METHOD FOR THE PRODUCTION OF BIODIESEL FROM USED OILS AND USED FATS

摘要

The invention relates to a method for converting used oils and used fats of biogenic origin, comprising fatty acids, into biodiesel (fatty acid methyl ester). The aim of the invention is to create a method enabling the production of a biodiesel fuel from used oils and used fats of biogenic origin utilizing a few simple process steps. In particular, the free fatty acids present are to be transferred into fatty acid methyl ester. The aim is achieved in that the free fatty acids (2) present in the used oil/used fat mixture (1) are activated and thus can be converted into fatty acid methyl ester (6) by means of subsequent esterification with methanol (5). Various carboxylic acid chlorides (3) are utilized as the activating agents. The field of application of the invention is the production of fuel and raw material.