燃烧调整对炉内温度分布及NO_x排放的影响  

Influence of boiler combustion regulation on furnace temperature distribution and NO_x emission

作　　者：王淅芬[1] 罗自学[2] 周怀春[2] 

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081 [2]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《武汉科技大学学报》2009年第3期318-323,共6页Journal of Wuhan University of Science and Technology

基　　金：国家863计划资助项目(2007AA05Z306)

摘　　要：采用具有三维温度场可视化监控系统的300 MW四角切圆燃煤锅炉,研究燃烧调整对炉内温度分布和NOx排放规律的影响。结果表明,总风量调整、总燃料量扰动、燃烧器摆角调整、层间燃料量调整、燃烧器不同组合以及单层燃烧器燃料调整直接影响炉内沿高度方向的温度场分布、NOx的排放量、飞灰含碳量和辐射能。NOx排放量与实时炉内温度分布密切相关,这与已逐渐成熟的NOx生成机理的研究结果一致。An experimental study was made of the influence of boiler combustion regulation on the furnace temperature distribution and the NOx emission in a 300 MW coal fired boiler, where a 3D temperature distribution visualization monitoring system is installed. The results show the regulation operational parameters （such as total air, total fuel disturbance, burner tilt angle, layer fuel adjustment, burner assembling, single layer fuel adjustment, etc ） influence the temperature distribution along furnace height, NOx emission, unburned carbon in fly ash, and radiant energy （RE）. It is also shown that the NOx emission is consistent with the mature researches on NOx formation mechanism, and the NOx emission has a high correlation with the furnace temperature distribution.

关 键 词：燃烧调整 炉内温度分布 NOx 辐射能 飞灰含碳量 

分 类 号：X506[环境科学与工程—环境工程]