EP0611218B1 - Verfahren und Anlage zur Herstellung von Drucksauerstoff - Google Patents

Verfahren und Anlage zur Herstellung von Drucksauerstoff Download PDF

Info

Publication number
EP0611218B1
EP0611218B1 EP94400300A EP94400300A EP0611218B1 EP 0611218 B1 EP0611218 B1 EP 0611218B1 EP 94400300 A EP94400300 A EP 94400300A EP 94400300 A EP94400300 A EP 94400300A EP 0611218 B1 EP0611218 B1 EP 0611218B1
Authority
EP
European Patent Office
Prior art keywords
pressure
air
component
column
high pressure
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
Application number
EP94400300A
Other languages
English (en)
French (fr)
Other versions
EP0611218B2 (de
EP0611218A1 (de
Inventor
Maurice Grenier
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9444023&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0611218(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0611218A1 publication Critical patent/EP0611218A1/de
Application granted granted Critical
Publication of EP0611218B1 publication Critical patent/EP0611218B1/de
Publication of EP0611218B2 publication Critical patent/EP0611218B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F25J3/04084—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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed 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
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04024—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of purified feed air, so-called boosted 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
    • F25J3/0409—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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04145—Mechanically coupling of different compressors of the air fractionation process to the same driver(s)
    • 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
    • F25J3/042—Division of the main heat exchange line in consecutive sections having different functions having an intermediate feed connection
    • 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
    • F25J3/04236—Integration of different exchangers in a single core, so-called integrated cores
    • 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
    • F25J3/04278—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using external refrigeration units, e.g. closed mechanical or regenerative refrigeration units
    • 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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • 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
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
    • 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
    • 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
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • 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
    • 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
    • F25J2290/62—Details of storing a fluid in a tank
    • 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
    • Y10S62/912—External refrigeration system
    • Y10S62/913—Liquified gas
    • 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

