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homebrew distilling question is this safe-see picture. Answered

Hi, I saw instructions about homebrewing in a book i downloaded and have now lost. The picture shows the essence of it. Is this safe? would it actually concentrate the alcohol? the idea is to keep topping up the mash with sugar and water, using high alcohol tolerance yeast.
would distilling the product of this make a safe product?
thanks.

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 Also, keep the upper condenser cool--if it heats up to 30° C it won't distill anything.  If you can chill it with ice, so much the better.

Stirring the mixture is a good idea.

I can't find data on the vapor composition of an ethyl alcohol-water mixture at 30 C--if you can find it, that will tell you what the % alcohol will be in the condensate.  

I think it will be very slow, but it is easy to try.  If you could pull a vacuum on it, you could quickly distill off nearly pure alcohol without killing the yeast.

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djsc

8 years ago

thank you both gentlemen. the vapour composition thing is very interesting, the nuffields book of data perhaps?

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djscdjsc

Answer 8 years ago

I think this might be useful:

http://www.chemguide.co.uk/physical/phaseeqia/nonideal.html

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djsc

8 years ago

I am thinking of this as a first step using high alcohol yeast, to keep the fermentation going by extracting alcohol at the same time as producing it, get more out of a batch of yeast. I will certainly cool the top.

I read somewhere that the first thing you distill is methanol? which is poisonous I believe.  Is there anyway to test for methanol?

I wouldn't mind trying this but am against poisioning myself just to try moonshine.

I guess it will be safe, but not so efficient, unless you cool the top lid.

Since some of the evaporative will be water, I'd suggest stainless steel for your construct, but yes, it will work...Not the most efficient method but functional.