EP0611218A1 - Verfahren und Anlage zur Herstellung von Drucksauerstoff - Google Patents

Verfahren und Anlage zur Herstellung von Drucksauerstoff Download PDF

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Publication number
EP0611218A1
EP0611218A1 EP94400300A EP94400300A EP0611218A1 EP 0611218 A1 EP0611218 A1 EP 0611218A1 EP 94400300 A EP94400300 A EP 94400300A EP 94400300 A EP94400300 A EP 94400300A EP 0611218 A1 EP0611218 A1 EP 0611218A1
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EP
European Patent Office
Prior art keywords
air
pressure
fraction
column
turbine
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.)
Granted
Application number
EP94400300A
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English (en)
French (fr)
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EP0611218B1 (de
EP0611218B2 (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
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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(A1) "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
Publication of EP0611218B1 publication Critical patent/EP0611218B1/de
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Publication of EP0611218B2 publication Critical patent/EP0611218B2/de
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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)
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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.
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    • 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
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    • 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
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    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
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    • 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
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    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
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    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
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    • 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
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    • 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

  • the present invention relates to a process for the production of gaseous oxygen under a high oxygen pressure by air distillation in a double column installation comprising a medium pressure column which operates under a so-called medium pressure, and a low column. pressure which operates under a pressure known as low pressure, pumping of liquid oxygen withdrawn from the bottom of the low pressure column, and vaporization of the compressed liquid oxygen by heat exchange with air in the heat exchange line of the 'installation.
  • FR-A-2 674 011 describes a process of this type in which all of the air is brought to a single high pressure, then is cooled and partially turbined at medium pressure.
  • the object of the invention is to improve this known process so as to increase its thermodynamic performance without increasing the corresponding investment.
  • the air distillation installation shown in Figure 1 essentially comprises: an air compressor 1; an apparatus 2 for purifying the compressed air into water and CO2 by adsorption, this apparatus comprising two adsorption bottles 2A, 2B, one of which operates in adsorption while the other is being regenerated; a turbine-blower assembly 3 comprising an expansion turbine 4 and a blower or blower 5 whose shafts are coupled, the blower being optionally equipped with a refrigerant (not shown); a heat exchanger 6 constituting the heat exchange line of the installation; a double distillation column 7 comprising a medium pressure column 8 surmounted by a low pressure column 9, with a vaporizer-condenser 10 putting the overhead vapor (nitrogen) from column 8 in heat exchange relation with the tank liquid (oxygen) from column 9; a liquid oxygen tank 11, the bottom of which is connected to a liquid oxygen pump 12; and a liquid nitrogen tank 13, the bottom of which is connected to a liquid nitrogen pump 14.
  • This installation is intended to supply, via a pipe 15, gaseous oxygen under a predetermined high pressure, which can be between a few bars and a few tens of bars (in the present specification, the pressures considered are absolute pressures).
  • liquid oxygen withdrawn from the tank of the column 9 via a pipe 16 and stored in the tank 11, is brought to high pressure by the pump 12 in the liquid state, then vaporized and heated under this high pressure in passages 17 of exchanger 6.
  • the heat necessary for this vaporization and this reheating, as well as for the reheating and possibly for the vaporization of other fluids drawn from the double column, is supplied by the air to be distilled, under the following conditions.
  • All of the air to be distilled is compressed by compressor 1 at a first high pressure markedly higher than the medium pressure of column 8, in practice greater than 9 bars. Then the air, precooled in 18 and cooled to around room temperature 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 flow of treated air, is boosted at a second 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 completely cooled to an intermediate temperature. At this temperature, a fraction of the air continues to cool and is liquefied in passages 20 of the exchanger, then is expanded at low pressure in an expansion valve 21 and introduced at a level intermediate in column 9. The rest of the air is expanded to medium pressure in turbine 4 and then sent directly, via a line 22, to the base of column 8.
  • the second fraction optionally precooled to -40 ° C by a refrigeration unit 6A indicated in phantom, is introduced under the first high pressure into the exchange line 6, cooled and liquefied until the cold end thereof in passages 20A, expanded in an expansion valve 21A and joined to the current coming from the expansion valve 21.
  • the low-pressure nitrogen is heated in passages 28 of the exchanger 6 and then recovered via a pipe 29, while the residual gas, after heating in passages 30 of the exchanger, is used to regenerate an adsorption bottle, the bottle 2B in the example considered, before being evacuated via a pipe 31.
  • part of the medium pressure liquid nitrogen is, after expansion in an expansion valve 32, stored in the tank 13, and that a production of liquid nitrogen and / or liquid oxygen is supplied via a pipe 33 (for nitrogen) and / or 34 (for oxygen).
  • this air pressure is the pressure of condensation of the air by heat exchange with the oxygen being vaporized under the high pressure, i.e. - say the pressure for which the knee G of liquefaction of one of the two air fractions, 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 bearing P vaporization of oxygen under high pressure ( Figure 2).
  • the temperature difference at the hot end of the exchange line is adjusted by means of the turbine 4, the suction temperature of which is indicated in A.
  • the diagram in Figure 2 corresponds to the 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 separated.
  • the diagram in Figure 3 corresponds to the following numerical values: first high pressure: 28.5 bars; purification temperature: + 12 ° C; second fraction of air: 11% of the incoming flow; second high pressure: 36.4 bars; fraction expanded in 4 to 5.7 bars: 77% of the incoming flow; liquefied fraction in 20: 12% of the incoming air flow; high oxygen pressure: 40 bars; liquid production: 35% of the amount of oxygen separated.
  • the air from 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 column 9.
  • This variant allows either to produce impure oxygen under good energy conditions thanks to the increase in the production of liquid which results from the presence of the second turbine, namely to increase the production of liquid at the expense of the quantity of oxygen separated, or to produce only liquid oxygen.
  • FIG. 6 illustrates another variant in which the first high pressure is that of the penultimate stage of the main compressor 1.
  • the air is divided into two fractions as before.
  • the first fraction is reintroduced at the suction of the last stage of the compressor 1, and comes out at a higher pressure.
  • this air is boosted at the second high pressure at 5 and is then treated as explained above.
  • the second fraction of air is directly introduced into the passages 20A of the heat exchange line.
  • an air flow can be taken between the precooler 38 and the blower 5 and sent via a pipe 39 in other passages 20B of the heat exchange line, therefore at an intermediate pressure between the first and second high pressures.
  • the installation can produce, in addition to the low pressure nitrogen gas coming directly from the head of the column 9 and the high pressure oxygen gas, nitrogen gas under pressure, obtained by vaporization in the heat exchange line of a flow of liquid nitrogen taken from the pipe 33.
  • This nitrogen vaporization can in particular be carried out by condensation of the air contained in the passages 20, 20A or 20B.
  • the installation can produce gaseous oxygen and / or nitrogen gas under at least two different pressures, as explained in the aforementioned FR-A-2 674 011.
  • a small part of the air from the blower 5 can be again pressurized by a second blower (not shown), for example coupled to the turbine 36 of Figure 5, before being cooled and liquefied in the line heat exchange, following the teaching of the request FR 91 15 935.

