Experimental Study on Influential Factors of Mass Transfer in a Cross-flow Rotating Packed Bed
DONG Mei-ying QI Gui-sheng LIU You-zhi GUO Qiang SONG Bin WANG Tan
Department of Chemical Engineering, North University of China Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China Department of Chemical Engineering, North University of China Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China Department of Chemical Engineering, North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering
Abstract：A pilot-scale experimental apparatus was used the mass transfer in a cross-flow rotating packed bed, total volumetric mass-transfer coefficient KLa, effective interfacial area ae were measured by considering the effects of gas velocity, liquid spray density, high gravity factor and gas-liquid contact time with a system of CO2 chemisorption into NaOH solution. The results show that both volumetric mass transfer coefficient and effective interfacial area increase with increasing of gas velocity, liquid spray density and high gravity factor, KLa increases slowly at first and declines sharply with increasing of gas-liquid contact time, while ae decreases slowly with increasing of gas-liquid contact time. The optimal operation conditions are gas velocity 1.69 m/s, liquid spray density 32 m3/(m2×h), high gravity factor 104, and gas-liquid contact time 0.1 s. The mass transfer performance in the present cross-flow rotating packed bed can be enhanced up to 1.52~2.32 times than that reported in the literature under a large gas flow rate. Empirical equations of KLa and ae can be expressed as KLa=1.8221(atDL/dp)ReL0.6371GrL0.0548ScL0.0623 and ae/at=2980.9ReL0.2349FrL-0.045WeL0.5023f-0.5.
董梅英 祁贵生 刘有智 郭强 宋彬 王探. 错流旋转填料床传质特性影响因素的实验研究[J]. 过程工程学报, 2015, 15(6): 929-934.
DONG Mei-ying QI Gui-sheng LIU You-zhi GUO Qiang SONG Bin WANG Tan. Experimental Study on Influential Factors of Mass Transfer in a Cross-flow Rotating Packed Bed. Chin. J. Process Eng., 2015, 15(6): 929-934.
2015, Vol. 15 
