Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1980-06-27
1981-12-22
Bascomb, Jr., Wilbur L.
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
203 22, 203 23, 203 25, 203 42, 203 94, 203DIG9, 203DIG13, 203DIG19, 202158, 202159, 202174, 568916, B01D 314, C07C 2980, C07C 3108
Patent
active
043069428
ABSTRACT:
An improved distillation method and apparatus are provided for recovering hydrous ethanol from fermentation or synthetic feedstocks. Substantial energy savings are realized by utilizing a pair of stripper-rectifier towers in which overhead vapors from one tower operating at a higher pressure supply the heat required for the other tower operating at a lower pressure and by preheating the feedstock in multiple heat exchange steps. The feedstock is split into two portions of unequal size, the larger portion being supplied to the higher pressure tower and the smaller portion to the lower pressure tower.
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Brush Burke F.
Katzen Raphael
Bascomb, Jr. Wilbur L.
Raphael Katzen Associates International Inc.
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