PROCESS TO REMOVE PRODUCT ALCOHOL FROM A FERMENTATION BY VAPORIZATION UNDER VACUUM
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United States of America Patent
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Issued Date -
Apr 10, 2014
app pub date -
Dec 6, 2013
filing date -
Sep 2, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fermentation liquid feed including water and a product alcohol and optionally CO2 is at least partially vaporized such that a vapor stream is produced. The vapor stream is contacted with an absorption liquid under suitable conditions wherein an amount of the product alcohol is absorbed. The portion of the vapor stream that is absorbed can include an amount of each of the water, the product alcohol and optionally the CO2. The temperature at the onset of the absorption of the vapor stream into the absorption liquid can be greater than the temperature at the onset of condensation of the vapor stream in the absence of the absorption liquid. The product alcohol can be separated from the absorption liquid whereby the absorption liquid is regenerated. The absorption liquid can include a water soluble organic molecule such as an amine.
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