SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (8): 989-999.DOI: 10.1016/j.cjche.2016.02.004

• Separation Science and Engineering • Previous Articles     Next Articles

Experimental mass transfer coefficients in a pilot plant multistage column extractor

Mehdi Asadollahzadeh1,2, Ahad Ghaemi1, Meisam Torab-Mostaedi2, Shahrokh Shahhosseini1   

  1. 1 Department of Chemical Engineering, Iran University of Science and Technology(IUST), P. O. Box 16765-163, Tehran, Iran;
    2 Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box 11365-8486, Tehran, Iran
  • Received:2015-09-02 Revised:2015-11-01 Online:2016-09-21 Published:2016-08-28

Experimental mass transfer coefficients in a pilot plant multistage column extractor

Mehdi Asadollahzadeh1,2, Ahad Ghaemi1, Meisam Torab-Mostaedi2, Shahrokh Shahhosseini1   

  1. 1 Department of Chemical Engineering, Iran University of Science and Technology(IUST), P. O. Box 16765-163, Tehran, Iran;
    2 Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box 11365-8486, Tehran, Iran
  • 通讯作者: Mehdi Asadollahzadeh

Abstract: The volumetric overall mass transfer coefficients in a multistage column have been measured using axial dispersion model for toluene-acetone-water system. The effect of operating parameters on the volumetric overall mass transfer coefficients has been investigated for both mass transfer directions. The results show that the mass transfer performance is strongly dependent on rotor speed and mass transfer direction, although only slightly dependent on phase flow rates. In addition, empirical correlations to predict the overall mass transfer coefficients have been developed. The proposed correlations based on dimensionless numbers can be considered as a useful tool for the possible scale up of the multistage column extractor.

Key words: Multistage column, Mass transfer coefficient, Axial dispersion model, Sherwood number

摘要: The volumetric overall mass transfer coefficients in a multistage column have been measured using axial dispersion model for toluene-acetone-water system. The effect of operating parameters on the volumetric overall mass transfer coefficients has been investigated for both mass transfer directions. The results show that the mass transfer performance is strongly dependent on rotor speed and mass transfer direction, although only slightly dependent on phase flow rates. In addition, empirical correlations to predict the overall mass transfer coefficients have been developed. The proposed correlations based on dimensionless numbers can be considered as a useful tool for the possible scale up of the multistage column extractor.

关键词: Multistage column, Mass transfer coefficient, Axial dispersion model, Sherwood number