EP1139046A1 - Procédé et installation de production d'un produit sous haute pression par séparation cryogénique de l'air - Google Patents

Procédé et installation de production d'un produit sous haute pression par séparation cryogénique de l'air Download PDF

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Publication number
EP1139046A1
EP1139046A1 EP00115777A EP00115777A EP1139046A1 EP 1139046 A1 EP1139046 A1 EP 1139046A1 EP 00115777 A EP00115777 A EP 00115777A EP 00115777 A EP00115777 A EP 00115777A EP 1139046 A1 EP1139046 A1 EP 1139046A1
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EP
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Prior art keywords
pressure
column
feed air
low
feed
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Granted
Application number
EP00115777A
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German (de)
English (en)
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EP1139046B1 (fr
Inventor
Dietrich Dipl.-Ing. Rottmann
Christian Dipl.-Ing. Kunz
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Linde GmbH
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Linde GmbH
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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04024—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of purified feed air, so-called boosted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04145—Mechanically coupling of different compressors of the air fractionation process to the same driver(s)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product 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
    • F25J3/04151—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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/0446—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the heat generated by mixing two different phases
    • F25J3/04466—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air

Definitions

  • the invention relates to a method for obtaining a printed product by Cryogenic air separation to obtain a gaseous printed product from a mixing column according to claim 1.
  • the mixing column operated at a pressure lower than the operating pressure of the high pressure column of the two-pillar system that is used for nitrogen-oxygen separation.
  • the rectification system of the invention can be a two-column system, for example as classic double column system, be formed, but also as a three or Multi-column system. It can be used in addition to the columns for nitrogen-oxygen separation other devices for extracting other air components, especially noble gases (e.g. krypton, xenon and / or argon) exhibit.
  • noble gases e.g. krypton, xenon and / or argon
  • the oxygen-rich fraction used as an insert for the mixing column points an oxygen concentration higher than that of air and for example 70 to 99.5 mol%, preferably 90 to 98 mol%.
  • Under Mixing column is understood to be a countercurrent contact column in which a more volatile gaseous fraction of a less volatile liquid is sent to.
  • the method according to the invention is particularly suitable for the extraction of gaseous impure oxygen under pressure.
  • An impure oxygen is used here Mixture with an oxygen content of 99.5 mol% or less, in particular of 70 to 99.5 mol%.
  • the product pressures are, for example, 2.2 to 4.9 bar, preferably at 2.5 to 4.5 bar.
  • the printed product if necessary, be compressed further in gaseous state.
  • EP 697576 A1 A method and a device of the type mentioned at the outset are out EP 697576 A1 known.
  • the total air is at about high pressure column pressure compresses and the mixing column air then to the operating pressure of the mixing column relaxed, with the relaxation of part of the mixing column air performing work is carried out.
  • the high pressure of this partial air flow can Cooling can be used.
  • the known method is not in all Cases energetically favorable.
  • the invention has for its object a method of the type mentioned and to provide a corresponding device that is particularly small Have energy consumption.
  • a total air flow which comprises at least the first and the second feed air flow, is compressed to a first pressure (p 2 ), which is lower than the operating pressure (p HDS ) of the high-pressure column , and under approximately this first pressure (p 1 ) is cleaned, that the cleaned total air flow is divided into the first and the second feed air flow and that the first feed air flow is further compressed separately from the second feed air flow to a second pressure (p 1 ) which is at least equal to the operating pressure (p HDS ) of the High pressure column.
