EP2545335A2 - Verfahren und integrierte vorrichtung zur trennung von luft und zur erhitzung eines gases in aus einer lufttrennungsvorrichtung stammender luft - Google Patents

Verfahren und integrierte vorrichtung zur trennung von luft und zur erhitzung eines gases in aus einer lufttrennungsvorrichtung stammender luft

Info

Publication number
EP2545335A2
EP2545335A2 EP11712959A EP11712959A EP2545335A2 EP 2545335 A2 EP2545335 A2 EP 2545335A2 EP 11712959 A EP11712959 A EP 11712959A EP 11712959 A EP11712959 A EP 11712959A EP 2545335 A2 EP2545335 A2 EP 2545335A2
Authority
EP
European Patent Office
Prior art keywords
water
air
gas
exchanger
preheating
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.)
Withdrawn
Application number
EP11712959A
Other languages
English (en)
French (fr)
Inventor
Richard Dubettier-Grenier
Jean-Pierre Tranier
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP2545335A2 publication Critical patent/EP2545335A2/de
Withdrawn legal-status Critical Current

Links

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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04533—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the direct combustion of fuels in a power plant, so-called "oxyfuel combustion"
    • 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
    • F25J3/04048—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
    • F25J3/04066—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 oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—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
    • 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
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • 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
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • F25J3/04545—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels for the gasification of solid or heavy liquid fuels, e.g. integrated gasification combined cycle [IGCC]
    • 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
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • 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
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/70—Steam turbine, e.g. used in a Rankine cycle
    • 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
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/02—Integration in an installation for exchanging heat, e.g. for waste heat recovery

Definitions

  • the present invention relates to a method and an integrated apparatus for separating air and air from an air separation apparatus. heating a gas from the air from an air separation apparatus. It is frequently necessary to heat one of the gaseous products of an air separation apparatus to bring it to a temperature of use.
  • heating a gas from the air from an air separation apparatus It is frequently necessary to heat one of the gaseous products of an air separation apparatus to bring it to a temperature of use.
  • the fumes of the boiler can be used;
  • the overall efficiency of the installation can be improved by recovering calories from the compressors of the air separation unit.
  • An object of the invention is to find a heating means at low cost and substantially constant temperature for efficient heat exchange to heat a gas air.
  • an integrated apparatus for separating air and heating an air gas, produced by air separation comprising an air separation apparatus, a heat exchanger, a pipe for sending gas from the air to the heat exchanger and a pipe for sending water therein, the pipe to send the water to the heat exchanger being connected to the water inlet or at the water outlet of a water preheating exchanger and / or at the water inlet or the water outlet of a water deaerator, the preheating exchanger and or where the degasser is connected to an oxy-fuel boiler for supplying water therein and for receiving water from the boiler, the boiler also being connected to the separation apparatus for receiving an enriched gas in oxygen.
  • the pipe sending water to the heat exchanger is connected to the preheated water outlet of the water preheating exchanger or to the degassed water outlet of the water deaerator.
  • the air gas is the oxygen enriched gas and a pipe connects the heat exchanger to the boiler to send the oxygen enriched gas heated.
  • an air separation apparatus comprising a compressed air supply pipe, a purification unit and a cold box, containing a distillation column system, a pipe for producing a nitrogen-rich gas connecting the cold box and the purification unit and in which the heat exchanger is connected to the production line so that the nitrogen-rich gas heats upstream of the purification unit.
  • the air separation apparatus comprises a compressed air supply pipe, a purification unit, a cold box, containing a distillation column system, the preheating exchanger being connected to the pipe of supply of compressed air and / or a gas line of air from the cold box to ensure the heating of water for the boiler and possibly the degasser.
  • the apparatus comprises means for sending the preheated water in the preheating exchanger to the degasser and means for sending the preheated and degassed water from the degasser to the boiler.
  • an integrated method for separating air and heating a gas produced by air separation in which air is separated in a separating apparatus.
  • air an oxygen enriched gas is sent from the air separation apparatus to a boiler
  • air gas from the air separation apparatus is heated by indirect heat exchange with water, in the form of a liquid to be preheated or preheated taken downstream of a water preheating exchanger and / or with water in the form of the liquid to be degassed or degassed from a water deaerator, preheating exchanger and / or the degasser treating water for and coming from an oxy-fuel boiler (19), the water used for preheating the air being preferably at a temperature between 100 and 200 ° C.
  • the water used to heat the gas in the air has been heated in the preheating exchanger and possibly degassed in the degasser.
  • air for the air separation apparatus is compressed in a compressor and the air is cooled in the preheating exchanger by heat exchange with water from the boiler.
  • the air is compressed in a compressor, it is then purified in a purification unit and the purification unit is regenerated with nitrogen from the air separation apparatus, which has been heated by water in the heat exchanger.
  • the water sent to the heat exchanger is at a pressure between 5 and 20 bars absolute.
  • FIG 3 there is shown an air separation apparatus comprising a compressor 1, an exchanger 5, a purification unit 6 and a cold box 9. All the air 3, compressed in the compressor, is cooled in the air. exchanger 5 by heat exchange with water in liquid form for and from an oxy-fuel boiler 19 supplied with oxygen 17 and a fuel (not shown). The boiler produces fumes (not shown) that are recycled or treated.
  • the cooled air is purified in the purification unit 6 to form purified air 7 and is then separated in the cold box 9 containing an exchanger and a system of columns. From the cold box are produced a flow rich in oxygen 1 7, which is sent to the oxy-fuel boiler 19, and a gas flow rich in nitrogen 1 1 at room temperature, for example between 0 and 30 ° C.
  • the nitrogen is heated in an indirect heat exchanger 13 by means of a flow of hot water in liquid form 29 at a temperature between 100 and 200 ° C.
  • the hot water 29 enters the exchanger 13 at between 100 and 200 ° C and a pressure between 5 and 20 bar absolute to be cooled to between 20 and 60 ° C.
  • the heated nitrogen serves to regenerate the purification unit 5.
  • the hot water 29 at between 100 and 200 ° C originates in the case illustrated downstream of a water degasser 27. It is also possible to take water just upstream of the degasser, downstream of the exchanger 5 which serves to preheat the water (and possibly inject steam into this water to increase its temperature to the required temperature) or upstream of this exchanger 5.
  • the water which is not taken to heat the nitrogen is pumped into a pump 33 at a high pressure and sent to the boiler.
  • the water 21 leaving the boiler 19 at between 25 and 60 ° C is pumped at a low pressure by the pump 23 to be sent to the preheater 5.
  • the water which was used to heat the nitrogen is returned upstream of the pump 23 as flow 35.
  • FIG. 4 there is shown an air separation apparatus comprising a compressor 1, an exchanger 5, a purification unit 6 and a cold box 9. All the air 3, compressed in the compressor, is cooled in the exchanger 5 by heat exchange with water in liquid form 25, for an oxy-fuel combustion boiler 19. The cooled air is purified in the purification unit 6 to form clean air 7 and then is separated in the cold box 9 containing an exchanger and a system of columns. From the cold box is produced a high oxygen flow 17, which is sent to the oxycombustion boiler 19, and a gas flow rich in nitrogen at room temperature.
  • the flow 17 at between 0 and 30 ° C is heated by means of a flow of hot water 29 in the exchanger 43 to heat the oxygen to between 100 and 200 ° C and to cool the water to between 10 and 30 ° C.
  • the hot water 29 at between 100 and 200 ° C. and at a pressure between 5 and 20 bar comes in the case illustrated downstream of a water degasser 27. It is also possible to take water just upstream of the degasser, downstream of the exchanger 5 which serves to preheat the water or upstream of this exchanger 5.
  • the water that is not taken to heat the oxygen is pumped into a pump 33 at a high pressure and sent to the boiler.
  • the water 21 leaving the boiler 19 at between 25 ° C and 60 ° C is pumped at a low pressure by the pump 23 to be sent to the preheater 5.
  • the water used to heat the oxygen is returned upstream of the pump 23 as flow 35.
  • the apparatus according to the invention does not involve a gas turbine and all the air from the compressor of the air separation apparatus is sent to the separation.

