基于CO/O2在线监测的锅炉燃烧优化系统开发与试验研究  

Development and Experimental Research of Boiler Combustion Optimization System Based on CO/O 2 Online Monitoring

作　　者：史义明 姚友工 蔡正春 常寿兵 江紫薇 吴运凯 任强强 苏胜[3] 向军[3] SHI Yiming;YAO Yougong;CAI Zhengchun;CHANG Shoubing;JIANG Ziwei;WU Yunkai;REN Qiangqiang;SU Sheng;XIANG Jun(Huaneng International Power Co.,Ltd.,Haimen Power Plant,Shantou,Guangdong 515000,China;Walsn Energy Technology(Langfang)Co.,Ltd.,Langfang,Hebei 065000,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]华能国际电力股份有限公司海门电厂,广东汕头515000 [2]沃森能源技术(廊坊)有限公司,河北廊坊065000 [3]煤燃烧国家重点实验室(华中科技大学),湖北武汉430074

出　　处：《广东电力》2020年第11期135-142,共8页Guangdong Electric Power

基　　金：中国华能集团科技项目(HNKJ201901HM)。

摘　　要：为平衡燃煤电站锅炉低氮排放与高效燃烧之间的矛盾,针对某电厂1000 MW前后墙对冲燃烧锅炉,基于尾部CO/O 2双参量在线监测技术,建立了不同典型运行负荷下,尾部CO体积分数与锅炉效率和NO x质量浓度的关联模型,并以综合经济指标为优化依据,对锅炉历史运行数据进行深入分析与挖掘,构建了锅炉尾部CO/O 2双参量在线监测的锅炉燃烧优化系统,实时给出锅炉燃烧优化调整建议,并对该电厂典型运行负荷工况进行了现场试验验证。研究结果表明:在燃烧优化系统的指导下,通过调节尾部CO体积分数至优化值,锅炉在各个典型运行负荷下均实现了锅炉效率的提高和NO x质量浓度的降低,保证锅炉高效率运行的同时满足低氮排放要求,极大地提高了电厂运行的经济性。To balance the contradiction between low nitrogen emission and high efficiency combustion of the coal-fired power plant boilers,this paper establishes the correlation models of tail CO volume fraction with boiler efficiency and NO x concentration under different typical operating loads based on tail CO/O 2 dual-parameter online monitoring technology for a 1000 MW boiler with opposed front and rear walls.Based on comprehensive economic indicators,it analyzes and excavates the historical operating data of the boiler in depth,and constructs a boiler combustion optimization system with CO/O 2 dual-parameter online monitoring data at the tail of the boiler which can give some suggestions for boiler combustion optimization and adjustment in real time.It also carries out field tests to verify the typical operating load conditions of the power plant.The research results show that under the guidance of the combustion optimization system,it is able to improve the boiler efficiency and reduce NO x mass fraction by adjusting the tail CO volume fraction to the optimized value under each typical operating load,as well as ensure high efficiency operation of the boiler while meeting the requirement of low nitrogen emissions and greatly improve the economics of power plant operation.

关 键 词：CO在线监测 锅炉效率 NO x生成 燃烧优化 

分 类 号：TM621.2[电气工程—电力系统及自动化] TK227.1[动力工程及工程热物理—动力机械及工程]