Brief description of the elimination of the ash and coking anthrax

摘要

Deashed solid coal effluent from a coal solvent deashing process in which raw coal is converted to deashed solid and liquid coal is passed to a delayed coker. The coker operates at a higher temperature than is employed in the solvent deashing process and produces deashed coke, liquid hydrocarbonaceous material including solvent boiling range liquid and hydrogen-containing gas. The hydrogen produced in the coker is derived from hydrogen which was previously consumed in the deashing step and can also include hydrogen contained in the raw coal. The solvent boiling range liquid and hydrogen produced in the coker are recycled to the solvent deashing step. Since the coker supplies a portion of the solvent required in the deashing step, the deashing step is operated to produce only a portion of its recycle liquid solvent requirement, thereby conserving hydrogen.