Dear Michael, tks a lot for your help. So, we can use palm oil direct without transes.? WHich motor modifications do you usually do?
Do you know how to do the sme process with Ethanol? Or anyone who does it? regards, Marco --- In [EMAIL PROTECTED], Michael Allen <[EMAIL PROTECTED]> wrote: > Dear Marco, > > > > I have plent of Palm Oil. When you mentioned that > > you used Straight > > Palm Oil you hadn't transerterificate the oil? > > That is correct. The first stage of our program was to > demonstrate that oil-palm growers could run their farm > machinery on straight palm oil (SPO)by making simple > engine modifications. The overall aim of the program > is to stabilise oil prices for oil-palm growers. That > means that we are looking at all aspects of palm-oil > use. > > Incidentally, with respect to the high free fatty acid > feeds, the limit to the amount of FFA possible is > probably related to the formation of water in Alek's > first stage esterification using sulfuric acid as the > catalyst. Thus 5%FFA in the oil means that 4mls of > water are produced for every litre of oil. This water > increases soap formation in the second stage (which is > catalysed by sodium hydroxide). > > Alek Kak's method > (http://journeytoforever.org/biodiesel_aleksnew.html) > reduces this impact by using 95% pure sulfuric acid > which has a strong affinity for water. He also > recommends about 9 times the amount of methanol > theoretically needed to react with the FFA. This also > has the effect of reducing the water concentration. > > So, for high(er) FFA, more methanol and more sulfuric > acid should be beneficial. However, that means more > sodium hydroxide to neutralise the acid and some form > of methanol recovery system. We use a simple condenser > connected to the reactor to grab the methanol. We can > either recycle this to the next batch or operate the > reactor under total reflux. This makes it possible to > operate the reactor at a higher temperature and so > accelerate the rate of the separate reactions. > > Hope this gives you some useful ideas > > Regards > > Michael Allen > > > > --- In [EMAIL PROTECTED], Michael Allen > > <[EMAIL PROTECTED]> wrote: > > > Dear David, > > > > > > We did extensive work last year on heated Straight > > > Palm Oil (SPO) in two-wheeled tractors and fishing > > > boat motors. We had field trials by local farmers > > of > > > four commercial tractors and did test-bed work > > with > > > three others. Crude palm oil caused erosion of the > > > pistons by late ignition but refined palm-oil (of > > the > > > grade used for cooking oil) worked well. But we > > never > > > got around to using it in a locomotive. > > > > > > This year we have been trying a range of reactor > > > designs to optimise methyl ester production from > > > refined oil. We are now moving back through > > various > > > forms of oil "refinement" towards the crude palm > > oil > > > (CPO). And yes, we are currently using the Aleks > > Kak > > > two-stage process. And yes it is currently at > > > atmospheric pressure (although the reactor was > > > designed to handle 200 kPa mainly as a safety > > feature. > > > Even so, some enthusiastic welders have > > > "overpressurised" it twice now through forgetting > > to > > > flood (and then drain) it with water before > > modifying > > > the unit). > > > > > > The locomotive I mentioned is running on a B50 > > blend: > > > It uses esters from a one stage > > trans-esterification > > > reaction of methanol with the stearin and palmitin > > > which has separated from the CPO. This waxy stuff > > is > > > probably quite comparable with the good Scottish > > lard. > > > > > > Lots of luck! > > > > > > Michael Allen > > > > > > --- Keith Addison <[EMAIL PROTECTED]> wrote: > > > > >Thanks for your response, prof. Allen. I'll > > > > formulate an inquiry to > > > > >Mohammed Farid as you suggest. You mentioned > > Thai > > > > railway application. I > > > > >saw somewhere that German railways are using > > SVO in > > > > some of their shunting > > > > >engines. > > > > > > > > > > > > > > http://www.wired.com/news/technology/0,1282,53591,00.html > > > > Choo-Choo Trains on Energy Crunch > > > > > > > > >The encouraging part of your message is you are > > > > reacting at 60C and that > > > > >this is near methanol boiling point. That > > implies > > > > you are succeeding at > > > > >atmospheric pressure. Do you use conc. > > sulphuric > > > > acid first stage? I agree > > > > >meth recovery is so simple that using excess is > > not > > > > really a problem. > > > > > > > > > >David T. > > > > > > > > > > > > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Yahoo! Finance - Get real-time stock quotes > > > http://finance.yahoo.com > > > > > > > __________________________________________________ > Do You Yahoo!? > Yahoo! Finance - Get real-time stock quotes > http://finance.yahoo.com ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/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/
