Silicone oil recovery
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United States of America Patent
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-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Jun 22, 1988
filing date -
Jun 22, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the recovery of silicone oil and chlorobenzenes from a mixture containing silicone oil, chlorobenzenes, and polychlorinated biphenyls comprising: (a) introducing the mixture into a distillation zone at a temperature and a pressure which will cause the chlorobenzenes to flash overhead and the mixture of silicone oil and polychlorinated biphenyls to pass to the bottom of the zone; and (b) removing the bottoms from step (a), cooling same, and passing the bottoms through at least one bed of activated carbon, which is an adsorbent for polychlorinated biphenyls.
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