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U.S. Department of Energy
Office of Scientific and Technical Information

Improved solvent extraction recovery of shale oil. [DOE patent application]

Patent ·
OSTI ID:5319235

An improved process for solvent extraction of organic matter from shale by two extraction steps in sequence. The extraction steps are: (1) treating a kerogen-containing shale with a solvent system comprising a combination of water and an alcohol at a temperature of about 375 to 425/sup 0/C; and (2) treating the product of (1) with a solvent system comprising a combination of an alcohol and another organic solvent at an elevated temperature, but not above about 425/sup 0/C. The organic matter is recovered by separating the liquid which results from step (2) from the shale solids.

Assignee:
Dept. of Energy
Patent Number(s):
None
Application Number:
ON: DE82013590
OSTI ID:
5319235
Country of Publication:
United States
Language:
English