EP0789208B1 - Procédé et installation de production d'oxygène gazeux sous haute pression - Google Patents

Procédé et installation de production d'oxygène gazeux sous haute pression Download PDF

Info

Publication number
EP0789208B1
EP0789208B1 EP97400222A EP97400222A EP0789208B1 EP 0789208 B1 EP0789208 B1 EP 0789208B1 EP 97400222 A EP97400222 A EP 97400222A EP 97400222 A EP97400222 A EP 97400222A EP 0789208 B1 EP0789208 B1 EP 0789208B1
Authority
EP
European Patent Office
Prior art keywords
air
pressure
column
liquid
approximately
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
EP97400222A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0789208A1 (fr
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 a Directoire et Conseil de Surveillance 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 a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0789208A1 publication Critical patent/EP0789208A1/fr
Application granted granted Critical
Publication of EP0789208B1 publication Critical patent/EP0789208B1/fr
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
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/0423—Subcooling of liquid process streams
    • 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
    • F25J3/04375—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
    • F25J3/04406—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
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
    • F25J3/04727—Producing pure argon, e.g. recovered from a crude argon column using an auxiliary pure argon column for nitrogen rejection
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
    • F25J3/04733—Producing pure argon, e.g. recovered from a crude argon column using a hybrid system, e.g. using adsorption, permeation or catalytic reaction
    • F25J3/04739—Producing pure argon, e.g. recovered from a crude argon column using a hybrid system, e.g. using adsorption, permeation or catalytic reaction in combination with an auxiliary pure argon 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
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04781—Pressure changing devices, e.g. for compression, expansion, liquid pumping
    • 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
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
    • F25J2240/10—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream the fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/50—One fluid being oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/52—One fluid being oxygen enriched compared to air, e.g. "crude oxygen"
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/939—Partial feed stream expansion, air
    • Y10S62/94—High pressure column

