Record Display for the EPA National Library Catalog


Main Title Chemical Desulfurization of Coal: Report of Bench-Scale Developments. Volume 1.
Author Hamersm, J. W. ; Koutsouko, E. P. ; Kraf, M. L. ; Meyer, R. A. ; Ogl, G. J. ;
CORP Author TRW Systems Group, Redondo Beach, Calif.
Year Published 1973
Report Number EHSD-71-7; R2-73-173a;
Stock Number PB-221 405
Additional Subjects ( Coal preparation ; Desulfurization) ; Chemical cleaning ; Leaching ; Pyrite ; Iron chlorides ; Iron sulfate ; Cost estimates ; Capitalized costs ; Operating costs ; Air pollution ; Process variables ; Sulfur organic compounds ; Design ; Air pollution control ; Meyers process ; Sulfur content
Library Call Number Additional Info Location Last
NTIS  PB-221 405 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 184p
Bench-scale and laboratory tests were conducted for chemical removal of sulfur (S) from coal to produce a low sulfur coal to meet air quality standards. The method used was the Meyer's process in which pyritic sulfur is oxidized by ferric compounds to a water soluble form. Approximately 100% of pyritic S was removed, using aqueous ferric salt solutions which, for the four coals tested, corresponded to an absolute removal of 1-3.5% by coal weight of S. The heat content of the coal increased and the ash content decreased as a result of pyrite removal. The pyritic S was removed from the coal as elemental S (40 mole %) and iron sulfate (60 mole %). Process operating temperatures of 50-130C, pressures of 1-10 atm, residence times of 1-16 hrs, and coal top sizes from 1/4-in. to 100 mesh were evaluated. Preliminary process design and cost estimation for a 100-ton/hr coal desulfurization plant are given.