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古山典型煤层自然发火特性实验研究

发表时间:2011-03-31  浏览量:1384  下载量:629
全部作者: 孙淑敏
作者单位: 辽宁工程技术大学机械工程学院
摘 要: 以热分析动力学为基础,结合古山矿065-2工作面含丝炭层与不含丝炭层2个煤样的热重实验,对实验所得的热重法(thermo gravimetric,TG)曲线和微商热重法(derivative thermogravimetry,DTG)曲线进行分析,在每组曲线上找到煤样的临界温度和着火温度等对煤的氧化过程有研究意义的4个特征温度点,用不同动力学模型对热重数据进行相关性分析,计算了2个煤样的动力学参数。结果表明:典型煤层氧化分解属一级化学反应,丝炭煤着火温度低,自然发火倾向性大,需重点监测和防治。
关 键 词: 热分析动力学;自燃倾向性;特征温度;活化能
Title: Research on the spontaneous combustion characteristics of typical coal seams in Gushan
Author: SUN Shumin
Organization: School of Mechanical Engineering, Liaoning Technical University
Abstract: A series of thermo-gravimetric experiments are conducted, in which one coal sample from coal layers containing fusain and the other from coal layers without fusain are tested, both of them are taken from working face 065-2 in Gushan mine. Based on the theory of thermal analysis kinetics, thermo gravimetric (TG) curves and derivative thermogravimetry (DTG) curves in experimental results are analyzed and four characteristic temperature points significant to the oxidation process of coal, such as critical temperature and ignition temperature, are found out in each group of curves. Then TG data are correlated in the view of different kinetic models and the kinetic parameters of two coal samples are calculated. The results show that oxidation and thermal decomposition of typical coal samples complies with kinetic mechanism of the first order chemical reaction, and that coal containing fusain has a low ignition temperature and a stronger tendency of spontaneous combustion, which need to be monitored and controlled primarily.
Key words: thermal analysis kinetics; spontaneous combustion tendency; characteristic temperature; activated energy
发表期数: 2011年3月第6期
引用格式: 孙淑敏. 古山典型煤层自然发火特性实验研究[J]. 中国科技论文在线精品论文,2011,4(6):526-530.
 
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