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WO2017164990A1 - Procédés de séchage de charbon et leur combustion de gaz oxygéné - Google Patents

Procédés de séchage de charbon et leur combustion de gaz oxygéné Download PDF

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Publication number
WO2017164990A1
WO2017164990A1 PCT/US2017/015982 US2017015982W WO2017164990A1 WO 2017164990 A1 WO2017164990 A1 WO 2017164990A1 US 2017015982 W US2017015982 W US 2017015982W WO 2017164990 A1 WO2017164990 A1 WO 2017164990A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxy
nitrogen
coal
separation unit
air
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.)
Ceased
Application number
PCT/US2017/015982
Other languages
English (en)
Inventor
Stevan Jovanovic
Alexander Alekseev
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of WO2017164990A1 publication Critical patent/WO2017164990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched 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
    • F25J3/04521—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
    • F25J3/04521—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
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/10—Pulverizing
    • F23K2201/1003—Processes to make pulverulent fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/10—Pulverizing
    • F23K2201/103—Pulverizing with hot gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/20—Drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07001—Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • ASU air separation unit
  • EOR enhanced oil recovery
  • drying coai before its combustion with oxygen would be to use a mixture of previously dried carbon dioxide byproduct from the flue gas mixed with fresh dry oxygen. This has a negative impact of increased capital cost and energy penalties.
  • expansion of pressurized, partially dried carbon dioxide which can be heated with a waste heat gas source will also increase capital cost and energy loss due to oxygen compression.
  • the methods of the present invention avoid these shortcomings by reducing specific coal and oxygen utilization as well as by increasing power generation efficiency and reducing the cost of electricity for related operations.
  • a method for integrating an oxy-fuel boiler and an air separation unit comprising the steps: a) Feeding an air stream to an air separation unit thereby producing oxygen and nitrogen; b) Feeding the oxygen to an oxy-fuel boiler; c) Feeding the nitrogen to a supply of wet coal, thereby drying the wet coal; d) Feeding the dry coal to the oxy-fuel boiler; and e) Combusting the coal and oxygen in the oxy-fuel boiler.
  • a method for operating an oxy-fuel boiler comprising the steps of: a) Producing oxygen and nitrogen in an air separation unit; b) Feeding the nitrogen to a supply of wet coal, thereby drying the coal; and c) Feeding the oxygen and the coal to the oxyfuel boiler.
  • the air stream is fed to the air separation unit after it has been cooled and compressed.
  • This cooling and compression can be by one or more separate stages.
  • the nitrogen contacts the air stream prior to the air stream entering the air separation unit.
  • the nitrogen will provide cooling to the air stream.
  • the nitrogen is heated prior to contacting the supply of wet coal by contact with the second compression stage where the air stream is at a warmer temperature than the incoming nitrogen stream.
  • the air separation unit can be any conventional design but is typically a cryogenic distillation unit.
  • a method for drying wet coal comprising the steps: a) Feeding an air stream to an air separation unit thereby producing oxygen and nitrogen; and b) Feeding the nitrogen to a supply of wet coal
  • the air stream is fed to the air separation unit after it has been cooled and compressed.
  • the nitrogen contacts the air stream prior to the air stream entering the air separation unit and will provide cooling of the air stream, particularly as it leaves the one or more compression stages.
  • the nitrogen is heated prior to contacting the supply of wet coal by contact with the second compression stage where the air stream is at a warmer temperature than the incoming nitrogen stream.
  • the figure is a schematic showing the integration of the oxy-fuel boiler with the air separation unit and coal supply.
  • Waste nitrogen from the air separation unit is indirectly heated with compressed air and directed to the coal drying and pulverization unit.
  • Air is fed through line 10 into the main air compressor (MAC) A.
  • the air will pass by way of line 11 through a first stage compressor 1 ; an interstage air cooler 2; a second stage air compressor 3 and an after compression air cooler with waste nitrogen 4.
  • the air will typically be above 100°C after the second stage air compressor 3
  • the air separation unit is a conventional air separation unit B which can be for example, a cryogenic distillation unit which will cryogenically distill air to produce nitrogen and oxygen.
  • the oxygen can be fed through line 12 to the oxy-fuel boiler D.
  • the nitrogen which is typically at close to atmospheric pressure will be fed through line S3 to the after compression air cooler 4 in the main air compressor A to provide cooling to the air stream prior to its entry into the air separation unit B.
  • the dry nitrogen will be heated in the after compression air cooler 4 and fed through line S4 to the coal drying and pulverization unit C.
  • the coal drying and pulverization unit C receives raw coal through feed line S1.
  • the raw coal is contacted with the heated dry nitrogen feed into the coal drying and pulverization unit C.
  • the heated dry nitrogen is typically at around 100°C and will remove moisture from the raw coal. Once the nitrogen passes through the coal, it is directed out of the coal drying and pulverization unit C through line 17.
  • the dry coal is fed through line S2 to the oxy-fuel boiler D where it will be combusted with the oxygen and recycled carbon dioxide fed through line 12 from the air separation unit B.
  • the oxy-fuel boiler D will combust the dry coal using a mixture of carbon dioxide recycle and oxygen. This will produce steam which will be pressurized and fed through line 13 to a steam turbine E which will generate mechanical work which is usually translated into electrical energy. The electrical energy can be employed as part of the site operations.
  • the water from the turbines can be returned via line 14 to the oxy-fuel boiler D where it will be reheated, pressurized and fed to the steam turbine E as stream.
  • the stream 15 exiting the oxy-fuel boiler is a mixture of carbon dioxide and water and can include smaller amounts of oxygen, carbon monoxide, sulfur dioxide and nitrogen. This stream can be treated as necessary for environmental purposes and discharged to the atmosphere. A part of the carbon dioxide produced can be recycled through line 16 to the oxygen feed line 12 from the air separation unit B for entry as a fuel in the oxy-fuel boiler D.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

