Method of removing water from ethanol

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

1982-06-01

1983-10-04

Sever, Frank

Gas separation

Means within gas stream for conducting concentrate to collector

55 35, 203 19, 203 41, B01D 300, B01D 5304

Patent

active

044076622

ABSTRACT:
A method is provided for removing sufficient water from H.sub.2 O ethanol at least 160 proof to produce ethanol having a proof of 195 or more comprising the steps of heating the ethanol water mixture until it is a vapor with sufficient superheat to maintain the vapor phase and prevent substantial capillary adsorption as the mixture passes through a dessicant bed of molecular sieves, passing the superheated ethanol water mixture through the bed to remove sufficient water to increase the proof of the ethanol of at least 195, passing a portion of the dehydratedethanol 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 reversing the flow through the two beds after the temperature of the first bed increases no more than about 14.degree. C. (25.degree. F.).

REFERENCES:
patent: 2137605 (1938-11-01), Derr
patent: 3122486 (1964-02-01), Skarstrom

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