Ronald,
These work and this is how most commercial anhydrous fuel is
made. The grade/size used with ethanol is 3A. Most of the plants are
designed in the States by 3 or 4 companies with most of them being made in
Brazil by one company largely for cost reasons . This is the most efficient
way of removing water with the molecular sieve being able to be regenerated
over and over but unfortunately to be really efficient the plants need to be
really large with one or two beds being regenerated while the other is being
used. The molecular sieve is expensive. I have done quite a lot of work on
this in the past and could design a small plant but dont have the money to
do. In Brazil I believe they use bagasse in a number of plants to fire the
boilers to keep the cost down. As such it is not getting rid of the water
that is the problem as much as recovering the ethanol that is removed along
with it.If you are losing ethanol that is just going up into thin air during
the drying process the manufactured cost of your ethanol quickly rises.
One way that has been used in the past and is still used to remove water is
the process of distillation with glycol. This surfices to a certain stage
but is energy costly so molecular sieve generation is increasing
particularly as plants grow. In the States while the overall output has
increased dramatically the number of plants has actually gone down although
there are always small new players entering the field all the time. ADM did
not get to the size it is by efficiency but by massive govt subsidies. Hope
this is of some help.
B.r., David
----- Original Message -----
From: ronald miller sr <[EMAIL PROTECTED]>
To: <biofuel@yahoogroups.com>
Sent: Saturday, May 19, 2001 3:36 PM
Subject: Re: [biofuel] ethanol for older motors
> Keith,
> What do you know about molecular seives? I read an article on the net
about
> a company who uses the seive to filter all the water out of ethanol after
> distillation making it pure 100%
> ----- Original Message -----
> From: Keith Addison <[EMAIL PROTECTED]>
> To: <biofuel@yahoogroups.com>
> Sent: Thursday, May 17, 2001 11:32 PM
> Subject: RE: [biofuel] ethanol for older motors
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