Definitions

  • EP-A-0 504 029 describes a method of this type in which the fraction of air that is overpressed at the second high pressure is constituted by a very low air flow, the only function of which is to provide calories near intake temperature of the turbine which relaxes the fraction of air not overpressed.
  • the object of the invention is to improve this known process in order to increase performance thermodynamics without increasing the corresponding investment.
  • the subject of the invention is a process of the aforementioned type, characterized by the part Characterizing of claim 1.
  • the air distillation system shown in Figure 1 essentially comprises: a air compressor 1; an air cleaning device 2 compressed into water and C02 by adsorption, this device comprising two adsorption bottles 2A, 2B, one of which works in adsorption while the other is in progress regeneration; a fan-blower assembly 3 comprising an expansion turbine 4 and a blower or blower 5 whose shafts are coupled, the blower possibly being equipped with a refrigerant (not represented); a heat exchanger 6 constituting the installation heat exchange line; a double distillation column 7 comprising a medium column pressure 8 surmounted by a low pressure column 9, with a vaporizer-condenser 10 putting the overhead vapor (nitrogen) from column 8 in heat exchange relationship with the tank liquid (oxygen) of column 9; a liquid oxygen tank 11, the bottom of which is connected to a liquid oxygen pump 12; and a nitrogen tank liquid 13, the bottom of which is connected to a nitrogen pump liquid 14.
  • This facility is intended to provide, via a line 15, gaseous oxygen under a high predetermined pressure, which can be between a few bars and a few dozen bars (in the present brief, the pressures considered are absolute pressures).
  • liquid oxygen drawn from the column 9 tank via line 16 and stored in the reservoir 11 is brought to high pressure by the pump 12 in the liquid state, then vaporized and reheated under this high pressure in passages 17 of the exchanger 6.
  • the heat necessary for this vaporization and to this reheating, as well as to reheating and possibly vaporization of other fluids drawn from the double column, is supplied by the air to be distilled, in the following conditions.
  • All of the air to be distilled is compressed by compressor 1 at a first high pressure significantly higher than the average column pressure 8, in practice greater than 9 bars. Then the air, precooled in 18 and cooled to around temperature room in 19, is purified in one, 2A for example, adsorption bottles, and divided into two fractions.
  • the first fraction representing at least 70% of the treated air flow, is boosted a second time high pressure by the booster 5, which is driven by the turbine 4.
  • the first fraction of air is then introduced at the hot end of the exchanger 6 and cooled in all up to an intermediate temperature. At this temperature, a fraction of the air continues to cool and is liquefied in passages 20 of the exchanger and then is relaxed at low pressure in an expansion valve 21 and introduced at a level intermediate in column 9. The rest of the air is expanded at medium pressure in turbine 4 then sent directly, via a line 22, to the base of the column 8.
  • the second fraction is introduced under the first high pressure in exchange line 6, cooled and liquefied to the cold end of it in passages 20A, expanded in an expansion valve 21A and connected to the current from the expansion valve 21.
  • this air pressure is the condensation pressure of the air by exchange of heat with oxygen being vaporized under the high pressure, i.e. the pressure for which the knee G of liquefaction of one of the two fractions of air, on the heat exchange diagram (temperatures on the abscissa, quantities of heat exchanged on the ordinate) is located slightly to the right of the vertical landing P of vaporization of oxygen under high pressure ( Figure 2).
  • the temperature difference at the hot end of the exchange line is adjusted by means of turbine 4, of which the suction temperature is indicated in A.
  • the diagram in Figure 2 corresponds to following numerical values: first high pressure : 24.5 bars; high oxygen pressure: 10 bars; second high pressure: 31 bars; second fraction of air: 28% incoming flow; fraction liquefied in 20: very low; liquid production: 40% of the amount of oxygen separate.
  • the diagram in Figure 3 corresponds to following numerical values: first high pressure: 28.5 bars; purification temperature: + 12 ° C; second air fraction: 11% of the incoming flow; second high pressure: 36.4 bars; fraction relaxed in 4 to 5.7 bars: 77% of the incoming flow; liquefied fraction in 20: 12% of incoming air flow; high oxygen pressure: 40 bars; liquid production: 35% of the amount of oxygen separate.
  • the air from of the turbine 4 is sent to a separator pot 35.
  • the resulting liquid phase is sent directly to the column 8, while the gas phase is, after partial heating in the heat exchange line, expanded at low pressure in a second turbine 36 fitted with an appropriate brake 37, then blown into the column 9.
  • This variant allows either to produce impure oxygen under good energy conditions thanks to the increased production of liquid which results from the presence of the second turbine, i.e. increase liquid production at the expense of amount of oxygen separated, or producing only liquid oxygen.
  • an air flow can be taken between the precooler 38 and blower 5 and sent via a line 39 in other passages 20B of the line heat exchange, therefore at a pressure intermediate between the first and second highs pressures.
  • the installation can generate gaseous oxygen and / or nitrogen gas under at least two different pressures, as explained in the aforementioned EP-A-0 504 029.
  • blower 5 Possibly a small part of the air from blower 5 can be overpressed again by a second blower (not shown), for example coupled to the turbine 36 of Figure 5, before being cooled and liquefied in the heat exchange line, according to the teaching of the request FR 91 15 935.

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)

Claims (10)

