Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1980-09-10
1982-05-25
Gantz, Delbert E.
Mineral oils: processes and products
Products and compositions
Lubricating oils
C10G 106
Patent
active
043315313
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. to 480.degree. C. and at a space velocity in the range 2 to 150 hrs..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. to 440.degree. C. and at a space velocity in the range 1 to 12 hrs..sup.-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: 3583900 (1971-06-01), Gatsis
patent: 3852182 (1974-12-01), Sze et al.
patent: 4123347 (1978-10-01), Maa
patent: 4152244 (1979-05-01), Raichle et al.
Chevron Research Company
Gantz Delbert E.
Hooper W. H.
Newell D. A.
Uzzell A. H.
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