Coal-water dispersion

Details Coal-water dispersion Coal-water dispersion

1985-02-22

1986-07-08

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 66, 260403, C10L 132

Patent

active

045990891

ABSTRACT:
A storage stable aqueous pulverized-coal dispersion can be pumped and can be burned by conventional techniques. The dispersion comprises stabilizing additives and a coal content which ranges from 60 to 80% by weight. The additives include a combination of (a) sufficient lecithin adsorbed on surfaces of coal particles to provide repulsion between the coal particles by hydration forces and (b) polymer cooperating with the lecithin and comprising at least one polymer having segments of hydrophobic as well as segments of hydrophilic character.

REFERENCES:
patent: 3069361 (1962-12-01), Cogswell
patent: 3547605 (1970-12-01), Cornelius, III et al.
patent: 4200551 (1980-04-01), Orthoefer
patent: 4242098 (1980-12-01), Braun et al.
patent: 4282006 (1981-08-01), Funk
patent: 4358293 (1982-11-01), Mark
patent: 4492590 (1985-01-01), Schick et al.
Kirk-Othmer Encyclopedia of Chemical Technology, 2nd ed., vol. 12, John Wiley & Sons, Inc., 1967, pp. 344,358.
Chemical Abstract 87:55532b, vol. 87, 1977.
Stigsson, Lars Lennart et al., PCT/SE82/00107, 4-5-82.

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