Yes. HTP is required to obtain high esterification conversion on such material. I would suggest that you seek out your nearest college's chemistry department head and/or chemical engineering department to determine exactly what ballpark you will be in relative to pressure and temp. They may also be willing to assist you with the sampling
85% FFA feedstock is not derived from your run of the mill fish and chips outlet. It sounds more as if it's soap stock that has been removed during oil processing. Todd Swearingen ----- Original Message ----- From: movember <[EMAIL PROTECTED]> To: <biofuels-biz@yahoogroups.com> Sent: Monday, August 19, 2002 9:03 PM Subject: [biofuels-biz] Re: hi ffa feed stocks > I am able to source large quantities of the high ffa feedstock (FFA > 85%), however initial miniature tests (1 litre batches using Aleks' > two stage Acid/Base method) have proved unsuccessful. > > Would the same process, under high Temperature/Pressure, be > sufficient to convert feedstocks of this type? If this may be the > case, then what mini-batch experiments could be done to test the > feedstock? > > Much apreciated. > > > --- In [EMAIL PROTECTED], "Appal Energy" <[EMAIL PROTECTED]> wrote: > > It's a bit difficult to say that acid/base catalysis "falls > > down," whether it be the ambient procedure as presented by Aleks > > Kac or a HTP industrial procedure. > > > > Most of what industry achieves under high pressure and > > temperature can be achieved at STP by conducting the reaction > > over prolonged periods, at moderate temperature and in several > > stages when necessary. > > > > To date we have experienced repeated success with STP > > esterification, simply by prolonging the esterification period to > > 36-48 hours, generating a complete transesterification reaction > > on 3.5% FFA feedstock with but 1.5 grams of KOH per liter of oil > > over a 36 hour period. > > > > Whether a repeat cycle is used on the esterification side or not, > > it is necessary to separate the feedstock from any layers that > > formed during the esterification prior to conducting the repeat > > cycle or the base stage. > > > > Todd Swearingen > > > > ----- Original Message ----- > > From: goat industries <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Monday, August 19, 2002 4:19 PM > > Subject: [biofuels-biz] hi ffa feed stocks > > > > > > > Check out work done by Canakci and Van Gerpen. I'm trying out > > their ideas, > > > but finding it difficult to get good results. Also, an acid > > value of 1mg > > > KOH/g = 0.5 % FFA. They identiified water formation in the acid > > stage as the > > > inhibiting part of the reaction, which is where Alek's > > 'foolproof' method > > > falls down (apparently). > > > > > > > > > ------------------------ Yahoo! Groups > > Sponsor ---------------------~--> > > > 4 DVDs Free +s&p Join Now > > > http://us.click.yahoo.com/pt6YBB/NXiEAA/Ey.GAA/9bTolB/TM > > > --------------------------------------------------------------- > > ------~-> > > > > > > Biofuels at Journey to Forever > > > http://journeytoforever.org/biofuel.html > > > Biofuel at WebConX > > > http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm > > > List messages are archived at the Info-Archive at NNYTech: > > > http://archive.nnytech.net/ > > > To unsubscribe from this group, send an email to: > > > [EMAIL PROTECTED] > > > > > > > > > > > > Your use of Yahoo! Groups is subject to > > http://docs.yahoo.com/info/terms/ > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> > 4 DVDs Free +s&p Join Now > http://us.click.yahoo.com/pt6YBB/NXiEAA/Ey.GAA/9bTolB/TM > --------------------------------------------------------------- ------~-> > > Biofuels at Journey to Forever > http://journeytoforever.org/biofuel.html > Biofuel at WebConX > http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm > List messages are archived at the Info-Archive at NNYTech: > http://archive.nnytech.net/ > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/Ey.GAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