  • the total air flow is not compressed to the highest pressure in the system, but to a lower value.
  • the air part or parts that have a relatively high Require pressure - especially the high pressure column air - are deliberately separated further compressed. This allows you to use the least possible amount of energy Compress the feed air.
  • the least amount of equipment is required if the first pressure is about the same the operating pressure of the mixing column.
  • the mixing column air second Feed air flow) into the mixing column without any further pressure-changing measures be initiated.
  • the first pressure can be lower than the operating pressure (p MiS ) of the mixing column.
  • the second feed air stream is further compressed separately from the first feed air stream to a third pressure (p 3 ) which is at least equal to the operating pressure (p MiS ) of the mixing column.
  • the liquid-pressurized oxygen-rich fraction is preferably added before the Feed on the mixing column in indirect heat exchange with an overheated one Airflow warmed up.
  • the superheated airflow is caused, for example, by part of the Feed air is formed, which is at high pressure column pressure. This is at a Intermediate temperature from the main heat exchanger, in the feed air to about Dew point is cooled, removed and without further temperature changing Measures for indirect heat exchange with the oxygen-rich liquid brought. In this way, the temperature of the liquid on the mixing column is optimally given to the conditions in countercurrent mass transfer adjusted within the mixing column.
  • the third feed air stream is preferably used before the work-related relaxation post-condensed, particularly during work-related relaxation mechanical energy is used to drive the post-compression.
  • This can a turbine-booster combination can be used in the expansion turbine and post-compressor are mechanically coupled via a common shaft.
  • the third feed air flow can be combined with the first and second on the first Pressure compressed and cleaned. Then it either becomes immediate led to post-compression or together with the first feed air flow post-compressed.
  • the second feed air flow after it has been further compressed and before it is fed in the mixing column can be relaxed while working.
  • the further compression then takes place to a second pressure that is significantly higher than the mixing column pressure.
  • the invention also relates to a device according to claim 9.
  • feed air 1 is brought to a first pressure p 1 of, for example, 2.7 to 3.7 bar, preferably about 3.2 bar, in a two-stage air compressor 2 with after-cooling and enters a cleaning device 3 under this pressure which is preferably formed by a pair of molecular sieve adsorbers.
  • the cleaned total air 4 is divided into three partial streams 5, 6, 7.
  • the first feed air stream 5 is further compressed in a first post-compressor 8 to a second pressure p 2 of, for example, 4.4 to 7.0 bar, preferably about 5.7 bar, and flows into a main heat exchanger 10 after post-cooling 9.
  • the first feed air stream leaves the main heat exchanger 10 via line 11 at approximately dew point temperature and is fed via line 12 into a high-pressure column 13.
  • the operating pressure P HDS of the high pressure column 13 is, for example, 4.3 to 6.9 bar, preferably approximately 5.6 bar.
  • the rectification system also has a low pressure column 14 which is operated under, for example, 1.3 to 1.7 bar, preferably about 1.5 bar.
  • the second feed air stream 6 is likewise passed through the main heat exchanger 10 at approximately the first pressure p 1 (minus line losses and pressure losses in the cleaning device) and finally flows via line 15 to the mixing column.
  • the feed point is located directly above the bottom of the mixing column 16.
  • the third partial stream 7 is post-compressed from about the first pressure p 1 in a second post-compressor 17 to a third pressure p 3 of, for example, 3.8 to 5.6 bar, preferably about 4.7 bar, and after post-cooling 18 via line 19, the warm one End of the main heat exchanger supplied. However, it is only cooled to an intermediate temperature and drawn off from the main heat exchanger 10 again via line 50 before the cold end and expanded in a turbine 20 to perform work. The relaxed air 21 is blown into the low pressure column 14. Post-compressor 17 and turbine 20 are directly mechanically coupled.
  • the rectification system is in the exemplary embodiments as a classic Linde double column apparatus with a condenser-evaporator 22 as the main condenser executed.
