NO874831L - Demineralisering av kull. - Google Patents

Demineralisering av kull.

Info

Publication number
NO874831L
NO874831L NO874831A NO874831A NO874831L NO 874831 L NO874831 L NO 874831L NO 874831 A NO874831 A NO 874831A NO 874831 A NO874831 A NO 874831A NO 874831 L NO874831 L NO 874831L
Authority
NO
Norway
Prior art keywords
slurry
alkali
coal
solution
weight
Prior art date
Application number
NO874831A
Other languages
English (en)
Other versions
NO874831D0 (no
Inventor
Allan Bruce Waugh
Keith Mcgregor Bowling
Original Assignee
Commw Scient Ind Res Org
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 Commw Scient Ind Res Org filed Critical Commw Scient Ind Res Org
Publication of NO874831L publication Critical patent/NO874831L/no
Publication of NO874831D0 publication Critical patent/NO874831D0/no

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
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/02—Treating solid fuels to improve their combustion by chemical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

Fremgangsmåte for demlnerallserlng av kull omfattende trinnene: dannelse av en oppsiemming av kullpartlk-ler, hvor fortrinnsvis minst 50 vekt-< av partiklene har en maksimum dimensjon på minst 0,5 mm, med van-dige oppløsninger av et alkali, hvilken oppløsning har et alkaliInnhold på 5-30 vekt-*, slik at oppslemmlngen har et forhold for alkalloppløsnlng til kull, på en vektbasls, på minst 1:1; opprettholdelse av oppslemmlngen ved en temperatur på 150-300°C, fortrinnsvis 170-230°C 1 et tidsrom på 2-20 minutter vesentlig under autogent hydrotermlsk trykk og hurtig avkjøling av oppslemmlngen til en temperatur på min-dre enn 100°C; separering av oppslemmlngen 1 alkall-sert kull og en brukt alkall-utlutlngsoppløsnlng; regenerering av alkali-utlutlngsoppløsnlngen for ny anvendelse 1 trinn (a) ovenfor ved tisetning av kalsium- eller magnesiumoksyd eller -hydroksyd dertil for å utfelle mineraler derfra;urgjøring av det alkaliserte kullet ved behandling med en vandig opp-løsning av svovelsyre eller svovelsyrling til dannelse av en oppslemming som har en pH-verdl på 0,5-1,5 og en konduktivitet på 10.000-100.000 jiS; separering av oppslemmlngen 1 surgjort kull og en brukt syreutlutingsoppløsning; og vasking av det surgjorte kullet.
NO874831A 1986-03-21 1987-11-19 Demineralisering av kull. NO874831D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH514686 1986-03-21
PCT/AU1987/000080 WO1987005621A1 (en) 1986-03-21 1987-03-23 Demineralization of coal

Publications (2)

Publication Number Publication Date
NO874831L true NO874831L (no) 1987-11-19
NO874831D0 NO874831D0 (no) 1987-11-19

Family

ID=3771527

Family Applications (1)

Application Number Title Priority Date Filing Date
NO874831A NO874831D0 (no) 1986-03-21 1987-11-19 Demineralisering av kull.

Country Status (13)

Country Link
US (1) US4936045A (no)
EP (1) EP0302864B1 (no)
JP (1) JPH0768531B2 (no)
KR (1) KR950009005B1 (no)
AT (1) ATE66015T1 (no)
AU (1) AU592640B2 (no)
CA (1) CA1295273C (no)
DE (1) DE3772053D1 (no)
DK (1) DK612887A (no)
FI (1) FI884170A7 (no)
NO (1) NO874831D0 (no)
NZ (1) NZ219741A (no)
WO (1) WO1987005621A1 (no)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192338A (en) * 1987-09-03 1993-03-09 Commonwealth Scientific And Industrial Research Organisation Coal ash modification and reduction
US5312462A (en) * 1991-08-22 1994-05-17 The United States Of America As Represented By The United States Department Of Energy Moist caustic leaching of coal
CA2503836C (en) * 2002-10-29 2012-03-13 Ucc Energy Pty Limited Process for demineralising coal
RU2249053C1 (ru) * 2003-10-08 2005-03-27 Амурский научный центр Дальневосточного отделения Российской академии наук Способ извлечения золота из золотосодержащего сырья
US7998724B2 (en) * 2007-04-27 2011-08-16 Ut-Battelle Llc Removal of mercury from coal via a microbial pretreatment process
KR101504511B1 (ko) * 2012-08-03 2015-03-20 코카스엔텍 주식회사 입도선별을 통한 플라이애시로부터의 고품위 유용광물 회수 방법
CN107603684A (zh) * 2017-11-02 2018-01-19 兖矿集团有限公司 一种煤中矿物质的深度脱除系统及方法
PL240458B1 (pl) * 2018-04-17 2022-04-04 Syntoil Spolka Akcyjna Sposób oczyszczania karbonizatu
CN116536089B (zh) * 2022-01-26 2025-11-21 国家能源投资集团有限责任公司 煤炭除灰碱液的碱再生方法及煤炭除灰的方法
CN115232658B (zh) * 2022-07-15 2023-10-03 广东一纳科技有限公司 超纯无烟煤及其制备方法
CN115926867B (zh) * 2022-12-16 2026-02-13 中国矿业大学 一种高钠煤精准高效脱钠的方法
CN118791150B (zh) * 2023-04-12 2026-05-12 国家能源投资集团有限责任公司 一种煤炭除灰碱液的除杂再生方法和煤炭除灰方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993455A (en) * 1973-06-25 1976-11-23 The United States Of America As Represented By The Secretary Of The Interior Removal of mineral matter including pyrite from coal
US4134737A (en) * 1974-09-30 1979-01-16 Aluminum Company Of America Process for producing high-purity coal
GB1508712A (en) * 1975-03-31 1978-04-26 Battelle Memorial Institute Treating solid fuel
DE2620664A1 (de) * 1975-05-12 1976-12-02 Battelle Memorial Institute Karbonatbehandlung von kohle
US4095955A (en) * 1976-05-05 1978-06-20 Battelle Development Corporation Fuel separation process
US4516980A (en) * 1983-06-20 1985-05-14 Iowa State University Research Foundation, Inc. Process for producing low-ash, low-sulfur coal
US4569678A (en) * 1984-05-25 1986-02-11 Simpson Charles H Method for removing pyritic, organic and elemental sulfur from coal
US4582512A (en) * 1984-06-20 1986-04-15 Amax Inc. Chemical leaching of coal to remove ash, alkali and vanadium

Also Published As

Publication number Publication date
EP0302864B1 (en) 1991-08-07
JPH0768531B2 (ja) 1995-07-26
US4936045A (en) 1990-06-26
JPS63503311A (ja) 1988-12-02
AU592640B2 (en) 1990-01-18
NZ219741A (en) 1990-07-26
EP0302864A1 (en) 1989-02-15
FI884170A0 (fi) 1988-09-09
EP0302864A4 (en) 1989-03-09
AU7231187A (en) 1987-10-09
KR950009005B1 (ko) 1995-08-10
ATE66015T1 (de) 1991-08-15
NO874831D0 (no) 1987-11-19
CA1295273C (en) 1992-02-04
FI884170A7 (fi) 1988-09-09
WO1987005621A1 (en) 1987-09-24
DK612887D0 (da) 1987-11-20
DK612887A (da) 1987-11-20
DE3772053D1 (de) 1991-09-12
KR880701277A (ko) 1988-07-26

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