通过煤的程序升温实验,了解煤低温氧化特性,利用煤氧反应前后氧化浓度的变化,计算出不同温度下的反应速率值,反应速率随温度上升不断增加. 根据Arrhenius方程,计算出不同氧化阶段的活化能值,通过活化能发现煤氧反应可以分为三个反应阶段,70 ℃与145 ℃分别为其临界温度,并且活化能值随着氧化反应的进行呈减小趋势.%By temperature programming experiment, the low temperature oxidation properties of coal was studied. By comparison of the oxides concentration before and after oxidation, reaction rate at different temperatures was calculated. The reaction rate increases with the temperature. According to Arrhenius equation, the activation energy values in the different oxidation stages were calculated. According to the activation energy, the coal oxygen reaction could be divided into three stages, with two critical temperatures: 70℃and 145℃. Besides, the activation energy decreases with the oxidation reaction.
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