Method for preparing 2, 2 '-dipyridyl by using near-isothermal reaction device

• Main Authors: HUANG LONG, DU SONGSONG, YU ZHAOKAI
• Format: Patent
• Language: Chinese; English
• Published: 06.12.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the technical field of preparation of 2, 2 '-dipyridyl, and particularly relates to a method for preparing 2, 2'-dipyridyl by using a near-isothermal device. According to the invention, multiple sections of catalyst reaction beds are arranged in the reactor, each section of catalyst reaction bed is fed in sections, and the reaction temperature of each section of catalyst reaction bed is controlled, so that the reaction temperature is uniform in the reaction process, and the phenomenon of higher temperature rise is avoided, thereby improving the yield of the product, and in addition, the reaction temperature is uniform, and the yield of the product is improved. The stability of the catalyst can be ensured, the reaction is facilitated, and the product yield is further improved. 本发明属于2,2'-联吡啶的制备技术领域，具体涉及一种利用近等温装置制备2,2'-联吡啶的方法。本发明通过在反应器设置多段催化剂反应床，且每段催化剂反应床分段进料，同时控制每段催化剂反应床的反应温度，使得反应过程中，反应温度均匀，不会出现较高温度的温升现象，从而提高了产物的收率，另外，反应温度均匀，可以保证催化剂的稳定，有利于反应的进行，进一步提高了产物收率。