Study on the characters of control valve for ammonia injection in selective catalytic reduction (SCR) system of coal-fired power plant

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Yao, Che^1,2 ; Li, Tao^1 ; Zhang, Hong^1 ; Zhou, Yanming^1,2

State Grid Hunan Electric Power Corporation Research Institute, Hunan Changsha

410007, China^1

Hunan Xiangdian Test and Research Institute. CO. LTD., Hunan Changsha

410004, China^2

关键词: Ammonia injection;    Butterfly valve;    Coal-fired power plant;    Control valves;    Response surface analysis;    SCR systems;    Selective catalytic reduction systems;    Valve opening;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012169/pdf
DOI  :  10.1088/1755-1315/81/1/012169

来源: IOP

【 摘 要 】

In this paper, the characters of two control valves used for ammonia injection in SCR system are discussed. The linear/quadratic character between pressure drop/outlet flow rate and valve opening/dynamic pressure inlet are investigated using computational fluid dynamic (CFD) and response surface analysis (RSA) methods. The results show that the linear character of brake valve is significantly better than butterfly valve, which means that the brake valve is more suitable for ammonia injection adjustment than the butterfly valve.