摘要
超(超)临界机组不采用加氧处理,容易发生给水系统流动加速腐蚀、水冷壁结垢速率高、酸洗周期短、给水系统压差升高快、高压加热器疏水调节阀堵塞、水冷壁节流孔堵塞、精处理运行周期短等一系列问题,影响机组安全运行,降低机组效率,增加机组能耗。目前,国内火力发电机组采用传统的加氧处理技术时,经常在加氧处理后出现过热器、再热器氧化皮大面积脱落,进而导致机组出现堵管、爆管事故。依托于广西某2×660 MW燃煤火力发电机组,对全保护加氧技术的设备构成及加氧前后的效果进行分析研究。
If the ultra(ultra)critical unit does not use oxygen treatment,a series of problems,such as accelerated corrosion of water flow in the water supply system,high rate of scale formation on the water wall,short acid cleaning cycle,fast rise of pressure difference in the water supply system,blockage of hydrophobic regulator valve in high pressure heater,blockage of throttle hole in water wall,short operation period of fine treatment,will easily occur,which will affect the safe operation of the unit,reduce the efficiency of the unit and increase the energy consumption of the unit.At present,when traditional oxygen treatment technology is used in domestic power generating units,oxygen treatment often results in large area peeling off of superheater and reheater oxide skin,which leads to pipe jamming and tube explosion accidents in the unit.Relying on a 2×660 MW coal-fired thermal power unit in Guangxi,the equipment composition of the full protection oxygenation technology and the effect before and after oxygenation are analyzed and studied.
作者
彭吉伟
PENG Jiwei(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250100,China)
出处
《电工技术》
2022年第22期174-176,共3页
Electric Engineering
关键词
全保护加氧
加氧处理
流动加速腐蚀
full protection oxygenation
oxygen treatment
flow accelerated corrosion
