某1000MW燃煤锅炉掺烧污泥安全经济分析  

Safety and Economic Analysis of Sludge Mixed Combustion in a 1000 MW Coal-fired Boiler

作　　者：卢健 赵冬建 LU Jian;ZHAO Dongjian(Shanghai Shangdian Caojing Power Generation Co.,Ltd.,Shanghai 201507,China;Shanghai Minghua Power Technology Co.,Ltd.,Shanghai 200090,China)

机构地区：[1]上海上电漕泾发电有限公司,上海201507 [2]上海明华电力科技有限公司,上海200090

出　　处：《发电设备》2025年第1期14-18,共5页Power Equipment

摘　　要：某1000MW燃煤锅炉长期掺烧污泥和褐煤,锅炉效率有所降低,停炉检修时发现燃烧器附近的水冷壁和一级过热器管屏存在结渣情况.为了提高锅炉效率和解决结渣问题,开展了常用煤种与常用污泥的燃烧特性试验,并且结合制粉系统和燃烧调整试验,优化炉内燃烧工况.结果表明:优化后的燃烧工况能有效实现炉膛燃烧“风包粉”,成功消除了水冷壁区域和一级过热器管屏的结渣问题.此外,针对锅炉不同负荷工况,提出了基于二次风配比和过量空气系数控制的污泥掺烧策略,以进一步提高锅炉效率.A 1000 MW coal-fired boiler experienced a decrease in efficiency due to the long-term mixed combustion of sludge and lignite.During boiler inspections,slagging was found on the water walls near the burners and the first-stage superheater tube panels.To improve the boiler efficiency and solve the problem of slagging,the combustion characteristic test of common coal and sludge was carried out,and the combustion condition in the furnace was optimized by combining the pulverization system and combustion adjustment test.Results show that,the optimized combustion condition can effectively realize the combustion of"wind-wrapped powder"in the furnace,and successfully eliminate the slagging problem in the water wall area and first-stage superheater tube panels.Furthermore,for the 1000 MW coal-fired boiler under various load conditions,a sludge mixed combustion strategy based on secondary air distribution and excess air coefficient control was proposed to further improve boiler efficiency.

关 键 词：燃煤锅炉 污泥 掺烧 受热面结渣 锅炉效率 

分 类 号：TM621[电气工程—电力系统及自动化] TK16[动力工程及工程热物理—热能工程]