文献类型：期刊文献

英文题名：Mixing characteristics and intensification mechanism of an improved swirl jet mixer for high phase ratios

作者：Yan, Shijie[1];Lv, Fuwei[1];Wang, Bingjie[1];Dong, Xiao[1];Yang, Xiaoyong[1];Ma, Likun[1];Chen, Sheng[2];Han, Bingqiang[1];Bai, Zhishan[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]China Special Equipment Inspection & Res Inst, Technol Innovat Ctr Risk Prevent & Control Refinin, Beijing 100029, Peoples R China

年份：2024

卷号：135

起止页码：457

外文期刊名：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY

收录：;EI(收录号：20240915657237);WOS:【SCI-EXPANDED(收录号:WOS:001265831600001)】；

基金：Acknowledgements This work was supported by National Key Research and development Program of China (2022YFC3004504) , the National Science Foundation for Distinguished Young Scholars of China (22225804) and the National Natural Science Foundation of China (22108082) .

语种：英文

外文关键词：Swirl jet mixer; High phase ratios; CFD-PBM; Mixing characteristics

摘要：The liquid-liquid mixing processes suffer from the problems of inhomogeneous mixing and low mass transfer efficiency in jet mixer. In particular, the "short pass" phenomenon exacerbated the deterioration of mixing performance under high-phase-ratio conditions. In this study, A novel swirl jet mixer was developed to address above issues by computational fluid mechanics (CFD) coupled with population balance modeling (PBM) and experiments. Compared with the conventional jet mixer, the swirl jet mixer exhibited a significantly reduced coefficient of variation (COV) value of 0.07 and Sauter mean diameter (d3,2) as low as 7.4 mu m. The optimal mixing performance was achieved at the Re of 2.625 x 104. Numerical simulations demonstrated that the implementation of a swirl field effectively intensified liquid-liquid interactions, including collisions, turbulence, and interfacial contacts. Additionally, the increase in turbulence stress within the flow field resulted in an augmentation of turbulence kinetic energy, the reduction in droplet size, and an enhancement of mixing efficiency. The research findings can serve as the theoretical foundation for the widespread application and technological innovation of jet mixer.