Method and apparatus for purifying alcohol
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United States of America Patent
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May 17, 2016
Grant Date -
Jun 12, 2014
app pub date -
Jul 10, 2012
filing date -
Jul 15, 2011
priority date (Note) -
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Abstract
A method of purifying an alcohol, such as isopropyl alcohol, includes a first ion exchange step of performing ion exchange treatment on an alcohol-containing liquid; a step of performing dehydration treatment using a dehydration membrane on the liquid treated in the first ion exchange step; a distillation step of performing distillation on the dehydration-treated liquid; and a second ion exchange step of further performing ion exchange treatment on the liquid obtained in the distillation step to obtain a purified alcohol.
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