Definitions

  • the present invention relates to a process for producing gaseous oxygen under high pressure at least about 30 bars.
  • the invention applies in particular to the production of large quantities, typically of at least 500 tonnes per day of oxygen gas under high pressure.
  • the pressures in question are absolute pressures.
  • pump processes Many processes for pumping and vaporizing liquid oxygen, called “pump processes” have been proposed (see in particular EP-A-0672878), and the invention has intended to provide a process of the same type that is particularly advantageous from the point of view of spent specific energy.
  • This process can include one or more features of claims 2 to 7.
  • the invention also relates to a installation according to claim 8, intended for the implementation of a method as defined above.
  • the installation includes a heat exchanger additional heat to sub-cool the liquid withdrawn from the tank of the medium pressure column by vaporization of liquid oxygen withdrawn from the tank of the low pressure column.
  • the installation shown in Figure 1 is intended to produce gaseous oxygen under a pressure at least equal to approximately 30 bars.
  • She basically includes a double column of distillation 1, a heat exchange line main 2 consisting of at least one body of brazed clad type exchanger, a sub-cooler 3, an air compressor 4, a device 5 purification by adsorption of air into water and CO2, a first air booster 6, a second air booster 7, an expansion turbine 8 and a pump liquid oxygen 9.
  • the double column consists, conventionally, a medium pressure column 10 operating under approximately 5 to 6 bars and overcome a low pressure column 11 operating slightly above atmospheric pressure, with, in the tank of the latter, a vaporizer-condenser 12 which relates to heat exchange liquid oxygen from the low pressure column tank with the top nitrogen of the medium pressure column.
  • the air to be distilled, fully compressed by compressor 4 on average pressure and purified in 5, is divided into two streams.
  • the first stream is cooled under this medium pressure in passages 13 of the line 20 which extend from the hot end to the end cold of it.
  • This medium pressure air comes out of the exchange line near its dew point and is introduced at the base of the middle column pressure 10.
  • the rest of the air coming out of the appliance 5 is overpressed in 6 to an intermediate pressure and is divided in turn into two streams.
  • the first flow, at this pressure intermediate, is cooled in passages 14 of the exchange line up to an intermediate temperature T1. Part of this flow eventually continues cooling, and is liquefied, to the cold end of the trade line and then is relaxed to the mean pressure in an expansion valve 15 and distributed in two currents: a first current sent to the base of column 10, and a second sub-cooled stream in 3, relaxed at low pressure in a valve trigger 16 and sent to column 11. The rest of the first stream came off the exchange line at the intermediate temperature T1, expanded in the turbine 6 at medium pressure and introduced at the base of the column 10.
  • the second compressed air flow is at again pressurized, up to a second high pressure of the order of 60 to 80 bars, by the booster 7, then cooled and liquefied in passages 17 of the line exchange, until the cold end of it.
  • the liquid thus obtained is expanded in an expansion valve 18 and combined with the liquefied current from the valve trigger 15.
  • Liquid oxygen drawn from the tank of the column 11 is brought by pump 9 to the high desired production pressure, then vaporized and heated in passages 18 of the exchange line before being evacuated from the installation via a pipe of production 19.
  • This impure nitrogen is heated in the sub-cooler 3 then in passages 28 of the line before being evacuated via a pipe 29.
  • the liquid air coming from the valves 15 and 18, the lean liquid and the rich liquid are sub-cooled, about 2 ° C for the liquid rich.
  • the exchange diagram should be of the exchange line 2 is also tightened as possible, this in order to approach conditions reversible heat exchange.
  • the enthalpies H are plotted on the abscissa and the temperatures on the ordinate, that the deviations of temperature between air being cooled (curve C1) and the products being heated (curve C2) are as low as possible at the end hot and cold end of the exchange line as well at the start of the oxygen vaporization stage 30.
  • turbines cryogenic have an input distributor followed of a wheel.
  • the distributor produces a first relaxation or enthalpy fall, which is a characteristic of the turbine.
  • the third condition above therefore makes it easy to determine the intermediate pressure, which is the pressure at which air must enter the turbine to be at the near its dew point at the entrance of the wheel. This intermediate pressure is between 30 and 40 bars approximately.
  • this flow rate D L could be canceled out if it were possible to choose a high air pressure clearly greater than 80 bars and, according to the calculation, of the order of 100 bars.
  • the mechanical energy produced by the turbine 8 is recovered to contribute to the drive of the booster 7, but the latter also has an external source of drive energy. If one wants, as a variant, to couple the turbine 8 and this booster, to simplify the installation, it is necessary to increase the intermediate pressure as well as the temperature T1, and the calculation shows that this leads to an increase in the flow rate D L as well as specific energy.
  • the air flows at the intermediate pressure and high pressure can represent around 20% and around 25%, respectively, of the treated air flow.
  • the tank of the column 31 is connected to the "argon tapping" of column 11 via two pipes 32 feed and 33 back while his head is equipped with a condenser 34 in which liquid rich, relaxed in 35 until near pressure atmospheric, is vaporized and then returned to the column 11 via a pipe 36.
  • the impure gas gas withdrawn at the head of column 31 via a pipe 37 is purified in 31A then 31B, and the pure argon is withdrawn installation in liquid form via a pipe of production 37A.
  • the sub-cooling of the rich liquid before its trigger in 21 and possibly in 35 can be made in an additional heat exchanger 38 vaporizing liquid oxygen drawn from the tank of the column 11. This makes it possible to sub-cool from 4 to 5 ° C. the large quantities of rich liquid circulating during the implementation of a "pump" process and therefore improve the extraction yield oxygen and, if applicable, argon.
  • the installation can also produce nitrogen gaseous under pressure, this nitrogen being taken in the state liquid in line 22, pumped under pressure desired by a pump 39, vaporized and then reheated in passages 40 of the exchange line 2, and withdrawn via a production line 41.
  • all or part of the liquid withdrawn can also consist of liquid nitrogen (line 25).
  • the liquid vaporized after pumping can be oxygen, nitrogen or argon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP97400222A 1996-02-12 1997-01-31 Procédé et installation de production d'oxygène gazeux sous haute pression Expired - Lifetime EP0789208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601698 1996-02-12
FR9601698A FR2744795B1 (fr) 1996-02-12 1996-02-12 Procede et installation de production d'oxygene gazeux sous haute pression

Publications (2)

Publication Number Publication Date
EP0789208A1 EP0789208A1 (fr) 1997-08-13
EP0789208B1 true EP0789208B1 (fr) 2003-03-12

Family

ID=9489096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400222A Expired - Lifetime EP0789208B1 (fr) 1996-02-12 1997-01-31 Procédé et installation de production d'oxygène gazeux sous haute pression

Country Status (10)

