PX PTA BUILT-IN MICRO INTERFACIAL ENHANCED REACTION SYSTEM AND PROCESS FOR PTA PRODUCTION WITH PX

摘要

The present invention provides a built-in micro-interface device-enhanced reaction system for generating PTA from PX, the system comprising a reactor and a micro-interface device disposed inside the reactor, the reactor comprising a shell, concentrically disposed inside the shell and a circulating heat exchange device partially disposed outside the shell, wherein a lower end of the inner tank is connected to an inner bottom surface of the shell to be closed and an upper end is open; The zone is a first reaction zone, the inner tank is sequentially a second reaction zone and a third reaction zone from top to bottom, and the circulating heat exchange device is respectively connected to the inner tank and the micro-interface device. The present invention effectively solves the problem that in the process of generating PTA from PX according to the existing technology, a large amount of acetic acid, a reaction solvent, is wasted under high temperature and high pressure, and the product TA cannot be taken out in a timely manner, greatly reducing energy consumption and saving acetic acid solvent and improved the reaction efficiency.