EP0124488A1 - Procédé de préparation de mélanges charbon-eau - Google Patents

Procédé de préparation de mélanges charbon-eau Download PDF

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Publication number
EP0124488A1
EP0124488A1 EP84830057A EP84830057A EP0124488A1 EP 0124488 A1 EP0124488 A1 EP 0124488A1 EP 84830057 A EP84830057 A EP 84830057A EP 84830057 A EP84830057 A EP 84830057A EP 0124488 A1 EP0124488 A1 EP 0124488A1
Authority
EP
European Patent Office
Prior art keywords
coal
fact
per
water
finer
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
EP84830057A
Other languages
German (de)
English (en)
Other versions
EP0124488B1 (fr
Inventor
Luigi Palumbo
Giansilvio Malgarini
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.)
Centro Sviluppo Materiali SpA
Original Assignee
Centro Sviluppo Materiali SpA
Centro Sperimentale Metallurgico SpA
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 Centro Sviluppo Materiali SpA, Centro Sperimentale Metallurgico SpA filed Critical Centro Sviluppo Materiali SpA
Priority to AT84830057T priority Critical patent/ATE49016T1/de
Publication of EP0124488A1 publication Critical patent/EP0124488A1/fr
Application granted granted Critical
Publication of EP0124488B1 publication Critical patent/EP0124488B1/fr
Expired legal-status Critical Current

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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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/326—Coal-water suspensions

Definitions

  • the present invention relates to a process for the preparation of stable coal-water mixtures. More precisely it relates to the produc tion of coal-water mixtures with a high coal content, suitable for use as a substitute for fuel oil or metallurgical coke (e.g. in blast furnaces).
  • coal is coming to play an ever more important role for use as auxiliary fuel injected into the blast furnace via the tuyeres.
  • This invention proposes to eliminate these difficulties by providing a simple, cheap process for preparing coal-water mixture with a coal content of 70 to 80% which is easy to pump and is stable timewise.
  • coal preferably finer than 3 mm in size
  • the quantity of water desir ed in the final mixture is fed into a mill together with the quantity of water desir ed in the final mixture.
  • 70-80% (by weight) of coal is added to 20-30% of water.
  • known fluidizing agents such as humic acid based compounds or their derivates or lignin sulphonates are added.
  • the first stage of grinding must provide a mixture in which the harmonic mean diameter of the coal particles is around 60 ⁇ m, at least 50% of the coal being finer than 74 ⁇ m, and less than 20% coarser than 250 ⁇ m.
  • the minus 3 mm coal was wet ground in a disc mill, as described above, feeding to the first mill the coal, water and additive in the quantities desired for the final suspension.
  • a mixture of activated salts of humic acid and phosphates was added at a fixed rate of 0, 5%.
  • the mixtures thus prepared are suitable for substituting fuel oil and similar petroleum derivatives in applications such as, for instance, fuel in thermal-electric power stations or as auxiliary fuel for injection into blast furnaces via the tuyeres.
  • the mixtures appear to be very interesting for the latter application, not only from the economic point of view but also because they permit particularly uniform, efficient blast-furnace operation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Manufacture Of Iron (AREA)
  • Liquid Carbonaceous Fuels (AREA)
EP84830057A 1983-04-29 1984-03-06 Procédé de préparation de mélanges charbon-eau Expired EP0124488B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84830057T ATE49016T1 (de) 1983-04-29 1984-03-06 Verfahren zur herstellung von stabilen kohlewasser-gemischen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT48185/83A IT1197637B (it) 1983-04-29 1983-04-29 Procedimento per la preparazione di miscele stabili carbone-acqua
IT4818583 1983-04-29

Publications (2)

Publication Number Publication Date
EP0124488A1 true EP0124488A1 (fr) 1984-11-07
EP0124488B1 EP0124488B1 (fr) 1989-12-27

Family

ID=11265084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84830057A Expired EP0124488B1 (fr) 1983-04-29 1984-03-06 Procédé de préparation de mélanges charbon-eau

Country Status (10)