Country Link
US (1) US5735142A (ja)
EP (1) EP0789208B1 (ja)
JP (1) JPH09310970A (ja)
KR (1) KR100466917B1 (ja)
CN (1) CN1097715C (ja)
CA (1) CA2197156A1 (ja)
DE (1) DE69719578T2 (ja)
ES (1) ES2193336T3 (ja)
FR (1) FR2744795B1 (ja)
ZA (1) ZA971031B (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169900A1 (fr) 2019-02-21 2020-08-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation et procédé de séparation des gaz de l'air mettant en œuvre un adsorbeur de forme parallélépipédique
WO2020169901A1 (fr) 2019-02-21 2020-08-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation et procédé de séparation des gaz de l'air à basse pression
US12098883B2 (en) 2019-02-21 2024-09-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude System and method for separating air gases at low pressure

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5765396A (en) * 1997-03-19 1998-06-16 Praxair Technology, Inc. Cryogenic rectification system for producing high pressure nitrogen and high pressure oxygen
US5829271A (en) * 1997-10-14 1998-11-03 Praxair Technology, Inc. Cryogenic rectification system for producing high pressure oxygen
FR2776760B1 (fr) * 1998-03-31 2000-05-05 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
JP3715497B2 (ja) 2000-02-23 2005-11-09 株式会社神戸製鋼所 酸素の製造方法
US6253577B1 (en) 2000-03-23 2001-07-03 Praxair Technology, Inc. Cryogenic air separation process for producing elevated pressure gaseous oxygen
FR2854682B1 (fr) * 2003-05-05 2005-06-17 Air Liquide Procede et installation de separation d'air par distillation cryogenique
FR2865024B3 (fr) * 2004-01-12 2006-05-05 Air Liquide Procede et installation de separation d'air par distillation cryogenique
US7272954B2 (en) * 2004-07-14 2007-09-25 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Proceded Georges Claude Low temperature air separation process for producing pressurized gaseous product
EP1726900A1 (en) * 2005-05-20 2006-11-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and apparatus for the separation of air by cryogenic distillation
US20080223077A1 (en) * 2007-03-13 2008-09-18 Neil Mark Prosser Air separation method
US20100192628A1 (en) * 2009-01-30 2010-08-05 Richard John Jibb Apparatus and air separation plant
US8726691B2 (en) * 2009-01-30 2014-05-20 Praxair Technology, Inc. Air separation apparatus and method
US20100192629A1 (en) * 2009-01-30 2010-08-05 Richard John Jibb Oxygen product production method
US9279613B2 (en) * 2010-03-19 2016-03-08 Praxair Technology, Inc. Air separation method and apparatus
CN102564064A (zh) * 2010-11-25 2012-07-11 林德股份公司 通过低温分离空气获得气态压力产物的方法
US8991209B2 (en) * 2010-12-13 2015-03-31 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for producing high-pressure nitrogen
CN102721263A (zh) * 2012-07-12 2012-10-10 杭州杭氧股份有限公司 一种利用深冷技术分离空气的系统及方法
FR3014181B1 (fr) * 2013-11-29 2018-11-09 L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de separation d’air par distillation cryogenique
FR3014180B1 (fr) * 2013-11-29 2018-11-09 L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de separation d’air par distillation a basse temperature
BR112019003828A2 (pt) * 2016-08-30 2019-06-18 8 Rivers Capital Llc método de separação de ar criogênica para produzir oxigênio em altas pressões
FR3093009B1 (fr) 2019-02-21 2021-07-23 Air Liquide Procédé et installation de purification d’un flux gazeux de débit élevé
CN114174747B (zh) 2019-07-26 2024-05-28 乔治洛德方法研究和开发液化空气有限公司 用于通过低温蒸馏分离空气的方法和设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
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
US5337570A (en) * 1993-07-22 1994-08-16 Praxair Technology, Inc. Cryogenic rectification system for producing lower purity oxygen
US5475980A (en) * 1993-12-30 1995-12-19 L'air Liquide, Societe Anonyme Pour L'etude L'exploitation Des Procedes Georges Claude Process and installation for production of high pressure gaseous fluid
GB9405072D0 (en) * 1994-03-16 1994-04-27 Boc Group Plc Air separation
FR2721383B1 (fr) * 1994-06-20 1996-07-19 Maurice Grenier Procédé et installation de production d'oxygène gazeux sous pression.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169900A1 (fr) 2019-02-21 2020-08-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation et procédé de séparation des gaz de l'air mettant en œuvre un adsorbeur de forme parallélépipédique
WO2020169901A1 (fr) 2019-02-21 2020-08-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation et procédé de séparation des gaz de l'air à basse pression
US12098883B2 (en) 2019-02-21 2024-09-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude System and method for separating air gases at low pressure

