EP2457047B1 - Verfahren und vorrichtung zur lufttrennung durch kryogene destillation - Google Patents

Verfahren und vorrichtung zur lufttrennung durch kryogene destillation Download PDF

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Publication number
EP2457047B1
EP2457047B1 EP10754355.5A EP10754355A EP2457047B1 EP 2457047 B1 EP2457047 B1 EP 2457047B1 EP 10754355 A EP10754355 A EP 10754355A EP 2457047 B1 EP2457047 B1 EP 2457047B1
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Prior art keywords
supercharger
air
exchange line
hot
cold
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EP10754355.5A
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English (en)
French (fr)
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EP2457047A2 (de
Inventor
Frédéric Judas
Hervé Le Bihan
Patrick Le Bot
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Air Liquide SA
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 EP2457047A2 publication Critical patent/EP2457047A2/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—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
    • 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
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
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    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/04054—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of air
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    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
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    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • F25J3/04175—Hot end purification of the feed air by adsorption of the impurities at a pressure of substantially more than the highest pressure column
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    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
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    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
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    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04436—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 at least a triple pressure main column system
    • F25J3/04448—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 at least a triple pressure main column system in a double column flowsheet with an intermediate 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
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    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—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
    • F25J3/04775—Air purification and pre-cooling
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
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    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
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    • F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
    • F25J2240/42—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval the fluid being air
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    • 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 present invention relates to a method and apparatus for air separation by cryogenic distillation.
  • the invention is particularly applicable to air separation methods using a hot air booster, a cold air booster and two air turbines.
  • a cold air booster is a booster powered by air at a temperature colder than the temperature of the hot end of the main exchange line of the apparatus, typically powered by air unless -20 ° C.
  • the purified air from the main compressor is divided into two. A portion is sent to a hot booster, cooled in the exchange line to an intermediate temperature and then relaxed in two Claude turbines connected in parallel. Part of the air from the hot booster may possibly be liquefied in the exchange line instead of being sent to the turbines.
  • the remainder of the air from the main compressor cools in the exchange line without being overpressurized upstream of it and is supercharged in a cold booster at an intermediate temperature of the exchange line, returned to the line d exchange at an intermediate temperature of the exchange line, liquefied and sent to at least one column of the double column.
  • At least one waste gas is heated in the exchange line where a pressurized liquid from the double column, in particular oxygen, is also vaporized.
  • the optimum configuration in this case is to supply the cold booster to a pressure close to the outlet pressure of the main compressor.
  • the rest of the air (70% of the flow rate) feeds the Claude turbines after passing through the hot booster.
  • the output pressure of the main compressor is very insufficient to allow the vaporization of oxygen.
  • the present invention seeks to find a solution to this problem.
  • a method according to the preamble of claim 1 and an installation according to the preamble of claim 5 are known to FR-A-2895068 and WO-2004/099690 .
  • the air 11 from the main compressor (not shown) and a purification unit (not shown) is divided into two parts only.
  • a part 13 is sent to a hot booster C1, cooled in the exchange line 91 to an intermediate temperature and then sent through the open valve 4 and the lines 23, 27 to be expanded in two turbines T1, T2 connected in parallel by the lines 31, 35.
  • the expanded air 35 from the turbines T1, T2 is sent to the medium pressure column of the double column.
  • Part of the air from the hot booster C1 may possibly be liquefied in the exchange line instead of being sent to the turbines.
  • the remainder of the air from the main compressor cools in a first series of passages of the exchange line 91 through the open valve 9 and is supercharged in a cold booster C2 at an intermediate temperature of the line. exchange, returned to the exchange line at an intermediate temperature thereof in a second series of passages, liquefied and sent to at least one column of the double column, for example the medium pressure column.
  • a first series of passages of the exchange line 91 through the open valve 9 and is supercharged in a cold booster C2 at an intermediate temperature of the line. exchange, returned to the exchange line at an intermediate temperature thereof in a second series of passages, liquefied and sent to at least one column of the double column, for example the medium pressure column.
  • At least one waste gas WN arrives from the low pressure column through line 39 and heats up in the exchange line where a pressurized liquid 41 from the double column, in particular pressurized oxygen, is also vaporized.
  • valves 1, 2, 5 and 6 are closed, so that the lines 21, 25, 29, 39 do not receive air.
  • Pipes 19 and 17 are not necessarily present and their operation will not be described. It is assumed that the valves 3 and 7 are closed for the explanation of the method according to the invention.
  • air 11 from the main compressor (not shown) is split in two. Part 13 is sent to the hot booster C1.
  • the air supercharged in the hot booster C1 is sent in part to the pipe 21 and partly to the pipe 23, 27.
  • the air passing through the pipe 23, 27 and the valve 4 is cooled in the exchange line 91 to an intermediate temperature to be expanded in a single Claude T1 turbine.
  • the turbine T2 does not work since it is usually coupled to the cold booster C2.
  • the expanded air is sent to the medium pressure column of the double column.
  • the air sent via the pipe 21 and the valve 2 cools in the heat exchange line 91 to an intermediate temperature thereof in the passages in which the air intended for the cold compressor C2 normally cools.
  • the air is sent to the valve 5 via line 39 at an intermediate temperature of the exchange line through the passages normally traversed by the air coming from the cold compressor C2.
  • the air from the valve 5 liquefies before being sent to at least one column of the double column.
  • Part of the air coming from the pipe 27 can also possibly be liquefied in the exchange line instead of being sent to the turbines.
  • the remainder of the air from the main compressor is sent through the valve 1 and the lines 25, 27 cool with the air from the valve 4 in the exchange line 91 to an intermediate temperature.
  • At least one waste gas WN arrives via line 39 and heats up in the exchange line where a pressurized liquid 41 from the double column, in particular oxygen, is also vaporized.
  • valves 2 and 4 in case of failure of the hot booster, the valves 2 and 4 are closed, the valves 1, 6 and 9 open and the air 11 from the main compressor (not shown) is sent in full by the conduct 15 and divided into two. A portion passes through the valve 1 and the pipe 23, 27 to be sent to the exchange line 91 to an intermediate temperature to be partially expanded in a single turbine T2.
  • the turbine T1 does not work since it is usually coupled to the hot booster C1.
  • the remainder of the intermediate temperature air is expanded in the valve 6 and mixed with the waste gas 39, to heat up in the exchange line.
  • the air sent by the valve 9 cools in the exchange line 91 and is supercharged in the cold booster C2, returned to the exchange line 91 and liquefied.
  • Part of the air coming from the pipe 25 can also possibly be liquefied in the exchange line instead of being sent to the turbine T2.
  • At least one waste gas WN arrives via line 39 and heats up in the exchange line where a pressurized liquid 41 from the double column, in particular oxygen, is also vaporized.
  • valves 2 and 4 are closed, so that the pipes 13, 21, 31, 39 do not receive air.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (11)

