If you have that much tri-glycerides you may most likely do one acid esterification followed by one base trans-esterification. Just check the FFA value after the first step after removal of the (acidic) water phase. If the FFA value is < 5%, go as described above, in any other case as described before. With best regards AGERATEC AB Jan Warnqvist ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <biofuel@sustainablelists.org> Sent: Wednesday, January 24, 2007 10:02 AM Subject: Re: [Biofuel] Crude fatty acid distillate
> Thanks again Jan. > > Its 71.8% FFA. But doing acid esterification twice? Do you finish with a > base transesterification after the two acid esterification? > Please pardon my ignorance. Can you expound a bit. First time to hear > about acid esterification twice. Appreciate very much your help on the > matter. > > Thanks. > > Ken > > ----- Original Message ----- > From: "Jan Warnqvist" <[EMAIL PROTECTED]> > To: <biofuel@sustainablelists.org> > Sent: Tuesday, January 23, 2007 4:46 PM > Subject: Re: [Biofuel] Crude fatty acid distillate > > >> No, if you are working with 100% free fatty acids, you will have to do >> the >> ACID esterification twice with water content evapoation inbetween >> >> With best regards >> AGERATEC AB >> Jan Warnqvist. >> ----- Original Message ----- >> From: <[EMAIL PROTECTED]> >> To: <biofuel@sustainablelists.org> >> Sent: Tuesday, January 23, 2007 9:22 AM >> Subject: Re: [Biofuel] Crude fatty acid distillate >> >> >> > Thanks Jan, >> > >> > So you are saying that Aleks Kac's two stage process is the way to go >> > on >> > this one? Start with the acid-based stage and finish with the > base-based >> > stage. That's doing it twice right? >> > >> > Am doing small batches on the single stage base process (about 100 > liters >> > veg. oil). Will blending this with new veg. oil make a difference? >> > >> > Been reading the Foolproof Method over and over again to familiarize >> > myself. >> > Looks like it. >> > >> > Much thanks again. >> > >> > Ken >> > >> > ----- Original Message ----- >> > From: "Jan Warnqvist" <[EMAIL PROTECTED]> >> > To: <biofuel@sustainablelists.org> >> > Sent: Tuesday, January 23, 2007 3:35 PM >> > Subject: Re: [Biofuel] Crude fatty acid distillate >> > >> > >> >> Hello Ken, >> >> fatty acids are possible to esterify with an acid catalyst. The formed >> > water >> >> has to be drawn off, so it is always nice to start with a low water >> > content. >> >> Performed correctly, the esterification will produce 90-95% esters. >> > Usually >> >> these kinds of reactions are performed twice for a good conversion > grade. >> >> >> >> With best regards >> >> AGERATEC AB >> >> Jan Warnqvist >> >> ----- Original Message ----- >> >> From: <[EMAIL PROTECTED]> >> >> To: <biofuel@sustainablelists.org> >> >> Sent: Tuesday, January 23, 2007 8:18 AM >> >> Subject: Re: [Biofuel] Crude fatty acid distillate >> >> >> >> >> >> > Hi everyone, >> >> > >> >> > I sent this out a few days ago. I was told by someone in the oil > mill >> >> > that >> >> > crude fatty acid distillate is just a fancy name for their seconds >> >> > or >> >> > reject >> >> > oils, which soap factories take from them and make into soap. >> >> > Anyone >> > has >> >> > any experience with this kind of stock being made into biodiesel? > Will >> >> > such >> >> > a high FFA content give problems? >> >> > >> >> > Thanks. >> >> > >> >> > Ken >> >> > >> >> > >> >> > ----- Original Message ----- >> >> > From: <[EMAIL PROTECTED]> >> >> > To: <Biofuel@sustainablelists.org> >> >> > Sent: Thursday, January 18, 2007 10:15 AM >> >> > Subject: [Biofuel] Crude fatty acid distillate >> >> > >> >> > >> >> >> Hi everyone, >> >> >> >> >> >> An oil mill has just told me that they have excess of crude fatty > acid >> >> >> distillate which they can give me with the following specifications > : >> >> >> >> >> >> Free Fatty Acid (As Lauric) - 71.8% >> >> >> Iodine Value mg I/g - 10 >> >> >> Total Fatty Matter - 96% >> >> >> Moisture & Impurities - 0.5% >> >> >> Saponifiable Value mg KOH/g - 260 >> >> >> Unsaponifiable Matter - 0.32% >> >> >> >> >> >> I am now doing some small production for my own use with a blend of >> >> >> WVO >> >> > and >> >> >> new oil on the single stage process. I've read up on the two stage >> >> > process >> >> >> and it looks like the above will take a two stage process with >> >> >> 71.8% >> > FFA. >> >> >> Am I right? Anyone out there with some thoughts on the matter? >> >> >> Its >> > free >> >> >> stuff for me although its only about 200liters monthly. Would it >> >> >> be >> >> > better >> >> >> to blend it or process it separately? >> >> >> >> >> >> Thanks >> >> >> >> >> >> Ken >> >> >> >> >> >> >> >> >> _______________________________________________ >> >> >> 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/ >> > >> > >> > _______________________________________________ >> > 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/ > > > _______________________________________________ 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/
