EP0982554A1 - Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation - Google Patents

Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation Download PDF

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Publication number
EP0982554A1
EP0982554A1 EP99402116A EP99402116A EP0982554A1 EP 0982554 A1 EP0982554 A1 EP 0982554A1 EP 99402116 A EP99402116 A EP 99402116A EP 99402116 A EP99402116 A EP 99402116A EP 0982554 A1 EP0982554 A1 EP 0982554A1
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EP
European Patent Office
Prior art keywords
oxygen
column
impure
nitrogen
impure 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.)
Withdrawn
Application number
EP99402116A
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English (en)
French (fr)
Inventor
Norbert Rieth
François De Bussy
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0982554A1 publication Critical patent/EP0982554A1/de
Withdrawn legal-status Critical Current

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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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F25J3/04587—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating for the NH3 synthesis, e.g. for adjusting the H2/N2 ratio
    • 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
    • F25J3/04084—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 nitrogen
    • 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
    • F25J3/04248—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
    • F25J3/0446—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 the heat generated by mixing two different phases
    • F25J3/04466—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 the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid 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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • 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
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, 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
    • 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
    • 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

Definitions

  • the present invention relates to a method and an installation for production of impure oxygen by air distillation.
  • the impure oxygen typically contains from 1 to 5 mol% of argon. This argon accumulates in the synthesis loop and can cause losses of ammonia production and possible pollution during purges.
  • J-B-74023997 describes the use of an air separation device for supply oxygen and nitrogen to an ammonia production unit.
  • EP-A-0562893 describes a process using a double column to produce nitrogen containing less than 10 ppm in moles of oxygen for a medium to high purity ammonia and oxygen manufacturing unit, or 95 to 99.5 mol% for the production of hydrogen by reaction of oxygen on heavy hydrocarbons, hydrogen being intended to supply the same ammonia manufacturing unit.
  • EP-A-0636845 describes a process in which oxygen pumped a double column is sent at the head of a mixing column.
  • the process uses an intermediate pressure column of the so-called column type Etienne supplied with rich liquid from the medium pressure column and produces oxygen at 30 bar with 95% by mole of oxygen, 2% by mole nitrogen and 3% by mole of argon.
  • EP-A-0531182 discloses a process using a mixing column operating at a pressure different from that of the medium pressure column to produce oxygen having a purity between 80 and 97 mol% oxygen.
  • US-A-5490391 describes a process using a double column and a mixing column with a Claude turbine to provide cold to the device.
  • a method of supplying of impure oxygen to a syngas production unit including synthesis is separated into a part enriched in hydrogen intended for a unit of ammonia synthesis characterized in that the impure oxygen comes from a air separation device by cryogenic distillation and contains from 70 to 98% in moles of oxygen and less than 2% in moles of argon.
  • the impure oxygen contains from 1 to 30 mol% of nitrogen.
  • the impure oxygen contains between 75 and 85 mol% of oxygen, it contains 15 to 25 mol% of nitrogen and less than 2 mol% of argon.
  • the synthesis gas production unit can be a device for reforming or partial oxidation.
  • a method of supply of impure oxygen to a syngas production unit including the synthesis gas is separated into a part enriched in hydrogen intended for an ammonia synthesis and nitrogen supply unit to the ammonia synthesis characterized in that impure oxygen and nitrogen come from an air separation device by cryogenic distillation and impure oxygen contains 70 to 98% in moles of oxygen and less than 2% in moles of argon.
  • the syngas production unit produces synthesis gas which is separated into a part enriched in hydrogen intended for the synthesis of ammonia.
  • the impurities in impure oxygen are essentially nitrogen which will take part in the synthesis reaction ammonia.
  • the air is compressed to 6 bars in a compressor 1, is cooled in 3 and purified in water and carbon dioxide and hydrocarbons in the beds adsorbent 5. The air is then divided into three fractions. The first fraction 6 is cooled to its dew temperature in the exchanger 13 and sent to the medium pressure column 15 of a double column 14.
  • the second fraction 8 is boosted by the booster 7 at 11 bars, cools in exchanger 13 and is sent to the bottom of a column of mixture 19.
  • the third fraction 10 is boosted by the booster 9 to 8 bars, is cooled in 13 and expanded in the blowing turbine 11 before to be sent to the low pressure column 17 of the double column.
  • the mixing column can be supplied to the tank by a flow withdrawn from the medium pressure column.
  • a flow rate of 99 mol% of oxygen is withdrawn from the bottom of the low pressure column 14, pressurized to 11.8 bar by pump 21 and sent at the head of the mixing column 19.
  • Impure oxygen gas flow 23 to 95 mol% oxygen, 4% nitrogen molars and 1 mol% argon is withdrawn at the top of the mixture and a flow 22 is drawn off at an intermediate level thereof and returned to the low pressure column.
  • a flow of liquid nitrogen is drawn off at the top of the middle column pressure, pressurized by the pump 25 and sent (at 26) to the exchanger 13 where it vaporizes.
  • Nitrogen can be compressed by a compressor.
  • the process also produces low pressure nitrogen 33 withdrawn at the head of the minaret in column 17. This nitrogen flow can be sent at the ammonia synthesis unit.
  • Impure nitrogen at low pressure is used to regenerate the beds adsorbents 5.
  • a liquid flow 31 is sent from the mixing column to the column low pressure 17 a few trays above the flow injection point 22 and the flow injection point 10.
  • FIG. 3 shows the steps of an ammonia production process according to the invention.
  • An apparatus for air separation by cryogenic distillation 1 produces oxygen containing less than 1% argon and pure nitrogen.
  • Oxygen is sent to unit 3 where hydrocarbons undergo a stage reforming or partial oxidation.
  • the synthesis gas mixture is separated in a PSA 5 and the hydrogen by 6 is sent to the synthesis of ammonia 7 produced in 8 using the nitrogen 9 produced by the separation 1.
  • Fraction 6 is sent to the medium pressure column 15 and the fraction 8 is compressed by compressor 7 with n stages.
  • Fraction 10 is compressed by at most n-1 compressor stages 8 and then by booster 49, cooled in 13 and slackened in a Claude 41 turbine before being sent to the column medium pressure.
  • the turbine 11, 41 can produce a flow which is at least partially liquid.
  • the mixing column can operate at between 2 and 30 bar. She can operate at the same pressure as the low pressure column or at a pressure above or below this value.
  • Figures 1, 2 and 4 can obviously include a argon column fed from the low pressure column.

