Liquefaction of coal

Details Liquefaction of coal Liquefaction of coal

C - Chemistry, Metallurgy

10

G

196/5.2

C10G 1/00 (2006.01) C10G 1/04 (2006.01) C10G 1/06 (2006.01)

Patent

CA 1089386

ABSTRACT OF THE DISCLOSURE In a coal liquefaction process wherein feed coal is con- tacted with molecular hydrogen and a hydrogen-donor solvent in a liquefaction zone to form coal liquids and vapors and coal liquids in the solvent boiling range are thereafter hydrogenated to produce recycle solvent and liquid products, the improvement which comprises separating the effluent from the liquefaction zone into a hot vapor stream and a liquid stream; cooling the entire hot vapor stream sufficiently to condense vaporized liquid hydrocarbons; separating condensed liquid hydrocarbons from the cooled vapors; fractionating the liquid stream to produce coal liquids in the solvent boiling range; passing the cooled vapor, the coal liquids in the solvent boiling range, and makeup hydrogen to the solvent hydrogenation zone as feed to the hydrogenation zone; and thereafter catalytically hydrogenating the hydrogenation zone feed stream while quenching the hydrogenation reaction with fluids recovered from the hydrogenation zone effluent.

282517

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