KR860001330A - 가압 산소를 제조하기위한 공기 분리공정 - Google Patents
가압 산소를 제조하기위한 공기 분리공정 Download PDFInfo
- Publication number
- KR860001330A KR860001330A KR1019850004826A KR850004826A KR860001330A KR 860001330 A KR860001330 A KR 860001330A KR 1019850004826 A KR1019850004826 A KR 1019850004826A KR 850004826 A KR850004826 A KR 850004826A KR 860001330 A KR860001330 A KR 860001330A
- Authority
- KR
- South Korea
- Prior art keywords
- air
- pressure column
- supply air
- column
- feed
- Prior art date
Links
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
-
- 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04103—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression using solely hydrostatic liquid head
-
- 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of 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
- 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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/04206—Division of the main heat exchange line in consecutive sections having different functions including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product
-
- 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
- F25J3/04406—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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/40—One fluid being 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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
- F25J2250/50—One fluid being oxygen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의공정 구제형의 개략도이다
Claims (14)
- 저압 칼럼으로부터 액체를 가온시키고 고압칼럼으로부터 증기를 냉각시키는 지점에서 열교환 관계에 있는 고압 칼럼과 저압칼럼중에서 액체증기가 접촉하여 역류함에 의하여 공급공기의 분리를 위한 공정에 있어; (A) 상기 열교환 관계의 지점으로 부터 액체를 배출하고; (B) 공급공기의 주된 부분으로 간접 열교환 시킴에 의하여 상기 배출된 액체를 증기화시키는데, 여기서 그 압력은 실제적으로 고압 칼렴의 것과 같게 하여 상기 열교환 관계의 지점보다는 압력을 상승시켜 상기 공급기체를 부분적으로 농축시키고; (C) 공급기체의 부분적으로 농축된 주된 부분의 적어도 약간의 증기 부분을 적어도 상기 가압칼럼으로 도입시키고; 그리고 (D) 저압칼럼의 것보다 더큰 압력에서 상기 (B) 단계에서 형성된 적어도 일부의 증기를 회수함을 개선점으로하는 상기의 공기분리 공정.
- 상기 1항에 있어, 서부분적으로 응축시킨 공급공기를 가압칼럼으로 도입시킴을 특징으로 하는 상기의 공기분리방법.
- 상기 1항에 있어,공급공기의 일부분은, 약 5내지 20%의 공급공기로 구성되며, 그것을 팽창시킨다음 저압칼럼에 도입시킴을 특징으로 하는 상기의 공기분리방법.
- 상기 1항에 있어, 공급공기의 주된부분은 적어도 75%의 공급공기로 구성됨을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 공급공기의 주된 부분은 약 85 내지 100%의 공급공기로 구성됨을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 상기 고압칼럼은 40내지 150pia의 범위내의 압력에서 운전됨을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 상기 저압칼럼은 대기압으로부터 30의 범위내의 압력에서 운전됨을 특징으로 하는 상기의 공기분리방법.
- 상기 1항에 있어, 상기(A)단계에서 열교환 지점으로부터 배출된 액체는 60내지 99몰%의산소농도를 가짐을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 공급공기의 주된부분의 약 20내지 35%를 (B) 단계에서 응축시킴을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 상기(D)단계에서 회수한 증기를 더욱 큰 압력으로 가압축시킴을 특징으로하는 상기의 공기분리방법.
- 상기 1항에 있어, 부분적으로 응축된 공급공기를 증기 및 액체부분으로 분리시키고 적어도 약간의 증기부분을 고압 칼럼으로 도입시킴을 특징으로 하는 상기의 공기분리방법.
- 상기 11항에 있어, 부분적으로 응축된 공급공기를 증기 및 액체부분으로 분리시키는 것은 부분적으로 응축된 공급공기를 상분리기를 통하여 통과시킴에 의하여 달성됨을 특징으로 하는 상기 공기분리방법.
- 상기 1항에 있어, 부분적으로 응축된 공급공기의 주된 부분의 증기 부분을 전부 고압칼럼으로 도입시킴을 특징으로 하는 상기의 공기분리방법.
