Dear Richard I think if you want to make a fuel you will have to avoid saponification and I had not given it any thought, but if you add the lye directly to the oil it will turn some of it into soap immediately so they must have a method of keeping it pretty thin to avoid that.
I don't think soap burns, certainly not easily. Too much water in it. I know that heating veg oil an simply keeping it hot for a while causes a shortening of the chains. I think that is the poor man's treatment. Used cooking oil has a much lower viscosity than fresh oil, especially compared with cold pressed oil. There is no reason it could not be used as a stove fuel after 'desiccation by heat'. Regards Crispin Thanks for that Crispin, Re used veggie oil for the slow running single lung 5 to 8hp diesels, you are right on: In thinking abit about it, indeed soap is otherwise made from lye/ caustic soda/ and tallow. Wonder how it would do in the faster running diesels eh ? Will revert from Lushoto (TZ) next week. Richard _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