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  • 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)
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
FR9301622A FR2701553B1 (fr) 1993-02-12 1993-02-12 Procédé et installation de production d'oxygène sous pression.
FR9301622 1993-02-12

Publications (3)

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

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ID=9444023

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EP94400300A Expired - Lifetime EP0611218B2 (de) 1993-02-12 1994-02-11 Verfahren und Anlage zur Herstellung von Drucksauerstoff

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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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2928446A1 (fr) * 2008-03-10 2009-09-11 Air Liquide Procede de modification d'un appareil de separation d'air par distillation cryogenique

Families Citing this family (6)

* 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
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
DE102009048456A1 (de) * 2009-09-21 2011-03-31 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
DE102012017488A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504029A1 (de) * 1991-03-11 1992-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zur Herstellung von gasförmigem Sauerstoff unter Druck

Family Cites Families (6)

* 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.
FR2695714B1 (fr) † 1992-09-16 1994-10-28 Maurice Grenier Installation de traitement cryogénique, notamment de distillation d'air.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504029A1 (de) * 1991-03-11 1992-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zur Herstellung von gasförmigem Sauerstoff unter Druck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2928446A1 (fr) * 2008-03-10 2009-09-11 Air Liquide Procede de modification d'un appareil de separation d'air par distillation cryogenique

Also Published As

Publication number Publication date
ZA94968B (en) 1994-08-24
CN1101924C (zh) 2003-02-19
EP0611218B1 (de) 1998-11-04
AU660385B2 (en) 1995-06-22
CA2115399A1 (fr) 1994-08-13
DE69414282T2 (de) 1999-06-17
CN1100514A (zh) 1995-03-22
ES2124856T3 (es) 1999-02-16
AU5506094A (en) 1994-08-18
JPH06241650A (ja) 1994-09-02
FR2701553A1 (fr) 1994-08-19
FR2701553B1 (fr) 1995-04-28
DE69414282T3 (de) 2003-03-20
EP0611218B2 (de) 2002-08-07
CA2115399C (fr) 2005-04-26
DE69414282D1 (de) 1998-12-10
ES2124856T5 (es) 2003-03-01
US5426947A (en) 1995-06-27

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