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Coal desulfurization prior to combustion [electronic resource].

Published:
Berkeley, Calif. : University of California, Berkeley, 1979.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators:
University of California, Berkeley and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Since current coal cleaning processes remove only a fraction of the total sulfur, the question arises as to what fraction of US coals can be cleaned within current EPA new source standards (1.2 lb. SO/sub 2/ per MMBTU). A number of studies has shown the fraction to be encouragingly large. A report on the applicability of the Meyers process estimates, on the basis of 35 coals sampled, that 40% of the samples could be burned cleanly after some combination of physical separation and chemical leaching. A report by Ergun on coal cleaning gives the higher estimate of cleanability of 56%, based on 455 samples properly weighted between Eastern and Western coals. Beyond this figure, Ergun estimates an additional 17% is cleanable if 30 to 40% of the organic sulfur is removed, bringing the total cleanable to 73%. Data from a study by Cavallaro, with coal reserves taken from a study by Beekers, give an estimate in agreement with that of Ergun on the amount of coal cleanable by pyrite removal. In summary, cleanable coal reserves increase by 33% if processes are used which can remove what are probably the more reactive organic sulfur species, such as aliphatic mercaptans, sulfides, and disulfides. A process which attacks the refractor thiophenic sulfur could conceivably increase the cleanable coal reserves by another 20 to 30%, assuming roughly equal distribution between reactive and refractory organic sulfur.
Report Numbers:
E 1.99:lbl-10118
lbl-10118
Subject(s):
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Note:
Published through SciTech Connect.
11/01/1979.
"lbl-10118"
Vermeulen, T.; Wrathall, J.; Ergun, S.
Funding Information:
W-7405-ENG-48
View MARC record | catkey: 13844024