Three-stage coal liquefaction process

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

1979-10-22

1981-04-28

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

C01G 106

Patent

active

042644305

ABSTRACT:
Disclosed is a three-stage process for liquefying coal. In the process subdivided coal is slurried with a hydrogen-lean hydrogen-donor solvent and passed through a dissolving zone at a temperature in the range 400.degree.-480.degree. C. and at a space velocity in the range 2-150 hr..sup.-1 to substantially dissolve said coal. The effluent from the dissolver is stabilized with a hydrogen-rich hydrogen-donor solvent in a stabilization zone at a temperature in the range of 400.degree.-440.degree. C. and at a space velocity in the range 1-12 hr..sup.31 1 to partially hydrogenate the dissolved coal. A portion of the effluent from the stabilizer is recycled for use as hydrogen-lean hydrogen-donor solvent and the remainder is passed to a catalytic reaction stage operating under hydrocracking conditions to produce the net product and hydrogen-rich hydrogen-donor solvent.

REFERENCES:
patent: 3018242 (1962-01-01), Gorin
patent: 3852182 (1974-12-01), Sze et al.
patent: 4152244 (1979-05-01), Raichle et al.

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