Process for treating high-sulfur caking coals to inactivate the

Details Process for treating high-sulfur caking coals to inactivate the Process for treating high-sulfur caking coals to inactivate the

1981-07-21

1985-06-11

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 15R, 201 17, C10L 902, C10L 912

Patent

active

045226261

ABSTRACT:
A one or two-step process of treating high-sulfur caking coals for desulfurization, elimination of caking tendencies and incorporation of gasification catalyst thereon prior to steam- or hydrogasification thereof, or its use as a boiler fuel. In the one step process the coal is subjected to an aqueous lime/O.sub.2 (or air) treatment under controlled conditions of time, temperature and pressure to accomplish the foregoing, whereas in the two-step process the coal is first treated with oxygen or air in dilute alkaline slurry at elevated temperature and pressure to remove the sulfur and then treated with a lime slurry, under controlled temperature conditions to incorporate the catalytic inducing lime.

REFERENCES:
patent: 3640016 (1972-02-01), Lee et al.
patent: 3824084 (1974-07-01), Dillon et al.
patent: 4054420 (1977-10-01), Loganbach
patent: 4095955 (1978-06-01), Stambaugh et al.
patent: 4097244 (1978-06-01), Burk, Jr. et al.
patent: 4111755 (1978-09-01), Bane et al.
patent: 4118201 (1978-10-01), Yan
patent: 4204843 (1980-05-01), Neavel
patent: 4213765 (1980-07-01), Wilson
patent: 4234319 (1980-11-01), Beeson

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