Integrated coal cleaning, liquefaction, and gasification process

Details Integrated coal cleaning, liquefaction, and gasification process Integrated coal cleaning, liquefaction, and gasification process

1978-10-23

1980-08-12

Levine, Herbert

Mineral oils: processes and products

Phenolic or toxic oils

208 10, C10G 106

Patent

active

042172012

ABSTRACT:
Coal is finely ground and cleaned so as to preferentially remove denser ash-containing particles along with some coal. The resulting cleaned coal portion having reduced ash content is then fed to a coal hydrogenation system for the production of desirable hydrocarbon gases and liquid products. The remaining ash-enriched coal portion is gasified to produce a synthesis gas, the ash is removed from the gasifier usually as slag, and the synthesis gas is shift converted with steam and purified to produce the high purity hydrogen needed in the coal hydrogenation system. This overall process increases the utilization of as-mined coal, reduces the problems associated with ash in the liquefaction-hydrogenation system, and permits a desirable simplification of a liquids-solids separation step otherwise required in the coal hydrogenation system.

REFERENCES:
patent: 2082467 (1937-06-01), Prins
patent: 2840462 (1958-06-01), Gorin
patent: 3233731 (1966-02-01), Nailler
patent: 3715301 (1973-02-01), Tassoney et al.

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