PROCESS FOR SOLVENT DEASHING OF HYDROFINED COAL SOLUTION

摘要

Insoluble material is separated from a coal liquefaction product by use of a promoter liquid prepared from a fraction of the coal liquefaction product. The promoter liquid is prepared from a fraction having a 5 volume percent distillation temperature of at least 250 DEG F. preferably at least 400 DEG F. and a 95 volume percent distillation temperature of at least 350 DEG F. and no greater than 750 DEG F. by hydrogenating the fraction to raise the characterization factor thereof to at least 9.75.