文献类型：期刊文献

英文题名：Bubble evolution and gas-liquid mixing mechanism in a static-mixer-based plug-flow reactor: A numerical analysis

作者：Wang, Lvliang[1];Peng, Yihan[1];Yang, Xuejing[2,3];Qian, Yuanyuan[2,4];Wang, Hualin[3];Xu, Yanjing[2,4];Xu, Yanxia[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Lab Lean Operat Technol Ind Water Sy, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Lab High Concentrat & Refractory Organ W, Shanghai 200237, Peoples R China;[4]McWong Environm Technol Corp Ltd, Shanghai 200135, Peoples R China

年份：2024

卷号：485

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20240915643252);WOS:【SCI-EXPANDED(收录号:WOS:001203542800001)】；

基金：The funds for this research were provided by Shanghai Pujiang Program (21PJD016) , Applied basic research of Qinghai Province (2022-ZJ-738) , the National Key R & D Program of China (2019YFA0705800) , National Natural Science Foundation of China (21876049) , Shanghai Technology Innovation Program for Carbon Neutrality (21DZ1207800) , and Shanghai Technology Innovation Program of Technical Center (20DZ2250600) .

语种：英文

外文关键词：Ozonation; Bubble; Gas-liquid; Mixing mechanism; Static mixer; Plug-flow reactor

摘要：Effective gas-liquid mixing is critical for the successful implementation of ozonation and advanced ozone-based oxidation technologies. This study focuses on a static-mixer-based plug-flow reactor derived from the HiPOxTM reactor system, which is divided into three parts. The investigation delves into the bubble evolution and gasliquid mixing mechanism through Computational Fluid Dynamics simulations. A comparative analysis of the gas-liquid flow fields, with and without the static mixer, reveals that the mixing element primarily enhances the mixing rather than the gas dispersion. Furthermore, the study employs relative standard deviation (RSD) and bubble diameter to assess the degree of the gas-liquid mixing. The results indicate that the plug-flow reactor equipped with six mixing elements achieves the optimal mixing performance (RSD 0.793 and bubble diameter 1.384 mm) with the lowest energy consumption. Compared with the reactor with four elements, the RSD decreases by 25.7 % and the bubble diameter decreases by 23.0 %. Additionally, the energy consumption is 37.6 % lower than that of the reactor with eight elements. This investigation serves as a foundation for the application of static mixers in gas-liquid mixing and provides a basis for further research in this area.