- 상기 1항에 있어, 부분적으로 응축된 공급공기의 주된 부분의 증기부분을 일부 팽창시키고 그 다음 저압칼럼으로 도입시킴을 특징으로하는 상기의 공기분리방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US628312 | 1984-07-06 | ||
US06/628,312 US4560398A (en) | 1984-07-06 | 1984-07-06 | Air separation process to produce elevated pressure oxygen |
US628,312 | 1990-12-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR860001330A true KR860001330A (ko) | 1986-02-24 |
KR910002050B1 KR910002050B1 (ko) | 1991-04-01 |
Family
ID=24518368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019850004826A KR910002050B1 (ko) | 1984-07-06 | 1985-07-05 | 가압산소를 제조하기 위한 공기분리공정 |
Country Status (8)
Country | Link |
---|---|
US (1) | US4560398A (ko) |
EP (1) | EP0169679B1 (ko) |
JP (1) | JPS6162776A (ko) |
KR (1) | KR910002050B1 (ko) |
BR (1) | BR8503209A (ko) |
CA (1) | CA1246434A (ko) |
ES (1) | ES8608144A1 (ko) |
MX (1) | MX162919B (ko) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4817393A (en) * | 1986-04-18 | 1989-04-04 | Erickson Donald C | Companded total condensation loxboil air distillation |
US4778497A (en) * | 1987-06-02 | 1988-10-18 | Union Carbide Corporation | Process to produce liquid cryogen |
US5148680A (en) * | 1990-06-27 | 1992-09-22 | Union Carbide Industrial Gases Technology Corporation | Cryogenic air separation system with dual product side condenser |
US5108476A (en) * | 1990-06-27 | 1992-04-28 | Union Carbide Industrial Gases Technology Corporation | Cryogenic air separation system with dual temperature feed turboexpansion |
US5114452A (en) * | 1990-06-27 | 1992-05-19 | Union Carbide Industrial Gases Technology Corporation | Cryogenic air separation system for producing elevated pressure product gas |
US5098456A (en) * | 1990-06-27 | 1992-03-24 | Union Carbide Industrial Gases Technology Corporation | Cryogenic air separation system with dual feed air side condensers |
US5228297A (en) * | 1992-04-22 | 1993-07-20 | Praxair Technology, Inc. | Cryogenic rectification system with dual heat pump |
US5365741A (en) * | 1993-05-13 | 1994-11-22 | Praxair Technology, Inc. | Cryogenic rectification system with liquid oxygen boiler |
US5410885A (en) * | 1993-08-09 | 1995-05-02 | Smolarek; James | Cryogenic rectification system for lower pressure operation |
US5398514A (en) * | 1993-12-08 | 1995-03-21 | Praxair Technology, Inc. | Cryogenic rectification system with intermediate temperature turboexpansion |
US5463871A (en) * | 1994-10-04 | 1995-11-07 | Praxair Technology, Inc. | Side column cryogenic rectification system for producing lower purity oxygen |
US6253576B1 (en) | 1999-11-09 | 2001-07-03 | Air Products And Chemicals, Inc. | Process for the production of intermediate pressure oxygen |
DE10161584A1 (de) * | 2001-12-14 | 2003-06-26 | Linde Ag | Vorrichtung und Verfahren zur Erzeugung gasförmigen Sauerstoffs unter erhöhtem Druck |
US6962062B2 (en) * | 2003-12-10 | 2005-11-08 | L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Proédés Georges Claude | Process and apparatus for the separation of air by cryogenic distillation |
DE102013002835A1 (de) * | 2013-02-19 | 2014-08-21 | Linde Aktiengesellschaft | Verfahren zur Erzeugung von gasförmigem Sauerstoff durch Tieftemperaturzerlegung von Luft |
