LIQUID-PHASE AND VAPOR-PHASE DEHYDRATION OF ORGANIC / WATER SOLUTIONS
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United States of America Patent
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app pub date -
Jul 26, 2011
filing date -
Mar 6, 2007
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Abandoned
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Abstract
Disclosed herein are processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol.
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