PROCESS AND SYSTEM FOR DEHYDRATING A PRODUCT STREAM IN ETHANOL PRODUCTION
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Oct 9, 2023
filing date -
May 7, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure provides processes and systems for ethanol production. In one embodiment, a first beer column receives a first portion of a feed mixture including ethanol and water to form a first beer column bottom stream and a first beer column vaporous overhead stream. A beer column receives a second portion of the feed mixture. A first portion of the first beer column bottom stream is forwarded to a first beer column reboiler. A second portion of the first beer column bottom stream is forwarded to a plurality of evaporators. A condensed portion of the first beer column vaporous overhead stream is forwarded to a stripper column. The stripper column forms a feed stream, which is contacted with a separation system, thereby forming a permeate and a retentate. The permeate is forwarded directly to at least one selected from the first beer column and the stripper column.
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