If using the Acid process you will generate some water. Also remember the oil is dry but there are trace amounts of water in the best grease but I dont think this causes a problem. JIM
Jonathan Schearer wrote: > I am probably missing something, but where would the water be coming > from in the first place? Isn't the waste oil you start with not > supposed to contain any water, and if it does, you need to boil it > off? Then there's the methanol. It should not contain any water > either. I don't believe the catalyst would contain any water either. > It is the waste glycerin layer that contains most of the methanol, > correct? I have been told that the only stupid question is the one > that isn't asked. So I'm asking...where is the water coming from? > > */Michael Gian <[EMAIL PROTECTED]>/* wrote: > > > In additon, a fractionating column requires a reflux, the partial > return and > recycling of distillate product from the condenser back down the > fractionating > column which increases the energy tax (energy costs) of purifying the > methanol. > > This is true for tray towers. A more elegant setup is a packed > fractionating column, aka reflux column. Years ago we made one > packed with > small glass beads for jewelry, picked up cheap at a garage sale. > Ethanol > production, in this case not intended to fuel machinery. What > works for > ethanol will work for methanol, probably better, given no water > azeotrope. > > Alcohol Fuel Manual Ch11 has the poop. > > Michael Gian > > Mike McGinness > > bob allen wrote: > > > without getting into excessive detail, the boiling point of a > mixture is > > the weighted average of the stuff present. At first you have pure > > methanol coming off. as the temperature rose, increasing amounts of > > water contaminated the alcohol. > > > > You need a fractionating column to obtain pure methanol. > > > > Joe Street wrote: > > > 3A sieves will work but are normally used for getting tiny > amounts of > > > water out of solvents to bring them into the low ppm range. > They will > > > work of course but you might saturate them and have to do a second > > > stage. There is a significant energy input into regenerating > the seives > > > as well. You have to bake them at well over 100 degrees C more > like > > > 200, but you can get by with lower temps if you bake them out with > > > vacuum. Try putting a thermometer in your condenser and > monitor vapour > > > temperature to get a better endpoint and you will have an > easier time. > > > You have answered some of my own questions. I have recovered some > > > methanol but not tried to use it yet. Sounds like if straight > > > distillation is carefully done the methanol is dry enough to > use without > > > further drying. Great news and thanks for the post! :) > > > > > > I have some excellent references on solvent drying I can mail > you if you > > > want. No soft copy sorry but I might be able to scan them. > > > > > > Joe > > > > > > Thomas Kelly wrote: > > >> Good day to all, > > >> After splitting the glycerine coproduct from roughly 1200L of > > >> processed WVO, I distilled approximately 100L of the > > >> glycerine/methanol component. > > >> The first drops of methanol began to fall from the condenser at > > >> 145F. As the temp rose to 150F there was a steady flow of > clear liquid > > >> from the condenser. Throughout the day I turned the heat off > when the > > >> flow was steady and back on when it slowed. > > >> I filled a 4.5 gal (17.7L) cubie with clear liquid and started a > > >> second one. At this point the temp was over 160F. I let the > still run > > >> up to 200F. At this point the second cubie had 4 gallons of clear > > >> liquid (and it was now 1AM) giving a total of 8.5 gal. I was > thrilled > > >> with the result (and tired). I used the first 4.5 gal (17.7L) > to run > > >> one batch, and while that was settling ran a second batch > using the > > >> second 4 gal of recovered methanol. > > >> The first batch washed OK, but was a little slow to separate. It > > >> failed the methanol quality test. > > >> The second batch did not even pass the wash test. > > >> I have been making consistenly high quality BD for several > months ... > > >> thank you JtF and list members. I don't think I made mistakes in > > >> measurement or titration. > > >> My question: > > >> As my distillation temps rose towards 200F (93C) could I have > been > > >> including water in my distillate? (The methanol recovered at > lower > > >> temps performed better than the methanol recovered at higher > temps.) > > >> If so, can I use Zeolite "molecular sieves" in the future to > remove it? > > >> > > >> Thanks, > > >> Tom > > > >> > ------------------------------------------------------------------------ > > >> > > >> _______________________________________________ > > >> 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/ > > > > > > > -- > > Bob Allen > > http://ozarker.org/bob > > > > "Science is what we have learned about how to keep > > from fooling ourselves" - Richard Feynman > > > > _______________________________________________ > > 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/ > > > > _______________________________________________ > 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/ > > > Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great > rates starting at 1ยข/min. > <http://us.rd.yahoo.com/mail_us/taglines/postman7/*http://us.rd.yahoo.com/evt=39666/*http://messenger.yahoo.com> > > > >------------------------------------------------------------------------ > >_______________________________________________ >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/
