EP2504647B1 - Procédé et appareil de compression et de refroidissement d'air - Google Patents

Procédé et appareil de compression et de refroidissement d'air Download PDF

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Publication number
EP2504647B1
EP2504647B1 EP10799091.3A EP10799091A EP2504647B1 EP 2504647 B1 EP2504647 B1 EP 2504647B1 EP 10799091 A EP10799091 A EP 10799091A EP 2504647 B1 EP2504647 B1 EP 2504647B1
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EP
European Patent Office
Prior art keywords
exchanger
air
water
gaseous nitrogen
facility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10799091.3A
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German (de)
English (en)
French (fr)
Other versions
EP2504647A2 (fr
Inventor
Benoit Davidian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP2504647A2 publication Critical patent/EP2504647A2/fr
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Publication of EP2504647B1 publication Critical patent/EP2504647B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—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
    • F25J3/04006—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
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04236—Integration of different exchangers in a single core, so-called integrated cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
    • 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
    • F25J2230/04—Compressor cooling arrangement, e.g. inter- or after-stage cooling or condensate removal
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream

Definitions

  • the present invention relates to a method and apparatus for compressing and cooling air by indirect heat exchange.
  • Gaseous products from the cold box preferably all the gaseous products, will be used to cool the moist air in an exchanger. Part of the condensed water during the cooling of the air in the proposed system, as well as that resulting from the compression of the gas, will be injected into gases from the cold box.
  • This system eliminates the need for a dryer or a refrigeration unit, associated refrigerant issues, possibly a water / nitrogen tower.
  • the exchanger can be integrated in the main exchange line where the air cools to a cryogenic temperature upstream of the distillation.
  • an air separation method comprising a method of compressing and cooling air according to one of claims 1 to 7 wherein the purified air is cooled in a second exchanger and sent to a column of the cryogenic separation plant, at least one product is withdrawn from the installation and reheated in the second exchanger and then in the first exchanger and at least one product is withdrawn from the installation, reheated, possibly vaporized in the second exchanger and then, in gaseous form, in the first exchanger.
  • a cryogenic air distillation separation installation comprising an apparatus according to one of claims 9 to 11, a system comprising at least one column, a second exchanger, a conduit for bring air from the second one column exchanger of the system and a line for supplying a distillation product to the second exchanger.
  • the invention is described in the case of a nitrogen generator, but can be extrapolated to other types of generators.
  • the air 1 is sent to a compressor 3.
  • the compressor 3 may be an isothermal compressor, but the example shows an adiabatic compressor.
  • the compressed air 5 to 9 bar abs and 320 ° C is cooled in a compressor refrigerant 6 by indirect heat exchange, at 27 ° C, and the condensed water is separated in a first separator 7 which can be integrated into the refrigerant compressor.
  • the condensed water 11 is sent to a buffer capacity 25.
  • the air 9 cools in a first exchanger 13 with indirect heat exchange, for example a plate and wave exchanger, against all the gaseous fluids 37, 39, 41 from the cold box 33.
  • the gaseous fluids are heated in the first exchanger 13 at 21 ° C.
  • the condensed water 19 in the second separator 15 is sent to the buffer capacity 25.
  • the air thus cooled 17 to 10 ° C. then goes to the overhead purification 45.
  • the gas production 37, 43 is sent into the countercurrent exchanger.
  • the flow 37 is pure nitrogen gas and the flow 43 is rich vaporized liquid from the top condenser of a single column 47 of nitrogen production, shown schematically. It will be readily understood that in the case of application to a double column, the flow 37 could be oxygen gas or nitrogen gas and, according to the invention, the flow 43 would be nitrogen gas more or less pure.
  • the waste fluid 43 at 10 ° C. and at atmospheric pressure (at the pressure drop near the equipment downstream) is split into two parts 39, 41: a part 41 which remains dry which serves to regenerate the purification 45 after reheating in the heater 42, another portion 39 which will be moistened and cooled by injecting water 29, 31 from the condensate. All the water contained in the gas 39 comes from the condensation of water in the air, either upstream or downstream of the first exchanger (13).
  • the injection of water can be done either completely before the exchanger (flow 29), or in front (flow 29) until the gas is saturated, then along the exchanger (flow 31), possibly with several injection points.
  • the injection may possibly be done using a pump 23, or directly using the condensate under pressure.
  • the buffer capacity 25 may be optional.
  • the separator 7 or the separator 15 can be deleted, for example by being integrated with another equipment.
  • the amount of water injected will be limited so as to be at most saturated at the outlet of exchanger 13, to avoid sending droplets of water into the atmosphere. This quantity can be evaluated by calculation according to the operating parameters of the exchanger.
  • the temperature of the air 17 chosen at the outlet of the exchanger 13 before the purification will be such that the saturated (or over-saturated) water temperature at the inlet of the exchanger fluid remains positive, to avoid the risk of ice formation and therefore clogging.
  • the water used will come from the ambient air (moisture) recovered in the condensates 11, 19. There will be no need for special treatment of these condensates. There will be no permanent water replenishment from outside the system.
  • a top-up of water is used, only if necessary during a very dry period.
  • the first air-cooling exchanger 13 can be integrated with the main exchange line 35 (second exchanger) of the cold box where the purified air 17 from the purification 45 is cooled upstream of the distillation columns and where the residual nitrogen 43 is heated up.
  • the compressed air will then be withdrawn at an intermediate level of the integrated heat exchanger (13 and 35), then sent to the purification before returning to the exchange line, and the water will be injected into the fluid to be saturated along the upper part of the exchanger.
  • the introduction of the liquid can be done according to conventional liquid injection techniques in a gas in a plate heat exchanger, typically used for example for two-phase introductions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP10799091.3A 2009-11-23 2010-11-22 Procédé et appareil de compression et de refroidissement d'air Active EP2504647B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0958248 2009-11-23
PCT/FR2010/052481 WO2011061459A2 (fr) 2009-11-23 2010-11-22 Procede et appareil de compression et de refroidissement d'air

