SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (9): 1785-1791.DOI: 10.1016/j.cjche.2018.02.009

• Fluid Dynamics and Transport Phenomena • 上一篇    下一篇

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

Baoqing Liu, Yijun Zheng, Ruijia Cheng, Zilong Xu, Manman Wang, Zhijiang Jin   

  1. Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2017-09-13 修回日期:2017-12-29 出版日期:2018-09-28 发布日期:2018-10-17
  • 通讯作者: Zhijiang Jin,E-mail address:zhijiangjin@126.com
  • 基金资助:

    Supported by the Zhejiang Provincial Natural Science Foundation of China (LY16B060003); and the National Natural Science Foundation of China (21776246).

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

Baoqing Liu, Yijun Zheng, Ruijia Cheng, Zilong Xu, Manman Wang, Zhijiang Jin   

  1. Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2017-09-13 Revised:2017-12-29 Online:2018-09-28 Published:2018-10-17
  • Contact: Zhijiang Jin,E-mail address:zhijiangjin@126.com
  • Supported by:

    Supported by the Zhejiang Provincial Natural Science Foundation of China (LY16B060003); and the National Natural Science Foundation of China (21776246).

摘要: The effects of impeller type, stirring power, gas flow rate, and liquid concentration on the gas-liquid mixing in a shear-thinning system with a coaxial mixer were investigated by experiment, and the overall gas holdup, relative power demand, and volumetric mass transfer coefficient under different conditions were compared. The results show that, the increasing stirring power or gas flow rate is beneficial in promoting the overall gas holdup and volumetric mass transfer coefficient, while the increasing system viscosity weakens the mass transfer in a shearing-thinning system. Among the three turbines, the six curved-blade disc turbine (BDT-6) exhibits the best gas pumping capacity; the six 45° pitched-blade disc turbine (PBDT-6) has the highest volumetric mass transfer coefficient at the same unit volume power.

关键词: Non-Newtonian fluids, Coaxial mixer, Gas holdup, Relative power demand, Mass transfer

Abstract: The effects of impeller type, stirring power, gas flow rate, and liquid concentration on the gas-liquid mixing in a shear-thinning system with a coaxial mixer were investigated by experiment, and the overall gas holdup, relative power demand, and volumetric mass transfer coefficient under different conditions were compared. The results show that, the increasing stirring power or gas flow rate is beneficial in promoting the overall gas holdup and volumetric mass transfer coefficient, while the increasing system viscosity weakens the mass transfer in a shearing-thinning system. Among the three turbines, the six curved-blade disc turbine (BDT-6) exhibits the best gas pumping capacity; the six 45° pitched-blade disc turbine (PBDT-6) has the highest volumetric mass transfer coefficient at the same unit volume power.

Key words: Non-Newtonian fluids, Coaxial mixer, Gas holdup, Relative power demand, Mass transfer