C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/03 (2006.01) C07C 63/24 (2006.01) C07C 69/52 (2006.01) C11C 3/04 (2006.01) C11C 3/10 (2006.01)
Patent
CA 2392723
The invention relates to a method for producing fatty acid alkyl esters by transesterification, especially catalytic transesterification, of a mixture of triglycerides and fatty acids. According to the inventive method, an ester phase containing fatty acid alkyl esters and a glycerol phase containing fatty acids is produced from a reaction mixture in which the transesterification is carried out. The two phases are separated from each other and the fatty acids from the glycerol phase are removed, thereby producing a fatty acid phase that contains fatty acids which are esterified with an alcohol. The inventive method is further characterized in that the fatty acid phase is mixed with an additional mixture of triglycerides and fatty acids and the fatty acids contained in the mixture so obtained are esterified with an alcohol, thereby obtaining an esterification mixture that contains triglycerides and fatty acid alkyl esters. Said esterification mixture is then transesterified with alcohol to give further fatty acid alkyl esters.
L'invention concerne un procédé de production d'esters alkyliques d'acides gras par transestérification, notamment catalytique, d'un mélange de triglycérides et d'acides gras. Ce procédé consiste à former, à partir d'un mélange réactionnel dans lequel s'effectue la transestérification, une phase ester contenant des esters alkyliques d'acides gras et une phase glycérine contenant des acides gras, à séparer les phases, à séparer les acides gras de la phase glycérine, ce qui donne lieu à la formation d'une phase acide gras contenant des acides gras qui sont estérifiés avec un alcool. Ce procédé est caractérisé en ce que la phase acide gras est mélangée à un autre mélange d'acides gras et de triglycérides. Les acides gras présents dans le mélange ainsi obtenu sont estérifiés avec un alcool, ce qui donne lieu à un mélange d'estérification contenant des triglycérides et des esters alkyliques d'acides gras. Ce mélange d'estérification est transestérifié avec un alcool pour former d'autres esters alkyliques d'acides gras.
Gossler Helmut
Hammer Wilhelm
Koncar Michael
Mittelbach Martin
Bdi Anlagenbau Gesellschaft Mbh
Bdi-Biodiesel International Ag
Koncar Michael
Mittelbach Martin
Sim & Mcburney
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