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US 4,308,106 AGranted
Process for removing substantially all water from an alcohol-containing solution for use as a motor fuel or motor fuel additive
OwnerRobert L. Mannfeldinventor
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Abstract
A process and still for removing substantially all water from an alcohol-containing solution. The solution is distilled in a rectification column under reduced pressure of about 40 mm Hg or less, and the distillate later collected and condensed having a water content of about 2% by volume or less. Heating for distilling the original solution and cooling for condensing the distilled alcohol vapors are supplied to the system by an external, closed-loop heat pump.
Claims6
A process for removing substantially all water from an ethyl alcohol-containing solution, comprising the steps of:
- (a) charging a boiler with an ethyl alcohol- and water-containing solution;
- (b) distilling the solution in the absence of an entrainer in a single distillation column with reflux to achieve a distillate having a water content of about 2% or less by volume;
- (c) placing the column under reduced pressure of about 40 mm Hg or less and maintaining the same during said distilling;
- (d) collecting and condensing the distillate in a condenser;
- and
- (e) supply heating for said distilling and cooling for said condensing from a heat pump.
3 more elements
Dependencies are inferred from the claim text.