Preparing fatty acid methyl ester, useful as biodiesel, comprises transferring unavoidable small batch of remains from fryers to polyethylene container through a filter and reducing the acid number of the batch by its alkality

摘要

Preparation of fatty acid methyl ester from used fats comprises transferring unavoidable small batches of remains from fryers to a polyethylene container (1 m3>) through a special filter, which retains coarse particles and water and reducing the acid number of the batch through its alkality and keeping it constant.