Experimental investigation of the mixing efficiency via intensity of segregation along axial direction of a rotating bar reactor  

作　　者：Abdelgadir Bashir Banaga Yan-Bin Li Zhi-Hao Li Bao-Chang Sun Guang-Wen Chu 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composite,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 [3]Department of Chemical Engineering,Tiangong University,Tianjin 300387,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第7期153-159,共7页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(21725601)。

摘　　要：As a significant index to evaluate the mixing efficiency,studying the concentration distribution is directly related to the intensity of segregation(I_(s)).In this work,the I_(s) of the mixture composed of NaCl solutionwater was investigated experimentally in a rotating bar reactor(RBR)by the conductivity method.The results showed that the mixing efficiency was improved along the axial direction from the bottom to the top in the RBR.The concentration distribution at the bottom section was more uneven,and I_(s) was higher compared with the top section,which decreased from 6.53×10^(-5)to 1.57×10^(-7).With the increase of rotational speed from 0 to 700 r·min^(-1),I_s at the bottom and top sections decreased from 4.27×10^(-3)to 7.10×10^(-5)and from 1.93×10^(-3)to 7.29×10^(-7),respectively.The increases flow rate of solution A,and the decreases of concentration of NaCl and flow rate of solution B gave rise to the reduction of I_(s),signifying an improved mixing efficiency.The results revealed that the conductivity method used in this paper has high efficiency and low cost to measure the I_(s),which indicates a promising prospect for estimating reactors'mixing performance.

关 键 词：Intensity of segregation Mixing efficiency Rotating bar reactor Conductivity method Concentration distribution 

分 类 号：TQ051.71[化学工程]