Method of beneficiating coal

Details Method of beneficiating coal Method of beneficiating coal

1983-09-22

1985-12-24

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

C10L 902

Patent

active

045603901

ABSTRACT:
A process for reducing the sulfur and ash content of coal is provided. The process involves cleaning the coal of debris and pulverizing it. The pulverized coal is contacted with a reagent selected from the group consisting of aqueous solutions of active nitrogen containing compounds, aqueous solutions of organic compounds containing at least one hydroxyl group, surfactants containing active ammonium groups and combinations thereof. The coal is washed with water and dried.

REFERENCES:
patent: 3988120 (1976-10-01), Chia
patent: 4162898 (1979-07-01), Anthony et al.
patent: 4167397 (1979-09-01), Grant
patent: 4169710 (1979-10-01), Jensen
patent: 4226601 (1980-10-01), Smith
patent: 4233034 (1980-11-01), Miller et al.
patent: 4256464 (1981-03-01), Ray
patent: 4304573 (1981-12-01), Burgess et al.
patent: 4305815 (1981-12-01), Hefner, Jr.
patent: 4328002 (1982-05-01), Bender
patent: 4332593 (1982-06-01), Burgess et al.
"Coal Desulfurization Prior to Combustion", Robert C. Eliot, EPA Studies, pp. 103-106, Noyes Data Corp., Park Ridge, N.J., 1978.

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