300 MW机组在线自动喷氨调平系统的研发与应用  

Development and Application of an Online Automatic Ammonia Injection Adjusting System in a 300 MW Unit

作　　者：张志强 曲同良 石德胜 安冬冬 李军 朱晓磊 Zhang Zhiqiang;Qu Tongliang;Shi Desheng;An Dongdong;Li Jun;Zhu Xiaolei(Huadian Qingdao Power Generation Co., Ltd., Qingdao 266031, Shandong Province, China;Technical Service Branch of Huadian International Power Co., Ltd., Jinan 250000, China;Shanghai Power Equipment Research Institute Co., Ltd., Shanghai 200240, China)

机构地区：[1]华电青岛发电有限公司,山东青岛266031 [2]华电国际电力股份有限公司技术服务分公司,济南250000 [3]上海发电设备成套设计研究院有限责任公司,上海200240

出　　处：《发电设备》2022年第3期202-206,共5页Power Equipment

摘　　要：开发在线自动喷氨调平系统调整喷氨阀的开度,将该系统在某300 MW亚临界机组锅炉的烟道进行应用。结果表明:应用在线自动喷氨调平系统后,选择性催化还原(SCR)脱硝系统出口氮氧化物(NO_(x))质量浓度相对标准偏差大幅降低,空气预热器阻力长期稳定在设计值附近,有利于机组运行的经济性和安全性。An online automatic ammonia injection adjusting system was developed,so as to adjust the opening of the ammonia injection valve.The system was applied to the flue gas duct in a 300 MW unit boiler.Results show that,with the application of the online automatic ammonia injection adjusting system,the relative standard deviation of oxynitride(NO_(x))mass concentration at the selective catalytic reduction(SCR)denitration system outlet is greatly reduced,while the resistance of the air preheater can be maintained in the design value for a long time,which is benefit for the economy and safety of the unit operation.

关 键 词：火电机组 喷氨调平 NO_(x) 空气预热器 

分 类 号：TM621.27[电气工程—电力系统及自动化]