中国电机工程学报2025，Vol.45Issue(13)：5163-5172,中插19,11.DOI:10.13334/j.0258-8013.pcsee.232609
基于CFD-DPM的SCR脱硝蜂窝状催化剂磨损特性研究
Investigation of Wear Characteristics of Honeycomb Catalyst for SCR Denitrification Based on CFD-DPM
摘要
Abstract
The computational fluid dynamics-discrete phase model(CFD-DPM)numerical simulation method is used to study the wear and erosion of denitrification single-channel catalyst in cement kiln SCR(selective catalytic reduction)reactor.The wear and erosion morphology of each part of the catalyst is analyzed to obtain its erosion characteristics at different locations.The results show that the collision damage of fly ash particles on the catalyst end face is the most serious,and the corner of the end face of the cement kiln SCR denitrification catalyst has the highest risk of wear and erosion,with a wear range of the first 3%of the catalyst along the way.The maximum wear rate of the catalyst wall in 2～7 m/s shows a trend of decreasing and then increasing with the increase of velocity.The overall wear rate shows a normal distribution within the range of 0～90° incident angle,and there is a wear peak at an incident angle of 45°.When the incident angle is adjusted from its peak of 45° to 5°,the average wear rate of the catalyst decreases by 56.47%.Although the wear rate of incident angle greater than 45° also shows a downward trend,its wear effect on the end face of the catalyst is greater than that of small incident angle.In engineering,the incident angle of flue gas should be maintained below 20° to reduce the wear of the front part of the catalyst caused by the incident angle of flue gas.关键词
水泥窑烟气/计算流体力学-离散元/催化剂磨损/磨损率Key words
cement kiln flue gas/computational fluid dynamics-discrete phase model(CFD-DPM)/catalyst wear/wear rate分类
资源环境引用本文复制引用
陈路敏,钱付平,朱晨,于灵涛,李海金,高艺华,吴越,黄乃金..基于CFD-DPM的SCR脱硝蜂窝状催化剂磨损特性研究[J].中国电机工程学报,2025,45(13):5163-5172,中插19,11.基金项目
安徽省重点研究与开发计划项目(202104i07020016). Key R&D Program of Anhui Province(202104i07020016). （202104i07020016）