  1. Verfahren zur Erzeugung von gasförmigem Sauerstoff unter einem hohen Sauerstoffdruck durch Destillation von Luft in einer Doppelsäulenanlage (7), die eine unter einem sogenannten Mitteldruck arbeitende Mitteldrucksäule (8) und eine unter einem sogenannten Niederdruck arbeitende Niederdrucksäule (9) aufweist, Pumpen (bei 12) von aus der Wanne der Niederdrucksäule (9) abgezogenem flüssigem Sauerstoff und Verdampfung (bei 6) des verdichteten flüssigen Sauerstoffs durch Wärmeaustausch mit Luft in einer Wärmeaustauschstrecke (6) der Anlage, Verfahren, in dem man
    die gesamte zu destillierende Luft mit Hilfe eines Hauptluftverdichters (1) der Anlage auf einen ersten Hochdruck verdichtet, der deutlich höher als der Mitteldruck ist, und in eine erste und eine zweite Fraktion teilt,
    die erste Fraktion auf einen zweiten Hochdruck nachverdichtet und
    mindestens den wesentlichen Teil der ersten Fraktion in der Wärmeaustauschstrecke auf eine Zwischentemperatur kühlt, bei der ein Teil in einer ersten Turbine (4) auf den Mitteldruck entspannt wird und dann in die Mitteldrucksäule (8) eingeführt wird, während der Rest weiter gekühlt und verflüssigt wird, in einem Druckminderventil (21) entspannt wird und in die Doppelsäule (7) engeführt wird,
    dadurch gekennzeichnet, daß die erste Fraktion mindestens 70% des behandelten Luftdurchsatzes darstellt und daß man die zweite Fraktion in einem oder mehreren Strömen bei dem ersten Hochdruck oder bei einem oder mehreren Drücken, die zwischen dem ersten Hochdruck und dem zweiten Hochdruck liegen, kühlt und verflüssigt und nach Entspannung in einem Druckminderventil (21A) in die Doppelsäule einführt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die gasförmige Fraktion der von der ersten Turbine (4) kommenden Luft in einer zweiten Turbine (36) auf den Niederdruck entspannt, wobei diese gasförmige Fraktion vor ihrer Entspannung in der zweiten Turbine teilweise erwärmt wird und der Abgang dieser Turbine ggf. nach Kühlung in die Niederdrucksäule (9) eingeblasen wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man die Luft mit Hilfe nur eines Teils der Stufen des Luftverdichters (1) auf den ersten Hochdruck bringt, die Luft bei diesem ersten Hochdruck von Wasser und Kohlendioxid reinigt (bei 2) und dann die erste Fraktion mit Hilfe der letzten Stufe oder Stufen dieses Verdichters verdichtet.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß man mindestens einen Teil der aus der letzten Stufe des Verdichters (1) austretenden Luft mit Hilfe eines mit der ersten Turbine (4) gekoppelten Gebläses (5) nachverdichtet.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß man die zweite Fraktion mit Hilfe einer Kühlanlage (6A) vorkühlt, bevor sie in die Wärmeaustauschstrecke (6) eingeführt wird.
  6. Anlage zur Herstellung von gasförmigem Sauerstoff unter einem hohem Sauerstoffdruck, die folgendes umfaßt: einen Hauptluftverdichter (1), eine doppelte Luftdestillationssäule (7), die eine unter einem sogenannten Mitteldruck arbeitende Mitteldrucksäule (8) und eine unter einem sogenannten Niederdruck arbeitende Niederdrucksäule (9) umfaßt, eine Pumpe (12) zur Verdichtung des aus der Wanne der Niederdrucksäule (9) abgezogenen flüssigen Sauerstoffs, Einrichtungen (1, 5), um eine Fraktion der zu destillierenden Luft auf einen hohen Luftdruck zu bringen, und eine Wärmeaustauschstrecke (6), dadurch gekennzeichnet,
    daß diese Einrichtungen so ausgebildet sind, daß sie die gesamte zu destillierende Luft auf einen ersten Hochdruck bringen, der deutlich höher als der Mitteldruck ist, und Einrichtungen (5) zum Nachverdichten einer ersten Fraktion dieser Luft, die mindestens 70% des behandelten Luftdurchsatzes darstellt, auf einen zweiten Hochdruck aufweisen,
    daß die Wärmeaustauschstrecke (6) Einrichtungen zum Kühlen der ersten Fraktion auf eine Zwischentemperatur und zum weiteren Kühlen und Verflüssigen eines Teils dieser ersten Fraktion aufweist, sowie Einrichtungen (20A, 20B) zum Kühlen und Verflüssigen der nicht auf den zweiten Hochdruck nachverdichteten Luft in einem oder mehreren Strömen auf den ersten Hochdruck oder auf einen oder mehrere zwischen dem ersten und dem zweiten Hochdruck liegende Drücke, und
    daß die Anlage eine Entspannungsturbine (4) aufweist, deren Saugseite mit den Durchgängen zum Kühlen der Luft bei dem zweiten Hochdruck mit einem Punkt in der Mitte der Wärmeaustauschstrecke (6) verbunden ist und deren Austrittsseite mit der Mitteldrucksäule (8) verbunden ist.
  7. Anlage nach Anspruch 6, dadurch gekennzeichnet, daß sie eine zweite Turbine (36) zur Entspannung mindestens eines Teils der aus der ersten Turbine (4) austretenden Luft auf den Niederdruck aufweist.
  8. Anlage nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die zweite Fraktion von einer Zwischenstufe des Hauptluftverdichters (1) kommt, wobei die erste Fraktion nach Reinigung von Wasser und Kohlendioxid (bei 2) in diesen Verdichter wieder eingeleitet wird.
  9. Anlage nach Anspruch 8, dadurch gekennzeichnet, daß sie ein mit der ersten Turbine (4) gekoppeltes Gebläse (5) aufweist, dessen Saugseite mit der Druckseite der letzten Stufe des Hauptluftverdichters (1) verbunden ist.
  10. Anlage nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß sie eine Kühlanlage (6A) zum Vorkühlen der zweiten Luftfraktion vor der Wärmeaustauschstrecke (6) aufweist.
EP94400300A 1993-02-12 1994-02-11 Verfahren und Anlage zur Herstellung von Drucksauerstoff Expired - Lifetime EP0611218B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9301622 1993-02-12
FR9301622A FR2701553B1 (fr) 1993-02-12 1993-02-12 Procédé et installation de production d'oxygène sous pression.

