300 MW机组锅炉尾部受热面的改造  

Retrofit of Tail-Heating Surface of 300 MW Boilers

作　　者：赵华 茅建波[2] 孙迪辉 

机构地区：[1]浙江浙能长兴发电有限公司,浙江湖州313100 [2]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《浙江电力》2017年第6期55-58,79,共5页Zhejiang Electric Power

摘　　要：某发电厂300 MW亚临界机组锅炉低氮燃烧器改造后,存在主/再热蒸汽温度超温频繁、过热器减温水量大、SCR脱硝装置入口烟温高等问题。通过减少锅炉部分低温过热器、增加1组光管省煤器的尾部烟道受热面改造,彻底解决了上述问题,提高了机组运行的安全性和经济性,取得了良好的节能降耗效果。After retrofit of low NOX burner of 300 MW subcritical boilers in a power plant, there are some problems such as overheated main steam and reheat steam,large quantity of desuperheating water and over-heated inlet gas temperature of SCR denitration device. By reduction of low-temperature superheater and in-stallation of a group of plain tube type economizer on the tail-heating surface, the aforementioned problems are solved. Therefore, operation safety and economy of the boilers are improved, and ideal effect of energy saving and consumption reduction is achieved.

关 键 词：省煤器 受热面 SCR脱硝 减温水 改造 

分 类 号：TM621.2[电气工程—电力系统及自动化]