摘要
对高温腐蚀发生的原因及影响因素进行了分析,针对某600 MW四角切圆燃烧锅炉提出了防止高温腐蚀的燃烧器优化方案,并对优化方案进行了数值模拟研究。研究表明:针对挥发分较低、含硫量较高的贫煤,减小偏置辅助风的偏转角度,采用反吹式水平浓淡煤粉喷嘴,均有利于煤粉快速着火燃尽,并减轻贴壁处还原性气氛,防止水冷壁高温腐蚀。
The cause and influencing factors of high temperature corrosion were analyzed. A 600 MW tangential fired boiler burners were optimized to reduce the risk of high temperature corrosion. The optimization scheme were studied with numerical analysis method. Results show that for high sulfur, low volatile coal, both reducing the deflection angle and adopting Louver Horizontal Bias Pulverized coal burner can promote coal powder ignition and burning which is important to avoid high temperature corrosion.
出处
《锅炉技术》
北大核心
2016年第4期48-52,共5页
Boiler Technology
基金
国家科技支撑计划资助项目(2015BAA05B02)
关键词
电站锅炉
高温腐蚀
燃烧器优化
数值模拟
utility boiler
high temperature corrosion
burner optimization
numerical analysis
