文献类型：期刊文献

英文题名：Structure-induced flow modulation in static mixer plug flow reactors for gas-liquid contact intensification in ozone-based oxidation

作者：Yuan, Shanzhi[1];Wang, Lvliang[1];Yang, Xuejing[2,3];Qian, Yuanyuan[4];Xu, Yanxia[1]

机构：[1]East China Univ Sci & Technol, Key Lab Environm Risk Assessment & Control Chem Pr, Minist Ecol & Environm, 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 Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[4]McWong Environm Technol Corp Ltd, Shanghai 200135, Peoples R China

年份：2026

卷号：220

外文期刊名：CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

收录：;EI(收录号：20255319813330);WOS:【SCI-EXPANDED(收录号:WOS:001642385600001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 52470074) and Shanghai Pujiang Programme (Grant No. 21PJD016) . We also thank Elsevier Language Editing Service for their professional language editing of the manuscript.

语种：英文

外文关键词：Static mixer plug flow reactor; Gas-liquid mixing; Process intensification; Computational fluid dynamics; Ozone-based oxidation process

摘要：Limited ozone solubility hampers gas-liquid mass transfer in ozone-based advanced oxidation processes (AOPs), particularly in continuous flow reactors. Herein, high-resolution computational fluid dynamics simulations were integrated with a multi-objective optimisation framework to investigate the influence of geometric parameters on hydrodynamics, bubble dynamics and energy consumption in a static mixer plug flow reactor. Suboptimal gas inlet configurations induced buoyancy-driven gas holdup and backflow, substantially impairing dispersion and mixing uniformity, as indicated by the relative standard deviation (RSD) of gas-phase and bubble size distributions. Optimised inlet position and diameter promoted early fluid bifurcation and shear-induced bubble breakup, improving micro- and macro-mixing. Twisting elements generated localised velocity peaks and strong pressure gradients, efficiently converting pressure into kinetic energy and yielding radially stratified, symmetrical flows, facilitating gas-liquid contact. The number of mixing elements and downstream zone length governed mixing quality and pressure drop, and inlet parameters critically regulated bubble characteristics. The optimised configuration achieved an RSD of 0.790 and a pressure drop of 6435 Pa, reducing mixing heterogeneity and energy consumption by 13.6% and 18.1%, respectively, and yielding a favourable balance between mixing efficiency and energy use. This study establishes a quantitative structure-flow-performance relationship, providing a foundation for scalable, energy-efficient multi-phase reactor design for ozone-based AOPs, along with practical strategies for process intensification and sustainable water treatment.