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

Oil shale retorting method and apparatus

Patent ·
OSTI ID:6325718
Disclosed is an improved method and apparatus for the retorting of oil shale and the formation of spent oil shale having improved cementation properties. The improved method comprises passing feed comprising oil shale to a contacting zone wherein the feed oil shale is contacted with heat transfer medium to heat said shale to retorting temperature. The feed oil shale is substantially retorted to form fluid material having heating value and forming partially spent oil shale containing carbonaceous material. At least a portion of the partially spent oil shale is passed to a combustion zone wherein the partially spent oil shale is contacted with oxidizing gas comprising oxygen and steam to substantially combust carbonaceous material forming spent oil shale having improved cementation properties.
Assignee:
Standard Oil Co (Indiana)
Patent Number(s):
US 4377465
OSTI ID:
6325718
Country of Publication:
United States
Language:
English