Process for removal of sulfur and ash from coal

Details Process for removal of sulfur and ash from coal Process for removal of sulfur and ash from coal

1979-04-23

1981-04-14

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 24, 44 51, C10L 900, C10L 910

Patent

active

042616999

ABSTRACT:
A process for reducing the sulfur and ash content of coal wherein coal particles are treated with a conditioning agent in an aqueous slurry prior to agglomeration with a minor amount of hydrocarbon oil. After separation of the coal-oil agglomerate from ash and mineral matter remaining in the aqueous slurry, additional oil is added to provide a slurry of coal particles in hydrocarbon oil. Agglomeration of remaining ash and mineral matter is effected by addition of a minor amount of water. After separation of the mineral agglomerate and recovery from the oil slurry, treated coal particles are substantially reduced in ash and sulfur content.

REFERENCES:
patent: 3849111 (1974-11-01), Kihlstedt
patent: 4033729 (1977-07-01), Capes et al.
patent: 4138226 (1979-02-01), Verschuur
patent: 4155716 (1979-05-01), Sun et al.

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