中文摘要：

针对大型燃煤锅炉高温受热面沿宽度方向受热不均从而引发受热面超温的问题,以某600 MW超临界燃煤锅炉末级过热器为研究对象,结合高温受热面蒸汽侧氧化膜生长预测模型,通过热偏差计算,分析了氧化膜的生长对金属壁温的影响。结果表明：蒸汽侧氧化膜的生长引起管壁温度不同程度地升高,严重的可能导致过热器局部区域超温运行,从而降低了金属高温蠕变断裂寿命,因而热偏差计算中必须考虑氧化膜对金属壁温的影响。

英文摘要：

For the problem of overheating caused by unevenly heating of high-temperature heating surfaces along the width direction in large coal-fired boilers, a detail study have been performed on the final superheater of 600 MW supercritical coal-fired boiler. Based on the prediction of oxide scale growth model and the heat deviation calculation, the influence of the oxide scale growth on tube temperature was analyzed. Results show that tube temperature increases with the growth of oxide scale, which would lead to local temperature over-run of the superheater tube and decline of creep rupture life, thus the effect of oxide scale on tube temperature should be considered in the heat deviation calculation.