Operation optimization of SCR system based on denitration efficiency prediction model

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Wang, Guilin^1 ; Zhou, Yigang^1 ; Zhao, Yue^1 ; Wang, Sen^1

Tianjin Electric Power Science and Research Institute, Tianjin

300384, China^1

关键词: Air distribution;    Ammonia injection;    Efficiency predictions;    NOx emissions;    Nox reduction;    Operation optimization;    Optimal values;    Oxygen content;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/3/032088/pdf
DOI  :  10.1088/1755-1315/300/3/032088

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, models for NOx emission prediction and denitration costs are built with support vector machine. The effects of the factors such as SCR inlet NOx content, unit load, oxygen content of exhaust gas, ammonia injection rate, air distribution condition, and coal type on NOx reduction are discussed. The denitration costs under different working conditions are calculated. The ammonia injection rate is optimized with genetic algorithm. It can be shown that the actual ammonia injection rate is 1%-3.5% lower than the optimal value.