Production of dry alcohol
AssigneeBHS Technology LLC
InventorsChristopher J. Brown, Marian Simo, Vladimir Hlavacek
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Abstract
A process for producing dry alcohol (including ethanol) that comprises at least one stage wherein a gaseous feedstock, which includes alcohol and water, is contacted with carbon monoxide in the presence of a water-gas shift catalyst, at a temperature sufficiently high so that carbon monoxide and water are consumed and carbon dioxide and hydrogen are produced, thereby removing a portion of the water. The process may include multiple stages; the dry alcohol produced contains 99.5 wt. % or greater of alcohol and 0.5 wt. % or less of water.
Claims37
A process for producing dry alcohol comprising the step of contacting a gaseous feedstock, consisting essentially of alcohol and water, with carbon monoxide in the presence of a water-gas shift catalyst at a temperature sufficiently high so that carbon monoxide and water are at least partially consumed and carbon dioxide and hydrogen are formed, thereby removing a portion of said water from said gaseous feedstock to produce said dry alcohol consisting essentially of a mixture of alcohol and residual water.
A process for producing dry alcohol comprising the steps of:
- a) contacting a gaseous feedstock, consisting essentially of alcohol and water, with carbon monoxide in the presence of a water-gas shift catalyst at a temperature sufficiently high so that carbon monoxide and water are at least partially consumed and carbon dioxide, hydrogen, and heat are produced, thereby removing a portion of said water;
- b) recovering the dry alcohol and c) utilizing said heat to produce high-pressure steam.
A low-pressure process for producing methanol in the presence of alcohol to produce a dried alcohol stream comprising the step of contacting a gaseous feedstock, consisting essentially of alcohol and water, with carbon monoxide in the presence of a water-gas shift catalyst at a temperature sufficiently high so that carbon monoxide and water are at least partially consumed and carbon dioxide and hydrogen are formed, and at a pressure below about 40 atmospheres, and thereby forming said methanol in the presence of alcohol to produce a dried alcohol stream.
Dependencies are inferred from the claim text.