Hydroliquefaction of sub-bituminous and lignitic coals to heavy

Details Hydroliquefaction of sub-bituminous and lignitic coals to heavy Hydroliquefaction of sub-bituminous and lignitic coals to heavy

1977-10-27

1979-04-10

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8, C10G 106, C10G 100

Patent

active

041487095

ABSTRACT:
In the hydroliquefaction of a sub-bituminous and/or lignitic coal, the inlet temperature to the hydroliquefaction zone is maintained at a temperature higher than those previously employed by providing recycle of hot liquid from the outlet portion of the hydroliquefaction zone. In this manner, the hydroliquefaction is operated at higher average temperatures, and total reaction volume is reduced, thereby reducing overall costs.

REFERENCES:
patent: 2987465 (1961-06-01), Johanson
patent: 3519555 (1970-07-01), Keithe et al.
patent: 3607719 (1971-09-01), Johnson
patent: 3617474 (1971-11-01), Stotler et al.
patent: 3705092 (1972-12-01), Gatsis
patent: 3966585 (1976-06-01), Gray et al.
patent: 4028221 (1977-06-01), Sze et al.
patent: 4045187 (1977-08-01), Brink et al.

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