【作者】 赵凤杰；

【导师】 刘剑；

【作者基本信息】 辽宁工程技术大学 ， 安全技术及工程， 2005， 硕士

【摘要】 为了使活化能这一指标科学有效的应用于煤的自燃倾向性的鉴定,利用热重分析仪器,对不同煤样进行了自燃倾向性的实验研究。不同升温速率的实验结果曲线表明,提高升温速率,TG曲线向高温方向移动; 运用热重动力学方法求出煤样在不同升温速率下的活化能,发现随着升温速率的增加,煤的活化能逐渐增大,即自燃倾向性减小,升温速率是一个影响煤的自燃倾向性表征的重要因素。不同粒度煤样的实验曲线结果表明,煤样粒度越细,TG曲线和DSC曲线向低温方向移动,煤样的着火提前,通过计算得到煤的活化能,发现粒度越小,活化能值也越小,越容易着火,即其自燃倾向性增大,粒度是一个重要的影响因素。更多还原

【Abstract】 To have the index of activation energy been applied to appraising spontaneous combustion tendency of coal, using thermogravimetric analysis instrument, study combustion experiment of different coal sample. The experiments results of different heating rate show that TG curves move to high temperature zone with the increasing of heating rate. The result of activation energy, computed using the thermogravimetric kinetics, suggest that activation energy of coal increases gradually with the increasing of heating rate. Heating rate is an important influential factor for spontaneous combustion tendency characterization of the coal. The experiments results of different particle size show that TG and DSC curves move to low temperature zone with the increasing of particle size. Activation energy of coal decreases gradually with the increasing of particle size. Particle size is also an important influential factor for spontaneous combustion tendency characterization of the coal.更多还原