Country Link
EP (1) EP0124488B1 (fr)
AR (1) AR230842A1 (fr)
AT (1) ATE49016T1 (fr)
AU (1) AU568637B2 (fr)
BR (1) BR8401913A (fr)
CA (1) CA1274686A (fr)
DE (1) DE3480850D1 (fr)
IN (1) IN162513B (fr)
IT (1) IT1197637B (fr)
ZA (1) ZA842004B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519730A1 (fr) * 1991-06-20 1992-12-23 Coal Products Limited Procédé de formation d'une masse réfractaire
US5482517A (en) * 1994-04-13 1996-01-09 Ikeda; Hideji Coal-water mixture and process for producing same
WO1997005216A1 (fr) * 1995-08-01 1997-02-13 Isentropic Systems Ltd. Ameliorations dans l'utilisation des combustibles houilleux
US5686028A (en) * 1991-07-03 1997-11-11 Glaverbel Process for forming a coherent refractory mass on a surface
AU714670B2 (en) * 1995-08-01 2000-01-06 Dut Pty Ltd Improvements in the use of carbonaceous fuels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398155C (de) * 1913-08-01 1924-07-02 Hermann Plauson Verfahren zur Erzeugung eines fluessigen Heizstoffes durch Vermahlen von Kohle oder kohlehaltigen Stoffen im Gemisch mit einer Fluessigkeit
EP0092353A1 (fr) * 1982-04-16 1983-10-26 Atlantic Research Corporation Boues charbon/eau combustibles et leur procédé de préparation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416666A (en) * 1979-10-26 1983-11-22 Alfred University Research Foundation Inc. Coal-water slurry and method for its preparation
JPS5620090A (en) * 1979-07-26 1981-02-25 Kao Corp Dispersant for slurry of coal powder in water
JPS5896690A (ja) * 1981-12-03 1983-06-08 Electric Power Dev Co Ltd 石炭の高濃度スラリ−の製造方法
JPS58117283A (ja) * 1981-12-29 1983-07-12 Electric Power Dev Co Ltd 石炭スラリ−組成物
US4477259A (en) * 1982-05-05 1984-10-16 Alfred University Research Foundation, Inc. Grinding mixture and process for preparing a slurry therefrom
US4592759A (en) * 1983-02-25 1986-06-03 Dai-Ichi Kogyo Seiyaku Co., Ltd. Production of aqueous coal slurries having high coal contents

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398155C (de) * 1913-08-01 1924-07-02 Hermann Plauson Verfahren zur Erzeugung eines fluessigen Heizstoffes durch Vermahlen von Kohle oder kohlehaltigen Stoffen im Gemisch mit einer Fluessigkeit
EP0092353A1 (fr) * 1982-04-16 1983-10-26 Atlantic Research Corporation Boues charbon/eau combustibles et leur procédé de préparation

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519730A1 (fr) * 1991-06-20 1992-12-23 Coal Products Limited Procédé de formation d'une masse réfractaire
TR27168A (tr) * 1991-06-20 1994-11-10 Coal Industry Patents Ltd Seramik kaynagi veya bununla ilgili gelistirmeler.
CN1045079C (zh) * 1991-06-20 1999-09-15 煤炭工业(专利)有限公司 一种陶瓷的熔接方法
US5686028A (en) * 1991-07-03 1997-11-11 Glaverbel Process for forming a coherent refractory mass on a surface
US5866049A (en) * 1991-07-03 1999-02-02 Glaverbel Process and mixture for forming a coherent Refractory mass on a surface
US5482517A (en) * 1994-04-13 1996-01-09 Ikeda; Hideji Coal-water mixture and process for producing same
WO1997005216A1 (fr) * 1995-08-01 1997-02-13 Isentropic Systems Ltd. Ameliorations dans l'utilisation des combustibles houilleux
AU714670B2 (en) * 1995-08-01 2000-01-06 Dut Pty Ltd Improvements in the use of carbonaceous fuels

Also Published As

Publication number Publication date
BR8401913A (pt) 1984-12-04
ZA842004B (en) 1984-12-24
AU2611284A (en) 1984-11-01
DE3480850D1 (de) 1990-02-01
ATE49016T1 (de) 1990-01-15
IN162513B (fr) 1988-06-04
AU568637B2 (en) 1988-01-07
CA1274686A (fr) 1990-10-02
IT1197637B (it) 1988-12-06
AR230842A1 (es) 1984-07-31
EP0124488B1 (fr) 1989-12-27
IT8348185A0 (it) 1983-04-29

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