US 4,541,916 AGranted

Coal liquefaction process using low grade crude oil

AssigneeGulf Research & Development Company

InventorsHarold Beuther, Thaddeus P. Kobylinski, Win-Chung Lee, Bruce K. Schmid

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Abstract

A process for converting coal to liquid hydrocarbonaceous products involving a liquefaction reaction in the presence of a coal derived recycle slurry and a non-coal derived solvent comprising a hydrocarbonaceous oil or distillation bottom residue thereof intrinsically contaminated with greater than 300 ppm total of vanadium and nickel. The liquefaction reaction is performed under hydrogen pressure (approximately 500-4000 psi) and under elevated temperature (approximately 300.degree.-500.degree. C.) using a weight ratio of non-coal derived solvent to coal of about 1/1 or less. The conversion of coal to liquids is greatly enhanced by the use of such a non-coal derived solvent under these conditions.

Claims11

Dependent claims

A continuous process for converting solid coal to gaseous and liquid hydrocarbonaceous products comprising:

admixing particulate solid coal, coal derived process solvent, coal derived recycle slurry, and a non-coal derived hydrogen donor solvent consisting essentially of a hydrocarbonaceous oil intrinsically containing greater than about 300 ppm of vanadium plus nickel contaminants, and at least 50% of residuum boiling over 600.degree. F., the admixture having a non-coal derived solvent/coal weight ratio of about 1/1 or less;
and
reacting said admixture in the absence of an external catalyst source, under hydrogen pressure ranging from about 500 to about 4000 psi and elevated temperature from about 300.degree. C. to about 500.degree. C. for a period of time sufficient to convert a portion of the solid coal to gaseous and liquid hydrocarbonaceous products.

Dependencies are inferred from the claim text.