SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2019, Vol. 27 ›› Issue (2): 278-285.DOI: 10.1016/j.cjche.2018.10.011

• Fluid Dynamics and Transport Phenomena • Previous Articles     Next Articles

Experimental study of power consumption, local characteristics distributions and homogenization energy in gas–liquid stirred tank reactors

Facheng Qiu1,3, Zuohua Liu1, Renlong Liu1, Xuejun Quan3, Changyuan Tao1, Yundong Wang2   

  1. 1 School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
    2 Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    3 School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
  • Received:2018-08-30 Revised:2018-09-28 Online:2019-03-18 Published:2019-02-28
  • Contact: Zuohua Liu, Renlong Liu
  • Supported by:

    Supported by the National Natural Science Foundation of China (21576033, 21636004), Central University of Basic Scientific Research Special Project (106112017CDJQJ228808), Chongqing Special Social Undertakings and People's Livelihood Security Science and Technology Innovation (cstc2017shmsA90016), National Key Research and Development Project (2017YFB0603105), and National Sci-Tech Support Plan (2015BAB17B01)

Experimental study of power consumption, local characteristics distributions and homogenization energy in gas–liquid stirred tank reactors

Facheng Qiu1,3, Zuohua Liu1, Renlong Liu1, Xuejun Quan3, Changyuan Tao1, Yundong Wang2   

  1. 1 School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
    2 Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    3 School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
  • 通讯作者: Zuohua Liu, Renlong Liu
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21576033, 21636004), Central University of Basic Scientific Research Special Project (106112017CDJQJ228808), Chongqing Special Social Undertakings and People's Livelihood Security Science and Technology Innovation (cstc2017shmsA90016), National Key Research and Development Project (2017YFB0603105), and National Sci-Tech Support Plan (2015BAB17B01)

Abstract: In this paper, the power consumption, the vertical local void fraction and the local gas-liquid interfacial area are investigated in the aerated stirred tank reactors (STRs) equipped with a rigid-flexible impeller. Meanwhile, the regressive correlation based on power consumption and interfacial area is proposed. Then a novel homogenization energy (HE=RSDPtm) expression based on power consumption and local interfacial area is redefined and used to indicate the mixing efficiency. The optimal operating mode is selected based on the change of the HE value. This paper can provide research ideas for structural optimization of stirred reactors.

Key words: Stirred tank, Gas&ndash, liquid two-phase, Power consumption, Local characteristics, Homogenization energy

摘要: In this paper, the power consumption, the vertical local void fraction and the local gas-liquid interfacial area are investigated in the aerated stirred tank reactors (STRs) equipped with a rigid-flexible impeller. Meanwhile, the regressive correlation based on power consumption and interfacial area is proposed. Then a novel homogenization energy (HE=RSDPtm) expression based on power consumption and local interfacial area is redefined and used to indicate the mixing efficiency. The optimal operating mode is selected based on the change of the HE value. This paper can provide research ideas for structural optimization of stirred reactors.

关键词: Stirred tank, Gas&ndash, liquid two-phase, Power consumption, Local characteristics, Homogenization energy