abstract
LA PRESENTE INVENCION ES UNA MEJORA EN EL METODO PARA PRODUCIR ARGON CRUDO DIRECTAMENTE DEL RECIPIENTE DE FRIO EN UNIDAD CRIOGENICA DE SEPARACION DE AIRE. LA MEJORA CONSISTE EN LA PRODUCCION DE ARGON CRUDO CONTENIENDO CONCENTRACIONES MUY PEQUEÑAS DE OXIGENO, POR EJ. INFERIORES AL 0.5%, SIN NINGUNA PERDIDA EN LA RECUPERACION. LA MEJORA SE LLEVA A CABO USANDO UN NUMERO EFECTIVO DE ETAPAS TEORICAS EN LA COLUMNA DEL BRAZO LATERAL (135) DE TAL FORMA QUE SE OCASIONE LA PUREZA DEL PRODUCTO DE ARGON DESEADA SIN SACRIFICAR LA RECUPERACION DEL ARGON. EL OXIGENO LIQUIDO CRUDO (129) SE SUMINISTRA DESDE LA PARTE SUPERIOR DE LA COLUMNA DE ALTA PRESION (107) HASTA EL CONDENSADOR DE EBULLICION (133) SITUADO EN LA PARTE SUPERIOR DE LA COLUMNA DEL BRAZO LATERAL (135) EN UNA CANTIDAD QUE ALCANZA ENTRE 1.04 Y 1.36 VECES EL FLUJO MINIMO TEORICO DEL OXIGENO LIQUIDO CRUDO NECESARIO PARA VAPORIZAR COMPLETAMENTE ESE FLUJO MINIMO DE OXIGENO LIQUIDO CRUDO HASTA SU PUNTO DE CONDENSACION; LLEVANDO A CABO, POSTERIORMENTE EL CONTACTO INTIMO ENTRE EL VAPOR Y LAS FASES LIQUIDAS EN LA COLUMNA DEL BRAZO LATERAL (135) MEDIANTE UNA COMBINACION DE BANDEJAS TAMIZADORAS CONVENCIONALES Y EMPAQUETAMIENTOS ESTRUCTURADOS DE BAJA CAIDA DE PRESION DE TAL FORMA QUE LA CAIDA DE PRESION A LO LARGO DE ESTA COMBINACION RESULTE EN UNA PRESION EN LA PARTE SUPERIOR DE LA COLUMNA DEL BRAZO LATERAL TAL QUE EL FLUJO DE OXIGENO LIQUIDO CRUDO QUE SE DIRIGE AL CONDENSADOR (133) SITUADO EN LA PARTE SUPERIOR DE LA COLUMNA DEL BRAZO LATERAL PUEDA MANTENERSE EN LA CANTIDAD APROPIADA. ADEMAS, ESTA MEJORA SE LLEVA A CABO SIN NINGUNA PENALIZACION ENERGETICA EN LA UNIDAD CRIOGENICA DE SEPARACION DE AIRE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/474,431 US4994098A (en) | 1990-02-02 | 1990-02-02 | Production of oxygen-lean argon from air |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2077085T3 true ES2077085T3 (es) | 1995-11-16 |
Family
ID=23883504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91101288T Expired - Lifetime ES2077085T3 (es) | 1990-02-02 | 1991-01-31 | Produccion de argon a partir de aire con escaso contenido en oxigeno. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4994098A (es) |
EP (1) | EP0446593B1 (es) |
JP (1) | JP2597521B2 (es) |
KR (1) | KR930001208B1 (es) |
CA (1) | CA2035050C (es) |
DE (1) | DE69111099T2 (es) |
ES (1) | ES2077085T3 (es) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5159816A (en) * | 1991-05-14 | 1992-11-03 | Air Products And Chemicals, Inc. | Method of purifying argon through cryogenic adsorption |
US5133790A (en) * | 1991-06-24 | 1992-07-28 | Union Carbide Industrial Gases Technology Corporation | Cryogenic rectification method for producing refined argon |
US5197296A (en) * | 1992-01-21 | 1993-03-30 | Praxair Technology, Inc. | Cryogenic rectification system for producing elevated pressure product |
US5351492A (en) * | 1992-09-23 | 1994-10-04 | Air Products And Chemicals, Inc. | Distillation strategies for the production of carbon monoxide-free nitrogen |
US5365741A (en) * | 1993-05-13 | 1994-11-22 | Praxair Technology, Inc. | Cryogenic rectification system with liquid oxygen boiler |
FR2716816B1 (fr) * | 1994-03-02 | 1996-05-03 | Air Liquide | Procédé de redémarrage d'une colonne auxiliaire de séparation argon/oxygène par distillation, et installation correspondante. |
US5396772A (en) * | 1994-03-11 | 1995-03-14 | The Boc Group, Inc. | Atmospheric gas separation method |