  • the invention can also be used in rectification systems with others Capacitor and / or column configuration can be used.
  • Oxygenated liquid 23 from the sump of the high pressure column 13 is in a first supercooling counterflow 24 cooled and after throttling 25 the Low pressure column 14 supplied at an intermediate point 26.
  • the rest of 30 will Main capacitor 22 is substantially fully condensed.
  • the won here liquid nitrogen 31 is at least partially 32 as a return to the high pressure column 13 abandoned. If necessary, another part 33 can be drawn off as a liquid product become.
  • An intermediate liquid (impure nitrogen) of the high pressure column 34 serves after hypothermia 24 and throttling 35 as return for the low pressure column.
  • Gaseous impure nitrogen 36 from the top of the low pressure column is in the Heat exchangers 24 and 10 warmed and finally withdrawn via line 37. He can be used as a regeneration gas for the cleaning device 3 as shown become.
  • Liquid oxygen 38 is drawn off from the bottom of the low-pressure column, in one Pump 39 to a pressure of, for example, 5.7 to 6.5 bar, preferably about 6.1 bar brought, warmed in a second subcooling countercurrent 40 and finally abandoned on the top of the mixing column 16 (41).
  • the second Supercooling counterflow 40 becomes, in particular, an overheated airflow 42 cooled, the upstream of the cold end of the main heat exchanger from the first Feed air flow is branched, and at an intermediate temperature that is lower than the inlet temperature of the turbine 20. This airflow is followed by its cooling via line 43 again combined with the first feed air stream 11. Via the valve 44, the amount of by the second supercooling counterflow flowing airflow set.
  • Gaseous impure pressurized oxygen 51 is drawn off from the top of the mixing column 16, warmed in the main heat exchanger 10 and obtained as product 52.
  • the mixing column Bottom liquid 45 and an intermediate liquid 46 are removed and over the Lines 47 and 48 at a suitable point on the low-pressure column 14 fed.
  • Figure 2 differs only from Figure 1 in that the third feed air flow 207 is further compressed together with the second feed air flow in the first post-compressor 108. As a result, a higher inlet pressure is reached at the turbine 20 and correspondingly more cold is generated.
  • the cleaning device is operated under a first pressure p 1 'which is higher than the operating pressure p MiS of the mixing column.
  • the first pressure p 1 ' is here, for example, 2.7 to 3.7 bar, preferably about 3.2 bar.
  • the second feed air stream 306 is expanded upstream of its feed into the mixing column.
  • a third feed air stream that is blown into the low pressure column does not exist.
  • the second feed air stream 306 is further compressed downstream of its branch from the cleaned total air in the second post-compressor 317, which is driven by the turbine 320.
  • the second feed air flow 349 which is further compressed to, for example, 3.8 to 5.6 bar, preferably about 4.7 bar, is fed to the turbine 320 via line 350 and is expanded there to perform work to approximately mixing column pressure p MiS .
  • the cleaning 3 is operated under a particularly low first pressure p 1 "of, for example, 2.7 to 3.7 bar, preferably about 3.2 bar.
  • the turbine 420 is operated as in FIG 1 is acted upon by a third feed air stream 407, 450, which, however, is not post-compressed here, but is instead expanded to perform work from approximately the first pressure p 1 "to approximately low-pressure column pressure.
  • the turbine-driven post-compressor 418 is used here to further compress the second feed air flow to the second pressure p 2 , which is approximately equal to the operating pressure p MiS of the mixing column.
  • the air compressor and the post-compressor 8, 108 preferably formed together as a three-stage machine.
  • the further compression of the first feed air flow becomes one in the third stage Machine carried out, the first and second stage for air compression serve upstream of the cleaning 3.
  • this machine can also be four stages, in which case the first three stages before Cleaning device 3 are arranged.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
EP00115777A 2000-03-29 2000-07-21 Procédé et installation de production d'oxygène sous haute pression par séparation cryogénique de l'air Expired - Lifetime EP1139046B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10015602A DE10015602A1 (de) 2000-03-29 2000-03-29 Verfahren und Vorrichtung zur Gewinnung eines Druckprodukts durch Tieftemperaturzerlegung von Luft
DE10015602 2000-03-29

