Method and system for distilling alcohol in an alcohol production process
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United States of America Patent
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Aug 27, 2019
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app pub date -
Jan 7, 2019
filing date -
Jan 7, 2019
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Abstract
A method and system for distilling alcohol in an alcohol production process is disclosed. The method can include fermenting a mixture of water and milled grain to produce alcohol-laden beer, which can be distilled in a beer column maintained at a subatmospheric pressure to produce a vapor, primarily including alcohol, and whole stillage. Stillage is separated from the whole stillage. Water is evaporated from the separated stillage to produce first-concentrated stillage and first effect steam. Water from the first-concentrated stillage is evaporated with heat from the first effect steam to produce second effect steam. In one embodiment, second effect steam can be used to supply sufficient heat to a side stripper for distilling the alcohol-laden beer. In another embodiment, the method can include generating steam from one or more steam generator to supply sufficient heat to the beer column for distilling the alcohol-laden beer.
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