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

Processes including the production of non-congealing shale oil from oil shales

Patent ·
OSTI ID:6528704
Oil shale is partially dehydrated prior to retorting. Both the dehydrating and retorting steps are carried out by heat treatment in rotating horizontal cylindrical vessels heated by indirect heat exchange with hot gas. The vapors withdrawn from the retorting step are fractionated to yield products including a heavy conversion oil.
Assignee:
TIC; ERA-04-015258; EDB-79-023804
Patent Number(s):
US 4105536
OSTI ID:
6528704
Country of Publication:
United States
Language:
English