Cause analysis and suggestion of urea consumption in denitrification system of coal-fired power plant

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Zhang, Xueying^1 ; Dong, Ruifeng^1 ; Guo, Yang^1 ; Wang, Fangfang^1 ; Yang, Shuo^1

Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou, China^1

关键词: Ammonia injection;    Analysis and suggestions;    Coal fired units;    Coal-fired power plant;    Laboratory analysis;    Operation reliability;    Operation system;    Technical specifications;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032050/pdf
DOI  :  10.1088/1755-1315/121/3/032050

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In the daily operation of many power plants, the urea consumption of denitration system is much more than normal. Therefore, the process of site testing and laboratory analysis are carried out. Several suggestions are given out. (1) The position of sampling hole on the exit flue of denitrification system should be redesigned. (2) The denitrification optimization and adjustment should be carried out based on the technical specifications for the operation system. (3) The flue gas CEMS system for single point sampling should be transformed into two or three point sampling mode. (4) When the coal - fired unit is shutting down, examine the ammonia injection and nozzle branch, in order to improve the operation reliability of denitration system.