Coal hydrogenation process using acid hydrolysis and...

Details Coal hydrogenation process using acid hydrolysis and... Coal hydrogenation process using acid hydrolysis and...

C - Chemistry, Metallurgy

10

G

196/5.6

C10G 1/08 (2006.01) C10G 1/00 (2006.01) C10G 1/04 (2006.01)

Patent

CA 1196876

ABSTRACT OF THE DISCLOSURE A coal hydrogenation process for producing hydrocarbon liquid and gas products, wherein an inorganic acid is added to a coal derived liquid fraction to cause precipitation of asphaltene and preasphaltene materials contained therein and to produce clean fuel oil products. In the process, the acid precipitation step overflow stream is preferably used for coal slurrying oil and is recycled to the reactor for further catalytic reaction. The precipitated material containing asphaltenes and preasphaltenes is further processed to recover desirable product oils. The acid precipitation step occurs at a temperature of about 400°F to about 600°F, and preferably, hydrochloric acid is used.

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