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RE: [new_distillers] Methanol question...

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  • Zeke Jones
    I only use sugar washs and,theoretically,they produce no/very little Methanol.I do,however,toss the first 50ml on the first run (of 12.5L)and an additional
    Message 1 of 6 , Jul 29, 2002
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      I only use sugar washs and,theoretically,they produce no/very little
      Methanol.I do,however,toss the first 50ml on the first 'run' (of 12.5L)and
      an additional 100ml on the second(usually a run of the distillate from two
      12.5L runs combined)...after all,I AM drinking this stuff....:>)


      >From: "Ackland, Tony (CALNZAS)" <Tony.Ackland@...>
      >Reply-To: new_distillers@yahoogroups.com
      >To: <new_distillers@yahoogroups.com>
      >Subject: RE: [new_distillers] Methanol question...
      >Date: Mon, 29 Jul 2002 16:18:19 +1200
      >
      >John,
      >
      > > One question I do have though is that with this design, I have full
      >control over the reflux, and indeed can shut the output valve, open the
      >reflux and have total reflux. (Though i'de die of thirst waiting for the
      >results this way!!!) The question is though that i don't open the output
      >until temp in the column above the packing reaches 78deg, so this being the
      >case am I incorrect in assuming that there will be no 'heads' or methanol
      >in the product as it would have been 'refluxed' at the lower temperature???
      >
      >No. They MAY still be there. Some washes will produce less methanol and
      >acetone than others, and the pause in the high 60's may be very brief, but
      >its still there. The question is, if you don't take them out first, where
      >do you think they went ? ie "refluxing" wont remove them - there's no
      >chemical reaction taking place. The refluxing though will concentrate them
      >up, and you may have just a small (but very concentrated) amount of them.
      >Follow the guidelines regardless, and toss that first 50-100 mL. Its a
      >good habit to get into, and the loss of $ is minimal - you're only losing
      >about $0.20 of alcohol, so well worth the precaution.
      >
      >Tony




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