Extraction and/or extractive distillation of ethanol from aqueou

Details Extraction and/or extractive distillation of ethanol from aqueou Extraction and/or extractive distillation of ethanol from aqueou

1982-11-26

1984-06-19

Sever, Frank

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 39, 203 62, 203 63, B01D 334, B01D 340

Patent

active

044551983

ABSTRACT:
Ethanol is concentrated from ethanol-water mixtures by extraction or extractive distillation with a solvent which is a cyclic ketone of at least seven carbons or cyclic alcohol of at least eight carbons such a cyclohexylcyclohexanone or cyclohexylcyclohexanol. In the extractive distillation process, a first overheads is produced which can be made to be steam with minimal ethanol content and a second overhead is produced which can be made to be essentially pure ethanol. The preferred solvents are also non-toxic, such that the alcohol can be used for human consumption.

REFERENCES:
patent: 2537115 (1951-01-01), Scheibel
patent: 2591671 (1952-04-01), Catterall

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