Three-stage coal liquefaction process

Details Three-stage coal liquefaction process Three-stage coal liquefaction process

1979-12-26

1981-11-17

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, C10G 106, C10G 100

Patent

active

043009964

ABSTRACT:
Disclosed is a three-stage process for liquefying coal in which a coal-solvent slurry is sequentially passed through a first dissolving stage and two catalytic reaction stages in series. The first catalytic reaction stage contains a catalyst having a selectivity for converting heptane insolubles to lower molecular weight compounds and a portion of the effluent from said stage is recycled for use as solvent in the dissolver. The second catalytic reactor is operated under hydrocracking conditions.

REFERENCES:
patent: 3143489 (1964-08-01), Gorin
patent: 3488279 (1970-01-01), Schulman
patent: 4085032 (1978-04-01), Aczel et al.
patent: 4085033 (1978-04-01), Plumlee
patent: 4123347 (1978-10-01), Maa

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