Ash removal and synthesis gas generation from heavy oils produced by coal hydrogenation
OwnerWilburn C. Schroederinventor
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Abstract
Coal hydrogenation processes which produce a residual fraction containing carbonaceous material and ash as well as the desired hydrocarbon product fractions are improved by introducing the residual fraction into an oxidation reactor operating under tangential gas velocities and at a temperature in excess of that of the fusion temperature of the ash. Molten ash drips from the side walls of the reactor and hot hydrogen containing gases are generated for use in the hydrogenation process.
Claims7
A continuous process for the hydrogenation of coal, comprising introducing particulate coal to a hydrogenation zone, reacting the coal in said zone under hydrogenation conditions with hydrogen-containing gases to produce an effluent containing a gaseous component, distillable oils, heavy oils and tars, unreacted coal, carbon and ash, separating said gaseous component and vacuum distilling light oils from a pumpable residue containing said heavy oils and tars, unreacted coal, carbon and ash, introducing at least a portion of said pumpable residue into a partial oxidation reactor operating at a temperature above about 2400.degree. F. to generate hot gases containing hydrogen and carbon monoxide and convert the ash to molten form, introducing said hot gases from the partial oxidation reactor into the hydrogenation zone to provide at least a portion of the hydrogen requirement for the hydrogenation reaction, and removing molten ash from said oxidation reactor.
Dependencies are inferred from the claim text.