燃煤电厂超低排放脱硝设施运行问题及应对措施

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中图分类号：X773 文献标志码：A 文章编号:1003-5168（2025）16-0089-06

DOI: 10.19968/j.cnki.hnkj.1003-5168.2025.16.018

Operation Problems and Countermeasures of Ultra-Low Emission Denitrification Facilitiesin Coal-Fired PowerPlants

ZOU Peng WANG Liang WANG Feng GUO LeiLIU TinganYU WeizhenWU Wei (Zhongdian Huachuang (Suzhou) Electric Power Technology Research Co.,Ltd., SuZhou , China)

Abstract:[Purposes] To analyze the issues related to NOxcontrol during the ultra-low emission retrofit of coal-fired power plants,providing a reference for the safe,stable,and environmentally friendly operation of units.[Methods] Practical problems encountered with the denitrification facilitiesafter ultra-low emission retrofit were summarized and deeply analyzed.[Fingdings] The phenomenon of ammonia slip is particularly prominent after ultra-low emission retrofit,and its occurrence mechanism is strongly related to factors such as catalyst performance degradation,unit load fluctuations,control of nitrogen oxide emission concentrations,and the reliability of online ammonia slip monitoring instruments.Additionally,it also has significant links to low-nitrogen combustion technology and equipment maintenance.[Conclusions]Based on the operational characteristicsand actual working conditions of the power plant, establishing a comprehensive management system and formulating diffrentiated comprehensive treatment planscan effectivelyachieve reliable operation of theunit.

Keywords:ultra-low emission;denitrification facilities;operation problems

0 引言

燃煤电厂超低排放技术改造在显著降低烟气污染物排放量的同时，也引发了脱硝系统运行异常的关联性问题。（剩余9653字）