Micromixing Efficiency of Viscous Media in Micro-channel Reactor  

作　　者：杨旷 初广文 邵磊 向阳 张亮亮 陈建峰 

机构地区：[1]Research Center of the Ministry of Education for High Gravity Engineering and Technology, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China [2]Key Lab for Nanomaterials, Ministry of Education, Beijing University &Chemical Technology, Beijing 100029, China

出　　处：《Chinese Journal of Chemical Engineering》2009年第4期546-551,共6页中国化学工程学报（英文版）

基　　金：Supported by the National-Natural Science Foundation of China （20821004, 20806004） and the National High Technology Research and Development Program of China （2007AA030207, 2006AA030202, 2006AA030203）.

摘　　要：Micromixing efficiency of viscous media in Y-type micro-channel reactor was studied by using iodide-iodate test reaction as working system.Experiments were carried out in water-glycerin mixtures with 7 different viscosities.The experimental results showed that segregation index of the micro-channel reactor increases with the decrease of volumetric flow rate and the increase of solution viscosity.Based on the incorporation model,the micromixing time tm of the micro-channel reactor was estimated in the range of 10-4-10-3s at different viscosities,which indicated that the micro-channel reactor possesses a much better micromixing performance compared to the stirred tank(tm=0.02-0.2s).Micromixing efficiency of viscous media in Y-type micro-channel reactor was studied by using iodide-iodate test reaction as working system. Experiments were carried out in water-glycerin mixtures with 7 different viscosities. The experimental results showed that segregation index of the micro-channel reactor increases with the decrease of volumetric flow rate and the increase of solution viscosity. Based on the incorporation model, the micromixing time tm of the micro-channel reactor was estimated in the range of 10^-4—10^-3 s at different viscosi- ties, which indicated that the micro-channel reactor possesses a much better micromixing performance compared to the stirred tank （tm= 0.02—0.2s）.

关 键 词：micro-channel reactor MICROMIXING incorporation model VISCOSITY 

分 类 号：TQ032.41[化学工程] TQ052