300MW电站锅炉水冷壁高温腐蚀现象产生原因的探讨  

Discussion on High Temperature Corrosion of 300MW Utility Boiler Water Wall

作　　者：程超 韩建伟 任建辉[1] CHENG Chao;HAN Jian-wei;REN Jian-hui(Anhui Special Equipment Testing Institute;CHPI)

机构地区：[1]安徽省特种设备检测院 [2]哈尔滨电站设备成套设计研究所有限公司

出　　处：《电站系统工程》2023年第2期22-24,共3页Power System Engineering

摘　　要：某厂300MW燃煤机组连续两个内检周期均发现存在水冷壁高温腐蚀问题,就水冷壁高温腐蚀产生的原因进行分析探讨,对高温腐蚀形态的特征、高温腐蚀分布的区域、高温腐蚀严重程度分布进行了具体描述。从运行角度切入,对于煤粉被吹到侧墙上的原因进行分析,从腐蚀机理方面对高温腐蚀进行了具体说明,最后提出针对该锅炉如何解决水冷壁高温腐蚀问题提出合理化建议。High temperature Corrosion of water wall was found in two successive internal inspection cycles of a 300MW coal-fired unit in a plant, the characteristics of high temperature corrosion morphology, the region of high temperature corrosion distribution and the distribution of high temperature corrosion severity were described in detail. From the point of view of operation, this paper analyzes the cause of coal powder blown to side wall, explains the high temperature corrosion from the corrosion mechanism, and finally puts forward some reasonable suggestions on how to solve the high temperature corrosion problem of the boiler.

关 键 词：煤粉锅炉 水冷壁 高温腐蚀 腐蚀机理 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]