Publications (2)

Publication Number Publication Date
EP1139046A1 true EP1139046A1 (fr) 2001-10-04
EP1139046B1 EP1139046B1 (fr) 2004-04-21

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EP00115777A Expired - Lifetime EP1139046B1 (fr) 2000-03-29 2000-07-21 Procédé et installation de production d'oxygène sous haute pression par séparation cryogénique de l'air

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DE102007031759A1 (de) 2007-07-07 2009-01-08 Linde Ag Verfahren und Vorrichtung zur Erzeugung von gasförmigem Druckprodukt durch Tieftemperaturzerlegung von Luft
DE102007031765A1 (de) 2007-07-07 2009-01-08 Linde Ag Verfahren zur Tieftemperaturzerlegung von Luft
DE102009034979A1 (de) 2009-04-28 2010-11-04 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung von gasförmigem Drucksauerstoff
EP2312248A1 (fr) 2009-10-07 2011-04-20 Linde Aktiengesellschaft Procédé et dispositif de production d'oxygène sous pression et de crypton/xénon
EP2458311A1 (fr) 2010-11-25 2012-05-30 Linde Aktiengesellschaft Procédé et dispositif de production d'un produit d'impression gazeux par décomposition à basse température d'air
DE102010052544A1 (de) 2010-11-25 2012-05-31 Linde Ag Verfahren zur Gewinnung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft
EP2505947A1 (fr) 2011-03-29 2012-10-03 Linde Aktiengesellschaft Procédé et dispositif destinés à la production de verre flotté
DE102011015429A1 (de) 2011-03-29 2012-10-04 Linde Ag Verfahren und Vorrichtung zum Betreiben eines Rebox-Brenners
EP2520886A1 (fr) 2011-05-05 2012-11-07 Linde AG Procédé et dispositif de production d'un produit comprimé à oxygène gazeux par décomposition à basse température d'air
EP2568242A1 (fr) 2011-09-08 2013-03-13 Linde Aktiengesellschaft Procédé et dispositif destinés à la production d'acier
EP2600090A1 (fr) 2011-12-01 2013-06-05 Linde Aktiengesellschaft Procédé et dispositif destinés à la production d'oxygène sous pression par décomposition à basse température de l'air
DE102011121314A1 (de) 2011-12-16 2013-06-20 Linde Aktiengesellschaft Verfahren zur Erzeugung eines gasförmigen Sauerstoff-Druckprodukts durch Tieftemperaturzerlegung von Luft
DE102013017590A1 (de) 2013-10-22 2014-01-02 Linde Aktiengesellschaft Verfahren zur Gewinnung eines Krypton und Xenon enthaltenden Fluids und hierfür eingerichtete Luftzerlegungsanlage
EP2703757A1 (fr) 2012-09-04 2014-03-05 Linde Aktiengesellschaft Procédé et installation destinés à générer des produits à base d'oxygène liquides et gazeux par décomposition à basse température de l'air
DE102012017488A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren
EP2784420A1 (fr) 2013-03-26 2014-10-01 Linde Aktiengesellschaft Procédé de séparation de l'air et installation de séparation de l'air
WO2014154339A2 (fr) 2013-03-26 2014-10-02 Linde Aktiengesellschaft Procédé de séparation d'air et installation de séparation d'air
EP2801777A1 (fr) 2013-05-08 2014-11-12 Linde Aktiengesellschaft Installation de décomposition de l'air dotée d'un entraînement de compresseur principal
US9228778B2 (en) 2011-03-25 2016-01-05 Linde Aktiengesellschaft Device for the low-temperature separation of air
EP2963371A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif de production d'un produit de gaz sous pression par decomposition a basse temperature d'air
EP2963367A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procédé et dispositif cryogéniques de séparation d'air avec consommation d'énergie variable
EP2963369A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif cryogeniques de separation d'air
EP2963370A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif cryogeniques de separation d'air

