NASA NTRS · 19780023584
Coal desulfurization process
Abstract
A method for chlorinolysis of coal is an organic solvent at a moderate temperautre 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 the dechlorinated. Preliminary results of treating a high sulfutr (4.77%S) bituminous coal show that up to 70% organic sulfur, 90% hyritic sulfur and 76% total sulfur can be removed. The treated coal is dechlorinated by heating at 500 C. The presence of moisture helps to remove organic sulfur.
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Hsu, G. C., Gavalas, G. R., Ganguli, P. S., Kalfayan, S. H.. 1978-03-28. Coal desulfurization process. https://ntrs.nasa.gov/citations/19780023584
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