【摘要】 采用热重分析方法分别对含油污泥、煤及其混合试样在氩气气氛下的热解特性进行了实验研究.分析了含油污泥、煤及其混合燃料的热解机理,通过对实验数据进行处理计算,确定了其表观活化能、频率因子和质量平均活化能等反应动力学参数.实验结果表明:含油污泥与煤的热解过程分为4个阶段,各阶段的热解反应十分复杂;在混合试样的热解过程中,含油污泥与煤在200～700℃基本保持各自的热解特性,在700℃以上发生热解的协同作用,含油污泥-煤混合燃料热解温度范围增大;各试样热解反应表观活化能计算结果与上述结论吻合;混合试样的质量平均活化能比含油污泥和煤单一组分的都低,含油污泥与煤的混合热解在一定程度上形成了2种组分的互补和促进,获得了一种热解性能更好的燃料.更多还原

【Abstract】 The pyrolysis characteristics of oily sludge,coal and their mixture are studied by using thermogravimetric analysis in argon atmosphere,respectively.The pyrolysis mechanisms of them are discussed.Meanwhile their apparent activation energy,frequency factor and mass mean apparent activation energy are calculated by differential method.The experimental results show that the pyrolysis process of oily sludge and coal can be divided into four stages,and there are complex chemical reactions in each stage.The pyrolysis processes of the mixture samples show that oily sludge and coal keep their respective characteristics in the temperature range of 200～700 °C,however,their synergetic effect could take place above 700 °C.The calculated apparent activation energy of all mixture samples matches well with the above conclusion.More importantly,the mass mean apparent activation energy of the mixture samples is lower than that of individual components,which indicates that the mixture samples have better pyrolysis characteristics than oily sludge or coal.更多还原