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7437890B2 (en) * 2006-01-12 2008-10-21 Praxair Technology, Inc. Cryogenic air separation system with multi-pressure air liquefaction
DE102010012920A1 (de) 2010-03-26 2011-09-29 Linde Aktiengesellschaft Vorrichtung zur Tieftemperaturzerlegung von Luft
WO2011116981A2 (fr) 2010-03-26 2011-09-29 Linde Aktiengesellschaft Dispositif pour la décomposition à basse température d'air
DE102011114090A1 (de) * 2010-11-09 2012-05-10 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
DE102012021694A1 (de) 2012-11-02 2014-05-08 Linde Aktiengesellschaft Verfahren zur Tieftemperaturzerlegung von Luft in einer Luftzerlegungsanlage und Luftzerlegungsanlage
BR112015009379A2 (pt) * 2012-11-02 2017-07-04 Linde Ag processo para separação de baixa temperatura de ar em uma usina de separação de ar e usina de separação de ar
DE102013002094A1 (de) 2013-02-05 2014-08-07 Linde Aktiengesellschaft Verfahren zur Produktion von Luftprodukten und Luftzerlegungsanlage
DE102015015684A1 (de) 2015-12-03 2016-07-21 Linde Aktiengesellschaft Verfahren zur Tieftemperaturzerlegung von Luft und Luftzerlegungsanlage
EP3179186A1 (fr) 2015-12-07 2017-06-14 Linde Aktiengesellschaft Procede de production d'un produit comprime riche en oxygene, gazeux et liquide dans une installation de decomposition de l'air et installation de decomposition de l'air
EP3248670A1 (fr) 2016-05-24 2017-11-29 Linde Aktiengesellschaft Processus et combinaison d'installations pour la fabrication de produits de synthèse contenant de l'azote
EP3248962A1 (fr) 2016-05-24 2017-11-29 Linde Aktiengesellschaft Processus et ensemble combine d'installations destines a la production d'uree
CN114413571A (zh) * 2022-01-24 2022-04-29 四川空分集团工程有限公司 一种低能耗低压压力氧空分装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697576A1 (fr) * 1994-08-17 1996-02-21 The Boc Group, Inc. Procédé et dispositif de séparation d'air
US5551258A (en) * 1994-12-15 1996-09-03 The Boc Group Plc Air separation
DE19815885A1 (de) * 1998-04-08 1999-10-14 Linde Ag Verfahren und Vorrichtung zur Erzeugung von gasförmigem Druckprodukt bei der Tieftemperaturzerlegung von Luft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697576A1 (fr) * 1994-08-17 1996-02-21 The Boc Group, Inc. Procédé et dispositif de séparation d'air
US5551258A (en) * 1994-12-15 1996-09-03 The Boc Group Plc Air separation
DE19815885A1 (de) * 1998-04-08 1999-10-14 Linde Ag Verfahren und Vorrichtung zur Erzeugung von gasförmigem Druckprodukt bei der Tieftemperaturzerlegung von Luft

