摘要
随着社会环保意识的增强,大气污染物的排放标准也日益严格,这给环保工程带来了极大的潜在市场。脱硝反应器设计作为SCR脱硝工艺中除了催化剂的另一核心,在水泥行业没有更好的催化剂被研发出来之前,想要脱硝设备的性能得到极佳的发挥,在高温高尘区布置除尘+脱硝设备已经是工程上的一个选择,而在高尘区要保证催化剂的稳定、高效运行,流场的优化必不可少。本文针对某水泥行业除尘+脱硝项目,采用CFD软件对其流场进行数值模拟,并给出导流板的优化设计方案。结果表明:在电除尘器上进气口布置合适的导流板,使得进入电场的烟气分布均匀;同时在整流格栅前添加导流板,脱硝反应器内的流场也得到了极大改善。因此,采用CFD软件数值模拟对水泥行业除尘+脱硝有着重要的意义。
Along with the enhancement of social environmental protection consciousness, the emission standard of air pollution was increasingly stricted, which brings a huge potential market to environmental protection projects. The Denitrification reactor was designed as the other core of the SCR denitrification process in addition to the catalysts. Before there is no better catalyst developed in the cement industry, the denitration equipment performance should be brought into full play. It is an engineering choice to arrange dust removal and denitrification equipment in high temperature and high dust area, and it is necessary to optimize the flow field in order to ensure the stability and efficient operation of the catalyst in the high dust area. In this paper, the flow field of a cement industry dust removal and denitrification project was simulated by CFD software, and the optimal design scheme of the diversion plate was given. The results showed that the flue gas distribution into the electric field was uniform by arranging the appropriate guide plate at the inlet of the electrostatic precipitator, and the flow field in the denitrification reactor was greatly improved by adding the diversion plate in front of the rectifier grille. Therefore, it is of great engineering significance to use CFD software numerical simulation for dust removal and denitrification in cement industry.
出处
《水泥》
CAS
2020年第1期58-62,共5页
Cement
关键词
SCR脱硝
CFD数值模拟
流场优化
导流装置
SCR denitration
CFD numerical simulation
flow field optimization
guide device
