Process for preparing a stabilized coal-water slurry

Details Process for preparing a stabilized coal-water slurry Process for preparing a stabilized coal-water slurry

1984-04-06

1987-06-23

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

241 18, 241 19, C10L 132

Patent

active

046750240

ABSTRACT:
A process for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases.

REFERENCES:
patent: 3854666 (1974-12-01), Switzer, Jr.
patent: 4130401 (1978-12-01), Meyer et al.
patent: 4132365 (1979-01-01), Verschuur
patent: 4217109 (1980-08-01), Siwersson et al.
patent: 4239496 (1980-12-01), Cochran
patent: 4242098 (1980-12-01), Braun
patent: 4261701 (1981-04-01), Schultz et al.
patent: 4394132 (1983-07-01), Taylor

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