L'invention concerne un procédé d'intégration d'une chaudière à gaz oxygéné et d'une unité de séparation d'air, ainsi qu'une alimentation en charbon humide. L'intégration comprend les étapes consistant à acheminer un flux d'air dans une unité de séparation d'air, en produisant ainsi de l'oxygène et de l'azote ; à acheminer l'oxygène vers une chaudière à gaz oxygéné ; à acheminer l'azote vers une alimentation en charbon humide, en séchant ainsi le charbon humide ; à acheminer le charbon sec vers la chaudière à gaz oxygéné ; et à brûler le charbon et l'oxygène dans la chaudière à gaz oxygéné.
PCT/US2017/015982 2016-03-21 2017-02-01 Procédés de séchage de charbon et leur combustion de gaz oxygéné Ceased WO2017164990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662311080P 2016-03-21 2016-03-21
US62/311,080 2016-03-21

Publications (1)

Publication Number Publication Date
WO2017164990A1 true WO2017164990A1 (fr) 2017-09-28

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ID=59899668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/015982 Ceased WO2017164990A1 (fr) 2016-03-21 2017-02-01 Procédés de séchage de charbon et leur combustion de gaz oxygéné

Country Status (1)

Country Link
WO (1) WO2017164990A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111271872A (zh) * 2018-12-04 2020-06-12 宁波方太厨具有限公司 低氮燃气两用炉
WO2020160844A1 (fr) 2019-02-07 2020-08-13 Linde Gmbh Procédé et système pour fournir un premier produit obtenu et un second produit obtenu
EP3957913A1 (fr) * 2020-08-12 2022-02-23 Air Products And Chemicals, Inc. Système et procédé de combustion de combustible à forte humidité pour générer de la vapeur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049173A (en) * 1990-03-06 1991-09-17 Air Products And Chemicals, Inc. Production of ultra-high purity oxygen from cryogenic air separation plants
US5137558A (en) * 1991-04-26 1992-08-11 Air Products And Chemicals, Inc. Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream
US5327717A (en) * 1991-02-05 1994-07-12 Deutsch-Voest-Alpine Industrieanlagenbau Gmbh Process for drying coal for melt-down or coal gasifiers
US6925818B1 (en) * 2003-07-07 2005-08-09 Cryogenic Group, Inc. Air cycle pre-cooling system for air separation unit
US20060123844A1 (en) * 2004-12-09 2006-06-15 Patrick Le Bot Integrated process for the separation of air and an integrated installation for the separation of air
US20070119753A1 (en) * 2005-11-29 2007-05-31 Varagani Rajani K Coal upgrading utilizing carbon dioxide
US20140238281A1 (en) * 2011-11-16 2014-08-28 Ihi Corporation Pulverized fuel supply method for oxyfuel combustion boiler, and oxyfuel combustion boiler system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049173A (en) * 1990-03-06 1991-09-17 Air Products And Chemicals, Inc. Production of ultra-high purity oxygen from cryogenic air separation plants
US5327717A (en) * 1991-02-05 1994-07-12 Deutsch-Voest-Alpine Industrieanlagenbau Gmbh Process for drying coal for melt-down or coal gasifiers
US5137558A (en) * 1991-04-26 1992-08-11 Air Products And Chemicals, Inc. Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream
US6925818B1 (en) * 2003-07-07 2005-08-09 Cryogenic Group, Inc. Air cycle pre-cooling system for air separation unit
US20060123844A1 (en) * 2004-12-09 2006-06-15 Patrick Le Bot Integrated process for the separation of air and an integrated installation for the separation of air
US20070119753A1 (en) * 2005-11-29 2007-05-31 Varagani Rajani K Coal upgrading utilizing carbon dioxide
US20140238281A1 (en) * 2011-11-16 2014-08-28 Ihi Corporation Pulverized fuel supply method for oxyfuel combustion boiler, and oxyfuel combustion boiler system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111271872A (zh) * 2018-12-04 2020-06-12 宁波方太厨具有限公司 低氮燃气两用炉
WO2020160844A1 (fr) 2019-02-07 2020-08-13 Linde Gmbh Procédé et système pour fournir un premier produit obtenu et un second produit obtenu
EP3957913A1 (fr) * 2020-08-12 2022-02-23 Air Products And Chemicals, Inc. Système et procédé de combustion de combustible à forte humidité pour générer de la vapeur
US12410914B2 (en) 2020-08-12 2025-09-09 Air Products And Chemicals, Inc. System and method for combusting high-moisture fuel to generate steam

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