SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 54 ›› Issue (2): 280-287.DOI: 10.1016/j.cjche.2022.03.015

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Viscous behavior of 1-hexyl-methylimidazolium bis(trifluoromethylsulfonyl)imide/titanium dioxide/polyethylene glycol

Yifeng Chen1,2, Hang Yu1, Jingjing Chen1, Xiaohua Lu1, Xiaoyan Ji2   

  1. 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China;
    2. Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå 97187, Sweden
  • Received:2021-12-03 Revised:2022-03-02 Online:2023-05-11 Published:2023-02-28
  • Contact: Xiaohua Lu,E-mail:xhlu@njtech.edu.cn;Xiaoyan Ji,E-mail:xiaoyan.ji@ltu.se
  • Supported by:
    We would like to thank the National Natural Science Foundation of China (22108115, 21838004) and Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao Young Scholars (21729601). Y. Chen thanks China Postdoctoral Science Foundation funded project (2021M691554) and Kempe foundation (SMK21-0020) in Sweden, and X. Ji thanks Swedish Energy Agency.

Viscous behavior of 1-hexyl-methylimidazolium bis(trifluoromethylsulfonyl)imide/titanium dioxide/polyethylene glycol

Yifeng Chen1,2, Hang Yu1, Jingjing Chen1, Xiaohua Lu1, Xiaoyan Ji2   

  1. 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China;
    2. Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå 97187, Sweden
  • 通讯作者: Xiaohua Lu,E-mail:xhlu@njtech.edu.cn;Xiaoyan Ji,E-mail:xiaoyan.ji@ltu.se
  • 基金资助:
    We would like to thank the National Natural Science Foundation of China (22108115, 21838004) and Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao Young Scholars (21729601). Y. Chen thanks China Postdoctoral Science Foundation funded project (2021M691554) and Kempe foundation (SMK21-0020) in Sweden, and X. Ji thanks Swedish Energy Agency.

Abstract: Viscous behavior is important for the process design, especially for the non-Newtonian fluid. In this study, the viscous behaviors of slurry, i.e., 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Hmim][NTf2])/titanium dioxide (TiO2)-polyethylene glycol (PEG200), were determined experimentally and systematically. The pressure drop was estimated when [Hmim][NTf2]/TiO2-PEG200 was used as the solvent in the absorption/desorption towers. The results show that the slurry belongs to the non-Newtonian fluid with shear-thinning behavior. High temperature and low solid content are beneficial to reduce the viscosity of [Hmim][NTf2]/TiO2-PEG200, and the presence of [Hmim][NTf2] can effectively reduce the viscosity of the slurry. In addition, high temperature is preferable for reducing the pressure drop, and the pressure drop of slurry with the solid content value of 8.0% (mass) can reduce by 28.0% when the temperature increases from 313 to 333 K.

Key words: Viscosity, Ionic liquids, Model, Slurry, Pressure drop

摘要: Viscous behavior is important for the process design, especially for the non-Newtonian fluid. In this study, the viscous behaviors of slurry, i.e., 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Hmim][NTf2])/titanium dioxide (TiO2)-polyethylene glycol (PEG200), were determined experimentally and systematically. The pressure drop was estimated when [Hmim][NTf2]/TiO2-PEG200 was used as the solvent in the absorption/desorption towers. The results show that the slurry belongs to the non-Newtonian fluid with shear-thinning behavior. High temperature and low solid content are beneficial to reduce the viscosity of [Hmim][NTf2]/TiO2-PEG200, and the presence of [Hmim][NTf2] can effectively reduce the viscosity of the slurry. In addition, high temperature is preferable for reducing the pressure drop, and the pressure drop of slurry with the solid content value of 8.0% (mass) can reduce by 28.0% when the temperature increases from 313 to 333 K.

关键词: Viscosity, Ionic liquids, Model, Slurry, Pressure drop