Coal desulfurization process

Details Coal desulfurization process Coal desulfurization process

1976-08-27

1978-03-28

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 2, 201 17, C10L 910, C10B 5700

Patent

active

040812502

ABSTRACT:
A method of chlorinolysis of coal in an organic solvent at a moderate temperature and atmospheric pressure has been proven to be effective in removing sulfur, particularly the organic sulfur, from coal. Chlorine gas is bubbled through a slurry of moist coal in chlorinated solvent. The chlorinated coal is separated, hydrolyzed and then dechlorinated. Preliminary results of treating a high sulfutr (4.77%S) bituminous coal show that up to 70% organic sulfur, 90% pyritic sulfur and 76% total sulfur can be removed. The treated coal is dechlorinated by heating at 500.degree. C. The presence of moisture helps to remove organic sulfur.

REFERENCES:
patent: 887145 (1908-05-01), Stoner
patent: 2173842 (1939-09-01), Horner
patent: 2383543 (1945-08-01), Gray
patent: 2453543 (1948-11-01), Schabelitz
patent: 2503486 (1950-04-01), Himel
patent: 3535224 (1970-10-01), Corey et al.
patent: 3998604 (1976-12-01), Hinkley

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