AU554293B2 - High fuel value coal-water slurry - Google Patents

High fuel value coal-water slurry

Info

Publication number
AU554293B2
AU554293B2 AU75439/81A AU7543981A AU554293B2 AU 554293 B2 AU554293 B2 AU 554293B2 AU 75439/81 A AU75439/81 A AU 75439/81A AU 7543981 A AU7543981 A AU 7543981A AU 554293 B2 AU554293 B2 AU 554293B2
Authority
AU
Australia
Prior art keywords
slurry
coal
fluid
mmd
fuel
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
AU75439/81A
Other versions
AU7543981A (en
Inventor
Robert Stephen Scheffee
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.)
Atlantic Research Corp
Original Assignee
Atlantic Research Corp
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 Atlantic Research Corp filed Critical Atlantic Research Corp
Publication of AU7543981A publication Critical patent/AU7543981A/en
Application granted granted Critical
Publication of AU554293B2 publication Critical patent/AU554293B2/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, 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

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)
  • Liquid Carbonaceous Fuels (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Colloid Chemistry (AREA)

Abstract

A process for making fluid, stable slurries of finely divided coal in water, which can be sufficiently highly loaded to serve as fuel, comprises: a) Admixing: (i) ultrafine coal particles having a maximum size of 10 mu m MMD in an amount comprising from 10 to 30% by weight of the slurry, (ii) larger coal particles within the size range of from 20 to 200 mu m MMD in an amount sufficient to provide a desired total coal concentration in the slurry, (iii) water, and, (iv) a minor amount of dispersant consisting essentially of an alkaline earth metal salt of an organosulfonate in which the organic moiety is multifunctional, and b) subjecting the mixture to high shear at a rate of at least 100 sec<-><1>. Preferably, calcium lignosulphonate is used as the dispersant and the pH is maintained in the range of 5 to 8 using an inorganic alkali metal buffer salt. The slurry thus produced exhibits thixotropic or Bingham fluid-like properties enabling prolonged periods of storage with subsequent restoration of fluid characteristics to enable use as a fuel.
AU75439/81A 1980-10-17 1981-09-17 High fuel value coal-water slurry Ceased AU554293B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19785380A 1980-10-17 1980-10-17
US197853 1980-10-17

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU11831/83A Addition AU556291B2 (en) 1982-03-22 1983-02-24 Making fuel slurries in water

Publications (2)

Publication Number Publication Date
AU7543981A AU7543981A (en) 1982-04-22
AU554293B2 true AU554293B2 (en) 1986-08-14

Family

ID=22731003

Family Applications (1)

Application Number Title Priority Date Filing Date
AU75439/81A Ceased AU554293B2 (en) 1980-10-17 1981-09-17 High fuel value coal-water slurry

Country Status (8)

