| 超超临界机组锅炉水冷壁节流孔板结垢的处理 |
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| 引用本文： | 邵天佑.超超临界机组锅炉水冷壁节流孔板结垢的处理[J].热力发电,2010,39(3). |
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| 作者姓名： | 邵天佑 |
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| 作者单位： | 华能玉环电厂,浙江,玉环,317604 |
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| 摘 要： | 介绍了玉环电厂超超临界1 000 MW机组锅炉水冷壁结构特点,分析水冷壁节流孔板Fe3O4结垢堵塞造成超温及爆管现象,认为热力系统中Fe含量均值的变化是事故的主要原因。对此,提出以下预防措施:(1)机组投产前进行化学清洗;(2)给水采用加氧处理方式;(3)机组运行后进行化学清洗。另外,通过加强运行中铁离子监测,锅炉停炉采用带压放水,起动时适当排污,以及对锅炉左右侧墙加装温度测点等方法,减少了锅炉爆管,提高了机组运行的安全可靠性。
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| 关 键 词： | 超超临界 1000 MW机组 锅炉 水冷壁 节流孔板 结垢 |
SCALING ON THROTTLE PLATE OF THE WATER-WALL IN BOILER FOR ULTRA-SUPERCRITICAL UNIT AND DISPOSAL THEREOF |
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| SHAO Tian-you.SCALING ON THROTTLE PLATE OF THE WATER-WALL IN BOILER FOR ULTRA-SUPERCRITICAL UNIT AND DISPOSAL THEREOF[J].Thermal Power Generation,2010,39(3). |
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| Authors: | SHAO Tian-you |
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| Affiliation: | SHAO Tian-youHuaneng Yuhuan Power Plant,Yuhuan 317604,Zhejiang Province,PRC |
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| Abstract: | The structural features of water-wall in boilers for ultra-supercritical 1000 MW unit in Yuhuan Power Plant have been presented,the phenomenon of over-temperature and tube-burst resulted from blockage of Fe3O4 scaling on the throttle plate of water-wall being analysed.It is believed that the cause leading to accident is the average value variation of iron content in the thermodynamic system,and preventive measures being put forward as in the following:(1)before putting unit into operation,chemical cleaning ... |
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| Keywords: | Fe3O4 |
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