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

Shale retorting process and apparatus

Patent ·
OSTI ID:6157406

Crushed oil shale is segregated into a major portion of relatively large particles and a minor portion of ''fines,'' such as will pass through 1/8 -inch screen openings. The large particles are subjected to retorting in an upflowing bed in countercurrent contact with a downflowing hot eduction gas, while the fines are fed onto and controllably transported across the hot planar surface of a free-standing truncated cone of spent shale at the top of the retort.

Assignee:
Union Oil Co Of California
Patent Number(s):
US 4243510
OSTI ID:
6157406
Country of Publication:
United States
Language:
English