SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (2): 159-165.doi: 10.1016/j.cjche.2016.08.029

• Selected Papers from the International Chemical Separation Technology Conference (ICSTC) • 上一篇    下一篇

Effect of water on extractive desulfurization of fuel oils using ionic liquids: A COSMO-RS and experimental study

Zhen Song, Dian Yu, Qian Zeng, Jingjing Zhang, Hongye Cheng, Lifang Chen, Zhiwen Qi   

  1. Max Planck Partner Group at the State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • 收稿日期:2016-06-17 修回日期:2016-08-29 出版日期:2017-02-28 发布日期:2017-03-14
  • 通讯作者: Zhiwen Qi E-mail:zwqi@ecust.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (NSFC U1462123), PetroChina Innovation Foundation, and Fundamental Research Funds for the Central Universities of China (22201313007).

Effect of water on extractive desulfurization of fuel oils using ionic liquids: A COSMO-RS and experimental study

Zhen Song, Dian Yu, Qian Zeng, Jingjing Zhang, Hongye Cheng, Lifang Chen, Zhiwen Qi   

  1. Max Planck Partner Group at the State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2016-06-17 Revised:2016-08-29 Online:2017-02-28 Published:2017-03-14
  • Supported by:
    Supported by the National Natural Science Foundation of China (NSFC U1462123), PetroChina Innovation Foundation, and Fundamental Research Funds for the Central Universities of China (22201313007).

摘要: When evaluating ionic liquids (ILs) for extractive desulfurization (EDS) of fuel oils, the inevitable presence of water in the system may have a significant and in many cases strongly negative effect. However, few studies have considered this particular issue and a promoted water effect on EDS is scarcely reported. In this work, COSMO-RS was firstly employed to calculate the capacity and selectivity for EDS of various IL/H2O mixtures, which cover different IL characters and a wide water concentration range. Experiments were then conducted with a representative IL[C4MIM] [H2PO4], whose stable and even promoted extraction performance with a small amount of water was suggested by COSMO-RS. Through analyses of the desulfurization ratio, the crosssolubility and the water content in the desulfurized fuel, the promoted effect of water within a certain range (<10 wt%) was experimentally demonstrated. Moreover, such effect of water was explained combining the viscosity, the solvent-solute interactions and the COSMO-RS based analysis.

关键词: Extractive desulfurization, Ionic liquids, COSMO-RS, Water content effect

Abstract: When evaluating ionic liquids (ILs) for extractive desulfurization (EDS) of fuel oils, the inevitable presence of water in the system may have a significant and in many cases strongly negative effect. However, few studies have considered this particular issue and a promoted water effect on EDS is scarcely reported. In this work, COSMO-RS was firstly employed to calculate the capacity and selectivity for EDS of various IL/H2O mixtures, which cover different IL characters and a wide water concentration range. Experiments were then conducted with a representative IL[C4MIM] [H2PO4], whose stable and even promoted extraction performance with a small amount of water was suggested by COSMO-RS. Through analyses of the desulfurization ratio, the crosssolubility and the water content in the desulfurized fuel, the promoted effect of water within a certain range (<10 wt%) was experimentally demonstrated. Moreover, such effect of water was explained combining the viscosity, the solvent-solute interactions and the COSMO-RS based analysis.

Key words: Extractive desulfurization, Ionic liquids, COSMO-RS, Water content effect