Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor

doi:10.1016/j.cjche.2016.06.007

›› 2017, Vol. 25 ›› Issue (1): 53-61.DOI: 10.1016/j.cjche.2016.06.007

• Separation Science and Engineering • 上一篇下一篇

Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor

Mehdi Asadollahzadeh¹, Alireza Hemmati², Meisam Torab-Mostaedi¹, Mansour Shirvani², Ahad Ghaemi², ZahraSadat Mohsenzadeh³

1 Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box:11365-8486, Tehran, Iran;
2 School of Chemical Engineering, Iran University of Science and Technology, Tehran, P. O. Box 16765-163, Iran;
3 Department of Chemical Engineering, Faculty of Engineering, South Tehran Branch, Islamic Azad University, Iran

收稿日期:2016-04-10 修回日期:2016-06-18 出版日期:2017-01-28 发布日期:2017-02-15
通讯作者: Mehdi Asadollahzadeh,E-mail address:masadollahzadeh@aeoi.org.ir

Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor

Mehdi Asadollahzadeh¹, Alireza Hemmati², Meisam Torab-Mostaedi¹, Mansour Shirvani², Ahad Ghaemi², ZahraSadat Mohsenzadeh³

1 Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box:11365-8486, Tehran, Iran;
2 School of Chemical Engineering, Iran University of Science and Technology, Tehran, P. O. Box 16765-163, Iran;
3 Department of Chemical Engineering, Faculty of Engineering, South Tehran Branch, Islamic Azad University, Iran

Received:2016-04-10 Revised:2016-06-18 Online:2017-01-28 Published:2017-02-15

摘要/Abstract

摘要： The mass transfer process in a perforated rotating disk contactor (PRDC) using a toluene-acetone-water system was investigated. The volumetric overall mass transfer coefficients are calculated in a PRDC column. Both mass transfer directions are considered in experiments. The influences of operating variables containing agitation rate, dispersed and continuous phase flow rates and mass transfer in the extraction column are studied. According to obtained results, mass transfer is significantly dependent on agitation rate, while the dispersed and continuous phase flow rates have a minor effect on mass transfer in the extraction column. Furthermore, a novel empirical correlation is developed for prediction of overall continuous phase Sherwood number based on dispersed phase holdup, Reynolds number and mass transfer direction. There has been great agreement between experimental data and predicted values using a proposed correlation for all operating conditions.

关键词: Perforated rotating disk contactor, Mass transfer coefficient, dispersed phase holdup, Interfacial area

Abstract: The mass transfer process in a perforated rotating disk contactor (PRDC) using a toluene-acetone-water system was investigated. The volumetric overall mass transfer coefficients are calculated in a PRDC column. Both mass transfer directions are considered in experiments. The influences of operating variables containing agitation rate, dispersed and continuous phase flow rates and mass transfer in the extraction column are studied. According to obtained results, mass transfer is significantly dependent on agitation rate, while the dispersed and continuous phase flow rates have a minor effect on mass transfer in the extraction column. Furthermore, a novel empirical correlation is developed for prediction of overall continuous phase Sherwood number based on dispersed phase holdup, Reynolds number and mass transfer direction. There has been great agreement between experimental data and predicted values using a proposed correlation for all operating conditions.

Key words: Perforated rotating disk contactor, Mass transfer coefficient, dispersed phase holdup, Interfacial area

Mehdi Asadollahzadeh, Alireza Hemmati, Meisam Torab-Mostaedi, Mansour Shirvani, Ahad Ghaemi, ZahraSadat Mohsenzadeh. Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor[J]. , 2017, 25(1): 53-61.

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Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor

Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor

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