EP0833119B1 - Procédé et installation pour l'alimentation pour un appareil de séparation d'air - Google Patents

Procédé et installation pour l'alimentation pour un appareil de séparation d'air Download PDF

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Publication number
EP0833119B1
EP0833119B1 EP97402213A EP97402213A EP0833119B1 EP 0833119 B1 EP0833119 B1 EP 0833119B1 EP 97402213 A EP97402213 A EP 97402213A EP 97402213 A EP97402213 A EP 97402213A EP 0833119 B1 EP0833119 B1 EP 0833119B1
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EP
European Patent Office
Prior art keywords
air
exchange line
separation apparatus
water
compressor
Prior art date
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Expired - Lifetime
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EP97402213A
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German (de)
English (en)
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EP0833119A3 (fr
EP0833119A2 (fr
Inventor
Didier Magnet
Emmanuel Garnier
Bernard Saulnier
Jean-Louis Girault
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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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Publication of EP0833119A3 publication Critical patent/EP0833119A3/fr
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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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F25J3/04575—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating for a gas expansion plant, e.g. dilution of the combustion gas in a gas turbine
    • F25J3/04581—Hot gas expansion of indirect heated 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • 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
    • 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
    • F25J3/04181—Regenerating the adsorbents
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04612—Heat exchange integration with process streams, e.g. from the air gas consuming unit
    • F25J3/04618—Heat exchange integration with process streams, e.g. from the air gas consuming unit for cooling an air stream fed to the air fractionation unit
    • 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
    • F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
    • F25J2205/66—Regenerating the adsorption vessel, e.g. kind of reactivation gas
    • F25J2205/70—Heating the adsorption vessel
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/06—Adiabatic compressor, i.e. without interstage cooling
    • 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
    • F25J2270/906—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by heat driven absorption chillers
    • 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
    • F25J2290/12—Particular process parameters like pressure, temperature, ratios
    • 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
    • Y10S62/902—Apparatus
    • Y10S62/908—Filter or absorber
    • 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
    • Y10S62/902—Apparatus
    • Y10S62/909—Regeneration

Definitions

  • the present invention relates to a method and a installation for power supply for a air separation.
  • Air separation devices are typically supplied with air from at least one isothermal compressor fitted with inter-stage refrigerants in which the air is cooled by heat exchange with refrigeration air.
  • the air leaving the compressor is itself cooled in a final cooler or in an air / water tower, generally associated with a water / nitrogen tower and / or a group refrigerator.
  • This system generally called “precooling” provides air at a relatively low temperature (around 15 ° C) before direct to desiccation also limiting the size of the latter, the quantity of water contained in the air at increasing exponentially with temperature.
  • precooling provides air at a relatively low temperature (around 15 ° C) before direct to desiccation also limiting the size of the latter, the quantity of water contained in the air at increasing exponentially with temperature.
  • the compressors used are compressors isothermal.
  • EP-A-0069454 describes the use of a compressor adiabatic to power a separation device air, the compressed air then being cooled by water at high pressure.
  • the cost of installation is reduced by eliminating water refrigerants on the circuit supply air to the gas separation unit the air as well as the entire water circuit of associated cooling, including among others, towers water refrigeration, water treatment, pumps system, the distribution network, the taps, the power supplies and associated instrumentation, and finally the air water precooling system supplying the air gas separation unit.
  • This invention also has the advantage of reducing operating costs by a significant reduction of water consumption, by eliminating the costs of maintenance of the water network associated with the removal of possible corrosion problems of the water circuit and the periodic replacement of certain components (refrigerants, etc.) and by removing the power consumption of water pumps and water cooling tower fans.
  • All air for air separation unit A is compressed by an adiabatic air compressor 1.
  • the air tablet is at 200 ° C and must be cooled by exchange of heat with all or part of the products leaving separation device A and possibly by passage in an absorption refrigeration unit or by water cooler.
  • impure nitrogen 3 from device A cools the air which passes into the exchanger 5.
  • the air is then purified in the purification unit 7, which is regenerated by part of the impure nitrogen reheated in the exchanger 5.
  • the impure nitrogen can be saturated with water upstream of the exchanger 5 which causes a drop in the temperature thereof and thereby increases its capacity to cool the incoming air (see arrow H 2 O in dotted lines) .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Drying Of Gases (AREA)

