摘要
在一台93 kW卧式单角炉上进行了气体燃料再燃的详细试验研究,并采用包含再燃机理的一氧化氮子模型耦合三维煤粉燃烧数值模拟程序对再燃工况进行了数值模拟.试验和模拟结果显示,在最佳再燃工况下可降低一氧化氮排放量达50%以上.数值模拟对炉内温度、氧及NO浓度分布预报与测量数据基本一致.研究结果表明,模拟采用的一氧化氮子模型能够经济而有效地模拟气体燃料再燃过程中一氧化氮浓度变化,该模型为准确模拟实际气体燃料再燃过程提供了一种有效方法.
The experiments on gaseous fuel rebuming were performed in a 93 kW laboratory single-burner furnace. A nitric oxide submodel including reburning mechanism was incorporated into a 3-D coal combustion model to predict the nitric oxide reduction by gaseous fuel reburning. Both the measurements and predictions show that nitric oxide emissions can be reduced by over 50% in the optimized reburning case. The profile comparisons reveal that the predicted temperature, oxygen concentration, and nitric oxide concentration are in overall good agreement with the measurements. The results indicate that the present nitric oxide submodel depicts quite well the observed behaviour of nitric oxide annihilation in the reburning process, and this computationally economic model is regarded as a useful method to simulate gaseous fuel reburning process in practical combustors.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2009年第5期417-422,共6页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50721005
50525619)
国家高技术研究发展计划(863)资助项目(2007AA05Z308)
关键词
气体燃料
再燃
一氧化氮
卧式单角炉
gaseous fuel
reburning
nitric oxide
single-burner furnace
作者简介
苏胜（1977-），男，博士，susheng_2003@163．com．
通讯作者：向军，xiangjun@mail．hust．edu．cn．
