低挥发分煤低氮燃烧技术研究  

Research on Low Nitrogen Combustion using Low Volatile Coal

作　　者：黄镇宇[1] 陈乐[1] 孙振龙 杨雪峰 周俊虎[1] 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室 [2]浙江百能科技有限公司

出　　处：《电站系统工程》2012年第6期17-19,共3页Power System Engineering

摘　　要：针对某热电厂30 MW锅炉燃用低挥发分贫煤NOx排放高现象,采用低氮燃烧器改造及全炉膛SOFA空气垂直深度分级技术来降低NOx的排放。通过分析燃尽风量、炉膛氧量、给粉方式和磨煤机投运情况对NOx排放的影响,增加燃尽风量和降低炉膛氧量能降低NOx的排放,NOx排放浓度降低幅度达到53.9%,但过大的燃尽风量和过低的炉膛氧量会使锅炉运行效率降低,不利于运行。Against the high NOx emission of a thermal power plant using low volatile coal,it was applied to reduce the NOx emission through low nitrogen boiler alteration and SOFA vertical depth grading technology on the whole furnace.Through the analysis of the influence of over-fire air flow,furnace oxygen amount,the way to powder,the operation of coal pulverized,the result shows that the NOx emission can be decreased to 53.9%,however,too large over-fire air flow volume and too low furnace oxygen amount will decrease boiler operating efficiency.

关 键 词：低挥发分 NOX排放 低氮燃烧 燃尽风 炉膛氧量 

分 类 号：X701[环境科学与工程—环境工程]