Landscapes

  • 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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP11712959A 2010-03-09 2011-03-03 Verfahren und integrierte vorrichtung zur trennung von luft und zur erhitzung eines gases in aus einer lufttrennungsvorrichtung stammender luft Withdrawn EP2545335A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1051676A FR2957408B1 (fr) 2010-03-09 2010-03-09 Procede et appareil de chauffage d'un gaz de l'air provenant d'un appareil de separation d'air
PCT/FR2011/050445 WO2011110775A2 (fr) 2010-03-09 2011-03-03 Procede et appareil integres de separation d'air et de chauffage d'un gaz de l'air provenant d'un appareil de separation d'air

Publications (1)

Publication Number Publication Date
EP2545335A2 true EP2545335A2 (de) 2013-01-16

Family

ID=42985482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11712959A Withdrawn EP2545335A2 (de) 2010-03-09 2011-03-03 Verfahren und integrierte vorrichtung zur trennung von luft und zur erhitzung eines gases in aus einer lufttrennungsvorrichtung stammender luft

Country Status (9)

Country Link
US (1) US9360251B2 (de)
EP (1) EP2545335A2 (de)
JP (1) JP5788421B2 (de)
CN (2) CN104896874A (de)
AU (1) AU2011225908B2 (de)
CA (1) CA2789830A1 (de)
FR (1) FR2957408B1 (de)
WO (1) WO2011110775A2 (de)
ZA (1) ZA201206476B (de)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
FR2957408B1 (fr) * 2010-03-09 2015-07-17 Air Liquide Procede et appareil de chauffage d'un gaz de l'air provenant d'un appareil de separation d'air
PL2873938T3 (pl) * 2013-11-14 2021-11-02 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Sposób i urządzenie do oddzielania powietrza przez destylację kriogeniczną
FR3032231B1 (fr) * 2015-02-02 2018-09-14 Ifp Energies Now Systeme et procede de stockage d'energie sous forme d'air comprime dans des tubes integres dans une cuve contenant de l'eau et de la vapeur d'eau
CN107101458B (zh) * 2017-05-05 2019-06-28 山东京博众诚清洁能源有限公司 一种空分与造气冷热量联用系统
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FR2957408A1 (fr) 2011-09-16
JP2013534605A (ja) 2013-09-05
JP5788421B2 (ja) 2015-09-30
CN103097842B (zh) 2015-12-09
US9360251B2 (en) 2016-06-07
AU2011225908B2 (en) 2015-02-12
WO2011110775A3 (fr) 2015-07-09
CN103097842A (zh) 2013-05-08
CN104896874A (zh) 2015-09-09
US20120324944A1 (en) 2012-12-27
FR2957408B1 (fr) 2015-07-17
AU2011225908A1 (en) 2012-09-13
WO2011110775A2 (fr) 2011-09-15
ZA201206476B (en) 2015-11-25

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