公开(公告)号：US3686078A

公开(公告)日：1972-08-22

申请号：US3686078D

申请日：1969-12-02

Applicant: HOECHST AG

Inventor： HAUPTMANN GERHARD ,  WEBER ERHARD

IPC: B01D3/40 ,  C07C45/00 ,  C07C45/82 ,  C07C45/83 ,  C07C49/08 ,  C07C67/00 ,  C07C49/04

CPC classification number: C07C45/82 ,  C07C45/83 ,  C07C49/08

Abstract: PROCESS FOR THE DISTILLATIVE PURIFICATION OF CRUDE ACETONE PRODUCED BY OXIDATION OF PROPYLENE IN THE PRESENCE OF CATALYST CONTAINING A NOBLE METAL AND A VARIVALENT HEAVY METAL HALIDE IN A SYSTEM OF 4 DISTILLING ZONES WHEREIN AQUEOUS ACETONE IS DISTILLED OFF IN THE FIRST ZONE, WHICH ACETONE IS SUBJECTED IN THE SECOND ZONE TO AN EXTRACTIVE DISTILLATION, PURE ACETONE IS OBTAINED FROM THE SUMP OF THE THIRD ZONE WHILE INTHE FOURTH ZONE THE ACETONE CONTAINED IN THE SIDE STREAM OF BY-PRODUCTS OF THE FIRST ZONE IS SEPARATED.