Please wait a minute...
Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2021, Vol. 3 Issue (4): 339-346    DOI: 10.1007/s42768-021-00082-z
    
Optimizing flow field in an SCR system of a 600 MW power plant: effects of static mixer alignment style
Optimizing flow field in an SCR system of a 600 MW power plant: effects of static mixer alignment style
 全文: PDF 
摘要： The fluid flow in a selective catalytic reduction (SCR) system of a 600 MW power station is optimized using the numerical simulation method in this work. Given that guide plates and straightening gratings are properly installed, the relative standard deviation (Cv) of velocity related to the inlet of an ammonia injection grid (AIG) and catalysts satisfy the engineering demand of?<15%, suggesting that a relatively uniform velocity field is obtained. The in-line arrangement of static mixers strengthens the disturbance of fluid, promoting the mixing of reductant NH3 with flue gas. The NH3 mole fraction Cv value correlated to the inlet of catalysts drops to ca. 3.5%, which is lower than that in the cases when the mixers are aligned in a staggered style. These results indicate that a solid foundation is achieved for the effective abatement of NOx in practical applications.
关键词： Selective catalytic reduction;  Flow field;  Static mixers;  Alignment style;  Relative standard deviation    
Abstract: The fluid flow in a selective catalytic reduction (SCR) system of a 600 MW power station is optimized using the numerical simulation method in this work. Given that guide plates and straightening gratings are properly installed, the relative standard deviation (Cv) of velocity related to the inlet of an ammonia injection grid (AIG) and catalysts satisfy the engineering demand of?<15%, suggesting that a relatively uniform velocity field is obtained. The in-line arrangement of static mixers strengthens the disturbance of fluid, promoting the mixing of reductant NH3 with flue gas. The NH3 mole fraction Cv value correlated to the inlet of catalysts drops to ca. 3.5%, which is lower than that in the cases when the mixers are aligned in a staggered style. These results indicate that a solid foundation is achieved for the effective abatement of NOx in practical applications.
Key words: Selective catalytic reduction    Flow field    Static mixers    Alignment style    Relative standard deviation
出版日期: 2021-11-17
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
Dong YeXiaoxiang WangHaining Wang

引用本文:

Dong YeXiaoxiang WangHaining Wang . Optimizing flow field in an SCR system of a 600 MW power plant: effects of static mixer alignment style. Waste Disposal & Sustainable Energy, 2021, 3(4): 339-346.

链接本文:

https://www.zjujournals.com/wdse/CN/10.1007/s42768-021-00082-z    或    https://www.zjujournals.com/wdse/CN/Y2021/V3/I4/339

[1] Dong YeXiaoxiang WangHaining Wang. New insights into the relationships between performance and physicochemical properties of FeOx–NbOx mixed oxide catalysts for the NH3-SCR reactions[J]. Waste Disposal & Sustainable Energy, 2021, 3(2): 97-106.