Country Link
EP (1) EP0050412B1 (en)
JP (1) JPS5796090A (en)
AT (1) ATE11927T1 (en)
AU (1) AU554293B2 (en)
CA (1) CA1178441A (en)
DE (1) DE3169061D1 (en)
IL (1) IL63866A (en)
ZA (1) ZA816150B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441889A (en) * 1981-01-29 1984-04-10 Gulf & Western Industries, Inc. Coal-aqueous mixtures
US4551179A (en) * 1981-01-29 1985-11-05 The Standard Oil Company Coal-aqueous mixtures
IT1211049B (en) * 1981-05-21 1989-09-29 Snam Progetti COAL WATER SUSPENSION.
GR76426B (en) * 1981-05-21 1984-08-10 Snam Progetti
JPS5896690A (en) * 1981-12-03 1983-06-08 Electric Power Dev Co Ltd Preparation of concentrated coal slurry
NZ202639A (en) * 1982-03-22 1986-03-14 Atlantic Res Corp Stable coal-water slurries and a method for their preparation
US4498906A (en) * 1982-03-22 1985-02-12 Atlantic Research Corporation Coal-water fuel slurries and process for making
US4504277A (en) * 1982-04-16 1985-03-12 Atlantic Research Corporation Coal-water fuel slurries and process for making same
SE8202879L (en) * 1982-05-07 1983-11-08 Carbogel Ab WATER SLUSHING OF A SOLID FUEL AND KITCHEN AND MEANS OF PREPARING THEREOF
DE3374322D1 (en) * 1982-05-19 1987-12-10 British Petroleum Co Plc Mineral slurries
GB2121819B (en) * 1982-06-14 1985-03-27 Smidth & Co As F L Method of manufacturing a pumpable coal/liquid mixture
US4511365A (en) * 1982-09-10 1985-04-16 Sohio Alternate Energy Development Company Coal-aqueous mixtures
US4722740A (en) * 1982-09-30 1988-02-02 Oxce Fuel Company Dispersions of coal in water useful as a fuel
FR2538407A1 (en) * 1982-12-27 1984-06-29 Raffinage Cie Francaise LIQUID FUEL BASED ON PULVERIZED SOLID FUEL, PETROLEUM RESIDUES AND WATER, ITS PREPARATION PROCESS AND APPLICATION IN BOILERS OR INDUSTRIAL FURNACES
CA1255905A (en) * 1983-07-05 1989-06-20 Hirofumi Kikkawa Process for producing a high concentration coal-water slurry
GB8319033D0 (en) * 1983-07-14 1983-08-17 Carbogel Ab Sulphur capture
JPS6058491A (en) * 1983-09-09 1985-04-04 Electric Power Dev Co Ltd Stabilizing treatment of aqueous slully of carbon- containing composition
JPS6071693A (en) * 1983-09-29 1985-04-23 Babcock Hitachi Kk Production of coal-water mixture
JPS6136398A (en) * 1984-07-30 1986-02-21 Babcock Hitachi Kk Production of highly concentrated coal-water slurry
US4810259A (en) * 1985-09-19 1989-03-07 Oxce Fuel Company Method to minimize viscosity and improve stability of coal-water fuels
DE3707941A1 (en) * 1987-03-12 1988-09-22 Henkel Kgaa DISPERSING AGENTS AND THEIR USE IN AQUEOUS CARBON SUSPENSIONS
JPH02232296A (en) * 1989-03-06 1990-09-14 Central Res Inst Of Electric Power Ind Preparation of coal-water slurry
JP2595465B2 (en) * 1994-04-13 1997-04-02 英司 池田 Water / coal blended fuel
US20130074396A1 (en) 2008-06-30 2013-03-28 Gustavo A. Núñez Nano-dispersions of carbonaceous material in water as the basis of fuel related technologies and methods of making same
WO2010039315A2 (en) * 2008-06-30 2010-04-08 Nano Dispersions Technology, Inc. Nano-dispersions of coal in water as the basis of fuel related tecfinologies and methods of making same
SG10201602735VA (en) * 2011-04-07 2016-05-30 Nano Dispersions Technology Inc Nano-dispersions of carbonaceous material in water as the basis of fuel related technologies and methods of making same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522575A (en) * 1976-06-24 1978-08-23 Texaco Development Corp Production of solid fuel-water slurries
US4261701A (en) * 1980-01-09 1981-04-14 Gulf Research & Development Company Uniform coal suspensions and process for preparing same

Also Published As

Publication number Publication date
DE3169061D1 (en) 1985-03-28
CA1178441A (en) 1984-11-27
ZA816150B (en) 1982-09-29
EP0050412A2 (en) 1982-04-28
IL63866A0 (en) 1981-12-31
JPS5796090A (en) 1982-06-15
ATE11927T1 (en) 1985-03-15
IL63866A (en) 1984-07-31
EP0050412B1 (en) 1985-02-20
EP0050412A3 (en) 1982-08-04
AU7543981A (en) 1982-04-22

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