Re: removing ethanol from wine

"dave e" <dgenglish@xxxxxxxxxxx> wrote in message
news:1134931952.732455.301430@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> N:dlzc D:aol T:com (dlzc) wrote:
>> Dear john:
>>
>> <john@xxxxxxxxxx> wrote in message
>> news:1134912495.288119.224550@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >I want to remove ethanol from wine by heating it.
>>
>> Won't work.
>>
>
> Hold on there! The boiling point of pure ethanol is 78.3. The boiling
> point of the azeotropic mixture is 78.15. The boiling point of water
> is 100 C. If you heat the wine to a temperature anywhere above the the
> boiling temperature of pure ethanol (which is also above the boiling
> temperature of the azeotropic mixture) then your liquid phase should be
> essentially free of any alcohol. It certainly won't have enough
> alcohol in it to get anyone drunk.
>
> Your vapor phase, at and around 78.15, is only 95% ethanol.
>


Hold on. You won't get the azeotrope unless you have a good fractionating
column and the whole system is in equilibrium. Just do a phase diagram to
check if you want. If he starts with, say, 15% alcohol, then the distillate
will be somewhat enriched in ethanol, maybe around 20%. Most spirits are
distilled many times to get the concentration up to 40% as they don't use
columns. Thus the answer to remove all the ethanol from wine means boiling
it until about 80% has been boiled off.

--
--
Ron Jones

Don't repeat history, see unreported near misses in chemical lab/plant at
http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm not
certain about the universe.
~ Albert Einstein
>


.

Relevant Pages

  • Re: removing ethanol from wine
    ... The objective is, as you say, to remove ethanol ... > from the wine so that the wine is non-alcoholic (collection of ethanol ... > long and at what temperature would be necessary to remove all or most ... if you turn the stove up too high, and don't allow time for the alcohol ...
    (sci.chem)
  • Re: Continental vs British toilets
    ... why is it said that a glass of red wine a day can be good ... so it's likely not the alcohol itself. ... 'harmless' dose outside of stuff like yeast dough. ... gives me a 'threshold' dose of 5-10g ethanol. ...
    (rec.arts.sf.composition)
  • Re: removing ethanol from wine
    ... >I want to remove ethanol from wine by heating it. ... The most simple fashion is just to heat the wine in an open pot and when the ... wine begins to simmer light the alcohol fumes at the top of the pot. ...
    (sci.chem)
  • Re: removing ethanol from wine
    ... The boiling point of pure ethanol is 78.3. ... If you heat the wine to a temperature anywhere above the the ...
    (sci.chem)
  • Re: Alternative to glow fuel
    ... They do make alot of wine though. ... >> suppose I could distill alcohol, if it's the same as methanol...? ... > The type of alcohol in wine and liquor is ethanol. ... But does ethanol work the same as methanol in glow engines??? ...
    (rec.models.rc.air)
Loading