Publications (2)

Publication Number Publication Date
EP2504647A2 EP2504647A2 (fr) 2012-10-03
EP2504647B1 true EP2504647B1 (fr) 2019-02-20

Family

ID=42357816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10799091.3A Active EP2504647B1 (fr) 2009-11-23 2010-11-22 Procédé et appareil de compression et de refroidissement d'air

Country Status (5)

Country Link
US (1) US20120279255A1 (zh)
EP (1) EP2504647B1 (zh)
JP (1) JP2013525718A (zh)
CN (1) CN103109145B (zh)
WO (1) WO2011061459A2 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982356A1 (fr) * 2011-11-09 2013-05-10 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
CN104132506A (zh) * 2014-05-25 2014-11-05 刘晓 超级空气净化应用系统
DE102018205890A1 (de) * 2018-04-18 2019-10-24 Röchling Automotive SE & Co. KG Kontinuierlich arbeitende Wasser-Gewinnungsvorrichtung für ein Kraftfahrzeug
FR3099151B1 (fr) * 2019-07-24 2021-06-18 Air Liquide Appareil de compression et de separation et procede de compression
JP6775207B1 (ja) * 2020-04-03 2020-10-28 田渕海運株式会社 船倉乾燥システムおよび船倉乾燥方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224209A (en) * 1960-01-28 1965-12-21 Union Carbide Corp Process and apparatus for purifying and separating compressed gas mixtures
GB998751A (en) * 1963-07-18 1965-07-21 British Oxygen Co Ltd Air separation process
US3358460A (en) * 1965-10-08 1967-12-19 Air Reduction Nitrogen liquefaction with plural work expansion of feed as refrigerant
US3967464A (en) * 1974-07-22 1976-07-06 Air Products And Chemicals, Inc. Air separation process and system utilizing pressure-swing driers
US5251451A (en) * 1992-08-28 1993-10-12 Air Products And Chemicals, Inc. Multiple reboiler, double column, air boosted, elevated pressure air separation cycle and its integration with gas turbines
JPH06185855A (ja) * 1992-12-18 1994-07-08 Hitachi Ltd 原料空気冷却方法
FR2753636B1 (fr) * 1996-09-25 2001-11-09 Air Liquide Procede et installation pour l'alimentation pour un appareil de separation d'air
FR2789162B1 (fr) * 1999-02-01 2001-11-09 Air Liquide Procede de separation d'air par distillation cryogenique
US6295838B1 (en) * 2000-08-16 2001-10-02 Praxair Technology, Inc. Cryogenic air separation and gas turbine integration using heated nitrogen
US6912859B2 (en) * 2002-02-12 2005-07-05 Air Liquide Process And Construction, Inc. Method and apparatus for using a main air compressor to supplement a chill water system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2011061459A2 (fr) 2011-05-26
CN103109145B (zh) 2015-10-14
CN103109145A (zh) 2013-05-15
EP2504647A2 (fr) 2012-10-03
US20120279255A1 (en) 2012-11-08
WO2011061459A3 (fr) 2014-03-20
JP2013525718A (ja) 2013-06-20

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