Process for the continuous production of lower alkyl esters of h

Details Process for the continuous production of lower alkyl esters of h Process for the continuous production of lower alkyl esters of h

1993-03-26

1994-10-11

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

554168, 554161, C07C 5100

Patent

active

053548787

ABSTRACT:
Production of lower alkyl esters of higher fatty acids from an oil phase and lower alcohols by catalytic transesterification at reaction temperatures of up to 100.degree. C. in the presence of an alkaline catalyst, includes a) introducing a mixture of oil phase, alcohol and catalyst at reaction temperature into the top of a first reactor column, at a rate of flow which is lower than the sinking rate of the glycerine separated from the reaction mixture, b) the reaction mixture is passed into a second reactor for further transesterification, c) the thus obtained reaction mixture is further freed of glycerine in an initial separating stage by means of a short-term washing, d) the reaction mixture is passed into a third reactor with addition of further alcohol and catalyst, and at a rate of flow conforming to the first stage of the process, e) the reaction mixture is further transesterified, f) reaction product is freed of the remaining methanol, glycerine, soaps formed and catalyst in a second separating stage, under addition of an aqueous extraction buffer solution, and g) the reaction mixture is freed of lower alcohols by stripping, washed with suitable extraction and washing solutions and dried.

REFERENCES:
patent: 5116546 (1992-05-01), Klok et al.

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