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Process for distillation azeitrópica a feed material and process for the production of an aromatic acid carboxìlico
Process for distillation azeitrópica a feed material and process for the production of an aromatic acid carboxìlico
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机译：蒸馏azeitr pica进料的方法和生产芳族酸羧的方法
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摘要
b "azeotropic distillation process for a feed material and process for the production of an aromatic acid carboxu00eclico" d .The present invention is a process for the azeotropic distillation of an improved feed material in which the feed material comprises an aliphatic carboxylic acid.Water and an impurity of ester derived from the carboxylic acid.With the improvement comprises: (a) the conduct of the azeotropic distillation in the presence of an organic vehicle to produce a component of the liquid phase comprising the acid carboxu00edliAliphatic CO which has a reduced water content compared to the water content in the feed material and a component of the vapor phase which contains the vehicle.The water and the impurity of ester; (b) condensation of the vapor phase component under conditions by which the organic vehicle, and the water condensate while a substantial portion of theThe impurity of the ester remains in the vapor phase; (c) recovery of the impurity of the ester in the vapor phase; (d) separation of the organic vehicle and the condensed water from step (b) into an organic phase and an F.The aqueous phase; and (E) return of the organic phase to a distillation column.
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