>Methanol shouldn't vaporize until 148.46 deg F assuming the atmospheric >pressure in you area is 760mmHg.
That's the boiling point of methanol. It starts to evaporate at much lower temperatures than that. Temperature maintenance is one of the reasons we recommend a mini-processor rather than a blender: "You can use a spare blender, or, better, make a simple Test-batch mini-processor." http://journeytoforever.org/biodiesel_processor7.html Another reason is that processing in a blender doesn't scale up well to a full-sized processor, blenders are too fast. Scaling up: http://journeytoforever.org/biodiesel_processor.html#scale Best Keith >Best, >Chris > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf >> Of Steve Moran >> Sent: Monday, April 28, 2008 4:46 PM >> To: sustainablelorgbiofuel@sustainablelists.org; >> sustainablelorgbiofuel@sustainablelists.org >> Subject: Re: [Biofuel] biodiesel test batch question >> >> I think (but I'm not sure) that methanol will evaporate at 140, is that >> correct? If it is, then keeping the temp below that would become very >> important too. >> >> ________________________________ >> >> From: [EMAIL PROTECTED] on behalf of >> Thomas Kelly >> Sent: Mon 4/28/2008 6:39 PM >> To: sustainablelorgbiofuel@sustainablelists.org >> Subject: Re: [Biofuel] biodiesel test batch question >> >> >> >> Mike, >> Test batches can be difficult ...... well worth the effort. >> Blenders provide excellent agitation, but it is difficult to >> maintain >> the proper temp. >> PET bottles allow one to maintain temp better, but agitation may >> be >> inadequate. >> >> It is important to maintain temp even if you must interupt >> agitation. >> Suggestion: Achieve the temp of 130F, blend for 5 minutes, check temp >> If necessary, carefully return the liquid to a >> container >> to be heated. >> Return to blender and repeat 2 (3?) more times >> >> I use a hot water bath for heating the mix. Do you have a pot big >> enough to fit the blender pitcher into? The pot would contain hot >> (~150F) >> water. Instead of pouring the hot mix back and forth you could simply >> place >> the pitcher from the blender, with top on, into the hot water bath to >> re-establish the 130F, blot dry and buzz it again. >> >> I have returned to doing some test batches. I favor heating the >> mix in >> a PET bottle that has a wide mouth with a twist open/close top. Sport >> drink >> plastic bottles often have this feature. This allows me to limit >> methanol >> evaporation while heating the mix. I either twist the top to open while >> heating or I squeeze the bottle to decrease volume of air before >> closing and >> heating. The wide mouth and a funnel make it easy to add the liquid. I >> heat >> the mix in a hot water bath. >> >> Good Luck, >> Tom >> >> >> ----- Original Message ----- >> From: "mike" <[EMAIL PROTECTED]> >> To: <biofuel@sustainablelists.org> >> Sent: Monday, April 28, 2008 3:57 PM >> Subject: [Biofuel] biodiesel test batch question >> >> >> > Hello everyone, my first post >> > >> > i want to apologize if this has been answered, but I have searched >> the >> > archives and relevant sites without finding a clear answer. >> > >> > I've been reading the j2f howto for doing my first test batch with >> > unused veg oil and a blender. I see that I'm suppose to pre-heat the >> oil >> > before starting the process to 130 deg F, but everything else i read >> > says I need to maintain that temperature which isn't possible without >> > moving the oil back to another container that can be heated.... so I >> > guess basically i'm asking, is that temp (130) required for the >> reaction >> > or does it just aid in a faster reaction. >> > >> > Thanks >> > Mike >> > >> > > > > _______________________________________________ >> > Biofuel mailing list >> > Biofuel@sustainablelists.org >> > http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel >> > >> > Biofuel at Journey to Forever: >> > http://journeytoforever.org/biofuel.html >> > >> > Search the combined Biofuel and Biofuels-biz list archives (70,000 >> > messages): >> > http://www.mail-archive.com/biofuel@sustainablelists.org/ >> > >> >> >> >> _______________________________________________ >> Biofuel mailing list >> Biofuel@sustainablelists.org >> http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel >> >> Biofuel at Journey to Forever: >> http://journeytoforever.org/biofuel.html >> >> Search the combined Biofuel and Biofuels-biz list archives (70,000 >> messages): >> http://www.mail-archive.com/biofuel@sustainablelists.org/ >> >> >> >> _______________________________________________ >> Biofuel mailing list >> Biofuel@sustainablelists.org >> http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel >> >> Biofuel at Journey to Forever: >> http://journeytoforever.org/biofuel.html >> >> Search the combined Biofuel and Biofuels-biz list archives (70,000 >> messages): >> http://www.mail-archive.com/biofuel@sustainablelists.org/ > > >_______________________________________________ >Biofuel mailing list >Biofuel@sustainablelists.org >http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel > >Biofuel at Journey to Forever: >http://journeytoforever.org/biofuel.html > >Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): >http://www.mail-archive.com/biofuel@sustainablelists.org/ _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