Also Published As

Publication number Publication date
ES2193336T3 (es) 2003-11-01
DE69719578T2 (de) 2003-12-11
JPH09310970A (ja) 1997-12-02
FR2744795A1 (fr) 1997-08-14
CN1097715C (zh) 2003-01-01
KR970062629A (ko) 1997-09-12
FR2744795B1 (fr) 1998-06-05
ZA971031B (en) 1997-08-25
CN1168463A (zh) 1997-12-24
EP0789208A1 (fr) 1997-08-13
CA2197156A1 (en) 1997-08-13
DE69719578D1 (de) 2003-04-17
KR100466917B1 (ko) 2005-04-22
US5735142A (en) 1998-04-07

Similar Documents

Publication Publication Date Title
EP0789208B1 (fr) Procédé et installation de production d'oxygène gazeux sous haute pression
EP0420725B1 (fr) Procédé de production frigorifique, cycle frigorifique correspondant et leur application à la distillation d'air
EP0689019B1 (fr) Procédé et installation de production d'oxygène gazeux sous pression
EP0576314B1 (fr) Procédé et installation de production d'oxygène gazeux sous pression
EP0628778B1 (fr) Procédé et unité de fourniture d'un gaz sous pression à une installation consommatrice d'un constituant de l'air
EP2122282B1 (fr) Procédé de séparation d'un mélange de monoxyde de carbone, de méthane, d'hydrogène et d'azote par distillation cryogénique
EP0713069B1 (fr) Procédé et installation de séparation d'air
EP0848220B1 (fr) Procédé et installation de fourniture d'un débit variable d'un gaz de l'air
WO2007068858A2 (fr) Procédé de séparation d'air par distillation cryogénique
EP0605262B1 (fr) Procédé et installation de production d'oxygène gazeux sous pression
EP0618415B1 (fr) Procédé et installation de production d'oxygène gazeux et/ou d'azote gazeux sous pression par distillation d'air
EP1014020B1 (fr) Procédé de séparation cryogénique des gaz de l'air
EP0606027A1 (fr) Procédé et installation de production d'au moins un produit gazeux sous pression et d'au moins un liquide par distillation d'air
EP0694746A1 (fr) Procédé de production d'un gaz sous pression à débit variable
FR2688052A1 (fr) Procede et installation de production d'oxygene et/ou d'azote gazeux sous pression par distillation d'air.
FR2751737A1 (fr) Procede et installation de production d'un gaz de l'air a debit variable
EP0611218B2 (fr) Procédé et installation de production d'oxygene sous pression
CA2146831A1 (fr) Procede et installation pour la production de l'oxygene par distillation de l'air
EP0595673A1 (fr) Procédé et installation de production d'azote et d'oxygène
FR2837564A1 (fr) Procede et installation de production d'oxygene et/ou d'azote sous pression et d'argon pur
EP1409937B1 (fr) Procede de production de vapeur d'eau et de distillation d'air
WO2022162041A1 (fr) Procédé et appareil de séparation d'un débit riche en dioxyde de carbone par distillation pour produire du dioxyde de carbone liquide
FR2862004A1 (fr) Procede et installation d'enrichissement d'un flux gazeux en l'un de ses constituants
EP3913310A1 (fr) Procédé et appareil de séparation d'air par distillation cryogénique

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

AK Designated contracting states

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 19980213

17Q First examination report despatched

Effective date: 20000404

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

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

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

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 69719578

Country of ref document: DE

Date of ref document: 20030417

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2193336

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20031215

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050131

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

Ref country code: FR

Payment date: 20051208

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20060113

Year of fee payment: 10

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

Ref country code: BE

Payment date: 20060120

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070930

BERE Be: lapsed

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

Effective date: 20070131

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: 20070131

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070201

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: 20070131

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: 20070201

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

Ref country code: DE

Payment date: 20090122

Year of fee payment: 13

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

Ref country code: GB

Payment date: 20090122

Year of fee payment: 13

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100131

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: 20100803

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: 20100131