Publications (3)

Publication Number Publication Date
EP0611218A1 EP0611218A1 (de) 1994-08-17
EP0611218B1 true EP0611218B1 (de) 1998-11-04
EP0611218B2 EP0611218B2 (de) 2002-08-07

Family

ID=9444023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400300A Expired - Lifetime EP0611218B2 (de) 1993-02-12 1994-02-11 Verfahren und Anlage zur Herstellung von Drucksauerstoff

Country Status (10)

Country Link
US (1) US5426947A (de)
EP (1) EP0611218B2 (de)
JP (1) JPH06241650A (de)
CN (1) CN1101924C (de)
AU (1) AU660385B2 (de)
CA (1) CA2115399C (de)
DE (1) DE69414282T3 (de)
ES (1) ES2124856T5 (de)
FR (1) FR2701553B1 (de)
ZA (1) ZA94968B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012017488A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815885A1 (de) * 1998-04-08 1999-10-14 Linde Ag Verfahren und Vorrichtung zur Erzeugung von gasförmigem Druckprodukt bei der Tieftemperaturzerlegung von Luft
FR2782544B1 (fr) * 1998-08-19 2005-07-08 Air Liquide Pompe pour un liquide cryogenique ainsi que groupe de pompage et colonne de distillation equipes d'une telle pompe
FR2828273A1 (fr) * 2001-07-31 2003-02-07 Air Liquide Procede d'alimentation en air epure d'une unite de distillation d'air cryogenique et installation de mise en oeuvre de ce procede
US7437890B2 (en) * 2006-01-12 2008-10-21 Praxair Technology, Inc. Cryogenic air separation system with multi-pressure air liquefaction
US7487648B2 (en) * 2006-03-10 2009-02-10 Praxair Technology, Inc. Cryogenic air separation method with temperature controlled condensed feed air
FR2928446A1 (fr) * 2008-03-10 2009-09-11 Air Liquide Procede de modification d'un appareil de separation d'air par distillation cryogenique
DE102009048456A1 (de) * 2009-09-21 2011-03-31 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461906A1 (fr) * 1979-07-20 1981-02-06 Air Liquide Procede et installation cryogeniques de separation d'air avec production d'oxygene sous haute pression
JPS62102074A (ja) * 1985-10-30 1987-05-12 株式会社日立製作所 ガス分離方法及び装置
FR2652409A1 (fr) † 1989-09-25 1991-03-29 Air Liquide Procede de production frigorifique, cycle frigorifique correspondant et leur application a la distillation d'air.
US5148680A (en) † 1990-06-27 1992-09-22 Union Carbide Industrial Gases Technology Corporation Cryogenic air separation system with dual product side condenser
FR2674011B1 (fr) * 1991-03-11 1996-12-20 Maurice Grenier Procede et installation de production d'oxygene gazeux sous pression.
JP2909678B2 (ja) * 1991-03-11 1999-06-23 レール・リキード・ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード 圧力下のガス状酸素の製造方法及び製造装置
FR2695714B1 (fr) † 1992-09-16 1994-10-28 Maurice Grenier Installation de traitement cryogénique, notamment de distillation d'air.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012017488A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren

Also Published As

Publication number Publication date
FR2701553A1 (fr) 1994-08-19
ES2124856T3 (es) 1999-02-16
CN1100514A (zh) 1995-03-22
DE69414282T2 (de) 1999-06-17
DE69414282T3 (de) 2003-03-20
ES2124856T5 (es) 2003-03-01
CA2115399C (fr) 2005-04-26
FR2701553B1 (fr) 1995-04-28
CN1101924C (zh) 2003-02-19
ZA94968B (en) 1994-08-24
CA2115399A1 (fr) 1994-08-13
DE69414282D1 (de) 1998-12-10
US5426947A (en) 1995-06-27
EP0611218B2 (de) 2002-08-07
AU5506094A (en) 1994-08-18
JPH06241650A (ja) 1994-09-02
AU660385B2 (en) 1995-06-22
EP0611218A1 (de) 1994-08-17

