300 MW锅炉燃烧系统优化与NO_(x)生成的影响研究  

Research on the impact of 300 MW boiler combustion system optimization and NO_(x) generation

作　　者：高纪遥 赵文霞[1] GAO Jiyao;ZHAO Wenxia(Hebei University of Science and technology,Shijiazhuang 050000,China)

机构地区：[1]河北科技大学,河北石家庄050000

出　　处：《粘接》2025年第1期129-133,共5页Adhesion

摘　　要：为使锅炉燃烧实现既节能又环保,研究了各种燃烧工况变化对锅炉热效率和NO_(x)生成量的影响,以某300 MW等级亚临界W型火焰锅炉为研究对象,通过锅炉燃烧调整得到运行试验数据。结果表明,SCR入口NO_(x)平均浓度和热效率随锅炉运行氧量的提高都呈现升高的趋势;随着燃尽风门的逐步关小,SCR入口平均NO_(x)浓度增加,但热效率先增后降低;同负荷下,开4台磨煤机相比开3台磨煤机热效率高,但SCR入口NO_(x)浓度也偏高;拱上下风门的调整均会增加NO_(x)生成量,在一定范围内,增加拱下风门开度可保障锅炉热效率不低于设计值。In order to achieve both energy saving and environmental protection in boiler combustion,the influence of various combustion conditions on boiler thermal efficiency and NO_(x) generation was studied.A 300 MW subcritical W-type flame boiler was taken as the research object,and the operation test data were obtained through boiler combustion adjustment.The results showed that the average concentration of NO_(x) and thermal efficiency of SCR inlet increased with the increase of boiler oxygen.With the gradual closing of the burn-out damper,the average NO_(x) concentration at the SCR inlet increased,but the thermal efficiency increased first and then decreased.Under the same load,the thermal efficiency of running four mills was higher than that of running three mills,but the NO_(x) concentration of SCR inlet was also higher.The adjustment of the arch damper increased the amount of NO_(x) generation.Within a certain range,increasing the opening of the arch damper could ensure that the boiler thermal efficiency is not lower than the design value.

关 键 词：工业锅炉 燃烧调整 配风 控制NO_(x) 保障热效率 

分 类 号：TQ534[化学工程—煤化学工程]