  1. Verfahren zur Luftabscheidung durch kryogene Destillation in einer Anlage, umfassend eine Doppel- oder Dreifachsäule zur Luftabscheidung, deren Säule, die mit dem höchsten Druck arbeitet, bei einem sogenannten mittleren Druck arbeitet, und eine Austauschleitung (91), in der die gesamte für die Destillation bestimmte Luft abkühlt, wobei im Normalbetrieb:
    a) die gesamte Luft auf einen mindestens 5 bar höheren Hochdruck als der mittlere Druck gebracht und bei diesem Hochdruck gereinigt wird,
    b) die gereinigte Luft in zwei Fraktionen (13, 15) unterteilt wird,
    c) eine erste Hochdruckfraktion (13) zu einem heißen Verdichter (C1) geleitet wird, die erste verdichtete Fraktion in der Austauschleitung auf eine Zwischentemperatur abkühlt,
    d) die erste gekühlte Fraktion in zwei Abschnitte (31, 33) unterteilt wird, wobei sich jeder Abschnitt in einer entsprechenden Turbine (T1 ,T2) entspannt,
    e) der Einlassdruck der ersten und zweiten Turbine, oder die Drücke beider Turbinen, mindestens 5 bar höher ist oder sind, als der mittlere Druck,
    f) der Auslassdruck von mindestens einer der beiden Turbinen im Wesentlichen gleich dem mittleren Druck ist,
    g) mindestens ein Teil der entspannten Luft in mindestens einer der Turbinen der Mitteldrucksäule der Doppel- oder Dreifachsäule geleitet wird,
    h) eine zweite Fraktion (15) der mit Hochdruck gereinigten Luft in einer ersten Reihe von Durchlässen der Austauschleitung gekühlt und dann mit einer Einlasstemperatur verdichtet wird, die gleich einer Zwischentemperatur der Austauschleitung in einem mit der zweiten Turbine mechanisch verbundenen kalten Verdichter (C2) ist, wobei der heiße Verdichter mechanisch mit der ersten Turbine verbunden ist,
    i) der kalte Verdichter die zweite Luftfraktion bei einer Temperatur oberhalb der Einlasstemperatur abgibt, und die so verdichtete zweite Luftfraktion wieder in eine zweite Reihe von Durchlässen der Austauschleitung, gegebenenfalls an einem Zwischenpunkt derselben, eingeführt wird, wobei zumindest ein Teil der zweiten Fraktion kondensiert oder pseudo-kondensiert,
    j) mindestens eine Flüssigkeit unter Druck aus einer der Säulen der Doppel- oder Dreifachsäule in der Austauschleitung bei einer Verdampfungstemperatur verdampft oder pseudo-verdampft wird, und dadurch gekennzeichnet, dass, wenn, gegebenenfalls nur wenn, der kalte Verdichter nicht funktioniert, die Flüssigkeit unter Druck aus einer der Säulen der Doppel- oder Dreifachsäule in der Austauschleitung verdampft oder pseudo-verdampft wird und ein erster Teil (13) der mit Hochdruck gereinigten Luft an den heißen Verdichter geleitet wird, in der ersten Reihe von Durchlässen der Austauschleitung (91) abkühlt, die Austauschleitung verlässt, ohne den kalten Verdichter zu passieren, und in die Austauschleitung in der zweiten Reihe von Durchlässen eintritt, wobei sich die Luft, die diese beiden Reihen von Durchlässen passiert hat, verflüssigt und an mindestens eine Säule der Doppel- oder Dreifachsäule geleitet wird.
  2. Verfahren nach Anspruch 1, wobei, wenn der kalte Verdichter nicht funktioniert, ein zweiter Teil der gereinigten Luft sich bei Hochdruck bei einer Zwischentemperatur der Austauschleitung abkühlt, in einem Ventil entspannt und dann in die Atmosphäre geleitet wird, ohne vom heißen Verdichter verdichtet worden zu sein, vorzugsweise nach Erwärmung in der Austauschleitung.
  3. Verfahren nach einem der vorstehenden Ansprüche, wobei, wenn, gegebenenfalls nur wenn der kalte Verdichter (C2) nicht funktioniert, Luft aus dem heißen Verdichter in der Austauschleitung (91) abkühlt und in der mit dem heißen Verdichter (C1) gekoppelten Turbine (T1) entspannt wird, bevor sie zumindest teilweise an die mit mittlerem Druck arbeitende Säule geleitet wird.
