Solvent extraction recovery of shale oil

Details Solvent extraction recovery of shale oil Solvent extraction recovery of shale oil

C - Chemistry, Metallurgy

10

G

196/16

C10G 1/04 (2006.01)

Patent

CA 1180294

Abstract An improved process for solvent extraction of organic matter from shale by two extraction steps in sequence. The extraction steps are: (a) treating a kerogen-containing shale with a solvent system comprising a combination of water and an alcohol at a temperature of about 375°-425°C, and (b) treating the product of (a) with a solvent system comprising a combination of an alcohol and another organic solvent at an elevated temperature, but not above about 425°C. The organic matter is recovered by separating the liquid which results from step (b) from the shale solids.

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