Mineral oils: processes and products – Phenolic or toxic oils
Patent
1978-05-08
1980-09-16
Gantz, Delbert E.
Mineral oils: processes and products
Phenolic or toxic oils
208 10, C10G 100, C10G 106
Patent
active
042228441
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; dividing the cooled vapor into at least two streams; passing the cooling vapors from one of the streams, the coal liquids in the solvent boiling range, and makeup hydrogen to a solvent hydrogenation zone, catalytically hydrogenating the coal liquids in the solvent boiling range and quenching the hydrogenation zone with cooled vapors from the other cooled vapor stream.
REFERENCES:
patent: 3583900 (1971-06-01), Gatsis
patent: 3617465 (1971-11-01), Wolk
patent: 4045328 (1977-08-01), Green et al.
Exxon Research & Engineering Co.
Gantz Delbert E.
Hoover Wayne
Wright William G.
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