EP1269094A2 - Verfahren und vorrichtung zur energieerzeugung - Google Patents

Verfahren und vorrichtung zur energieerzeugung

Info

Publication number
EP1269094A2
EP1269094A2 EP01917197A EP01917197A EP1269094A2 EP 1269094 A2 EP1269094 A2 EP 1269094A2 EP 01917197 A EP01917197 A EP 01917197A EP 01917197 A EP01917197 A EP 01917197A EP 1269094 A2 EP1269094 A2 EP 1269094A2
Authority
EP
European Patent Office
Prior art keywords
air
column
enriched
compressor
gas
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.)
Granted
Application number
EP01917197A
Other languages
English (en)
French (fr)
Other versions
EP1269094B1 (de
Inventor
Jean-Renaud Brugerolle
François Fuentes
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8848322&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1269094(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Liquide SA, LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1269094A2 publication Critical patent/EP1269094A2/de
Application granted granted Critical
Publication of EP1269094B1 publication Critical patent/EP1269094B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • F25J3/04248—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
    • F25J3/04006—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
    • F25J3/04054—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
    • 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
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04121—Steam turbine as the prime mechanical driver
    • 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
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04127—Gas turbine as the prime mechanical driver
    • 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
    • F25J3/04296—Claude expansion, i.e. expanded into the main or 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
    • 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
    • F25J3/04309—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 nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—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
    • F25J3/04309—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 nitrogen
    • F25J3/04315—Lowest pressure or impure nitrogen, so-called waste nitrogen expansion
    • 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
    • F25J3/04406—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 a dual pressure main column system
    • F25J3/04412—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 a dual pressure main column system in a classical double column flowsheet, 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F25J3/04575—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating for a gas expansion plant, e.g. dilution of the combustion gas in a gas turbine
    • 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
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/046—Completely integrated air feed compression, i.e. common MAC
    • 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
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/04606—Partially integrated air feed compression, i.e. independent MAC for the air fractionation unit plus additional air feed 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
    • 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
    • F25J2200/38—Processes or apparatus using separation by rectification using pre-separation or distributed distillation before a main column system, e.g. in a at least a double column system
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2

