Gas flow in a new type of rotating packed bed with gas baffles

被引：0

作者：

Cheng, Ting ^{[1
,2
]}

Miao, Fuming ^{[1
]}

Shang, Ruize ^{[1
]}

Liu, Youzhi ^{[1
]}

Jiao, Weizhou ^{[1
]}

机构：

[1] North Univ China, Sch Chem & Chem Engn, Shanxi Prov Key Lab Chem Proc Intensificat, State Key Lab Coal & CBM Comining, Taiyuan 030051, Peoples R China

[2] Taiyuan Inst Technol, Dept Environm & Safety Engn, Taiyuan 030008, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2025年 / 307卷

基金：

中国国家自然科学基金;

关键词：

Rotating packed bed with gas baffles; Flow characteristics; CFD; Wastewater degradation; PHASE FLOW;

D O I：

10.1016/j.ces.2025.121353

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Cross-flow rotating packed bed is a popular reactor for process intensification, but it has an inherent disadvantage that the gas residence time is very short. A novel gas baffle-rotating packed bed (GB-RPB) was introduced to prolong the gas residence time, and the gas flow in GB-RPB was simulated using a three-dimensional computational fluid dynamics model. The realizable k-epsilon model was used for the prediction of turbulence and a porous media model was used for the packing. The effects baffle characteristics on gas dynamics and turbulence within GB-RPB were investigated. It was found that mass transfer was significantly enhanced due to the vortex flow pattern and intensified turbulence around baffles. Specifically, GB-RPB with inner baffles and outer baffles spaced 20 mm apart (1/3 rotor height) significantly extended the gas residence time, so that the COD degradation rate in pesticide-laden wastewater was increased by over 10 % compared to conventional RPB.

引用

页数：14

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