某600 MW对冲燃烧锅炉SCR脱硝系统喷氨优化调整  

Optimization and Adjustment for Ammonia Injection in SCR Denitrification System of a 600 MW Opposed Firing Boiler

作　　者：潘娟琴 彭志福 Pan Juanqin;Peng Zhifu(Anhui Xinli Power Technology Consulting Co.,Ltd.,Hefei 230601,China;East China Electric Power Test&Research Institute,China Datang Corporation Science and Technology General Research Institute Co.,Ltd.,Hefei 230088,China;Datang Boiler and Pressure Vessel Inspection Center Co.,Ltd.,Hefei 230088,China)

机构地区：[1]安徽新力电业科技咨询有限责任公司,合肥230601 [2]中国大唐集团科学技术研究总院有限公司华东电力试验研究院,合肥230088 [3]大唐锅炉压力容器检验中心有限公司,合肥230088

出　　处：《发电设备》2023年第2期109-113,118,共6页Power Equipment

摘　　要：为解决某600 MW对冲燃烧锅炉选择性催化还原(SCR)脱硝系统喷氨支管阀门调整对负荷适应性不强的问题,提出了一种负荷兼顾调整的策略。结果表明:喷氨支管阀门经过负荷兼顾调整后,脱硝系统两侧出口氮氧化物(NOx)质量浓度相对标准偏差平均值分别下降18.52百分点、25.87百分点,喷氨体积流量平均值分别下降20.7 m^(3)/h、27.0 m^(3)/h,脱硝系统的运行得到明显改善。To solve the problem that the valve adjustment of the ammonia injection branch pipe can not meet the requirement of fully load operation of the selective catalytic reduction(SCR) denitrification system of a 600 MW opposed firing boiler, an adjustment strategy with load consideration was proposed. Results show that, through adopting the adjustment strategy with load consideration for the ammonia injection branch pipe, for the two sides of the denitrification system, the average values of the relative standard deviation of oxynitride(NOx) mass concentration are decreased by 18.52 percentage points and 25.87 percentage points, while the average values of ammonia injection volumetric flow rate are decreased by 20.7 m^(3)/h and 27.0 m^(3)/h. The operation of denitrification system has been significantly improved.

关 键 词：对冲燃烧锅炉 脱硝系统 喷氨均匀性 

分 类 号：TM621.27[电气工程—电力系统及自动化] X701[环境科学与工程—环境工程]