Enhancement of CO2 Absorption under Taylor Flow in the Presence of Fine Particles

查看全文 作　　者：CAI Wangfeng ZHANG Jiao ZHANG Xubin WANG Yan QI [1]Xiangjuan

机构地区：[1]School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

出　　处：《Chinese Journal of Chemical Engineering》索引2013年第21卷第2期,共9页

基　　金：Supported by the National'Natural Science Foundation of China (20706041, 20876109), and the Natural Science Foundation of Tianjin, China (09JCYBJC06500). 摘　　要：The physical absorption of CO2 in water containing different types of particles was studied in a microchannel operated under Taylor flow.The maximum enhancement factors of 1.43 2.15 were measured for activated carbon (AcC) particles.The analysis shows that the enhancement effect can be attributed to the shuttle mechanism.Considering the separate contributions of mass transfer from bubble cap and liquid film,a heterogeneous enhancement model is developed.According to this model,the enhancement factors E Cap,E Film and E Ov are mainly determined by mass transfer coefficient KL (KL,Cap and KL,Film),adsorptive capacity of particles m,and coverage fraction of particles at gas-liquid interface ζ.With both effects of particle-to-interface adhesion and apparent viscosity included,the model predicts the enhancement effect of AcC particles reasonably well. 关键词：物理吸收细颗粒流量泰勒 CO2 增强因子传质系数二氧化碳

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Enhancement of CO2 Absorption under Taylor Flow in the Presence of Fine Particles

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