Coal slurry and deoxygenating process for coal liquefaction

Abstract From the Canadian patent

A process for drying and deoxygenating coal-oil slurry prior to liquefaction of the coal. In the process the coal, having particle size of 30-375 mesh (U. S. Sieve Series) is mixed with a slurrying oil derived from a coal liquefaction process at 250-650°F mixing temperature and 0-150 psig pressure. During the mixing step, moisture in the coal is evolved to less than about 3.0 W % moisture remaining along, with substantial removal of the oxygen contained in the coal. The process produces a dried more reactive coal slurry for feed to a coal liquefaction process for achieving increased conversion of the coal and producing more desirable low boiling hydrocarbon liquid products.