WO2008002452A3 - Oxygen-enhanced combustion of unburned carbon in ash - Google Patents

Oxygen-enhanced combustion of unburned carbon in ash Download PDF

Info

Publication number
WO2008002452A3
WO2008002452A3 PCT/US2007/014493 US2007014493W WO2008002452A3 WO 2008002452 A3 WO2008002452 A3 WO 2008002452A3 US 2007014493 W US2007014493 W US 2007014493W WO 2008002452 A3 WO2008002452 A3 WO 2008002452A3
Authority
WO
WIPO (PCT)
Prior art keywords
ash
oxygen
unburned carbon
enhanced combustion
combustion
Prior art date
Application number
PCT/US2007/014493
Other languages
French (fr)
Other versions
WO2008002452A8 (en
WO2008002452A2 (en
Inventor
Lawrence E Bool
Stephen A Johnson
Minish Mahendra Shah
Original Assignee
Praxair Technology Inc
Lawrence E Bool
Stephen A Johnson
Minish Mahendra Shah
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 Praxair Technology Inc, Lawrence E Bool, Stephen A Johnson, Minish Mahendra Shah filed Critical Praxair Technology Inc
Priority to CN200780024287XA priority Critical patent/CN101479530B/en
Priority to EP07796334A priority patent/EP2038580A2/en
Publication of WO2008002452A2 publication Critical patent/WO2008002452A2/en
Publication of WO2008002452A3 publication Critical patent/WO2008002452A3/en
Publication of WO2008002452A8 publication Critical patent/WO2008002452A8/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B5/00—Combustion apparatus with arrangements for burning uncombusted material from primary combustion
    • F23B5/02—Combustion apparatus with arrangements for burning uncombusted material from primary combustion in main combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B70/00—Combustion apparatus characterised by means returning solid combustion residues to the combustion chamber
    • 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
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • 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
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00006—Liquid fuel burners using pure oxygen or O2-enriched air as oxidant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/30—Solid combustion residues, e.g. bottom or flyash
    • 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
    • F23L2900/07005—Injecting pure oxygen or oxygen enriched air
    • 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
    • F23L2900/07007—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber using specific ranges of oxygen percentage
    • 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

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)
  • Environmental & Geological Engineering (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Incineration Of Waste (AREA)

Abstract

The unburned carbon content of ash is reduced by entraining a stream of the ash (3) into a stream of oxidant (5) and combusting the unburned carbon with oxygen in the oxidant.
PCT/US2007/014493 2006-06-27 2007-06-21 Oxygen-enhanced combustion of unburned carbon in ash WO2008002452A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200780024287XA CN101479530B (en) 2006-06-27 2007-06-21 Oxygen-enhanced combustion of unburned carbon in ash
EP07796334A EP2038580A2 (en) 2006-06-27 2007-06-21 Oxygen-enhanced combustion of unburned carbon in ash

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/475,027 US20070295250A1 (en) 2006-06-27 2006-06-27 Oxygen-enhanced combustion of unburned carbon in ash
US11/475,027 2006-06-27

Publications (3)

Publication Number Publication Date
WO2008002452A2 WO2008002452A2 (en) 2008-01-03
WO2008002452A3 true WO2008002452A3 (en) 2008-04-24
WO2008002452A8 WO2008002452A8 (en) 2009-01-15

Family

ID=38846191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/014493 WO2008002452A2 (en) 2006-06-27 2007-06-21 Oxygen-enhanced combustion of unburned carbon in ash

Country Status (5)

Country Link
US (1) US20070295250A1 (en)
EP (1) EP2038580A2 (en)
KR (1) KR20090037864A (en)
CN (1) CN101479530B (en)
WO (1) WO2008002452A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532338C2 (en) * 2008-04-22 2009-12-15 Aga Ab Method and apparatus for combustion of solid phase fuel
KR101092403B1 (en) * 2011-02-08 2011-12-12 강승현 Reducing system of unburned carbon and soot in ash
FI124206B (en) * 2012-09-13 2014-05-15 Valmet Power Oy Process for the treatment of ash and plant for the treatment of ash

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890562A (en) * 1988-05-26 1990-01-02 American Combustion, Inc. Method and apparatus for treating solid particles
US5390611A (en) * 1993-02-24 1995-02-21 John; Richard E. Thermal processing of fly ash
EP0770823A2 (en) * 1995-10-26 1997-05-02 Linde Aktiengesellschaft Method and apparatus for integrated filter dust disposal in thermal treatment plants
US6136089A (en) * 1998-08-31 2000-10-24 Brown University Research Foundation Apparatus and method for deactivating carbon in fly ash
US6202573B1 (en) * 1995-03-20 2001-03-20 U.S. Scientific, L.L.C. Apparatus and process for carbon removal from fly ash

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129010B (en) * 1982-10-21 1987-03-04 Shell Int Research Combustion of coke present on solid particles
US5207164A (en) * 1992-04-15 1993-05-04 Consolidated Natural Gas Service Company, Inc. Process to limit the production of flyash by dry bottom boilers
US5266024A (en) * 1992-09-28 1993-11-30 Praxair Technology, Inc. Thermal nozzle combustion method
GB2318786B (en) * 1996-10-30 1999-09-01 Univ Sheffield Fly ash treatment
US5992336A (en) * 1996-12-31 1999-11-30 Wisconsin Electric Power Company Reburning of coal ash
WO2001033140A1 (en) * 1999-11-02 2001-05-10 Consolidated Engineering Company, Inc. Method and apparatus for combustion of residual carbon in fly ash
US6382958B1 (en) * 2000-07-12 2002-05-07 Praxair Technology, Inc. Air separation method and system for producing oxygen to support combustion in a heat consuming device
CA2485570C (en) * 2002-05-15 2009-12-22 Praxair Technology, Inc. Combustion with reduced carbon in the ash

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890562A (en) * 1988-05-26 1990-01-02 American Combustion, Inc. Method and apparatus for treating solid particles
US5390611A (en) * 1993-02-24 1995-02-21 John; Richard E. Thermal processing of fly ash
US6202573B1 (en) * 1995-03-20 2001-03-20 U.S. Scientific, L.L.C. Apparatus and process for carbon removal from fly ash
EP0770823A2 (en) * 1995-10-26 1997-05-02 Linde Aktiengesellschaft Method and apparatus for integrated filter dust disposal in thermal treatment plants
US6136089A (en) * 1998-08-31 2000-10-24 Brown University Research Foundation Apparatus and method for deactivating carbon in fly ash

Also Published As

Publication number Publication date
CN101479530A (en) 2009-07-08
CN101479530B (en) 2012-02-15
KR20090037864A (en) 2009-04-16
US20070295250A1 (en) 2007-12-27
EP2038580A2 (en) 2009-03-25
WO2008002452A8 (en) 2009-01-15
WO2008002452A2 (en) 2008-01-03

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