对冲锅炉冷灰斗高温腐蚀速率高可靠性检测方法  

High Reliability Detection Method for High-Temperature Corrosion Rate of Cold Ash Hopper in Hedging Boiler

作　　者：钱文新 尹宝聚 QIAN Wen-xin;YIN Bao-ju(Chn Energy Yongzhou Power Generation Co.,Ltd.,Yongzhou 425913)

机构地区：[1]国家能源集团永州发电有限公司,永州425913

出　　处：《环境技术》2024年第9期57-62,86,共7页Environmental Technology

摘　　要：由于对冲锅炉冷灰斗的内部温度往往受到吸热偏差等因素的影响,与测定温度之间存在较大的偏差,进而导致高温腐蚀速率的检测结果可靠性不高。为了缓解这一问题,提出了对冲锅炉冷灰斗高温腐蚀速率高可靠性检测方法。根据对冲锅炉内部的湍流状态,解析冷灰斗的高温腐蚀机理。分别量化计算冷灰斗内部温度的热偏差系数和烟气放热系数对温度值进行修正,得到相应的等效热流密度参数,由此求解冷灰斗温度与高温腐蚀速率的相关性关系。在此基础上,结合灰度关联法分析计算得出高温腐蚀速率检测结果。经过实践测试验证了该方法所得出的检测结果有着较小的标准差,可靠性较高,满足了对冲锅炉运行状态检测的实际需求。Due to the influence of factors such as heat absorption deviation on the internal temperature of the cold ash hopper of the hedging boiler,there is a significant deviation between the measured temperature and the measured temperature,which leads to low reliability of the detection results of high-temperature corrosion rate.In order to alleviate this problem,a high reliability detection method for high-temperature corrosion rate of the cold ash hopper of the hedging boiler has been proposed.Analyze the high-temperature corrosion mechanism of the cold ash hopper based on the turbulent state inside the boiler.Quantitatively calculate the thermal deviation coefficient and flue gas heat release coefficient of the internal temperature of the cold ash hopper to correct the temperature value,obtain the corresponding equivalent heat flux density parameters,and solve the correlation between the temperature of the cold ash hopper and the high-temperature corrosion rate.On this basis,the detection results of high-temperature corrosion rate were analyzed and calculated using the grayscale correlation method.Through practical testing,it has been verified that the detection results obtained by this method have a small standard deviation and high reliability,meeting the practical needs of detecting the operating status of hedging boilers.

关 键 词：高温腐蚀 腐蚀速率 腐蚀速率检测 对冲锅炉 冷灰斗 高可靠性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]