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031759A1 (de) 2007-07-07 2009-01-08 Linde Ag Verfahren und Vorrichtung zur Erzeugung von gasförmigem Druckprodukt durch Tieftemperaturzerlegung von Luft
DE102007031765A1 (de) 2007-07-07 2009-01-08 Linde Ag Verfahren zur Tieftemperaturzerlegung von Luft
EP2015013A2 (fr) 2007-07-07 2009-01-14 Linde Aktiengesellschaft Procédé et dispositif de production d'un gaz sous pression par séparation cryogénique d'air
EP2015012A2 (fr) 2007-07-07 2009-01-14 Linde Aktiengesellschaft Procédé pour la séparation cryogénique d'air
DE102009034979A1 (de) 2009-04-28 2010-11-04 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung von gasförmigem Drucksauerstoff
EP2312248A1 (fr) 2009-10-07 2011-04-20 Linde Aktiengesellschaft Procédé et dispositif de production d'oxygène sous pression et de crypton/xénon
DE102010052544A1 (de) 2010-11-25 2012-05-31 Linde Ag Verfahren zur Gewinnung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft
DE102010052545A1 (de) 2010-11-25 2012-05-31 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Gewinnung eines gasförmigen Druckprodukts durch Tieftemperaturzerlegung von Luft
EP2466236A1 (fr) 2010-11-25 2012-06-20 Linde Aktiengesellschaft Procédé de production d'un produit d'impression gazeux par décomposition à basse température de l'air
EP2458311A1 (fr) 2010-11-25 2012-05-30 Linde Aktiengesellschaft Procédé et dispositif de production d'un produit d'impression gazeux par décomposition à basse température d'air
US9228778B2 (en) 2011-03-25 2016-01-05 Linde Aktiengesellschaft Device for the low-temperature separation of air
EP2505947A1 (fr) 2011-03-29 2012-10-03 Linde Aktiengesellschaft Procédé et dispositif destinés à la production de verre flotté
DE102011015429A1 (de) 2011-03-29 2012-10-04 Linde Ag Verfahren und Vorrichtung zum Betreiben eines Rebox-Brenners
DE102011015430A1 (de) 2011-03-29 2012-10-04 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung von Flachgas
EP2520886A1 (fr) 2011-05-05 2012-11-07 Linde AG Procédé et dispositif de production d'un produit comprimé à oxygène gazeux par décomposition à basse température d'air
EP2568242A1 (fr) 2011-09-08 2013-03-13 Linde Aktiengesellschaft Procédé et dispositif destinés à la production d'acier
DE102011112909A1 (de) 2011-09-08 2013-03-14 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Gewinnung von Stahl
EP2600090A1 (fr) 2011-12-01 2013-06-05 Linde Aktiengesellschaft Procédé et dispositif destinés à la production d'oxygène sous pression par décomposition à basse température de l'air
DE102011121314A1 (de) 2011-12-16 2013-06-20 Linde Aktiengesellschaft Verfahren zur Erzeugung eines gasförmigen Sauerstoff-Druckprodukts durch Tieftemperaturzerlegung von Luft
EP2703757A1 (fr) 2012-09-04 2014-03-05 Linde Aktiengesellschaft Procédé et installation destinés à générer des produits à base d'oxygène liquides et gazeux par décomposition à basse température de l'air
DE102012017484A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren und Anlage zur Erzeugung flüssiger und gasförmiger Sauerstoffprodukte durch Tieftemperaturzerlegung von Luft
DE102012017488A1 (de) 2012-09-04 2014-03-06 Linde Aktiengesellschaft Verfahren zur Erstellung einer Luftzerlegungsanlage, Luftzerlegungsanlage und zugehöriges Betriebsverfahren
WO2014037091A2 (fr) 2012-09-04 2014-03-13 Linde Aktiengesellschaft Procédé et installation de production de produits d'oxygène liquides et gazeux par fractionnement cryogénique de l'air
WO2014154339A2 (fr) 2013-03-26 2014-10-02 Linde Aktiengesellschaft Procédé de séparation d'air et installation de séparation d'air
EP2784420A1 (fr) 2013-03-26 2014-10-01 Linde Aktiengesellschaft Procédé de séparation de l'air et installation de séparation de l'air
EP2801777A1 (fr) 2013-05-08 2014-11-12 Linde Aktiengesellschaft Installation de décomposition de l'air dotée d'un entraînement de compresseur principal
DE102013017590A1 (de) 2013-10-22 2014-01-02 Linde Aktiengesellschaft Verfahren zur Gewinnung eines Krypton und Xenon enthaltenden Fluids und hierfür eingerichtete Luftzerlegungsanlage
EP2963371A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif de production d'un produit de gaz sous pression par decomposition a basse temperature d'air
EP2963367A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procédé et dispositif cryogéniques de séparation d'air avec consommation d'énergie variable
EP2963369A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif cryogeniques de separation d'air
EP2963370A1 (fr) 2014-07-05 2016-01-06 Linde Aktiengesellschaft Procede et dispositif cryogeniques de separation d'air
WO2016005031A1 (fr) 2014-07-05 2016-01-14 Linde Aktiengesellschaft Procédé et dispositif de fractionnement de l'air à basse température à consommation d'énergie variable

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CN1179181C (zh) 2004-12-08
DE10015602A1 (de) 2001-10-04
ES2219230T3 (es) 2004-12-01
ATE265032T1 (de) 2004-05-15
US20010052244A1 (en) 2001-12-20
EP1139046B1 (fr) 2004-04-21
KR20010093765A (ko) 2001-10-29
DE50006148D1 (de) 2004-05-27
CN1320798A (zh) 2001-11-07

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