Coal liquefaction process

Details Coal liquefaction process Coal liquefaction process

1980-02-25

1982-05-18

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, C10G 106, C10G 100

Patent

active

043303919

ABSTRACT:
Disclosed is a two-stage process for the production of liquid hydrocarbons from coal. More particularly, disclosed is a two-stage coal liquefaction process wherein subdivided coal is substantially dissolved in a solvent in a first non-catalytic dissolving stage at the temperature in the range 750.degree. to 900.degree. F. In a second stage, the mixture of solvent, dissolved coal and insoluble solids is contacted with a hydrocracking catalyst at a critical temperature below 800.degree. F. The normally liquid portion of the hydrocracker effluent product has a surprisingly low sulfur content of less than 0.1 weight percent, a low nitrogen content of less than 0.5 weight percent, and a high API gravity of at least -3.

REFERENCES:
patent: 3488279 (1970-01-01), Schulman
patent: 3840456 (1974-10-01), Yavorsky et al.
patent: 3884796 (1975-05-01), Hinderliter et al.
patent: 3892654 (1975-07-01), Wright et al.
patent: 3925188 (1975-12-01), Lester
patent: 4018663 (1977-04-01), Karr
patent: 4032428 (1977-06-01), Johnson
patent: 4110192 (1978-08-01), Hildebrand et al.
patent: 4111788 (1978-09-01), Chervenak et al.
Chevron Research Company, Richmond Cal., Trip Report, Dahlberg, Jan. 8, 1975, Visit to U.S. Bureau of Mines, Dec. 6, 1974. Bruceton, Pa.

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