Recycling method of ester exchange catalyst

• Main Authors: SHEN CHANGLIN, JING XIAOJING, GUO JINHUA, ZHAN MING
• Format: Patent
• Language: Chinese; English
• Published: 25.03.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a method for recycling a transesterification catalyst. The recycling method of the transesterification catalyst comprises the following steps: collecting mixed feed liquid of a transesterification reaction rectifying tower; conveying the mixed material liquid to a first evaporator, and carrying out first-stage evaporation concentration operation to obtain a first-stage concentrated solution; conveying the first-stage concentrated solution to a second evaporator, and carrying out second-stage evaporation and concentration operation to obtain a second-stage concentrated solution; and drying the secondary concentrated solution to obtain the transesterification catalyst. The recycling method of the transesterification catalyst has a high recycling rate on the transesterification catalyst, so that the environmental protection property of the process is improved, and meanwhile, the production cost is effectively reduced. 本申请提供一种酯交换催化剂的回收循环利用方法。上述的酯交换催化剂的回收循环利用方法包括以下步骤：对酯交换反应精馏塔的混合料液进行收集操作；将混合