METHOD FOR PRODUCING A BIODIESEL FUEL HAVING A SPECIALLY DESIGNED REACTOR AND 'AUTOCATALYTICALLY' ACTIVE NANOSCALE STRUCTURED MATERIAL SURFACE OF THE REACTOR

摘要

The invention relates to a method for economical production of biodiesel specifically from free fatty acids, as are present in particular in used cooking oils, used cooking fats, different animal fats and biological fats or oils, wherein the raw material, in admixture with a monovalent alcohol, preferably methanol, is fed to a reactor that is specially constructed from "(auto)catalytically" active material having a nanoscale surface structure and is correspondingly designed, and is reacted at a defined temperature at relatively high pressures. The method is characterised in that the method is carried out without an external catalyst (liquid or solid) and the products diesel and glycerin occurring during the transesterification therefore accumulate substantially free from metallic impurities. The resulting products comply with the relevant quality standards.