Process for reducing the sulfur content of coal and coal char an

Details Process for reducing the sulfur content of coal and coal char an Process for reducing the sulfur content of coal and coal char an

1975-11-07

1980-02-12

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1SR, 201 17, C10L 910, C10B 5700

Patent

active

041881915

ABSTRACT:
This invention covers a process for reducing the sulfur content of coal and coal char and the ignition temperature of coal char. Coal is converted into char at temperatures not in excess of about 1600.degree. F. The char is introduced into a caustic system which is maintained at a temperature between about 500.degree. F. to about 750.degree. F. Intimate contact is maintained between the caustic and the char for a period of about 2 to 30 minutes to leach the sulfur from the char. The desulfurized char is thereafter separated from the caustic and washed.

REFERENCES:
patent: 2878163 (1959-03-01), Hutchings
"The Effect of Molten Caustic on Pyritic Sulfur in Bituminous Coal" by P. X. Masciantonio from "Fuel", vol. 44, pp. 269-275-London.

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