| 摘要 |
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.
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