崔艳华. Stereo-staged Combustion with Reduced NOx Emission of Boiler in Power Plants[J]. 2014, (3): 84-86.DOI:
电厂锅炉立体分级低氮燃烧改造
摘要
某自备电厂#1、#2机组锅炉燃烧器NOx排放值在500
6
00 mg/Nm3之间
为达到国家标准
采用水平与垂直方向分级而形成立体分级燃烧技术进行改造。改造后经测试
在300 MW负荷
省煤器出口含氧质量分数ω(O2)
<
3.5%的前提下
NOx排放≤350 mg/Nm3[ω(O2)=6%
]
飞灰含碳量不大于改造前的水平
改造效果显著。
Abstract
The boilers of the #1 and #2 units in the power plant
whose NOxemission level are between 500 mg/Nm3 and 600mg/Nm3
have been improved by using staged combustion at horizontal and vertical directions. After the improvement
the NOxemission is successfully reduced to less than 350 mg/Nm3 under 300 MW load with ω(O2) <3.5% outlet oxygen level.Meanwhile
the carbon contents of fly ashes are no more than previous combustors. These results suggest that this technology could significantly reduce the NOxemissions in boiler combustion.