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WO2004055139B1 - Fuel from ash - Google Patents

Fuel from ash

Info

Publication number
WO2004055139B1
WO2004055139B1 PCT/CA2003/001932 CA0301932W WO2004055139B1 WO 2004055139 B1 WO2004055139 B1 WO 2004055139B1 CA 0301932 W CA0301932 W CA 0301932W WO 2004055139 B1 WO2004055139 B1 WO 2004055139B1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
initial carbon
coal ash
weight
size fractions
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/CA2003/001932
Other languages
French (fr)
Other versions
WO2004055139A1 (en
Inventor
Oates David Bridson
Sloten Alan Van
Jeffrey Fair
Trent Renfro
Craig Plunk
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.)
Lafarge Canada Inc
Original Assignee
Lafarge Canada Inc
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 Lafarge Canada Inc filed Critical Lafarge Canada Inc
Priority to AU2003291895A priority Critical patent/AU2003291895A1/en
Priority to CA002509352A priority patent/CA2509352A1/en
Priority to EP03767353A priority patent/EP1572843A2/en
Publication of WO2004055139A1 publication Critical patent/WO2004055139A1/en
Publication of WO2004055139B1 publication Critical patent/WO2004055139B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/361—Briquettes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/60—Separating
    • F23G2201/602—Separating different sizes
    • 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
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Coal ash, which also consists of fly ash, is a very fine granular solid residue obtained as a by-product of coal combustion. The invention relates to the surprising result that a fuel can be obtained from coal ash. The process involves a pneumatic separation of the coal ash at relatively low temperatures. The coal ash is separated into at least two size fractions. The size fractions obtained by the process of this invention include at least one with lower carbon and another containing increased levels of carbon in the range of 50% by weight and a heating value in the range of 4000 to 6000 Btu/lb.

Claims

AMENDED CLAIMS received by the International Bureau on 19 July 2004 (19.07.2004) claims 1, 13 to 16 and 25 have been amended
1. A process for producing a fuel from a coal ash having an initial carbon amount, comprising;
a pneumatic separation of the coal ash into at least two size fractions;
the separation taking place in a solid-gas contactor in association with a pneumatic classifier means, wherein
the at least two size fractions are' elutriated, the size fractions comprise when separated,
a major fine fraction, and
a minor coarse fraction, being the fuel, and containing at least 45% of the initial carbon fuel amount, and
a recovery of the fuel.
2. The process according to claim 1, wherein the initial carbon amount is at least 5% by weight.
3. The process according to claim 1, wherein the initial carbon amount is at least 10% by weight.
4. The process according to claim 1, wherein the initial carbon amount is at least 14% by weight.'
5. The process according to any one of claims 1 to 4, wherein the .fine fraction has a particle size distribution of less than 45 μm and the coarse fraction has a particle size distribution of greater than or equal to 45 μm. - 15 -
the separation taking place in a solid-gas contactor in association with a pneumatic classifier means,
the at least two size fractions are elutriated, the size fractions comprise when separated,
a major fine fraction, and
a minor coarse fraction, being the fuel, and .containing at least 45% of the initial carbon fuel amount, and
a recovery of the fuel.
14. The fuel according to claim 13, wherein the initial carbon amount is at least 5% by weight.
15. The fuel according to claim 13, wherein the initial carbon amount is at least 10% by weight.
16. The fuel according to claim 13, wherein the initial carbon amount is at least 14% by weight.
17. A fuel according to any one of claims 13 to 16, wherein the fine fraction has a particle size distribution of less than 45 μm and the coarse fraction has a particle size distribution of greater than or equal' to 45 μm.
18. The fuel according to any one of claims 13 to 16, wherein the coarse fraction has a particle size distribution of greater than or equal to 63 μm.
19. The fuel according to any one of claims 13 to 18, wherein the fuel has a heating value between 4000 and 6000 Btu/lb. - 16 -
20. The fuel according to any one of claims 13 to 19, wherein the circulating solid-gas contactor is selected from the group consisting of a fluidized bed, a circulating fluidized bed, a transport vessel and a classifying transport vessel.
21. The fuel according to claim 20, wherein the classifying transport vessel is a Torbed™ toroidal vessel.
22. The fuel according to any one of claims 13 - to 21, wherein the separation is conducted at ambient temperature or up to a temperature of 200 °C.
'23. The' fuel according to any one of claims 13 to 20, wherein the classifying means is a cyclone or a bank of cyclones .
24. The fuel according to claim 23, wherein the classifying means may be placed in series to obtain a number of different size fractions.
25. A method of burning a fuel derived from a coal ash having an initial carbon amount and produced by,
a pneumatic separation of the coal ash wherein the coal ash is separated into at least two fractions,
the separation taking place in a solid-gas contactor in association with a pneumatic classifier means, wherein
the at least two size fractions are elutriated, the size fractions comprise when separated,
a major fine, fraction, .and
PCT/CA2003/001932 2002-12-16 2003-12-15 Fuel from ash Ceased WO2004055139A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003291895A AU2003291895A1 (en) 2002-12-16 2003-12-15 Fuel from ash
CA002509352A CA2509352A1 (en) 2002-12-16 2003-12-15 Fuel from ash
EP03767353A EP1572843A2 (en) 2002-12-16 2003-12-15 Fuel from ash

