Liquefaction of coal

Details Liquefaction of coal Liquefaction of coal

1976-07-23

1977-09-13

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

C10G 106

Patent

active

040480542

ABSTRACT:
In a coal liquefaction process wherein feed coal is contacted 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 vapor; 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.

REFERENCES:
patent: 3505203 (1970-04-01), Nelson
patent: 3645885 (1972-02-01), Harris et al.
patent: 3700583 (1972-10-01), Salamony et al.
patent: 3726784 (1973-04-01), Correa et al.
patent: 3726785 (1973-04-01), Keller et al.

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