石油化工高等学校学报

石油化工高等学校学报 ›› 2008, Vol. 21 ›› Issue (2): 59-62.

• 化工机械 • 上一篇    下一篇

SK型静态混合器停留时间分布特性研究

孟辉波1, 吴剑华2, 禹言芳2   

  1. (1.天津大学化工学院,天津300072; 2.沈阳化工学院,辽宁沈阳110142)
  • 收稿日期:2007-06-12 出版日期:2008-06-20 发布日期:2017-06-28
  • 作者简介:孟辉波(1981-),男,河北赵县,博士研究生
  • 基金资助:
    国家“十五”科技攻关项目(2004BA319B1);辽宁省重大重点科技项目(2006223001)

Numerical Simulation of Residence Time Distribution in Kenics Static Mixer

MENG Hui-bo1, WU Jian-hua2, YU Yan-fang2 
  

  1. (1. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China;
     2. Shenyang Institute of Chemical Technology, Shenyang Liaoning 110142,P. R. China)
  • Received:2007-06-12 Published:2008-06-20 Online:2017-06-28

摘要: 结合脉冲示踪法利用计算流体力学方法的雷诺时均方程(RNAS)和重整化群的k-ε 湍流模型计算SK型静态混合器内的浓度响应曲线。基于正交实验原理分析流体在不同混合元件长径比、不同监测位置及不同的进口流速下的停留时间分布特性,并计算了平均停留时间和方差来研究各因素之间影响顺序。结果表明,SK 型静态混合器内的液体单相流动的轴向返混系数较小且数量级均为10-2,流动状态接近活塞流;平均停留时间随流体流速的增大而减小,随混合器长度和混合元件长径比的增加而增大。

关键词: 静态混合器, 停留时间分布, 数值模拟, 长径比

Abstract:

The concentration response curves were calculated based on pulse tracer input technique by means of CFD method adopted RANS equations and renormalization group k-ε turbulence model. The characteristic of residence time distribution measured at different outlet with different inlet velocities and aspect ratios were ealeulated and analyzed by orthogonal experiment, and the orders of factors were ranked by the range analysis of mean value and square deviation. The results show that the order of axial back mixing coefficient is 10-2, and the flowing state of the fluid in the kenics static mixer approaches plug flows. The mean residence time decreases with increasing flow rate of the fluid and increases with the increasing length and aspect ratio of the static mixers.

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引用本文

孟辉波, 吴剑华, 禹言芳. SK型静态混合器停留时间分布特性研究[J]. 石油化工高等学校学报, 2008, 21(2): 59-62.

MENG Hui-bo, WU Jian-hua, YU Yan-fang.

Numerical Simulation of Residence Time Distribution in Kenics Static Mixer
[J]. Journal of Petrochemical Universities, 2008, 21(2): 59-62.

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