Improved solvent extraction recovery of shale oil. [DOE patent application]
Description:
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…
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Date:
July 20, 1981
Creator:
McKay, John F. & Chong, Shuang-Ling
Partner:
UNT Libraries Government Documents Department