超超临界机组SCR 脱硝喷氨系统改造与技术优化

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中图分类号：TQ113

文献标志码：A 文章编号：1001-5922（2025）06-0120-03

Transformation and technical optimization of SCR denitrification and ammonia injection system for ultra-supercritical units

GAO Dongbo 1 ，WU Zilu1，WANG Jiaqi1，TIAN Zhiwei1，YUAN Jun ，LIU Chenyang2 （1. Jingneng Qinhuangdao Thermal Power Co.，Ltd.，Qinhuangdao 066004，Hebei China； 2. Beijing New Leaf Technology Co.，Ltd.，Beijing 100085，China）

Abstract：In view of the complex new situation of power generation faced by traditional thermal power generating units，which leads to variable and unstable operating conditions of the units，thereby causing unstable boundary conditions such as the velocity field and concentration field at the inlet of the denitration SCR，it is proposed to re-check the flow field of denitration，optimize and adjust the zoning of the ammonia injection grille，apply multi-point measurement，total quantity control strategy and zoning control strategy，etc. Carry out ultra-low emis⁃ sion renovations on coal-fired power generation units. The results show that after the transformation，the local ammo⁃ nia overspray and the overall ammonia escape are effectively reduced，and the ammonia consumption is reduced， which has a positive effect on ensuring the safe and stable operation of the unit.

Key words：denitration；ammonia escape；precise ammonia injection

某电厂2X1000MW机组，1号锅炉为东方锅炉股份 有 限 公 司 设 计 制 造 的 DG3063.81/29.3-Ⅱ1 型1 000MW 高效超超临界锅炉产品。（剩余4135字）