Modeling and Simulation of Continuous Polycondensation Process of Nylon 66

作者：Lin C.; Tang J.; Zheng X.; Xi Z.; Zhao L.^*

来源：Chemical Reaction Engineering and Technology, 2017, 33(3): 205-214.

DOI：10.11730/j.issn.1001-7631.2017.03.0205.10

• Mathematical simulation
• Polycondensation
• Polyhexamethylene adipamide
• Reactor

This research is to deepen the understanding of the polycondensation process of polyhexamethylene adipamide (nylon 66) and guide the optimization of nylon 66 production process and development of new technology. Based on the polymerization characteristics and hydrodynamic characteristics of the reactor, the kinetic model of the coupled polymerization, the vapor-liquid equilibrium and mass transfer models of the water-polymer system, the mathematic model of nylon 66 continuous polycondensation process tubular reactor and post-polycondensation reactor was established, and the simulation of nylon 66 continuous polymerization was realized. The simulation results indicated that the molecular weight and water content of the polymer were in good accordance with the industrial production data. The reliability of the model was verified and the influence of the polymerization parameters on the molecular weight and water content of the polymer was simulated The results demonstrated that reducing the HAc content, increasing the reactor temperature, reducing the reactor pressure of the tubular and the post-polycondensation reactors were beneficial to rapidly increase the molecular weight of the polymer. The optimum process conditions were post-reactor temperature of 280-285℃, the horizontal tubular reactor pressure of 1 600-1 750 kPa. The established models were good accuracy and can be used to examine the effects of process parameters and guide industrial applications.

• 出版日期2017
• 单位华东理工大学