Verfahren zur Herstellung von Estern

Ester production, especially butyl acetate in good purity


Production of an ester (I) from alcohol (II) and carboxylic acid (III) involves (a) passing a mixture containing (II) and/or (III) into a distillation column with separate zones for reactive inserts (A) below, and conventional inserts (B) above, the inlet; (b) reacting (II) with (III) on the reactive inserts in the presence of a catalyst; (c) separating the reaction mixture into higher-boiling (I) in the reboiler and lower-boiling azeotrope of (II), water and (I) at the top; and (d) phase separation of the azeotrope into an organic phase, which is recycled, and an aqueous phase. Specifically, (i) a heterogeneous catalyst is used in stage (b); and (ii) (I) is discharged as pure product above the reboiler inlet and between other conventional inserts (C), which are different from inserts (B). Also claimed is the plant used in the process.




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Cited By (10)

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    EP-1078932-A3May 23, 2001Basf AktiengesellschaftProcess for the preparation of 2-keto-2-gulonic acid esters
    EP-1300387-A1April 09, 2003Haltermann GmbHProcédé de préparation d'esters d'acides hydroxy carboxyliques
    EP-1424115-A1June 02, 2004Sulzer Chemtech AGProcess for the esterification of a fatty acid
    EP-1690849-A1August 16, 2006Sulzer Chemtech AGVerfahren zur Herstellung von Carbonsäureester mittels einer Reaktidestillation
    US-6573400-B1June 03, 2003Basf AktiengesellschaftPreparation of 2-keto-L-gulonic esters
    US-7091375-B2August 15, 2006Basf AktiengesellschaftMethod for the production of 2=-keto-l-gulonic acid C4C10 alkyl esters
    US-7329774-B2February 12, 2008Sulzer Chemtech AgMethod and plant for the manufacture of carboxylic acid ester by means of a reactive distillation
    US-8410306-B2April 02, 2013Basf SeMethod of producing a carboxylic alkyl ester
    WO-03031386-A1April 17, 2003Haltermann GmbhVerfahren zum herstellen von estern einer hydroxysäure