Desulfurization of coal by chlorinolysis. [10 refs]

Conference · Thu Jan 01 04:00:00 EST 1976 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:7261115

Ganguli, P S; Hsu, G C; Gavalas, G R; Kalfayan, S H

A simple method of chlorinolysis of coal in an organic solvent at a moderate temperature and atmospheric pressure has been proved to be effective in removing sulfur, particularly the organic sulfur, from coal. Preliminary experimental results of a high sulfur (4.77 percent S) bituminous coal show that up to 60 percent organic sulfur, 90 percent pyritic sulfur and 30 percent sulfate sulfur can be removed. This method also proved to be effective for another bituminous coal with high organic sulfur. The treated coal is dechlorinated by heating at a moderately high temperature. The presence of moisture helps to remove organic sulfur. However, no effect on sulfur removal has been observed by the addition of AlCl/sub 3/ as catalyst in the system. During chlorination the gain in sulfate sulfur in coal is equal to losses in pyritic and organic sulfur. An optional extraction step at 25/sup 0/C of treated coal with tetrahydrofuran yields more than 20 percent extract suitable for liquid fuel synthesis. Preliminary study of the chemistry and kinetics involved in this process of coal chlorinolysis is attempted.

• Research Organization: California Inst. of Tech., Pasadena
• OSTI ID: 7261115
• Conference Information: Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 21:7
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CATALYSIS
CHEMICAL REACTIONS
CHLORINATION
COAL
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENATION
MOISTURE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
REMOVAL
SULFUR