DE69208418T2 - Verfahren und Anlage zur gemischten Herstellung von Sauerstoff hoher und niederer Reinheit - Google Patents

Verfahren und Anlage zur gemischten Herstellung von Sauerstoff hoher und niederer Reinheit

Info

Publication number
DE69208418T2
DE69208418T2 DE69208418T DE69208418T DE69208418T2 DE 69208418 T2 DE69208418 T2 DE 69208418T2 DE 69208418 T DE69208418 T DE 69208418T DE 69208418 T DE69208418 T DE 69208418T DE 69208418 T2 DE69208418 T2 DE 69208418T2
Authority
DE
Germany
Prior art keywords
plant
purity oxygen
low purity
mixed production
mixed
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 - Fee Related
Application number
DE69208418T
Other languages
English (en)
Other versions
DE69208418T3 (de
DE69208418D1 (de
Inventor
Bao Ha
Catherine Garnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liquid Air Engineering Corp Canada
Original Assignee
Liquid Air Engineering Corp Canada
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25104476&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69208418(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Liquid Air Engineering Corp Canada filed Critical Liquid Air Engineering Corp Canada
Publication of DE69208418D1 publication Critical patent/DE69208418D1/de
Application granted granted Critical
Publication of DE69208418T2 publication Critical patent/DE69208418T2/de
Publication of DE69208418T3 publication Critical patent/DE69208418T3/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
    • B01D3/322—Reboiler specifications
    • 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
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • F25J3/04175—Hot end purification of the feed air by adsorption of the impurities at a pressure of substantially more than the highest 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
    • F25J3/04151—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
    • F25J3/04296—Claude expansion, i.e. expanded into the main or 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
    • F25J3/04406—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
    • F25J3/04418—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 with thermally overlapping high and low pressure columns
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • F25J2215/52—Oxygen production with multiple purity O2
    • 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
    • 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
    • Y10S62/94—High pressure column

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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)
DE69208418T 1991-10-15 1992-10-14 Verfahren und Anlage zur gemischten Herstellung von Sauerstoff hoher und niederer Reinheit Expired - Fee Related DE69208418T3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/775,453 US5315833A (en) 1991-10-15 1991-10-15 Process for the mixed production of high and low purity oxygen

Publications (3)

Publication Number Publication Date
DE69208418D1 DE69208418D1 (de) 1996-03-28
DE69208418T2 true DE69208418T2 (de) 1996-07-04
DE69208418T3 DE69208418T3 (de) 1999-09-23

Family

ID=25104476

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69208418T Expired - Fee Related DE69208418T3 (de) 1991-10-15 1992-10-14 Verfahren und Anlage zur gemischten Herstellung von Sauerstoff hoher und niederer Reinheit

Country Status (4)

Country Link
US (3) US5315833A (de)
EP (1) EP0538117B2 (de)
DE (1) DE69208418T3 (de)
ES (1) ES2083711T5 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398514A (en) * 1993-12-08 1995-03-21 Praxair Technology, Inc. Cryogenic rectification system with intermediate temperature turboexpansion
US5467601A (en) * 1994-05-10 1995-11-21 Praxair Technology, Inc. Air boiling cryogenic rectification system with lower power requirements
US5467602A (en) * 1994-05-10 1995-11-21 Praxair Technology, Inc. Air boiling cryogenic rectification system for producing elevated pressure oxygen
DE4443190A1 (de) * 1994-12-05 1996-06-13 Linde Ag Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
US5669237A (en) * 1995-03-10 1997-09-23 Linde Aktiengesellschaft Method and apparatus for the low-temperature fractionation of air
US5582036A (en) * 1995-08-30 1996-12-10 Praxair Technology, Inc. Cryogenic air separation blast furnace system
US5546767A (en) * 1995-09-29 1996-08-20 Praxair Technology, Inc. Cryogenic rectification system for producing dual purity oxygen
GB9521782D0 (en) * 1995-10-24 1996-01-03 Boc Group Plc Air separation
EP0793069A1 (de) * 1996-03-01 1997-09-03 Air Products And Chemicals, Inc. Mit einem Aufkochkompressor versehener Generator für Sauerstoff von zwei Reinheitsgraden
US5666824A (en) * 1996-03-19 1997-09-16 Praxair Technology, Inc. Cryogenic rectification system with staged feed air condensation
US5611219A (en) * 1996-03-19 1997-03-18 Praxair Technology, Inc. Air boiling cryogenic rectification system with staged feed air condensation
US5666828A (en) * 1996-06-26 1997-09-16 Praxair Technology, Inc. Cryogenic hybrid system for producing low purity oxygen and high purity oxygen
US5678427A (en) * 1996-06-27 1997-10-21 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity nitrogen
US5669236A (en) * 1996-08-05 1997-09-23 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity oxygen
US5682766A (en) * 1996-12-12 1997-11-04 Praxair Technology, Inc. Cryogenic rectification system for producing lower purity oxygen and higher purity oxygen
US5682765A (en) * 1996-12-12 1997-11-04 Praxair Technology, Inc. Cryogenic rectification system for producing argon and lower purity oxygen
US5836174A (en) * 1997-05-30 1998-11-17 Praxair Technology, Inc. Cryogenic rectification system for producing multi-purity oxygen
US5829271A (en) * 1997-10-14 1998-11-03 Praxair Technology, Inc. Cryogenic rectification system for producing high pressure oxygen
US5806342A (en) * 1997-10-15 1998-09-15 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity oxygen
US5881570A (en) * 1998-04-06 1999-03-16 Praxair Technology, Inc. Cryogenic rectification apparatus for producing high purity oxygen or low purity oxygen
US5865041A (en) * 1998-05-01 1999-02-02 Air Products And Chemicals, Inc. Distillation process using a mixing column to produce at least two oxygen-rich gaseous streams having different oxygen purities
US5916262A (en) * 1998-09-08 1999-06-29 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity oxygen
FR2787559A1 (fr) * 1998-12-22 2000-06-23 Air Liquide Procede et installation de separation d'air par distillation cryogenique
FR2787561A1 (fr) * 1998-12-22 2000-06-23 Air Liquide Procede de separation d'air par distillation cryogenique
DE19936816A1 (de) * 1999-08-05 2001-02-08 Linde Ag Verfahren und Vorrichtung zur Gewinnung von Sauerstoff unter überatmosphärischem Druck
DE10212420A1 (de) * 2002-03-21 2003-10-16 Erich Thallner Einrichtung zur Aufnahme eines Wafers
US20070204652A1 (en) * 2006-02-21 2007-09-06 Musicus Paul Process and apparatus for producing ultrapure oxygen
US7929847B2 (en) * 2008-06-18 2011-04-19 Sanwa Technologies Limited User-configurable waterproof camera case
US8479535B2 (en) * 2008-09-22 2013-07-09 Praxair Technology, Inc. Method and apparatus for producing high purity oxygen
JP6159242B2 (ja) * 2013-12-13 2017-07-05 大陽日酸株式会社 空気分離方法及び装置
US20150323247A1 (en) * 2014-05-07 2015-11-12 Maulik R. Shelat Heat exchanger assembly and system for a cryogenic air separation unit
CN106989567A (zh) * 2017-04-25 2017-07-28 河南开元空分集团有限公司 一种低能耗的同时生产富氧气体和高纯氮气的装置和方法
CN110566302A (zh) * 2019-09-25 2019-12-13 昆山三一环保科技有限公司 一种低温余热回收系统的装置

