摘要
针对某电厂700 MW对冲式燃烧锅炉水冷壁腐蚀严重问题,对该锅炉高温腐蚀产生的原因进行了分析。在现场割取了腐蚀的水冷壁管,对其腐蚀垢层进行了X射线衍射(XRD)、能量色散X射线谱(EDS)和扫描电镜(SEM)分析,结果发现腐蚀产物中主要含有ZnS、FeS、Fe_(7)S_(8)、Fe_(3)O_(4)和α-FeOOH,推定此炉主要为硫化物型高温腐蚀,并制定了该锅炉的防治措施。
Aiming at the serious problem of water wall corrosion of a 700 MW opposed-firing boiler in a power plant,the cause of high temperature corrosion of the boiler was analyzed.The corroded water-cooled wall tube was cut at the site,and the corroded scale layer was analyzed by X-ray diffraction(XRD),X-ray energy dispersive specturn(EDS)and scanning electron microscope(SEM).The results showed that the corrosion products contained ZnS,FeS,Fe 7S 8,Fe 3O 4 andα-FeOOH.It was concluded that the furnace was mainly sulphide type high temperature corrosion,and the prevention and control measures were formulated for the boiler.
作者
吴可泽
崔科杰
李帅
危日光
竹小峰
胡伯勇
何郁晟
WU Keze;CUI Kejie;LI Shuai;WEI Riguang;ZHU Xiaofeng;HU Boyong;HE Yusheng(Zhejiang Zheneng Lanxi Power Generation Co.,Ltd.,Jinhua 321000,China;School of Energy Power and Mechenical Engineering,North China Electric Power University,Baoding 071003,China;Zhejiang Zheneng Technology Research Institute Co.,Ltd.,Hangzhou 310000,China)
出处
《锅炉技术》
北大核心
2024年第1期55-58,共4页
Boiler Technology
关键词
锅炉
水冷壁
低氮燃烧
高温腐蚀
boiler
water wall
low nitrogen combustion
high temperature corrosion