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/320,069 2002-12-16
US10/320,069 US20040111958A1 (en) 2002-12-16 2002-12-16 Fuel from ash

Publications (2)

Publication Number Publication Date
WO2004055139A1 WO2004055139A1 (en) 2004-07-01
WO2004055139B1 true WO2004055139B1 (en) 2004-09-02

Family

ID=32506788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2003/001932 Ceased WO2004055139A1 (en) 2002-12-16 2003-12-15 Fuel from ash

Country Status (5)

Country Link
US (1) US20040111958A1 (en)
EP (1) EP1572843A2 (en)
AU (1) AU2003291895A1 (en)
CA (1) CA2509352A1 (en)
WO (1) WO2004055139A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101171799B1 (en) * 2010-06-29 2012-08-13 고려대학교 산학협력단 Method for recycling of silica etching waste and method for preparing mesoporous materials
DE102013112210A1 (en) * 2013-11-06 2015-05-07 Thyssenkrupp Ag Process for the purification of bypass gases of the cement or mineral industry as well as the cement or mineral industry
CA2970520A1 (en) * 2014-11-07 2016-05-12 Fatec Oy Method and apparatus for handling of granular material and use of the method and apparatus for classifying fly ash
CN108339331B (en) * 2018-01-25 2021-11-16 新沂慧科智能科技有限公司 Landfill gas classification detects recycle device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769053A (en) * 1967-12-04 1973-10-30 Enercon Int Ltd Process for the treatment of fly ash
DE2941301A1 (en) * 1979-10-11 1981-04-23 Metallgesellschaft Ag, 6000 Frankfurt METHOD FOR PRODUCING CARBON BRIQUETTES FOR GASIFYING OR SMOKING
AU532788B2 (en) * 1980-12-11 1983-10-13 Texaco Development Corp. Recovery of unconverted solid fuel from ash
JPS58109127A (en) * 1981-12-22 1983-06-29 Kawasaki Heavy Ind Ltd Treatment for ash
US5024169A (en) * 1990-02-13 1991-06-18 Borowy William J Process to refine flyash captured from pulverized coal fired boilers and auxiliary equipment
US5160539A (en) * 1991-04-05 1992-11-03 Progress Materials Inc. Method and product of fly ash benefication by carbon burnout in a dry bubbling fluid bed
US5555821A (en) * 1994-12-02 1996-09-17 Martinez; Morris P. Apparatus and process for removing unburned carbon in fly ash
US5996808A (en) * 1996-03-05 1999-12-07 Levy; Edward Kenneth Fly ash processing using inclined fluidized bed and sound wave agitation
DE60032629T2 (en) * 1999-11-02 2007-10-11 Consolidated Engineering Co. Inc. METHOD AND DEVICE FOR BURNING RESIDUAL CARBON MATERIALS INTO A FLIP POCKET

Also Published As

Publication number Publication date
US20040111958A1 (en) 2004-06-17
EP1572843A2 (en) 2005-09-14
WO2004055139A1 (en) 2004-07-01
CA2509352A1 (en) 2004-07-01
AU2003291895A1 (en) 2004-07-09

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