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)
EP99402116A 1998-08-28 1999-08-25 Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation Withdrawn EP0982554A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9810813A FR2782787B1 (fr) 1998-08-28 1998-08-28 Procede et installation de production d'oxygene impur par distillation d'air
FR9810813 1998-08-28

Publications (1)

Publication Number Publication Date
EP0982554A1 true EP0982554A1 (de) 2000-03-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99402116A Withdrawn EP0982554A1 (de) 1998-08-28 1999-08-25 Verfahren und Anlage zur Herstellung von unreinem Sauerstoff durch Rektifikation

Country Status (4)

Country Link
US (1) US6247333B1 (de)
EP (1) EP0982554A1 (de)
JP (1) JP2000203827A (de)
FR (1) FR2782787B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7238215B2 (en) 2000-12-27 2007-07-03 L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Integrated process and installation for the production of synthesis gas
EP3557166A1 (de) 2018-04-19 2019-10-23 Linde Aktiengesellschaft Verfahren zur tieftemperaturzerlegung von luft und luftzerlegungsanlage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861841B1 (fr) * 2003-11-04 2006-06-30 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
FR2862128B1 (fr) * 2003-11-10 2006-01-06 Air Liquide Procede et installation de fourniture d'oxygene a haute purete par distillation cryogenique d'air

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367428A1 (de) * 1988-10-15 1990-05-09 The BOC Group plc Lufttrennung
EP0531182A1 (de) * 1991-08-07 1993-03-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken
EP0562893A1 (de) * 1992-03-24 1993-09-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Apparat zur Herstellung von Hochdruck-Stickstoff und Sauerstoff
EP0636845A1 (de) * 1993-04-30 1995-02-01 The BOC Group plc Lufttrenung
US5704228A (en) * 1995-03-15 1998-01-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for the evaporation of a liquid flow
US5775128A (en) * 1997-05-02 1998-07-07 Praxair Technology, Inc. Process for producing ammonia and recovering argon using low purity oxygen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863707A (en) * 1982-09-30 1989-09-05 Engelhard Corporation Method of ammonia production
US5740673A (en) * 1995-11-07 1998-04-21 Air Products And Chemicals, Inc. Operation of integrated gasification combined cycle power generation systems at part load
US5666823A (en) * 1996-01-31 1997-09-16 Air Products And Chemicals, Inc. High pressure combustion turbine and air separation system integration

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367428A1 (de) * 1988-10-15 1990-05-09 The BOC Group plc Lufttrennung
EP0531182A1 (de) * 1991-08-07 1993-03-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken
EP0562893A1 (de) * 1992-03-24 1993-09-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Apparat zur Herstellung von Hochdruck-Stickstoff und Sauerstoff
EP0636845A1 (de) * 1993-04-30 1995-02-01 The BOC Group plc Lufttrenung
US5704228A (en) * 1995-03-15 1998-01-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for the evaporation of a liquid flow
US5775128A (en) * 1997-05-02 1998-07-07 Praxair Technology, Inc. Process for producing ammonia and recovering argon using low purity oxygen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7238215B2 (en) 2000-12-27 2007-07-03 L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Integrated process and installation for the production of synthesis gas
EP3557166A1 (de) 2018-04-19 2019-10-23 Linde Aktiengesellschaft Verfahren zur tieftemperaturzerlegung von luft und luftzerlegungsanlage
US11602713B2 (en) 2018-04-19 2023-03-14 Linde Aktiengesellschaft Method for cryogenic separation of air, and air separation plant

Also Published As

Publication number Publication date
JP2000203827A (ja) 2000-07-25
FR2782787A1 (fr) 2000-03-03
US6247333B1 (en) 2001-06-19
FR2782787B1 (fr) 2000-09-29

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