Liquefaction of coal
AssigneeRuhrkohle Aktiengesellschaft
InventorsBernhard Rodewald, Kurt Tippmer, Hans F. Tamm
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Abstract
In a method for the liquefaction of coal which has chlorine-containing compounds therein, which method comprises the hydrogenation of the coal in the presence of a catalyst, the improvement which comprises neutralizing the compounds with an alkali metal hydrogen sulfide whereby H.sub.2 S is produced. In a preferred form of the invention, the H.sub.2 S is reacted with an alkali metal hydroxide to produce the alkali metal hydrogen sulfide which, in turn, is recycled into the hydrogenation step.
Claims8
In a method for the liquefaction of coal having chlorine-containing compounds comprising hydrogenation of said coal in the presence of a catalyst, the improvement which comprises neutralizing said compounds with alkali metal hydrogen sulfide whereby H.sub.2 S is produced.
Dependencies are inferred from the claim text.