摘要
应用软件Fluent17.0对32室敞开式环型阳极焙烧炉进行数值模拟分析,深入探讨了空气富氧对焙烧炉火道燃烧特性和NO排放的影响.研究结果表明:增大助燃空气中O;的体积分数,可缩短湍流火焰的长度,升高火道内炉气的整体温度,缩小局部高温区,同时也可提高火道内温度的均匀性,减小炉顶上通道的过火量,改善火焰偏流和贴壁燃烧的情况,升高出口烟温;助燃空气中O;体积分数的增大对出口残余的CH;体积分数影响较小,但出口烟气中NO的质量分数会随之增大.
Fluent17.0 software was used to simulate a 32 room open type anode baking furnace. The combustion and NO emission characteristics in a flue under different oxygen enrichment conditions were also in-depth investigated and discussed. The results show that increasing the volume fraction of O;in combustion air can shorten the length of turbulent flame, increase the overall temperature of furnace gas in the fire channel, and reduce the local high temperature area. Meanwhile, it can also improve the temperature uniformity in the fire channel, reduce the amount of fire passing on the furnace top, weaken the flame bias and wall combustion, and increase the smoke temperature at the outlet. The volume fraction of O;in combustion air has little effect on the residual volume fraction of CH;at the outlet. But it can increase the mass fraction of NO in the flue gas.
作者
周冠辰
谢非
吴德慧
孙彤彤
刘兵
Zhou Guanchen;Xie Fei;Wu Dehui;Sun Tongtong;Liu Bing(Nuclear Chemical Design and Research Institute,China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China)
出处
《材料与冶金学报》
CAS
北大核心
2022年第3期172-177,共6页
Journal of Materials and Metallurgy
基金
国家重点研发计划项目(2017YFA0700300).
关键词
阳极焙烧炉
助燃空气
富氧燃烧
温度场
anode baking furnace
combustion air
oxygen enriched combustion
temperature field
