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Process for removal of hazardous air pollutants from coal

United States Patent

December 5, 2000
View the Complete Patent at the US Patent & Trademark Office
An improved process for removing mercury and other trace elements from coal containing pyrite by forming a slurry of finely divided coal in a liquid solvent capable of forming ions or radicals having a tendency to react with constituents of pyrite or to attack the bond between pyrite and coal and/or to react with mercury to form mercury vapors, and heating the slurry in a closed container to a temperature of at least about C. to produce vapors of the solvent and withdrawing vapors including solvent and mercury-containing vapors from the closed container, then separating mercury from the vapors withdrawn.
Akers; David J. (Indiana, PA), Ekechukwu; Kenneth N. (Silver Spring, MD), Aluko; Mobolaji E. (Burtonsville, MD), Lebowitz; Howard E. (Mountain View, CA)
Howard University (Washington, DC), CQ Inc. (Homer City, PA)
09/ 205,571
December 4, 1998
This invention was made with Government support under Contract No. DE-AC22-95PE95153 awarded by the Department of Energy. The Government has certain rights in this invention.