CN109676367A (zh) * | 2018-12-28 | 2019-04-26 | 乔治洛德方法研究和开发液化空气有限公司 | 一种热交换器组件及装配所述热交换器组件的方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812645A (en) * | 1956-02-29 | 1957-11-12 | Union Carbide Corp | Process and apparatus for separating gas mixtures |
US2896415A (en) * | 1956-11-21 | 1959-07-28 | Air Prod Inc | Liquefied gas pressurizing systems |
DE1124529B (de) * | 1957-07-04 | 1962-03-01 | Linde Eismasch Ag | Verfahren und Einrichtung zur Durchfuehrung von Waermeaustauschvorgaengen in einer mit vorgeschalteten Regeneratoren arbeitenden Gaszerlegungsanlage |
USRE25193E (en) * | 1957-08-16 | 1962-07-03 | Method and apparatus for separating gaseous mixtures | |
US3086371A (en) * | 1957-09-12 | 1963-04-23 | Air Prod & Chem | Fractionation of gaseous mixtures |
US3210951A (en) * | 1960-08-25 | 1965-10-12 | Air Prod & Chem | Method for low temperature separation of gaseous mixtures |
US3609983A (en) * | 1968-05-16 | 1971-10-05 | Air Reduction | Krypton-xenon recovery system and process |
GB1425450A (en) * | 1972-01-21 | 1976-02-18 | Air Prod & Chem | Air separation |
DE2323941A1 (de) * | 1973-05-11 | 1974-11-28 | Linde Ag | Verfahren und vorrichtung zur gewinnung von gasfoermigem sauerstoff |
DE2557453C2 (de) * | 1975-12-19 | 1982-08-12 | Linde Ag, 6200 Wiesbaden | Verfahren zur Gewinnung von gasförmigem Sauerstoff |
SU676829A1 (ru) * | 1976-06-09 | 1979-07-30 | Московское Ордена Ленина И Ордена Трудового Красного Знамени Высшее Техническое Училище Им. Н.Э.Баумана | Способ разделени воздуха на азот и кислород |
DE2646690A1 (de) * | 1976-10-15 | 1978-04-20 | Linde Ag | Verfahren und vorrichtung zur herstellung einer mischung von sauerstoff und wasserdampf unter druck |
JPS5634784A (en) * | 1979-08-30 | 1981-04-07 | Riken Vitamin Co Ltd | Stabilization of fat or oil |
JPS5644577A (en) * | 1979-09-19 | 1981-04-23 | Hitachi Ltd | Method of sampling pressurized nitrogen for air separator |
JPS5680681A (en) * | 1979-12-07 | 1981-07-02 | Hitachi Ltd | Air separator |
US4410343A (en) * | 1981-12-24 | 1983-10-18 | Union Carbide Corporation | Air boiling process to produce low purity oxygen |
-
1984
- 1984-07-06 US US06/628,312 patent/US4560398A/en not_active Expired - Fee Related
-
1985
- 1985-06-18 CA CA000484359A patent/CA1246434A/en not_active Expired
- 1985-07-04 BR BR8503209A patent/BR8503209A/pt not_active IP Right Cessation
- 1985-07-05 KR KR1019850004826A patent/KR910002050B1/ko not_active IP Right Cessation
- 1985-07-05 JP JP60146918A patent/JPS6162776A/ja active Granted
- 1985-07-05 EP EP85304797A patent/EP0169679B1/en not_active Expired
- 1985-07-05 ES ES544898A patent/ES8608144A1/es not_active Expired
- 1985-07-05 MX MX205904A patent/MX162919B/es unknown
Also Published As
Publication number | Publication date |
---|---|
EP0169679A3 (en) | 1986-03-19 |
MX162919B (es) | 1991-07-08 |
JPS6367636B2 (ko) | 1988-12-27 |
JPS6162776A (ja) | 1986-03-31 |
ES8608144A1 (es) | 1986-06-01 |
CA1246434A (en) | 1988-12-13 |
US4560398A (en) | 1985-12-24 |
KR910002050B1 (ko) | 1991-04-01 |
EP0169679B1 (en) | 1989-06-14 |
EP0169679A2 (en) | 1986-01-29 |
BR8503209A (pt) | 1986-03-25 |
ES544898A0 (es) | 1986-06-01 |
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