【摘要】 奥里油中含钒量较多,是锅炉预防高温腐蚀设计中的大难题.文中针对奥里油钒高温下的腐蚀机理,运用混沌理论,建立基于最大Lyapunov指数的腐蚀预测模型,并以电阻探针测得某输油管道内的高温腐蚀深度数据,对所提出的腐蚀预测模型进行校验.预测与评估结果显示:腐蚀深度误差均小于6%,平均误差为3.58%,预测精度较高,表明所提出的预测模型可以有效预测金属的高温腐蚀状况,为奥里油钒的高温腐蚀预测提供理论依据.更多还原

【Abstract】 The large amount of vanadium in Orimulsion may cause unexpected problems in the prevention of high-temperature corrosion of furnace.In order to solve this problem,the corrosion mechanism of vanadium at high temperature is analyzed and the chaos theory is adopted to establish a corrosion-forecasting model based on the maximum Lyapunov exponent.The proposed model is then tested according to the depth of high-temperature corrosion of a pipeline measured by means of a resistance probe.Tested and predicated results show that the prediction is of high precision,and that the error of corrosion depth is less than 6% with the average being 3.58%.It is thus concluded that the proposed forecasting model can effectively predict the high-temperature corrosion of metal and lay theoretical foundations for the forecasting of vanadium corrosion at high temperature.更多还原