SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (9): 1135-1146.

• Fluid Dynamics and Transport Phenomena • 上一篇    下一篇

Numerical simulation of micromixing effect on the reactive flow in a co-rotating twin screw extruder

Hao Tang, Yuan Zong, Ling Zhao   

  1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • 收稿日期:2016-01-20 修回日期:2016-04-27 出版日期:2016-09-28 发布日期:2016-11-11
  • 通讯作者: Ling Zhao,E-mail address:zhaoling@ecust.edu.cn
  • 基金资助:
    Supported by National Program on Key Basic Research Project (2011CB606100) and the National Natural Science Foundation of China (21406059).

Numerical simulation of micromixing effect on the reactive flow in a co-rotating twin screw extruder

Hao Tang, Yuan Zong, Ling Zhao   

  1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2016-01-20 Revised:2016-04-27 Online:2016-09-28 Published:2016-11-11
  • Supported by:
    Supported by National Program on Key Basic Research Project (2011CB606100) and the National Natural Science Foundation of China (21406059).

摘要: To control the multicomponent reactions in extrusion, reactive-mixing flow in a co-rotating twin screw extruder was numerically studied in the present paper. Effects of initial species distribution, rotating speed and flow rate on a competitive-parallel reaction were investigated and the relationship between mixing and reactions was discussed from the view of chemical reaction engineering. The simulation results show the studied operational parameters, which determine residence time distribution, earliness of mixing and segregation degree of reactive-mixing flows, affect the local species concentration and reaction time and hence have significant influences on the reaction extent. Orthogonal test was adopted to clarify the significance of operational parameters. The analysis shows that initial species distribution and flow rate are the most important factors in the control of reaction extent, and effect of rotating speed is conditional depending on the micro-mixing status of the fluid.

关键词: Multicomponent reaction, Mixing, Numerical simulation, Extrusion

Abstract: To control the multicomponent reactions in extrusion, reactive-mixing flow in a co-rotating twin screw extruder was numerically studied in the present paper. Effects of initial species distribution, rotating speed and flow rate on a competitive-parallel reaction were investigated and the relationship between mixing and reactions was discussed from the view of chemical reaction engineering. The simulation results show the studied operational parameters, which determine residence time distribution, earliness of mixing and segregation degree of reactive-mixing flows, affect the local species concentration and reaction time and hence have significant influences on the reaction extent. Orthogonal test was adopted to clarify the significance of operational parameters. The analysis shows that initial species distribution and flow rate are the most important factors in the control of reaction extent, and effect of rotating speed is conditional depending on the micro-mixing status of the fluid.

Key words: Multicomponent reaction, Mixing, Numerical simulation, Extrusion

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