Cyclohexanone refining device and method

• Main Authors: TIAN YANAN, WEN LANGYOU, GAO GUOHUA, SUN BIN
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The present invention provides a cyclohexanone refining apparatus and method, the apparatus comprises: a dividing wall column separation unit for treating a crude alcohol ketone material prepared by cyclohexanol dehydrogenation reaction to prepare a refined alcohol ketone mixture; the dividing wall column separation unit comprises a dividing wall column; the ketone refining unit is used for separating the refined alcohol-ketone mixture prepared by the dividing wall column to obtain refined ketone and ketone column circulating alcohol; by arranging the dividing wall column, coupling of light component removal and heavy impurity removal processes is realized in a single column by utilizing a dividing wall column technology, and the separation characteristic of the dividing wall column is fully utilized, so that a refined alcohol-ketone mixture with high purity is obtained, the product yield is improved, the cyclohexanone content in circulating alcohol is obviously reduced, and the equipment investment and energ