APPARATUS AND METHOD FOR PUMPING HOT, EROSIVE SLURRY OF COAL SOLIDS IN COAL DERIVED, WATER IMMISCIBLE LIQUID

摘要

An apparatus for a method of pumping hot, erosive slurry of coal solids in a coal derived, water immiscible liquid to higher pressure involves the use of a motive fluid which is miscible with the liquid of the slurry. The apparatus includes a pump (12), a remote check valve (14) and a chamber (16) between and in fluid communication with the pump (12) and check valve (14) through conduits (18), (20). Pump (12) exerts pressure on the motive fluid and thereby on the slurry through a concentration radient of coal solids within chamber (16) to alternately discharge slurry under pressure from the outlet port of check valve (14) and draw slurry in through the inlet port of check valve (14).