Definitions

  • the present invention relates to a method and an installation for generating energy.
  • it relates to a method and an installation for generating energy in which an air separation device sends a flow of nitrogen-enriched gas upstream of an expansion machine which generates energy by relaxing combustion gases.
  • air is taken from the air compressor of the gas turbine to at least partially supply the air separation unit which in return sends nitrogen either in the fuel intended for the combustion chamber is upstream of the turbine expansion machine.
  • EP-A-0465Î93 describes a process in which the compressor coupled to the expansion machine does not send air to the air separation device.
  • An object of the present invention is to simplify the design of the combustion chamber. Another object of the invention is to reduce the production of NO x by the gas turbine.
  • an energy generation method using an energy generation apparatus comprising the steps of: i) compressing air in a compressor; ii) sending at least part of the compressed air in the compressor to an air separation apparatus to produce at least one fluid enriched in oxygen and at least one gas enriched in nitrogen and also containing oxygen; iii) sending fuel and at least part of the nitrogen-enriched gas to a combustion chamber in order to produce combustion gases, the compressed air in the compressor not being sent to the combustion chamber; and, iv) expanding the combustion gases in an expansion machine coupled to the compressor to recover energy; characterized in that the nitrogen-enriched gas is compressed to a pressure between 8 and 30 bar before being sent to the combustion chamber.
  • - part of the air sent to the air separation unit comes from a make-up compressor or from a source of pressurized air;
  • the air of the make-up compressor is mixed with at least part of the gas enriched in nitrogen before being sent to the combustion chamber; - At least part of the oxygen-enriched gas is sent to gasify a fuel containing carbon so as to generate a flow of fuel;
  • the only gas sent to the combustion chamber apart from the fuel is the gas enriched in nitrogen;
  • the nitrogen-enriched gas contains at least 5 mol% and at most 18 mol% of oxygen
  • the other gas flow rate comprises from 2 to 100 mol% of oxygen
  • the gas enriched in nitrogen contains less than 18 mol% of oxygen
  • the nitrogen-enriched gas contains less than 5 mol% of oxygen
  • the air is compressed by the compressor to between 8 and 20 bar;
  • an energy generation installation comprising: i) a compressor; ii) an expansion machine coupled to the compressor; iii) a combustion chamber; iv) an air separation device; v) means for sending air from the compressor to the air separation apparatus; vi) means for sending a gas enriched in nitrogen and containing oxygen from the air separation apparatus to the combustion chamber and no means for sending air from the compressor to the combustion chamber; characterized in that it comprises means for compressing the gas enriched in nitrogen before sending it to the combustion chamber.
  • an air separation process is provided in an apparatus comprising at least three columns in which compressed and purified air is sent to a first column a flow rate is extracted from the first column enriched in nitrogen and an oxygen-enriched liquid, the oxygen-enriched flow is sent to a second column, a flow is taken from the head of the second column, at least part of the tank liquid is sent from the second column to third column and a second oxygen-enriched flow and a second nitrogen-enriched flow from the third column are drawn off, the third column operating at a lower pressure than the second column and being thermally connected thereto by means of a reboiler condenser .
  • the first column operates at substantially the same pressure as the second column
  • an air separation installation comprising at least three columns, means for sending air to a first column, means for sending an oxygen-enriched flow rate from the first column to the second column, a reboiler-condenser thermally connecting the head of the second column and the tank of the third column, means for withdrawing a flow rate from the head of the second column, means for sending at least part of the liquid from the tank of the second column to a third column and means for withdrawing a second flow enriched in oxygen and a second flow enriched in nitrogen from the third column characterized in that it comprises means for sending compressed and purified air to the first column above at least one theoretical plate thereof, a tank reboiler of the first column and means for sending a heating gas to the reboiler their tank.
  • the oxidizer can be a mixture of residual nitrogen from an ASU and make-up air in order to control the oxygen content.
  • FIG 1 is a diagram of an energy production installation according to the invention
  • Figure 2 is a diagram of an air separation installation (ASU) according to the invention.
  • ASU air separation installation
  • This ASU can typically be used in an energy production facility like the one in Figure 1.
  • a compressor 1 coupled to an expansion machine 3 compresses air at a pressure between 8 and 20 bar. All this air is cooled, purified and sent to an air separation apparatus by cryogenic distillation 5 which produces a flow of gaseous or liquid oxygen 7, a flow of gaseous or liquid nitrogen 9 and a flow of residual gaseous nitrogen 11 containing 91 mol% of nitrogen and 9 mol% of oxygen at between 3 and 11 bar.
  • the residual nitrogen is warmed to room temperature and compressed in a compressor 13 to a pressure between 8 and 30 bar.
  • the air separation apparatus can separate the air by permeation or adsorption.
  • At least part of the compressed nitrogen gas 15 is sent with a flow of natural gas 17 to a combustion chamber 19.
  • the oxygen contained in the nitrogen gas serves as fuel.
  • an air flow 25 at a pressure between 8 and 30 bar coming from an auxiliary compressor 21 or from another source of pressurized air is sent to the combustion chamber 19.
  • the oxygen content of the residual nitrogen may be lower depending on the quantity of air sent to the combustion chamber 19; the nitrogen-enriched flow rate may comprise only between 2 and 5% of oxygen.
  • Another air flow 23 from this compressor and / or a compressed residual nitrogen flow 27 can cool the interstage of the expansion machine 3 or of the nitrogen compressor 13.
  • Another air flow 29 from this compressor and / or a flow of compressed residual nitrogen 31 can be mixed with the combustion gases 33 and the whole is then sent to the expansion machine.
  • the combustion chamber does not receive air from compressor 1.
  • Another air flow 37 from this compressor and / or a flow of compressed residual nitrogen 39 can cool the rotor 41 of the expansion machine 3 or the walls of the combustion chamber 19.
  • Part of the air 35 of the make-up compressor 21 can be separated in the air separation apparatus 5. In this way, the apparatus can be supplied with air when the compressor 1 is not operating. Otherwise, this additional air flow from the compressor 21 can make it possible to increase the oxygen production of the device 5.
  • Air from the compressor 1 may possibly not be sent to the air separation device 5 because it is used to cool various elements of the gas turbine. This part of the air can represent about 25% of the compressed air.
  • the air separation device can be wholly or partially supplied with air from a dedicated compressor, at least for start-up.
  • Figure 2 shows an air separation device comprising a first column 101 operating between 4 and 30 bar, a second column 102 operating between 4 and 30 bar and a third column 103 operating between 1.3 and 10 bar.
  • This device could serve as a separation device 5 in FIG. 1.
  • the columns 101, 102 operate above 8 bar.
  • the air from compressor 1 is purified and divided into two 105,107.
  • a flow 105 cools in the main exchanger 109 and is sent to the head of the first column 101 as the only supply.
  • the other flow 107 is boosted in the booster 127 (which can be a cold booster) and cooled in the exchanger
  • the second column is supplied to the tank with a few theoretical trays below the air partially condensed by a flow of liquid coming from the tank of the first column 101.
  • the head gas of the first column constitutes depleted air 115, therefore this nitrogen-enriched flow can be intended for the compressor 13 because it is almost at the same pressure as the supply air.
  • the liquid in the tank of the second column is expanded and sent to an intermediate level of the third column as the only supply.
  • the tank of the third column is thermally connected with the head of the second column by means of a vaporizer-condenser 113.
  • the overhead gas of the second column 102 is high pressure nitrogen 119.
  • Gaseous oxygen 121 is withdrawn from the bottom of the column 103.
  • this flow rate can be withdrawn in liquid form, pressurized and vaporized in the exchanger 109.
  • An overhead gas 117 from the third column constitutes a flow enriched in nitrogen at low pressure and can be used to cool various elements such as the turbine stages, the rotor etc. rather than the depleted air 115 which is at high pressure.
  • the device must be kept cold by a means not shown which can be a Claude turbine sending air to the column 101,102, a blowing turbine sending air to the column 103, a turbine residual nitrogen
  • the second and third columns can be replaced by a triple column.
  • the diagram in Figure 2 has been described in the context of an integrated process in which all the air from the gas turbine compressor is sent to the ASU but it is obvious that the diagram can be used in cases where all or part of the air from this compressor is sent to the combustion chamber or even if the ASU is not integrated with another appliance.
  • the compressors 13, 21 and 127 can be coupled to one (or more) turbine (s) of the installation, for example a steam turbine.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Air Supply (AREA)
EP01917197A 2000-03-21 2001-03-21 Verfahren und vorrichtung zur energieerzeugung Revoked EP1269094B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0003583A FR2806755B1 (fr) 2000-03-21 2000-03-21 Procede et installation de generation d'energie utilisant un appareil de separation d'air
FR0003583 2000-03-21
PCT/FR2001/000839 WO2001071172A2 (fr) 2000-03-21 2001-03-21 Procede et installation de generation d'energie

