Post by
Beancooker »
https://forums.nicoclub.com/beancooker-u42602.html
Sat Dec 15, 2007 8:52 am
As far as the used fryer oil, it doesn't work that well, unless it is treated properly. It's called biodiesel. You take the fryer oil, add sulfur, and run it through a type of "distillery". Biodiesel has it's pro's and cons. It is cheaper, and doesn't pollute as much as regular diesel. Con's are that at temps less then 40ºF, it will start to gel. One other major problem is that it can grow bacteria. This is one of the biggest problems that we faced with it. (We switched our fleet of delivery vans in 2004 and ran it for a year) When the bacteria grows, the major problems you have are; foaming of fuel, mostly in fuel filter, which leads to foam lock. Just like vapor lock, but you get low volumes of fuel in the combustion chamber, since it's all foam. Second is the fouling of injectors. If you get bacteria growth, you will foul the injectors. It takes a few tanks, but then all of a sudden, you're down an injector. Then two... and at $400. an injector, it doesn't take many times of this happening, before you switch back to diesel. Also, biodiesel is more of a solvent than diesel. Any build up of any deposits in your fuel system, will be cleaned out. This sounds all well and good, but now all that crap that has been stuck where ever, is now being burned in the engine, and run through the injectors, since most of it will be dissolved and pushed through the fuel filter. We tried to stay with the biodiesel, to have a good outlook on the environment for our company, but it was far too costly. Hopefully in the future, the technology will get better, and these issues will be better.