Treat anything clear as Methanol. My first attempt making biod, just sucking in Meth and at a temp of 55oC I found at least 250ml of Meth in my liquid trap. Be very careful. Ian ----- Original Message ----- From: Keith Addison <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Friday, May 25, 2001 7:59 AM Subject: [biofuel] Re: Reclaiming the methanol
> >I've used and re-used about thirty gallons of methanol so far using > >my hot pink vacuum still. At first I was worried about recovering > >water at the end of a run, so watched the condensate closely for any > >sign of cloudiness. I've never seen any. I don't think water can be > >recovered from the byproduct at anywhere near the boiling point of > >methanol. > > > >Dale > > > >--- In [EMAIL PROTECTED], Keith Addison <[EMAIL PROTECTED]> wrote: > > > >Keith Addison asks: > > > > > > > > >A biodiesel question. If you boil off and distill the excess > >methanol > > > > >from the glycerine for re-use, is it in fact suitable for re-use? > ><snip> > > Hi Dale > > Thanks, good info. > > >I don't think water can be > >recovered from the byproduct at anywhere near the boiling point of > >methanol. > > Now let's see if I can get this right. If it's a mixture of methanol > and water that's being boiled, the boiling point of the mixture will > be somewhere between the two boiling points, depending on the > proportion of the mix. Of course vapours come off before boiling > point is reached, but the methanol component won't boil off at the > boiling point of pure methanol (64.7 deg C), while the water > component remains unboiled until the temperature reaches 100 deg C. > If you evaporate a liquid mixture, the vapour has a higher proportion > of the more volatile components than the liquid it evaporated from. > Alcohol is more volatile than water (it takes less energy to vaporise > alcohol than to vaporise water). So when you boil a mix of the two, > the vapour contains more alcohol - not because the alcohol component > of the mix is boiling first, but because the alcohol is more > volatile. So the proportion of alcohol in the boiling liquid steadily > goes down, and the boiling point of the mixture steadily goes up. In > a 50-50 mix the boiling point will start off being halfway between > the boiling points of the two components - more alcohol lowers the > boiling point, more water raises it. If you boil a mix of methanol > and water, you'll get vapours of both. > > (How did I do, O Silent One?) > > If I screwed up, Dale, I'll no doubt be hearing about it and will > post a correction. > > Thanks again. > > Keith Addison > Journey to Forever > Handmade Projects > Tokyo > http://journeytoforever.org/ > > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > Please do NOT send "unsubscribe" messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
