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

Treatment of shale

Patent ·
OSTI ID:7213340

A process is described for distilling oil shale comprising continuously blowing the finely divided oil shale with sodium chloride into an elongated chamber and cooling portions of the vapors evolved during the destructive distillation of the shale by withdrawing the vapors from the chamber at various levels and returning them with condensate to the chamber. The flow of the shale through the chamber is retarded by injecting a stream of superheated steam in direction opposing the flow of the shale, and injecting into the chamber near the bottom a gaseous fuel mixture of air and fuel proportioned to produce a flame to destructively distill the oil shale.

Assignee:
Petroleum Derivatives, Inc.
Patent Number(s):
US 1773839
OSTI ID:
7213340
Country of Publication:
United States
Language:
English