Joe Street wrote:
> Hi Jim; > > Ok I made up a graph by adding water one ml at a time to 90 ml of > pure methanol. This was done at 23 degrees C which is the current > temperature in my work area. The hydrometers are calibrated for 15 > degrees so this is more practical for my purposes. As far as Bob's > comment on what glycerin in the recovered methanol will do to the > specific gravity, I cannot guess but glycerin has a pretty high > boiling point and my recovered methanol looks water clear so there is > not much glycerin in there I think. I am going to assume it is > negligible. Primarily I am doing this just to determine roughly how > much zeolite I need to dry the methanol. I will err on the > conservative side with this. It looks like my recovered methanol has > less than 10 % water (worst case) so a litre of methanol should have > less than 100 grams of water in it. If zeolite can adsorb 10% of it's > weight in water then 1Kg of zeolite per litre of methanol should be > sufficient. Here is the chart. Since I typically recover less than 3 > litres of methanol at a time I'll look for a molecular seive which > holds at least 3 Kg of zeolite. BTW I know it was mentioned before > and is in the archives but for convenience the type of seives to use > for this is 3A. Best place for this is in the pipe upstream of the > condenser. I'll get a trap with a built in heater so I can use my > vacuum system to regenerate the seives. I'll then see how much water > comes out of the zeolite and collects in the trap. I'll be interested > to see if the numbers match up. So will I keep me posted Joe. Jim > > Cheers > Joe > Graph of methanol_water specific gravity. > > > JJJN wrote: > >>Does any one know of a good test to determine the amount of water in >>methanol? >> >>Joe were you working on something like this? >> >>Jim >> >>_______________________________________________ >>Biofuel mailing list >>Biofuel@sustainablelists.org <mailto:Biofuel@sustainablelists.org> >>http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org >> >>Biofuel at Journey to Forever: >>http://journeytoforever.org/biofuel.html >> >>Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): >>http://www.mail-archive.com/biofuel@sustainablelists.org/ >> >> >> >> >------------------------------------------------------------------------ > >_______________________________________________ >Biofuel mailing list >Biofuel@sustainablelists.org >http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > >Biofuel at Journey to Forever: >http://journeytoforever.org/biofuel.html > >Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): >http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
