TWO STAGE COAL LIQUEFACTION PROCESS WITH PROCESS-DERIVED SOLVENT

摘要

Disclosed is a two-stage process for the production of clean liquid hydrocarbons from coal. In the process subdivided coal is dissolved in a process derived solvent at a temperature in the range 425 DEG -480 DEG C. The dissolver effluent is passed through a catalytic reactor operating under hydrocracking conditions, including a temperature in the range 340 DEG -400 DEG C. to produce normally liquid products and recycle solvent. The solvent is further subjected to treatment with an antisolvent to precipitate unconverted asphaltenes prior to recycle to the dissolution stage.