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基于热分析实验,研究了FeS化学纯样品从室温到1000℃间的氧化分解基本规律;通过对热重数据的计算,分析了FeS在不同动力学机制模型函数中的相关系数,结果表明FeS的自燃氧化过程符合边界控制反应的收缩圆柱体模型;确定了在523～873K范围内FeS的活化能(E)=290.1586kJ/mol,指前因子A=1.28×10-6K/s。研究表明,FeS的E越小,则含硫油品的自燃倾向性越高。
Based on the thermal analysis experiment, the basic law of oxidative decomposition of FeS chemically pure sample from room temperature to 1000 ℃ was studied. The correlation coefficients of FeS in model functions of different kinetic mechanisms were analyzed by calculating the thermogravimetric data. The results show that the FeS The spontaneous combustion process accords with the shrinking cylinder model of boundary control reaction. The activation energy (E) of FeS in the range of 523K to 873K is 290.1586kJ / mol and the pre-exponential factor A is 1.28 × 10-6K / s. The research shows that the smaller the E of FeS, the higher the spontaneous combustion tendency of sulfur-containing oil.