SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (5): 815-820.

• • 上一篇    下一篇

CFD Simulation and Experimental Validation of Fluid Flow in Pre-distributor

张吕鸿1, 高国华1, 隋红1,2, 李洪1,2, 李鑫钢1,2   

  1. 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
  • 收稿日期:2011-06-12 修回日期:2011-08-31 出版日期:2011-10-28 发布日期:2011-10-28
  • 通讯作者: LI Xingang,E-mail:lxg@tju.edu.cn
  • 基金资助:
    Supported by the National Key Basic Research and Development Program of China (2009CB219905, 2009CB219907);the Program for Changjiang Scholars and Innovative Research Teams in Universities (IRT0936)

CFD Simulation and Experimental Validation of Fluid Flow in Pre-distributor

ZHANG Lühong1, GAO Guohua1, SUI Hong1,2, LI Hong1,2, LI Xingang1,2   

  1. 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
  • Received:2011-06-12 Revised:2011-08-31 Online:2011-10-28 Published:2011-10-28
  • Supported by:
    Supported by the National Key Basic Research and Development Program of China (2009CB219905, 2009CB219907);the Program for Changjiang Scholars and Innovative Research Teams in Universities (IRT0936)

摘要: Liquid distributor is a very import internal for distillation columns. Pre-distributor is usually set on the top of distributor for initial distribution. Fluid flow in pre-distributor is a complex system of variable mass flow with many orifices and sub-branches. Consequently, the two phase modeling of pre-distributors was carried out and the homogeneous model with free surface model was applied. The numerical method was validated by comparing with experimental data. Using the simulated results for different pre-distributors, the impacts of inflow rate, location and orientation upon the outflow distribution were investigated. Furthermore, influences of the outflow distribution for pre-distributor on liquid uniformity in trough were also analyzed. The conclusions can be adopted for the struc-tural design of liquid distributor and pre-distributor of large scale.

关键词: pre-distributor, computational fluid dynamics, orifices, trough, outflow distribution

Abstract: Liquid distributor is a very import internal for distillation columns. Pre-distributor is usually set on the top of distributor for initial distribution. Fluid flow in pre-distributor is a complex system of variable mass flow with many orifices and sub-branches. Consequently, the two phase modeling of pre-distributors was carried out and the homogeneous model with free surface model was applied. The numerical method was validated by comparing with experimental data. Using the simulated results for different pre-distributors, the impacts of inflow rate, location and orientation upon the outflow distribution were investigated. Furthermore, influences of the outflow distribution for pre-distributor on liquid uniformity in trough were also analyzed. The conclusions can be adopted for the struc-tural design of liquid distributor and pre-distributor of large scale.

Key words: pre-distributor, computational fluid dynamics, orifices, trough, outflow distribution