From: Thomsons [EMAIL PROTECTED]
Reply-To: biofuel@yahoogroups.com
To: biofuel@yahoogroups.com
Subject: [biofuel] Azeotropic ditillation
Date: Tue, 12 Feb 2002 21:31:08 -
Can anyone give sond tchnical data as to why azeotropic ditillation is no
longer used comercially? Will the use of molecular sieves be overtaken by
pervaporation with membranes to produce 200 proof ethanol?
Andy Thomson
Dear Andy,
I am a chemist by education, but little have I used (or remember) what I
learned years ago. I do environmental now, so most of what I do is specific
to that.
I do know that distillation takes Lots of heat energy. So this is a big
negative.
However
At one time I worked for a company that made oxygen concentrators. They
used molecular sieve material in a reciprocating flow system to separate
oxygen from nitrogen.
I wonder if a similar system could be used to concentrate ethanol in a much
more efficient manner than distillation?
Yours,
John Taylor
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