Azeotropic distillation process

Details Azeotropic distillation process Azeotropic distillation process

C - Chemistry, Metallurgy

07

C

C07C 63/26 (2006.01) C07C 15/08 (2006.01) C07C 51/265 (2006.01) C07C 51/46 (2006.01) C07C 67/54 (2006.01) C07C 69/14 (2006.01)

Patent

CA 2247291

A purge stream derived from an azeotropic distillation column and containing an entrainer, a hydrocarbon, and an aliphatic acid (e.g. n-propyl acetate, a xylene and acetic acid respectively) is processed using a stripping column to effect separation of the entrainer and the hydrocarbon in order that the entrainer may be recycled to the azeotropic distillation column.

Un courant de purge provenant d'une colonne de distillation azéotrope et contenant un entraîneur, un hydrocarbure et un acide aliphatique (par exemple, respectivement, de l'acétate de n-propyle, un xylène et de l'acide acétique), est traité au moyen d'une colonne d'épuration pour effectuer la séparation de l'entraîneur et de l'hydrocarbure afin que l'entraîneur puisse être recyclé par renvoi à la colonne de distillation azéotrope.

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