  4. Verfahren nach einem der vorstehenden Ansprüche, wobei, wenn, gegebenenfalls nur wenn der kalte Verdichter (C2) nicht funktioniert, Luft, die den heißen Verdichter umgangen hat, in der Austauschleitung (91) abkühlt und in der mit dem heißen Verdichter (C1) gekoppelten Turbine entspannt wird, bevor sie zumindest teilweise an die mit mittlerem Druck arbeitende Säule geleitet wird.
  5. Anlage zur Luftabscheidung durch kryogene Destillation, umfassend:
    a) Doppel- oder Dreifachsäule zur Luftabscheidung, wobei deren mit dem höchsten Druck arbeitende Säule bei einem sogenannten mittleren Druck arbeitet,
    b) eine Austauschleitung (91),
    c) einen heißen Verdichter (C1) und einen kalten Verdichter (C2),
    d) eine erste Turbine (T1) und eine zweite Turbine (T2), die jeweils mit einem der Verdichter gekoppelt sind,
    e) Mittel zum Bringen der gesamten Luft auf einen höheren Hochdruck als den mittleren Druck und Mittel zum Reinigen mit diesem Hochdruck,
    f) Mittel zum Teilen der gereinigten Luft in zwei Fraktionen und zum Leiten einer ersten Fraktion an den heißen Verdichter und einer zweiten Fraktion an den kalten Verdichter nach dem Abkühlen in einer ersten Reihe von Durchlässen der Austauschleitung,
    g) Mittel zum Wiedereinführen der zweiten Luftfraktion aus dem kalten Verdichter in eine zweite Reihe von Durchlässen der Austauschleitung, um sich dort abzukühlen,
    h) Mittel zum Leiten mindestens einer Flüssigkeit unter Druck von einer der Säulen in die Austauschleitung,
    i) Mittel zum Leiten der gekühlten Luft aus dem heißen Verdichter in die Austauschleitung an der ersten und zweiten Turbine
    dadurch gekennzeichnet, dass sie Folgendes umfasst:
    j) Umgehungsmittel (3a, 5) zum Umgehen des kalten Verdichters (C2), wobei diese Mittel mit der Austauschleitung (91) und dem Auslass des kalten Verdichters verbunden sind, so dass die Luft von der ersten Reihe von Durchlässen zur zweiten Reihe passiert, ohne den kalten Verdichter zu passieren,
    k) Mittel zum Verbinden des Auslasses des heißen Verdichters mit der ersten Reihe von Durchlässen der Austauschleitung,
    und Mittel, um die Verwendung dieser Umgehungsmittel und dieser Mittel zum Verbinden des Auslasses des heißen Verdichters mit der ersten Reihe von Durchlässen der Austauschleitung zu ermöglichen, wenn der kalte Verdichter nicht funktioniert.
  6. Anlage nach Anspruch 5, umfassend ein Ventil (6), Mittel zum Leiten von mit Hochdruck gereinigter und nicht verdichteter Luft zu der Austauschleitung, um dort abzukühlen und dann zu dem Ventil und Mittel zum Leiten der entspannten Luft in das Ventil zur Destillation und/oder in die Atmosphäre.
  7. Anlage nach Anspruch 5 oder 6, umfassend Mittel (6, 8, 29, 35, 37) zum Umgehen der ersten und zweiten Turbine (T1, T2), wobei diese Mittel mit dem Auslass des heißen Verdichters (C1) und dem kalten Ende der Austauschleitung (91) und/oder des Säulensystems verbunden sind.
  8. Anlage nach Anspruch 7, wobei die Mittel (6, 8, 29, 35, 37) zum Umgehen der ersten und zweiten Turbine mit dem Einlass des kalten Verdichters (C1) verbunden sind.
  9. Anlage nach Anspruch 6, wobei das Ventil (6) mit dem Ein- und Auslass von mindestens einer der Turbinen verbunden ist.
  10. Anlage nach einem der Ansprüche 5 bis 9, umfassend Mittel zum Verhindern des Eindringens von Luft in den Einlass einer der Turbinen.
  11. Anlage nach einem der Ansprüche 5 bis 10, wobei die Umgehungsmittel ein Ventil (5) umfassen, das die erste Reihe von Durchlässen mit der zweiten Reihe von Durchlässen verbindet.
EP10754355.5A 2009-07-20 2010-07-16 Verfahren und vorrichtung zur lufttrennung durch kryogene destillation Active EP2457047B1 (de)

