Improved fat-splitting process

C - Chemistry – Metallurgy – 12 – P

Patent

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Details

C12P 7/64 (2006.01) C12P 7/20 (2006.01) C12S 3/18 (2006.01)

Patent

CA 2220448

Carboxylic acids and glycerine are made by a continuous splitting process which involves the formation of a presplitting mixture by separately adding the glyceride, and effective lipase in an amount sufficient to produce partial splitting of the glyceride, and water. The water used in the formation of the presplitting mixture is water that has been separated from the glycerine-water effluent stream from the pressure splitter and recycled. The next step involves the pressure splitting which entails mixing the partially split glyceride from the presplitter with water and heating under conditions of temperature and pressure effective to substantially complete the splitting of the glyceride into component fatty acids and a glycerine-water stream. The water is then separated from the glycerine-water stream and the water is recycled to the presplitter.

La présente invention concerne un procédé selon lequel des acides carboxyliques et de la glycérine sont produits par un processus continu de fractionnement qui comprend la préparation d'un mélange de fractionnement préalable, obtenu par l'addition séparée de la glycéride, d'une lipase efficace en quantité suffisante pour provoquer un fractionnement partiel de la glycéride, et d'eau. L'eau utilisée dans la préparation du mélange de fractionnement préalable a été séparée du mélange de glycérine et d'eau s'écoulant du fractionneur sous pression, et recyclée. L'étape suivante comprend le fractionnement sous pression, qui comporte le mélange, à de l'eau, de la glycéride partiellement fractionnée provenant du préfractionneur, et le chauffage dans des conditions de température et de pression convenables pour achever sensiblement le fractionnement de la glycéride en acides gras la constituant et en un écoulement de glycérine et d'eau. L'eau est ensuite séparée de cette glycérine et recyclée par renvoi au préfractionneur.

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