Coal liquefaction process and apparatus therefor

Details Coal liquefaction process and apparatus therefor Coal liquefaction process and apparatus therefor

1978-06-14

1980-08-26

Davis, C.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8R, C10G 106

Patent

active

042194032

ABSTRACT:
A coal liquefaction apparatus which comprises a slurry mixing tank, a preheater, a hydrogenation reactor, and a gas-liquid-solid separator or separators in series and a gas-liquid separator and at least one solid-liquid separator are interposed between the hydrogenation reactor and a dehydrogenation cyclopolycondensation reactor which is positioned upstream of the final gas-liquid-solid separator.
The coal liquefaction process comprises the steps of heat treating a slurry prepared by mixing coal fines with a hydrocarbon based solvent having a boiling point greater than 150.degree. C. in the presence of hydrogen at a temperature of 300.degree. to 500.degree. C. and a pressure of 50 to 700 atms, thereby forming a gas-liquid-solid mixture; separating and removing solids from said gas-liquid-solid mixture as a reaction product; separating and removing a residuum liquid fraction from said mixture; and heat treating said residuum liquid fraction in the presence of hydrogen at a low partial pressure at a temperature of 300.degree. to 500.degree. C. and a pressure of 50 to 700 atms.

REFERENCES:
patent: Re25770 (1961-06-01), Johanson
patent: 2913397 (1959-11-01), Murray et al.
patent: 3018242 (1962-01-01), Gorin
patent: 3117921 (1964-01-01), Gorin
patent: 3594303 (1971-07-01), Kirk et al.
patent: 3644192 (1972-02-01), Li et al.
patent: 3932266 (1976-01-01), Sze et al.

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