FR2718518B1 (fr) * | 1994-04-12 | 1996-05-03 | Air Liquide | Procédé et installation pour la production de l'oxygène par distillation de l'air. |
US5557951A (en) * | 1995-03-24 | 1996-09-24 | Praxair Technology, Inc. | Process and apparatus for recovery and purification of argon from a cryogenic air separation unit |
US5799508A (en) * | 1996-03-21 | 1998-09-01 | Praxair Technology, Inc. | Cryogenic air separation system with split kettle liquid |
US5682767A (en) * | 1996-11-18 | 1997-11-04 | Air Liquide Process And Construction | Argon production |
US5847249A (en) * | 1997-07-28 | 1998-12-08 | Catalytic Distillation Technologies | Apparatus and process for catalytic distillations |
US20060106421A1 (en) * | 2004-11-16 | 2006-05-18 | Clifford Teoh | Expansible neck bridge |
US8479535B2 (en) * | 2008-09-22 | 2013-07-09 | Praxair Technology, Inc. | Method and apparatus for producing high purity oxygen |
US20130019634A1 (en) * | 2011-07-18 | 2013-01-24 | Henry Edward Howard | Air separation method and apparatus |
EP3299086A1 (en) | 2016-09-26 | 2018-03-28 | Air Products And Chemicals, Inc. | Exchange column with corrugated structured packing and method for use thereof |
US20180087835A1 (en) | 2016-09-26 | 2018-03-29 | Air Products And Chemicals, Inc. | Exchange Column With Corrugated Structured Packing And Method For Use Thereof |
FR3102548B1 (fr) * | 2019-10-24 | 2023-03-10 | Air Liquide | Procédé et appareil de séparation d’air par distillation cryogénique |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127260A (en) * | 1964-03-31 | Separation of air into nitrogen | ||
US3079759A (en) * | 1961-03-22 | 1963-03-05 | Air Prod & Chem | Separation of gaseous mixtures |
FR2041701B1 (es) * | 1969-05-05 | 1974-02-01 | Air Liquide | |
US4137056A (en) * | 1974-04-26 | 1979-01-30 | Golovko Georgy A | Process for low-temperature separation of air |
JPS6239529U (es) * | 1985-08-28 | 1987-03-09 | ||
SU1416820A1 (ru) * | 1986-12-12 | 1988-08-15 | Предприятие П/Я А-3605 | Способ получени чистого аргона |
JPS63249506A (ja) * | 1987-04-03 | 1988-10-17 | 大前 敏文 | 噴水式歯ブラシ |
US4871382A (en) * | 1987-12-14 | 1989-10-03 | Air Products And Chemicals, Inc. | Air separation process using packed columns for oxygen and argon recovery |
DE3840506A1 (de) * | 1988-12-01 | 1990-06-07 | Linde Ag | Verfahren und vorrichtung zur luftzerlegung |
-
1990
- 1990-02-02 US US07/474,431 patent/US4994098A/en not_active Expired - Fee Related
-
1991
- 1991-01-28 CA CA002035050A patent/CA2035050C/en not_active Expired - Fee Related
- 1991-01-29 JP JP3075926A patent/JP2597521B2/ja not_active Expired - Fee Related
- 1991-01-31 EP EP91101288A patent/EP0446593B1/en not_active Expired - Lifetime
- 1991-01-31 DE DE69111099T patent/DE69111099T2/de not_active Expired - Fee Related
- 1991-01-31 ES ES91101288T patent/ES2077085T3/es not_active Expired - Lifetime
- 1991-02-02 KR KR1019910001927A patent/KR930001208B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2035050A1 (en) | 1991-08-03 |
JP2597521B2 (ja) | 1997-04-09 |
CA2035050C (en) | 1994-04-19 |
DE69111099T2 (de) | 1995-12-21 |
EP0446593B1 (en) | 1995-07-12 |
DE69111099D1 (de) | 1995-08-17 |
KR910015493A (ko) | 1991-09-30 |
JPH04222380A (ja) | 1992-08-12 |
EP0446593A1 (en) | 1991-09-18 |
KR930001208B1 (ko) | 1993-02-22 |
US4994098A (en) | 1991-02-19 |
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