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Coal desulfurization process

Patent ·
OSTI ID:6944682
; ; ;
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 sulfur (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/sup 0/C. The presence of moisture helps to remove organic sulfur.
Assignee:
California Inst. of Tech.
Patent Number(s):
US 4081250
OSTI ID:
6944682
Country of Publication:
United States
Language:
English

Similar Records

Desulfurization of coal by chlorinolysis. [10 refs]
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Coal desulfurization by low temperature chlorinolysis. Final report for Phase I, July 6, 1977--Nobvember 6, 1977
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Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORINATION
COAL
COAL PREPARATION
COMMINUTION
DESULFURIZATION
DISSOLUTION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENATION
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LEACHING
NONMETALS
RECOVERY
REMOVAL
SEPARATION PROCESSES
SULFUR
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE