Re: [Biofuel] methanol recovery from fuel stock?

2005-11-07 Thread Keith Addison 

Thankyou Ken, succinctly put, as ever.

Best

Keith


On Nov 4, 2005, at 10:11 PM, Ken Dunn wrote:
 
 
  I'm still a bit confused.
 
  What is the trick to evaporating the methanol
  without reversing the process?


Very simple -- you can't boil off methanol when both
biodiesel and glycerine are present without shifting
the equilibrium backwards to some extent.

You can recover methanol out of a mixture of
methanol with biodiesel, or out of a mixture of
methanol with glycerine, but NOT out of a mixture
of all three.

-K


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Re: [Biofuel] methanol recovery from fuel stock?

2005-11-05 Thread Buck Williams 

what the boilling point of diesel is but itw way below the boiling point of 
water at 212,, buck


From: JJJN [EMAIL PROTECTED]
Reply-To: Biofuel@sustainablelists.org
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] methanol recovery from fuel stock?
Date: Fri, 04 Nov 2005 19:31:32 -0800

Hi Derick,

I too am curios about this, but isnt 275 deg F on the edge of the
envelope Bio? I would like to try this as well but instead use a vacume
to keep the temp down. how much ethanol did you recover? That alone may
make it worth while.

Jim

Derick Giorchino wrote:

  I have pondering this for some time but figured I should get some
  success with making fuel first.
 
  Since alcohol is added from time to time to storage tanks so it will
  mix with the water and thus the blended alcohol water mixes with the
  fuel.
 
  This being the said, I wondered if the wash could be shortened or less
  of a waste problem by distilling the methanol out of the finished
  product before washing.
 
  I have just finished a 120 liter batch I pulled off 1 liter of fuel
  stock ¸ I put in a old pressure cooker with the steam vent replaced
  with a hose barb and connected it to my evaporator. Turned the flame
  on and heated to 275 deg F for 10 minutes or so. Let it cool a bit and
  pored it into a pet bottle added the wash water shook it hard it
  separated in just a few minutes. The other half was just put in a pet
  bottle and wash water was added and shook it hard although it is
  separating not even close to the same speed as the demethanoled batch.
 
  Is there any problem with this process? I wouldnât ask but I canât
  find anything in the archives.
 
  Thanks Derick
 
 
 
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