Method of removing water from ethanol

Details Method of removing water from ethanol Method of removing water from ethanol

C - Chemistry, Metallurgy

07

C

260/641.8

C07C 29/76 (2006.01) C07C 31/08 (2006.01)

Patent

CA 1213617

A B S T R A C T The invention relates to a process for removing sufficient water from H2O ethanol at least 160 proof to produce ethanol having a proof of 195 or more and it comprises the steps of heating the ethanol water mixture until it is a vapor with sufficient superheat to pass through a dessicant bed of molecular sieves without condensing, and then passing the superheated ethanol water mixture through the bed to remove sufficient water to increase the proof of the ethanol to at least 195. A portion of the dehydrated ethanol is passed through a second dessicant bed of molecular sieves at less than atmospheric pressure to desorb the water and ethanol on the dessicant from a previous dehydration cycle, and the flow is reversed through the two beds after the temperature of the bed increases between 11°-14°C (20°-25°F).

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