Process for removing oil from raw lecithin

Details Process for removing oil from raw lecithin Process for removing oil from raw lecithin

C - Chemistry, Metallurgy

07

F

C07F 9/10 (2006.01) A23J 7/00 (2006.01) C11B 1/10 (2006.01)

Patent

CA 2139647

The present invention discloses a process for recovering lecithin from oil- and lecithin-containing mixtures by extraction with an extractant comprising at least one hydrocarbon; the process is characterized by conducting the extraction with one or more C3- or C4-hydrocarbons under conditions at which the extractant forms a solution of low viscosity with the lecithin and the extraction mixture divides into an oil-enriched liquid phase and a lecithin-enriched liquid phase, separating the two phases, and recovering through separation of the extractant substantially lecithin-free oil from the oil-enriched phase as well as substantially oil-free pure lecithin from the lecithin-enriched phase.

Un procédé permet de récupérer la lécithine contenue dans des mélanges d'huile et de lécithine par extraction au moyen d'un agent d'extraction contenant au moins un hydrocarbure. L'extraction au moyen d'un ou plusieurs hydrocarbures C3 ou C4 est effectuée dans des conditions menant à la formation d'une solution de faible viscosité par l'agent d'extraction avec la lécithine. Le mélange d'extraction se décompose ensuite en une phase liquide riche en huile et en une phase liquide riche en lécithine. On sépare les deux phases et on récupère une huile sensiblement dépourvue de lécithine par séparation de l'agent d'extraction contenu dans la phase riche en huile et une lécithine pure sensiblement dépourvue d'huile par séparation de l'agent d'extraction contenu dans la phase riche en lécithine.

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