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US4615716A (en) * 1985-08-27 1986-10-07 Air Products And Chemicals, Inc. Process for producing ultra high purity oxygen
US4817393A (en) * 1986-04-18 1989-04-04 Erickson Donald C Companded total condensation loxboil air distillation
US4702757A (en) * 1986-08-20 1987-10-27 Air Products And Chemicals, Inc. Dual air pressure cycle to produce low purity oxygen
US4704148A (en) * 1986-08-20 1987-11-03 Air Products And Chemicals, Inc. Cycle to produce low purity oxygen
US4777803A (en) * 1986-12-24 1988-10-18 Erickson Donald C Air partial expansion refrigeration for cryogenic air separation
US4817394A (en) * 1988-02-02 1989-04-04 Erickson Donald C Optimized intermediate height reflux for multipressure air distillation
US4854954A (en) * 1988-05-17 1989-08-08 Erickson Donald C Rectifier liquid generated intermediate reflux for subambient cascades
US4895583A (en) * 1989-01-12 1990-01-23 The Boc Group, Inc. Apparatus and method for separating air
US4936099A (en) * 1989-05-19 1990-06-26 Air Products And Chemicals, Inc. Air separation process for the production of oxygen-rich and nitrogen-rich products
US5006139A (en) * 1990-03-09 1991-04-09 Air Products And Chemicals, Inc. Cryogenic air separation process for the production of nitrogen
US5006137A (en) * 1990-03-09 1991-04-09 Air Products And Chemicals, Inc. Nitrogen generator with dual reboiler/condensers in the low pressure distillation column
US5114449A (en) * 1990-08-28 1992-05-19 Air Products And Chemicals, Inc. Enhanced recovery of argon from cryogenic air separation cycles
US5069699A (en) * 1990-09-20 1991-12-03 Air Products And Chemicals, Inc. Triple distillation column nitrogen generator with plural reboiler/condensers
US5165245A (en) * 1991-05-14 1992-11-24 Air Products And Chemicals, Inc. Elevated pressure air separation cycles with liquid production
US5255524A (en) * 1992-02-13 1993-10-26 Air Products & Chemicals, Inc. Dual heat pump cycles for increased argon recovery
US5257504A (en) * 1992-02-18 1993-11-02 Air Products And Chemicals, Inc. Multiple reboiler, double column, elevated pressure air separation cycles and their integration with gas turbines

Also Published As

Publication number Publication date
US5396773A (en) 1995-03-14
DE69208418T3 (de) 1999-09-23
US5315833A (en) 1994-05-31
DE69208418D1 (de) 1996-03-28
US5349824A (en) 1994-09-27
EP0538117B1 (de) 1996-02-21
EP0538117A1 (de) 1993-04-21
EP0538117B2 (de) 1999-07-21
ES2083711T5 (es) 1999-10-01
ES2083711T3 (es) 1996-04-16

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