结垢严重的锅炉本体除垢实践  

Descaling Practice of Boiler Body With Serious Scaling

作　　者：于智勇 YU Zhi-yong(Yueyang Changling Equipment Research Institute Co.,Ltd.Yueyang 414000,China)

机构地区：[1]岳阳宇翔科技有限公司,湖南岳阳414000

出　　处：《全面腐蚀控制》2023年第3期54-57,共4页Total Corrosion Control

摘　　要：某自备电厂65t/h干熄焦锅炉,水冷壁管平均垢量高达3539.6g/m2,远大于规定的清洗上限。文章介绍了通过水冲洗、二次碱洗+酸洗、漂洗和钝化的工艺,成功将垢层去除,对以硫酸盐和硅酸盐为主、结垢严重的锅炉本体,提出了可行性的解决办法,为同类型结垢严重、难溶垢的锅炉本体化学清洗提供了参考。The average scale of the water wall tube of 65t/h coke quenching boiler in a self-owned power plant is as high as 3539.6g/m2,which is much higher than the specified cleaning upper limit.The paper INTRODUCES the process of water washing,secondary alkali washing+pickling,rinsing and passivation,which successfully removes the scale layer,and puts forward feasible solutions for the boiler body mainly with sulfate and silicate and serious scaling,which provides a reference for the chemical cleaning of the same type of boiler body with serious scaling and insoluble scaling.

关 键 词：锅炉 硅酸盐垢 硫酸盐垢 碱洗 酸洗 

分 类 号：TE88[石油与天然气工程—油气储运工程]