Description

La présente invention concerne un procédé et une installation pour l'alimentation pour un appareil de séparation d'air.
Les appareils de séparation des gaz de l'air sont généralement alimentés en air à partir d'au moins un compresseur isotherme équipé de réfrigérants inter étages dans lesquels l'air est refroidi par échange de sa chaleur avec l'air de réfrigération.
L'air sortant du compresseur est lui-même refroidi dans un réfrigérant final ou dans une tour air/eau, associée en général à une tour eau/azote et/ou un groupe frigorifique. Ce système généralement appelé "prérefroidissement" permet d'obtenir de l'air à une température relativement faible (environ 15°C) avant de le diriger vers la dessiccation limitant aussi la taille de cette dernière , la quantité d'eau contenue dans l'air à une augmentant exponentiellement avec la température. De tels systèmes sont décrits dans "Current Alternatives by the Use of CFCs in the Air Separation and Liquefaction Processes" de Walter F. Castle, Kryogenika 1996.
Il est connu d'utiliser la chaleur du réfrigérant du compresseur pour réchauffer le gaz de régénération de
JP-A-62-335 691, de JP-196772/94, de FR-2 686 405 et de JP-A-07144114.
Or les compresseurs utilisés sont des compresseurs isothermes.
EP-A-0069454 décrit l'usage d'un compresseur adiabatique pour alimenter un appareil de séparation d'air, l'air comprimé étant refroidi ensuite par de l'eau à haute pression.
Il est un objet de la présente invention de diminuer le montant dé l'investissement d'une unité de séparation d'air.
Selon l'objet de l'invention il est prévu un procédé selon la revendication 1.
Selon d'autres aspects facultatifs de l'invention :
  • un des gaz de l'air réchauffé par l'air comprimé dans le compresseur adiabatique est ensuite envoyé à une unité d'épuration de l'air où il sert à la régénération ;
  • l'air épuré est renvoyé à la ligne d'échange ;
  • l'épuration en eau et l'épuration en CO2 ont lieu à deux températures différentes ;
  • un des gaz de l'air provenant de l'appareil de séparation, notamment de l'azote impur, est humidifié avant de rentrer dans la ligne, d'échange.
Selon un autre objet de l'invention , il est prévu une installation selon la revendication 6. Selon d'autres aspects facultatifs de l'invention :
  • le compresseur adiabatique est dédié à l'appareil de séparation d'air ;
  • l'appareil de séparation d'air est un appareil de distillation cryogénique ;
  • il y a des moyens pour humidifier un des gaz de l'air en amont de la ligne d'échange.
Comme les compresseurs adiabatiques n'ont pas de réfrigérant, le coût de l'installation est réduit en supprimant les réfrigérants à eau sur le circuit d'alimentation en air de l'unité de séparation de gaz de l'air ainsi que l'ensemble du circuit d'eau de refroidissement associé, incluant entres autres, les tours de réfrigération d'eau, le traitement de l'eau, les pompes à eau, le réseau de distribution, la robinetterie , les alimentations électriques et l'instrumentation associée, et enfin le système de prérefroidissement à l'eau de l'air alimentant l'unité de séparation de gaz de l'air.
Cette invention a également l'avantage de diminuer les coûts d'exploitation par une réduction importante de la consommation d'eau, par une suppression des coûts de maintenance du réseau d'eau associée à une suppression des problèmes éventuels de corrosion du circuit d'eau et le remplacement périodique de certains composants (réfrigérants, etc) et par la suppression de la consommation électrique des pompes à eau et des ventilateurs des tours de réfrigération d'eau.
En cas de système d'épuration de l'air en eau et CO2 de type dessiccation décarbonation à lit (s) d'absorbant (s) ou de tout autre système ne permettant pas l'épuration dans la ligne d'échange, l'air sera soutiré de la ligne d'échange avec les produits sortants pour épuré en eau et en CO2 puis réintégré dans la ligne d'échange, la température de soutirage de l'air sera choisie de façon à optimiser la taille du système d'épuration en eau et CO2. D'autre part, les épurations en eau et CO2 pourront être effectuées à deux températures de soutirage différentes, qui seront choisies de façon à optimiser économiquement l'ensemble du système ligne d'échange et épuration.
Un exemple de mise en oeuvre de l'invention va maintenant être décrit en regard du dessin annexé sur lequel :
  • la figure 1 représente schématiquement une installation pour l'alimentation d'un appareil de séparation d'air conforme à l'invention.
Tout l'air destiné à l'appareil de séparation d'air A est comprimé par un compresseur d'air adiabatique 1. L'air comprimé est à 200°C et doit être refroidi par échange de chaleur avec tous les produits ou une partie des produits sortant de l'appareil de séparation A et éventuellement par passage dans un groupe frigorifique à absorption ou par réfrigérant à eau. Dans l'exemple, de l'azote impur 3 provenant de l'appareil A refroidit l'air qui passe dans l'échangeur 5.
L'air est ensuite épuré dans l'unité d'épuration 7, qui est régénérée par une partie de l'azote impur réchauffé dans l'échangeur 5.
L'azote impur peut être saturé en eau en amont de l'échangeur 5 ce qui entraíne une baisse de la température de celui-ci et augmente de la sorte sa capacité à refroidir l'air entrant (voir flèche H2O en pointillés).

