文献类型：期刊文献

英文题名：Mass Transfer-Reaction Model for Sodium Sulfide Wet Air Oxidation and Reactor Optimization

作者：Bi, Jinghao[1];Xu, Xiao[1];Ding, Yuhao[1];Wang, Yun[1];Li, Xinpeng[1];Jin, Wenjing[1];Zhou, Tong[2];Yang, Qiang[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China;[2]SINOPEC Dalian Res Inst Petr & Petrochem Co Ltd, Dalian, Peoples R China

年份：2026

卷号：49

期号：1

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;EI(收录号：20260319911554);WOS:【SCI-EXPANDED(收录号:WOS:001659163400001)】；

语种：英文

外文关键词：mass transfer; petrochemical spent caustic; reactor design optimization; wet air oxidation

摘要：This study presents a multiphase transfer-reaction model integrating reaction kinetics, hydrodynamics, and gas-liquid mass transfer to simulate sodium sulfide's non-catalytic (WAO) and catalytic (CWAO) wet air oxidation in bubble column reactors. Developed to optimize reactor parameters under 373-423 K and 3.28 MPa, the model addresses high chemical oxygen demand (COD) in petrochemical spent caustic. For WAO, a 1.6 m-diameter, 12.5 m-high reactor with 0.04 m/s superficial gas velocity achieves 95% COD degradation at 423 K. FeSO4-catalyzed CWAO reduces reactor size, shortens residence time (same efficiency), and boosts oxygen utilization. Compared with computational fluid dynamic (CFD)-reaction coupling, this empirical model cuts computational cost while retaining accuracy, fitting industrial scale-up. This study provides a sustainable framework for the design of spent caustic oxidation reactors, balancing environmental compliance with process efficiency.