INTEGRATED METHOD OF PRODUCING BIOFUEL FROM DIFFERENT TYPES OF RAW MATERIAL AND RELATED PRODUCTS Russian patent published in 2014 - IPC C11C3/10 C10L1/02 C10L11/02 C10L1/19 C10L1/18 C11C3/00 C11B7/00 

FIELD: chemistry.

SUBSTANCE: method comprises the following basic operations. a) producing mixtures of fatty acid alkyl esters and glycerine by trans- esterification, starting from lipid-based vegetable or animal materials and from lower alcohols or bioalcohols in excess; b) separating the mixtures obtained from the said operation a) of trans-esterification into a phase based on raw glycerine and a phase containing said mixtures of fatty acid alkyl esters and the excess amount of lower alcohols or bioalcohols; the method being characterised by that said starting lipid-based vegetable or animal materials include one or more of the following ingredients: i) raw vegetable oil; ii) refined vegetable oil; iii) used edible oil and/or animal fats and by that said ingredients undergo the following preliminary treatment steps before said operation a) of transesterification: 1) said ingredient i), raw vegetable oil, is subjected to preliminary cleaning and refinement in order to remove impurities and to neutralise and fractionate the oil by cooling, and then drying the refined oil thus obtained; 2) said ingredient ii), refined vegetable oil, is subjected to preliminary drying; 3) said ingredient iii), used edible oil and/or animal fats, is subjected to a preliminary cleaning, drying and then esterification of the free fatty acids contained therein, by addition of lower alcohols or bioalcohols; the obtained product based on fatty acid alkyl esters is mixed in a proportion of not more than 20% with dried refined oil obtained from treatments 1) or 2) above. Said preliminary treatments are performed in corresponding three sections for preliminary treatment of material, said sections being used together or alternatively to each other. The invention also relates to a biofuel or biofuel mixture.

EFFECT: method is extremely flexible with respect to providing raw material and provides high flexibility with respect to applicability of the obtained product.

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