Claims (8)

  1. Procédé d'alimentation pour un appareil de séparation d'air (A) dans lequel au moins un des - compresseurs d'air est un compresseur adiabatique (1), tout l'air comprimé par le compresseur adiabatique (1) est envoyé à l'appareil de séparation d'air (A) et l'air provenant du compresseur adiabatique (1) est refroidi par des gaz de l'air provenant de l'appareil de séparation (A) dans une ligne d'échange (5) avant d'être envoyé à une unité d'épuration (7) où il est épuré en eau et/ou en CO2.
  2. Procédé selon la revendication 1 dans lequel un des gaz de l'air réchauffé par l'air comprimé dans le compresseur adiabatique (1) est ensuite envoyé à l'unité d'épuration de l'air (7) où il sert à la régénération.
  3. Procédé selon la revendication 1 ou 2 dans lequel l'air épuré est renvoyé à la ligne d'échange (5).
  4. Procédé selon la revendication 1, 2 ou 3 dans lequel l'épuration en eau et l'épuration en CO2 ont lieu à deux températures différentes.
  5. Procédé selon une des revendications précédentes dans lequel un des gaz de l'air provenant de l'appareil de séparation, notamment de l'azote impur, est humidifié avant de rentrer dans la ligne d'échange.
  6. Installation pour l'alimentation d'un appareil de séparation d'air comprenant une ligne d'échange (5), une unité d'épuration (7), des moyens pour envoyer l'air comprimé dans un compresseur (1) à la ligne d'échange et à l'unité d'épuration et ensuite à des moyens de séparation de l'air (A) et des moyens pour envoyer des gaz de l'air des moyens de séparation à la ligne d'échange, caractérisée en ce que au moins un des compresseurs d'air est un compresseur adiabatique (1) et l'air est envoyé de la ligne d'échange à l'unité d'épuration.
  7. Installation selon la revendication 6 dans laquelle le compresseur adiabatique (1) est dédié à l'appareil de séparation d'air (A).
  8. Installation selon la revendication 6 ou 7 dans laquelle l'appareil de séparation d'air est un appareil de distillation cryogénique.
EP97402213A 1996-09-25 1997-09-24 Procédé et installation pour l'alimentation pour un appareil de séparation d'air Expired - Lifetime EP0833119B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611681 1996-09-25
FR9611681A FR2753636B1 (fr) 1996-09-25 1996-09-25 Procede et installation pour l'alimentation pour un appareil de separation d'air

Publications (3)

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EP0833119A2 EP0833119A2 (fr) 1998-04-01
EP0833119A3 EP0833119A3 (fr) 1998-05-20
EP0833119B1 true EP0833119B1 (fr) 2001-12-19

