Continuous operation supercritical fluid treatment process and system
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United States of America Patent
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May 24, 1994
Grant Date -
N/A
app pub date -
Jun 1, 1992
filing date -
Jun 1, 1992
priority date (Note) -
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Abstract
A system for continuously processing items using supercritical fluid wherein the main process vessel in which the items are cleaned or extracted is continuously pressurized with supercritical fluid. The continuous pressurization of the main process vessel is achieved by using an entry airlock to initially pressurize the item to be processed prior to transport into the main process vessel. An exit airlock is provided to depressurize the item after cleaning or extraction in the main process vessel. The system also provides for pretreatment of the items in the entry airlock prior to processing in the main vessel. Post-treatment may also be provided in the exit airlock when desired.
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