摘要
采用CFD数值模拟方法对某电业公司150 MW机组配套电袋复合除尘器流场进行了分析研究,通过比较模拟结果,确定了电袋复合除尘器流场的优化设计方案。结果表明:在进口烟道弯头内设置导流板,调整进口烟箱内孔板上的导流叶片及第3层孔板开孔率,电袋结合处设置孔板,可以使电场进口断面速度相对标准偏差、滤袋迎风面气流速度、滤袋单元流量分配偏差及每个袋区各滤袋流量的相对标准偏差均达到设计要求,为电袋复合除尘器的设计提供参考依据。
Flow field in the electrostatic-fabric integrated precipitator （EFIP） of a 150 MW unit was investigated by numerical simulation, and the optimized design was obtained. A comparison of the numerical simulation re- sults reveals that installing guide plates in the inlet pipe, adjusting the guide vanes of the perforated plates and the porosity of the third perforated plate in the inlet nozzle, and adding a perforated plate in the conjunction of the electric and bags zone have a significant positive effect on the flow field. After optimizing, the flow distribu- tion in the inlet of the electric field, the gas velocity at the windward side of the filtering bags, the gas flow devi- ation of the six bag units, and the relative root mean square value of each bag＇ s flow in per bag unit satisfy the design requirements for flow field. This study can provide a reference for designing the electrostatic-fabric inte- grated precipitator.
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第5期2897-2902,共6页
Chinese Journal of Environmental Engineering
基金
国家高技术研究发展计划(863)项目(2013AA065004)
关键词
电袋复合除尘器
数值模拟
流场优化
electrostatic-fabric integrated precipitator
numerical simulation
optimization
