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

作　　者：Mehdi Asadollahzadeh Alireza Hemmati Meisam Torab-Mostaedi Mansour Shirvani Ahad Ghaemi Zahra Sadat Mohsenzadeh 

机构地区：[1]Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P.O. Box： 11365-8486, Tehran, Iran [2]School of Chemical Engineering, Iron 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

出　　处：《Chinese Journal of Chemical Engineering》2017年第1期53-61,共9页中国化学工程学报（英文版）

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.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 

分 类 号：TQ021.4[化学工程]