煤自然发火期快速测定的实验研究  

Experimental Study on Quick Test Method for Minimum Period of Coal Spontaneous Combustion

作　　者：刘汝正[1] 王飞[1] 

机构地区：[1]太原理工大学矿业工程学院,太原030024

出　　处：《煤炭技术》2016年第5期230-232,共3页Coal Technology

基　　金：山西省研究生教育创新项目(02100757)

摘　　要：介绍了煤实验最短自然发火期的快速测试方法。通过实验数据分析,确定了70℃时煤样排气出口氧气含量(C_(70))与交叉温度点(T_(cpt)),分别是煤低温缓慢氧化阶段和快速氧化阶段升温特性的特征参数。结合C_(70)和T_(cpt),计算得出了煤在缓慢氧化阶段的平均升温速率与煤在快速氧化阶段的绝热氧化时间,实现了煤实验最短自然发火期快速测定。A fast test method for the experimental shortest coal spontaneous combustion was studied. By analyzing the experimental data, it can be ensured that the oxygen concentration of gas from coal tank outlet at 70 ℃（C70） and the crossing point temperature （Tcpx） are the characteristic parameters that can reflect the complicated character at slow oxidation stage and quick oxidation stage respectively. By using the C70 and Tcpx, average heating rate at slow oxidation stage and oxidation time at quick oxidation stage was calculated, then the experimental shortest coal spontaneous combustion was promptly tested.

关 键 词：煤实验最短自然发火期 快速测定 自燃倾向性 耗氧量 交叉温度点 

分 类 号：TD75[矿业工程—矿井通风与安全]