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

Oil shale retort flue gas cooling and cleaning

Patent ·
OSTI ID:6554905
A technique is described for cooling the flue gas or off gas from the bottom of an in situ oil shale retort. The gas is collected in a conduit that has a vertical portion through which the gas flows upward. It is then withdrawn from the retort through a gas-tight bulkhead. Water is sparged downward through the vertical portion of the conduit for cooling and cleaning the gas. Means are provided for draining the sparged water into a sump at the bottom of the retort wherein oil and water are collected. Water and oil are separated, and the water may be recycled for additional cooling. (6 claims)
Assignee:
Occidental Petroleum Corp
Patent Number(s):
US 3915498
OSTI ID:
6554905
Country of Publication:
United States
Language:
English