RE: [Distillers] refractionating run-off
- With reguards to the temp of the distilate, there was a theory that if the
distilate was coming off at a high tep, then this would allow some of the
higher volatiles to bleed off easier.????
From: Thomas Hart [mailto:thart@...]
Sent: Thursday, 7 June 2001 06:27
To: 'Distillers@yahoogroups.com'; New_Distillers (E-mail)
Subject: [Distillers] refractionating run-off
Good morning (or whatever time of day this finds you)
I have recently completed a revamp of my still and have added a Nixon/Stone
style unit. I posted my design earlier and it is now posted on "Tony's
Amazing Gift to Distillers Everywhere". I have run the system with water to
check it and clean it out. I have never used a refracting column before and
so I don't know what to expect. I was surprised how warm the distillate was
coming out the valve. I didn't take a temp., but it was definately hot. As
I have thought about the system it seems to make sense that this would be
the case, but someplace I read about the importance of getting cool run-off.
So, my question is in two parts. First, is the distillate from a refracting
column suppose to be hot? And second, does it make a difference to the
product quality if it is?
Thanks for your help in advance.
I am hoping to have a couple pictures to post soon. In addition to the new
refracting column, I also retained my original condenser. So now I have the
best of all worlds. Or at least a muddled compromise between them all!
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- Tom wrote:
>So, my question is in two parts. First, is the distillate from a refractingIt depends on your condenser setup, but for most designs, I would expect
>column suppose to be hot?
the product to be cooler than its condensation temperature. If it is
right at its boiling point, you run the risk of losing product as vapour.
The cooler the product, the less product is lost.
>And second, does it make a difference to the product quality if it is?I would expect it to have little impact. More volatile components will be
lost more readily, so your heads (and the first of your ethanol) will be
lower in methanol, and your tails (and the last of your ethanol) will have
more higher alcohols, but I don't expect this to be a significant effect.
Cooling your product further may be a good idea.