COAL CLEANING EFFECTS DURING H-COAL CATALYTIC LIQUEFACTION OF A WESTERN KENTUCKY COAL

摘要

Two H-Coal bench-scale liquefaction tests were performed to com pare the hydroliquefaction behavior of two Kentucky No.11 coals from the same mine:a run-of-mine coal with 17.49 W % ash and a deep-cleaned coal with 6.21 W % ash. The tests were conducted using a syncrude mode of operation.nThe deep-cleaned coal exhibited greater coal conversion and greater residual oil yield than the run-of-mine coal. On a dry coal basis, the deep-cleaned coal yielded approximately 19% more C4 to 9750F distillate than the run-of-mine coal. The process requirement of a pumpable vacuum still bottoms product would result in a 10% higher C4 to 975°F yield from the deep-cleaned coal than from the run-of-mine coal in a commercial H-Coal plant.