| 超临界直流炉首次检修化学检查共性问题及对策 |
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| 引用本文： | 张小霓,吴文龙,李长鸣,谢慧. 超临界直流炉首次检修化学检查共性问题及对策[J]. 电力建设, 2010, 31(8): 71-74. DOI: 10.3969/j.issn.1000-7229.2010.08.017 |
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| 作者姓名： | 张小霓 吴文龙 李长鸣 谢慧 |
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| 作者单位： | 河南电力试验研究院,郑州市,450052;河南电力试验研究院,郑州市,450052;河南电力试验研究院,郑州市,450052;河南电力试验研究院,郑州市,450052 |
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| 摘 要： | 总结了河南省8 台采用给水还原性全挥发处理方式的600 MW超临界直流炉机组首次检修化学检查中发现的共性问题：水冷壁、省煤器的结垢速率较高；汽轮机叶片积盐速率较高，沉积物成分复杂；机组停运揭缸后低压缸叶片有锈蚀。针对以上问题，分析了其原因，并提出了解决问题的建议。
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| 关 键 词： | 超临界机组 直流炉 给水处理 结垢 积盐 腐蚀 |
Discussion on Chemistry Check-up of Supercritical Once-through Boiler |
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| ZHANG Xiao-ni,WU Wen-long,LI Chang-ming,XIE Hui. Discussion on Chemistry Check-up of Supercritical Once-through Boiler[J]. Electric Power Construction, 2010, 31(8): 71-74. DOI: 10.3969/j.issn.1000-7229.2010.08.017 |
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| Authors: | ZHANG Xiao-ni WU Wen-long LI Chang-ming XIE Hui |
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| Affiliation: | (Henan Electric Power Research Institute,Zhengzhou 450052,China) |
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| Abstract: | The chemistry check-up was carried out in the first maintenance of eight AVT treatment supercritical once-through boiler 600 MW units in Henan,and some common problems were found,including high scaling rate of the water-cooled wall and coal economizer,high salt deposition rate on the turbine blades,complex composition of deposits,and blade crusting corrosion of low-pressure cylinder.The causes for the problems are analyzed and relevant countermeasures are proposed. |
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| Keywords: | supercritical unit once-through boiler feed water treatment scale formation salt deposition corrosion |
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