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Title: Particulate solids dryer with recycled hot-pebble heat exchange medium

Patent ·
OSTI ID:7272755

This patent describes an apparatus for removing volatile substances from particulate solids material such as earth contaminated with hydrocarbon liquids and the like. The apparatus comprising: an elongated housing defining an interior space; an elongated conveyor screw in the housing; means for conducting combustion gasses through the chamber; a quantity of heat exchange medium; means for transferring the heat exchange medium from the space into the chamber; means for conveying the heat exchange medium from the chamber to the space; means for permitting material mixed with the heat exchange medium to be discharged from the space while retaining the heat exchange medium in the space.

Assignee:
Atlantic Richfield Co., Los Angeles, CA
Patent Number(s):
US 4862601
Application Number:
PPN: US 7146003A
OSTI ID:
7272755
Resource Relation:
Patent File Date: 20 Jan 1988
Country of Publication:
United States
Language:
English