Publications (2)

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EP1269094A2 true EP1269094A2 (de) 2003-01-02
EP1269094B1 EP1269094B1 (de) 2006-05-24

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EP01917197A Revoked EP1269094B1 (de) 2000-03-21 2001-03-21 Verfahren und vorrichtung zur energieerzeugung

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US (1) US6718794B2 (de)
EP (1) EP1269094B1 (de)
JP (1) JP4704655B2 (de)
DE (1) DE60119916T2 (de)
FR (1) FR2806755B1 (de)
WO (1) WO2001071172A2 (de)

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EP3078909B1 (de) 2002-10-10 2022-05-11 LPP Combustion, LLC Verfahren zum verdampfung von flüssigbrennstoffen zur verbrennung
US7197894B2 (en) * 2004-02-13 2007-04-03 L'air Liquide, Societe Anonyme A' Directorie Et Conseil De Survelliance Pour L'etude Et, L'exploltation Des Procedes Georges, Claude Integrated process and air separation process
US20050256335A1 (en) * 2004-05-12 2005-11-17 Ovidiu Marin Providing gases to aromatic carboxylic acid manufacturing processes
KR101201624B1 (ko) 2004-12-08 2012-11-14 엘피피 컴버션, 엘엘씨 액체 탄화수소 연료의 컨디셔닝을 위한 방법 및 장치
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Also Published As

Publication number Publication date
EP1269094B1 (de) 2006-05-24
US20030136147A1 (en) 2003-07-24
DE60119916D1 (de) 2006-06-29
FR2806755A1 (fr) 2001-09-28
JP4704655B2 (ja) 2011-06-15
WO2001071172A3 (fr) 2002-04-18
FR2806755B1 (fr) 2002-09-27
JP2003532824A (ja) 2003-11-05
DE60119916T2 (de) 2007-01-18
WO2001071172A2 (fr) 2001-09-27
US6718794B2 (en) 2004-04-13

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