Three-dimensional CFD-PBM coupled model of the temperature fields in fluidized-bed polymerization reactors

Authors

  • Xi-Zhong Chen,

    1. Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    Search for more papers by this author
  • Zheng-Hong Luo,

    Corresponding author
    1. Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    • Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    Search for more papers by this author
  • Wei-Cheng Yan,

    1. Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    Search for more papers by this author
  • Ying-Hua Lu,

    1. Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    Search for more papers by this author
  • I-Son Ng

    1. Dept. of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
    Search for more papers by this author

Abstract

A three-dimensional (3-D) computational fluid dynamics model, coupled with population balance (CFD-PBM), was developed to describe the gas–solid two-phase flow in fluidized-bed polymerization reactors. The model considered the Eulerian–Eulerian two-fluid model, the kinetic theory of granular flow, the population balance, and heat exchange equations. First, the model was validated by comparing simulation results with the classical calculated data. The entire temperature fields in the reactor were also obtained numerically. Furthermore, two case studies, involving constant solid particle size and constant polymerization heat or evolving particle-size distribution, polymerization kinetics, and polymerization heat, were designed to identify the model. The results showed that the calculated results in the second case were in good agreement with the reality. Finally, the model of the second case was used to investigate the influences of operational conditions on the temperature field. © 2011 American Institute of Chemical Engineers AIChE J, 2011

Ancillary