摘要
研究采用管式空气预热器锅炉的脱硝改造方案,提出将空气预热器整体更换和保留原空气预热器而改造省煤器2种方案,并对这2种方案进行了技术和经济比较。结果表明,方案2总体投资、改造工期和施工难度等均大于方案1,但运行安全性低。若锅炉低氮燃烧器改造成功,同时能较好地控制氨逃逸率,且不燃用高硫煤的情况下,可选择方案2进行脱硝改造。
The retrofit scheme for denitrification of boilers equipped with tube type air preheater was investigated.Two improved schemes(replacing the whole air preheater,keeping the air preheater but retrofitting the economizer)were proposed.Moreover,comparison on technology and economy of the two schemes was conducted.The results showed that,all of the total investment,transformation period and degree of construction difficulty but the operation safety of schemeⅠwere superior to that of schemeⅡ.If the retrofit on low NOx burner of boiler firing coal with low sulfur content was success,and the ammonia escape rate can be well controlled,the schemeⅡ was also feasible.
出处
《热力发电》
CAS
北大核心
2013年第11期167-168,171,共3页
Thermal Power Generation
关键词
锅炉
管式空气预热器
烟气脱硝
低NOX燃烧技术
氨逃逸
tubetype air preheater
denitrification
reconstruction
low NOx burning technology
ammonia escape
