煤自燃性参数的测试与应用

TEST AND APPLICATION OF THE SPONTANEOUS COMBUSTIBILITY PARAMETERS OF COAL

根据目前国内外煤自燃性测试方法存在的问题 ,提出了煤自燃性的衡量指标和实验测试方法。介绍了我国大型煤自然发火实验台直接测取的参数及特性参数的测算公式 ,并根据自燃性测试结果 ,提出了判定煤自燃危险区域的极限参数及判定条件。

The article puts forward a new method to simulate the process of coal self ignition The laboratory oven to examine spontaneous combustibility of coal has been established The experiment was designed to run unattended, with a personal computer being used for measurement and controlling functions On the basis of the experiments for simulation of spontaneous combustion in coal or in stockpiles out in laboratory oven XK, various indicators representing spontaneous combustibility of coal, such as the amount of oxygen adsorption, velocity of oxygen consumption, producing rates of CO and CO 2 ,and so on, may be evaluated respectively Then according to the bond energy changes of the gases in the process of coal oxidation, heat output of coal can be evaluated Finally, based on the results obtained from the experiments, various critical parameters of coal self ignition were calculated