Process for the preparation of biodiesel

Details Process for the preparation of biodiesel Process for the preparation of biodiesel

C - Chemistry, Metallurgy

10

G

C10G 3/00 (2006.01) C10L 1/02 (2006.01) C11C 1/02 (2006.01) C11C 3/04 (2006.01)

Patent

CA 2634819

The present invention relates to a process of preparing fatty alkyl esters (biodiesel), glycerin and lithium soap comprising: a) transesterifying an oil, fat or grease with a solution of lithium base in a monohydric aliphatic alcohol to produce fatty alkyl esters and a lithium alkaline glycerin; b) separating the fatty alkyl esters and the lithium alkaline glycerin and utilizing the lithium alkaline glycerin to saponify fatty alkyl compounds to produce glycerin and lithium soap; and c) optionally, separating the glycerin and lithium soaps.

La présente invention concerne un procédé de fabrication d'esters d'alkyl gras (biodiesel), de glycérine et de savon de lithium, consistant a) à transestérifier une huile ou une graisse avec une solution de base de lithium dans un alcool aliphatique monohydrique afin de produire des esters d'alkyl gras et une glycérine alcaline de lithium ; b) à séparer les esters d'alkyl gras et la glycérine alcaline de lithium et à employer la glycérine alcaline de lithium afin de saponifier des composés d'alkyl gras de manière à produire de la glycérine et du savon de lithium ; et c) à séparer éventuellement la glycérine et les savons de lithium.

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