Biodiesel production from soapstock

Details Biodiesel production from soapstock Biodiesel production from soapstock

C - Chemistry, Metallurgy

12

P

C12P 7/62 (2006.01) C11B 13/00 (2006.01) C11B 13/02 (2006.01) C12P 7/64 (2006.01)

Patent

CA 2586889

The invention relates to a process for production of fatty acid es~ters directly from any soapstock generated in the alkali refining processes which contains 10-60% water, 0,1-2,0% of sterols, 35-85% of fatty derivatives including partial glycerides, by * neutralizing and splitting the soaps with strong acids until reaching pH 2-8 * followed by enzymatic esterification using Lipase with concentra~tion ranging from 100 ppm - 10% by weight, using C1 to C6 alkanol in a weight ratio of 5-100% in relation to the fatty components working at tem~perature from 15-70~C via batch or continuous processes . The invention also relates to the use of fatty acid esters produced according to the invention as biodiesel.

L'invention concerne un processus de production d'esters d'acides gras directement à partir de n'importe quel soapstock généré dans des processus de raffinement d'alcalis, qui contient de 10 à 60 % d'eau, de 0,1 à 2,0 % de stérols, de 35 à 85 % de dérivés gras comprenant des glycérides partiels, par ce qui suit: - la neutralisation et le fractionnement des savons par des acides forts jusqu'à un pH de 2-8; - l'estérification enzymatique utilisation la lipase avec une concentration allant de 100 ppm à 10 % en poids, qui utilise un alcanol C1 à C6 avec un rapport de poids de 5 à 100 % en rapport aux composants gras, réalisée à une température de 15 à 70 °C au moyen de processus par lots ou continus. L'invention concerne également l'utilisation en tant que biodiesel d'esters d'acides gras produits selon l'invention.

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