Numerical and experimental investigations of liquid mixing in two-stage micro-impinging stream reactors  

作　　者：Tianyu Guo Bin Ruan Zhiwei Liu Muhammad Ali Jamal Lixiong Wen Jianfeng Chen 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China [2]Research Center of the Ministry of Education for High Gravity Engineering and Technology,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Chinese Journal of Chemical Engineering》2017年第4期391-400,共10页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos.21376015,21576012 and 91334206)

摘　　要：A two-stage micro-impinging stream reactor(TS-MISR) that combined a first pre-mixing stage with a second micro-impinging stream reacting stage for continuous multi-component reacting systems has been built from commercial T-junctions and steel micro-capillaries. Both of operating parameters and reactor configurations,such as jet Reynolds number(Rej), volumetric flow ratio(R), the first-stage junction angle(φ), the connecting capillary length(Lc) and connecting capillary diameter(dc), had significant effects on the micromixing efficiency of the reactor. Such effects were investigated for both of the two stage structures, respectively, by experimental and CFD methods and were optimized for the best micromixing performance. Intensified micromixing among at least three reacting components can be achieved in a continuous mode by using TS-MISR; therefore, it is expected that the TS-MISR will produce products of higher quality with more uniform and stable element distribution.A two-stage micro-impinging stream reactor（TS-MISR） that combined a first pre-mixing stage with a second micro-impinging stream reacting stage for continuous multi-component reacting systems has been built from commercial T-junctions and steel micro-capillaries. Both of operating parameters and reactor configurations,such as jet Reynolds number（Rej）, volumetric flow ratio（R）, the first-stage junction angle（φ）, the connecting capillary length（Lc） and connecting capillary diameter（dc）, had significant effects on the micromixing efficiency of the reactor. Such effects were investigated for both of the two stage structures, respectively, by experimental and CFD methods and were optimized for the best micromixing performance. Intensified micromixing among at least three reacting components can be achieved in a continuous mode by using TS-MISR; therefore, it is expected that the TS-MISR will produce products of higher quality with more uniform and stable element distribution.

关 键 词：mixing junction volumetric connecting reacting capillary length turbulence viscosity outlet 

分 类 号：TQ027.1[化学工程]