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EP97402213A Expired - Lifetime EP0833119B1 (fr) 1996-09-25 1997-09-24 Procédé et installation pour l'alimentation pour un appareil de séparation d'air

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US (2) US5794457A (fr)
EP (1) EP0833119B1 (fr)
JP (1) JPH10185424A (fr)
KR (1) KR100487220B1 (fr)
CN (1) CN1119608C (fr)
CA (1) CA2216552C (fr)
DE (1) DE69709280T2 (fr)
ES (1) ES2169334T3 (fr)
FR (1) FR2753636B1 (fr)
PL (1) PL322294A1 (fr)
ZA (1) ZA978555B (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US7207392B2 (en) * 2000-04-17 2007-04-24 Firepass Ip Holdings, Inc. Method of preventing fire in computer room and other enclosed facilities
FR2756367B1 (fr) * 1998-01-13 1999-06-18 Air Liquide Procede et installation pour l'alimentation pour un appareil de separation d'air
US20070186581A1 (en) * 2006-02-14 2007-08-16 Ingersoll-Rand Company Compressor cooling system
FR2919717A1 (fr) * 2007-11-06 2009-02-06 Air Liquide Procede et appareil de separation d'air avec compression de produit
EP2504647B1 (fr) * 2009-11-23 2019-02-20 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé et appareil de compression et de refroidissement d'air
FR2969263B1 (fr) * 2010-12-15 2013-01-04 Air Liquide Procede et appareil integres de compression d'air et de production d'un fluide riche en dioxyde de carbone
KR101944486B1 (ko) * 2013-01-09 2019-04-17 주식회사 원익홀딩스 가스 정제 장치

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DE2626591C2 (de) * 1976-06-14 1984-08-23 Dürr Anlagenbau GmbH, 7000 Stuttgart Verfahren und Vorrichtung zur Abluftreinigung
GB2100801B (en) * 1981-06-18 1984-10-10 Air Prod & Chem Method and apparatus for compressing gas
US5058387A (en) * 1989-07-05 1991-10-22 The Boc Group, Inc. Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants
US5089034A (en) * 1990-11-13 1992-02-18 Uop Process for purifying natural gas
FR2684089B1 (fr) * 1991-11-26 1994-01-14 Air Liquide Procede de production combinee et a debits reglables d'azote et d'oxygene.
FR2686405B1 (fr) * 1992-01-20 2001-02-09 Air Liquide Procede et application de separation d'air, et application d'une telle installation.
US5388395A (en) * 1993-04-27 1995-02-14 Air Products And Chemicals, Inc. Use of nitrogen from an air separation unit as gas turbine air compressor feed refrigerant to improve power output
JPH07144114A (ja) * 1993-11-26 1995-06-06 Kawasaki Steel Corp 空気液化分離装置用原料空気前処理吸着器の再生時間短縮を可能とする装置
US5592832A (en) * 1995-10-03 1997-01-14 Air Products And Chemicals, Inc. Process and apparatus for the production of moderate purity oxygen
US5666823A (en) * 1996-01-31 1997-09-16 Air Products And Chemicals, Inc. High pressure combustion turbine and air separation system integration

Also Published As

Publication number Publication date
CA2216552C (fr) 2005-12-20
FR2753636A1 (fr) 1998-03-27
PL322294A1 (en) 1998-03-30
DE69709280T2 (de) 2002-08-08
KR19980024943A (ko) 1998-07-06
US6067817A (en) 2000-05-30
ES2169334T3 (es) 2002-07-01
US5794457A (en) 1998-08-18
EP0833119A3 (fr) 1998-05-20
CN1119608C (zh) 2003-08-27
CN1184242A (zh) 1998-06-10
CA2216552A1 (fr) 1998-03-25
EP0833119A2 (fr) 1998-04-01
KR100487220B1 (ko) 2005-07-28
FR2753636B1 (fr) 2001-11-09
ZA978555B (en) 1998-03-26
DE69709280D1 (de) 2002-01-31
JPH10185424A (ja) 1998-07-14

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