Volatile organic compound recovery system and method
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United States of America Patent
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Feb 17, 2015
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N/A
app pub date -
Jun 1, 2009
filing date -
Jun 4, 2008
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Abstract
The present invention provides for passive VOC recovery in the fermentation process that does not affect or minimally affects the conditions within the fermentor vessel and does not affect or minimally affects the conditions within the headspace of the fermentor vessel itself while using the production of CO2 emitted during the fermenting process as the source of driving energy to move a portion of the gaseous/vaporous material in the headspace of the fermentor through an appropriately sized conduit to a chilled surface condensing device to condense the VOCs (principally ethanol) for recovery and to exhaust the CO2 to the atmosphere or to recover the CO2 for other uses. The conduit from the headspace of the fermentor to the condenser is sized to provide a flow restriction in a selected range such that the headspace equilibria are not affected while allowing a portion of the gaseous/vaporous material in the headspace to move through the conduit in response to the generation of the CO2 during the fermentation process.
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