Liquefaction of coal

Mineral oils: processes and products – Products and compositions – Lubricating oils

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208 47, C10G 106

Patent

active

043881726

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.

REFERENCES:
patent: 1852988 (1932-04-01), Varga
patent: 2221952 (1940-11-01), Pier et al.
Kirk-Othmer, "Sulfur (Sulfur Compounds)" in Encyclopedia of Chemical Technology, 2nd Ed. (1963), vol. 19, pp. 376-377.
Thorpe, "Sodium" in Thorpe's Dictionary of Applied Chemistry, 4th Ed. (1937), vol. 10, pp. 890-891.

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