VERFAHREN ZUM KONZENTRIEREN VON ALKOHOLWASSERLOESUNGEN MITTELS PERVAPORATION

Antero Ahvenainen (Inventor), Johan-Fredrik Selin (Inventor), Kaarina Savolainen (Inventor), Jukka Seppälä (Inventor)

Research output: Patent

Abstract

In a process for concentrating an aqueous solution of an alcohol by pervaporation technique, that is by conducting the alcoholic solution onto one side (14a) of a semipermeable membrane (20) located in an enclosed space (14) and by removing from the other side (14b) of the membrane vaporizing permeate which has diffused through the membrane (20) and which is of changed alcohol concentration, the semipermeate membrane (20) is formed of cellulose carbamate.

Original languageEnglish
Patent numberDE3714784
IPCC08B 3/ 14 A I
Priority date14/05/1986
Publication statusAccepted/In press - 19 Nov 1987
MoE publication typeH1 Granted patent

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