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FR0955007A FR2948184B1 (fr) 2009-07-20 2009-07-20 Procede et appareil de separation d'air par distillation cryogenique
PCT/FR2010/051492 WO2011010049A2 (fr) 2009-07-20 2010-07-16 Procédé et appareil de séparation d'air par distillation cryogénique

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EP2597409B1 (de) * 2011-11-24 2015-01-14 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturdestillation
FR2985305B1 (fr) * 2012-01-03 2017-12-22 L'air Liquide Sa Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de production de gaz de l'air sous pression utilisant un surpresseur cryogenique
FR3069916B1 (fr) * 2017-08-03 2021-12-31 Air Liquide Procede de degivrage d'un appareil de separation d'air par distillation cryogenique et appareil adapte pour etre degivre par ce procede
EP3438584B1 (de) * 2017-08-03 2020-03-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und gerät zur trennung von luft durch kryogene destillation
CN113195991B (zh) * 2018-12-19 2023-05-02 乔治洛德方法研究和开发液化空气有限公司 低温空气分离单元的启动方法和相关联的空气分离单元

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CA2695817A1 (en) * 2007-08-10 2009-02-19 Alain Guillard Process and apparatus for the separation of air by cryogenic distillation

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Publication number Publication date
FR2948184B1 (fr) 2016-04-15
EP2457047A2 (de) 2012-05-30
JP2012533725A (ja) 2012-12-27
WO2011010049A3 (fr) 2012-11-15
CN102741635A (zh) 2012-10-17
US9091478B2 (en) 2015-07-28
US20120118006A1 (en) 2012-05-17
CN102741635B (zh) 2014-12-10
WO2011010049A2 (fr) 2011-01-27
FR2948184A1 (fr) 2011-01-21

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