Similar Documents

Publication Publication Date Title
EP0504029B1 (de) Verfahren zur Herstellung von gasförmigem Sauerstoff unter Druck
EP0576314B2 (de) Verfahren und Apparat zur Herstelling von gasförmigem Sauerstoff unter Druck
EP0689019B1 (de) Verfahren und Einrichtung zur Herstellung von gasförmigem Drucksauerstoff
EP0628778B2 (de) Verfahren und Hochdruckgasversorgungseinheit für eine ein Luftbestandteil verbrauchende Anlage
EP0562893B2 (de) Verfahren zur Herstellung von Hochdruck-Stickstoff und Sauerstoff
EP0420725A1 (de) Kühlverfahren, der angewandte Kühlkreislauf und seine Anwendung in der Lufttrennung
EP0618415B1 (de) Verfahren und Vorrichtung zur Herstellung von gasförmigem Sauerstoff und/oder gasförmigem Stickstoff unter Druck durch Zerlegung von Luft
FR2757282A1 (fr) Procede et installation de fourniture d'un debit variable d'un gaz de l'air
EP0547946A1 (de) Verfahren und Apparat zur Herstellung unreinen Sauerstoffs
EP0694746B1 (de) Verfahren zur Herstellung von Druckgas mit variabelen Mengen
EP0789208A1 (de) Verfahren und Einrichtung zur Herstellung von gasförmigem Sauerstoff unter hohe Druck
EP0605262A1 (de) Druckgassauerstoffherstellungsverfahren und Apparat
EP0611936B1 (de) Verfahren und Anlage zur Herstellung von ultrareinem Stickstoff durch Luftdestillation
EP0611218B1 (de) Verfahren und Anlage zur Herstellung von Drucksauerstoff
EP0641983B1 (de) Verfahren und Einrichtung zur Herstellung von gasförmigem Sauerstoff und/oder Stickstoff unter Druck
EP0914584B1 (de) Verfahren und einrichtung zur herstellung eines luftgases mit variablen mengen
EP0677713B1 (de) Verfahren und Vorrichtung zur Herstellung von Sauerstoff durch Rektifikation von Luft
EP0595673B1 (de) Verfahren und Anlage zur Herstellung von Stickstoff und Sauerstoff
EP0612967B1 (de) Verfahren zur Herstellung von Sauerstoff und/oder Stickstoff unter Druck
EP0641982B1 (de) Verfahren und Einrichtung zur Herstellung von wenigstens einem durch Zerlegung von Luft gewonnenem Gas unter Druck
FR2674011A1 (fr) Procede et installation de production d'oxygene gazeux sous pression.
FR2685460A1 (fr) Procede et installation de production d'oxygene gazeux sous pression par distillation d'air.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19940216

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT NL SE

17Q First examination report despatched

Effective date: 19960118

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 69414282

Country of ref document: DE

Date of ref document: 19981210

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981209

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2124856

Country of ref document: ES

Kind code of ref document: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: LINDE AKTIENGESELLSCHAFT

Effective date: 19990803

NLR1 Nl: opposition has been filed with the epo

Opponent name: LINDE AKTIENGESELLSCHAFT

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR

27A Patent maintained in amended form

Effective date: 20020807

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): BE DE ES FR GB IT NL SE

NLR2 Nl: decision of opposition
GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Date of ref document: 20021106

Kind code of ref document: T5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080212

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080122

Year of fee payment: 15

Ref country code: GB

Payment date: 20080118

Year of fee payment: 15

Ref country code: DE

Payment date: 20080118

Year of fee payment: 15

Ref country code: SE

Payment date: 20080121

Year of fee payment: 15

Ref country code: NL

Payment date: 20080118

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080114

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080208

Year of fee payment: 15

BERE Be: lapsed

Owner name: S.A. L'*AIR LIQUIDE POUR L'ETUDE ET L'EXPLOITATION

Effective date: 20090228

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090211

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20090901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090211

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090211

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090212

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090302