Ethanol processing with vapour separation membranes

Details Ethanol processing with vapour separation membranes Ethanol processing with vapour separation membranes

C - Chemistry, Metallurgy

07

C

C07C 29/76 (2006.01) B01D 53/22 (2006.01) C07C 29/80 (2006.01) C12P 7/06 (2006.01)

Patent

CA 2581761

In a process for removing water from ethanol, a distillate is fed to a gas separation membrane unit. Permeate from the membrane is compressed and used as heating steam for further distillation. The membrane unit may have two or more stages. Permeate from a stage may be condensed and used as fermentation make up water, compressed and fed to the permeate from an upstream stage or heating steam, or fed to another membrane stage for further dewatering.

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