Biodiesel processes in the presence of free fatty acids and...

Details Biodiesel processes in the presence of free fatty acids and... Biodiesel processes in the presence of free fatty acids and...

C - Chemistry, Metallurgy

10

L

C10L 1/08 (2006.01) C07C 67/02 (2006.01) C07C 67/48 (2006.01)

Patent

CA 2663692

Glyceride-containing feed for a base catalyzed transesterification with lower alkanol to make biodiesel is pretreated with glycerin separated during the transesterification to partially convert glycerides with lower alkanol contained in the separated glycerin using base catalyst in the separated glycerin while reducing the free fatty acid and phosphorus compound concentrations in the glyceride-containing feed. Unique producer compositions are provided by the pretreatment processes.

Selon la présente invention, un apport, contenant de la glycéride destiné à une transestérification catalysée par des bases avec un alcanol inférieur en vue de produire un biocarburant, est prétraité avec une glycérine séparée lors de la transestérification afin de convertir partiellement les glycérides avec un alcanol inférieur contenu dans la glycérine séparée à l'aide d'un catalyseur de base dans la glycérine séparée tout en réduisant l'acide gras libre et les concentrations de composé phosphore dans l'apport contenant de la glycéride. Les procédés de prétraitement permettent d'obtenir des compositions uniques destinées à la production.

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