Oil shale extraction process

Details Oil shale extraction process Oil shale extraction process

1984-09-14

1985-08-06

Gantz, D. E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, C10G 104

Patent

active

045334609

ABSTRACT:
Hydrocarbon liquids are recovered from oil shale and other solids containing organic matter by passing a liquid organic solvent downwardly through an extraction zone in contact with said solids at an elevated pressure sufficient to maintain said solvent in the liquid phase and at a temperature below about 900.degree. F., preferably between about 650.degree. F. and about 900.degree. F., in order to extract hydrocarbons from the solids into the solvent. The extracted hydrocarbons are then recovered from the solvent by fractionation. Normally, heat is supplied to the extraction zone by passing a hot, nonoxidizing gas, preferably an oxygen-free gas generated within the process, downwardly through the extraction zone in cocurrent flow with the liquid organic solvent.

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