熊斌,祝郦伟
XIONG Bin,ZHU Li-wei(Zhejiang Electrical Power Test and Research Institute

• 1:浙江省电力试验研究院

摘要(Abstract)：

某发电厂2号机组在168h连续运行期间出现锅炉多根炉管爆管现象,最后查明系垂直水冷壁内大量陈旧氧化铁脱落导致水冷壁管弯头堵塞进而引起锅炉爆管,锅炉结垢量高达1093g/m2。分析原因后,采用国内首创的催化柠檬酸低温清洗工艺成功去除了系统内残留的氧化铁。机组再次启动后,锅炉运行安全稳定。
Many water wall tubes of Unit 2 boiler exploded in a power plant during the 168 h operation.It is found that a large amount of old ferric oxide falls off vertical water wall and that causes blockage in water wall tube bend which leads to boiler tube explosion.And the amount of scale in boiler is as high as 1 093 g/m2.After the reason is found,residual iron oxide in the system is successfully removed using a pioneering lowtemperature catalytic citric acid.The unit starts again and is in safe and stable operation.

关键词(KeyWords)： 直流炉;化学清洗;高垢量;氧化铁
once-through boiler;chemical cleaning;severe scaling;ferric oxide

Abstract:

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基金项目(Foundation):

作者(Author): 熊斌,祝郦伟
XIONG Bin,ZHU Li-wei(Zhejiang Electrical Power Test and Research Institute

DOI: 10.19585/j.zjdl.2010.07.011

参考文献(References)：

• DL/T794-2001火力发电厂锅炉化学清洗导则[S].北京:中国电力出版社,2001.
• 温镇.600MW机组超临界直流锅炉的化学清洗[J].清洗世界,2008,24(3):9-12.
• 滕维忠,郭俊文,柯于进,等.华能沁北电厂2×600MW超临界机组热力系统的化学清洗[J].热力发电,2007,36(2):73-75.