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Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor 被引量:1

Use of axial dispersion model for determination of Sherwood number and mass transfer coefficients in a perforated rotating disc contactor
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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.
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第1期53-61,共9页 中国化学工程学报(英文版)
关键词 Perforated rotating disk contactor Mass transfer coefficient dispersed phase holdup Interfacial area 转盘萃取塔 传质过程 轴向扩散模型 系数测定 接触器 应用 开孔 PRDC
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