Production of hydrogenated coal liquids

Details Production of hydrogenated coal liquids Production of hydrogenated coal liquids

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 1089387

ABSTRACT OF THE DISCLOSURE In a coal liquefaction process wherein feed coal is contacted with molecular hydrogen and 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, combining a portion of the hot vapor stream with the combined vapor, hydrogen and coal liquids to the solvent hydrogenation zone as feed to the hydrogenation zone, discharging the remainder of the vapor stream as purge after cooling to recover vaporized hydrocarbons and removing contaminants, and thereafter catalytically hydrogenating the hydrogenation zone feed stream while quenching the hydrogenation reaction with fluids recovered from the hydro- genation zone effluent.

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