[biofuel] Re: vac distillation heat disposal

[motie_d]

--- In [EMAIL PROTECTED], mtushmoo [EMAIL PROTECTED] wrote:
 Remember, Boiling requires heat to make it happen, even if it is 
 occuring in a vacumn.  The vacumn making the ethanol boil will 
absorb 
 heat from the mix.  That's the process that air conditioners work 
 byor did you mean the heat in the condensor from the condensing 
 vapors?
  
I can get rid of the condensor heat without any problems. I can use 
my cold well water for cooling, and use the less cold water for the 
start of another batch, or water my lawn.
It's the heat that is left in the 'wash' water that will be a 
problem. If a 100 gallon batch of 14%Etahnol is distilled, and I get 
14 gallons of Etahnol out of it, I am still left with 86 gallons of 
boiling water to get rid of.
I would prefer to leave most of the water in the fermenter, and only 
remove the alcohol. Hopefully, the fermenter can keep working 
continuously. I can draw off the alcohol, and keep adding fermentable 
material. I don't need to draw off all the alcohol. I just need to 
remove enough to keep it below toxic levels for the yeast.
As a bonus, it should be much less labor-intensive.

Motie


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[biofuel] Re: vac distillation heat disposal

[motie_d]

--- In [EMAIL PROTECTED], Randall  Shelley Barron [EMAIL PROTECTED] 
wrote:
 Why not set up a waste heat exchanger.  That would allow you to
 recapture some of the heat needed for distillation to heat the next
 batch.
 
I've typed out several different replies to this message, and deleted 
them before posting, because they sound rude. It is NOT my intention 
to be rude, and I apologize in advance if it comes across that way.
I am trying to design a process that is simple. I do not care to heat 
all the excess amount of water, and cool it again, even if I have a 
use for the heat. I prefer to not heat it up to begin with. When it 
is heated, all the yeast will be killed, and I will be starting from 
the beginning again.
I prefer to have a continous running system, instead of several batch-
type systems.
I know it cannot be a true continuous system because of a probable 
build-up of toxins in the fermenter, unless I can figure out how to 
remove the toxins and dead yeasts. I've put some thought into that 
already, but am not ready to deal with it, until I have the mental 
bugs worked out of the vacuum  theory.
I got distracted a bit by the thought of a very long Lyne 
Arm/condenser combination, inspired by a post about a 'water-leg'. 
Think of a PotStill, with the fermenter being the Pot, and a very 
long Lyne Arm running to the bottom of a hill. With liquid in the 
Lyne Arm flowing by gravity, when a valve is opened to draw off some 
liquid, a vacuum would be created in the fermenter. Shutting off the 
valve at the bottom, would allow the vapor to condense, creating more 
vacuum.
Intriguing possibilities!

Motie


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