煤矿安全2019，Vol.50Issue(7)：42-45,4.DOI:10.13347/j.cnki.mkaq.2019.07.010
含水量对煤自燃特性的影响实验研究
Experimental Study on Effect of Water Content on Coal Spontaneous Combustion Characteristics
摘要
Abstract
To effectively control the spontaneous combustion of water-bearing coal in 5424Z coal mining face of Lyujiatuo Coal Mine, the influence of different water contents on the adsorption and exothermic parameters of coal samples was analyzed by using differential scanning calorimetry(DSC)and temperature programming method. The research shows that the moisture increase is in the range of 1% to 9%, and the temperature difference of the zero point of the heat flow is generally higher, indicating that the coal sample is not prone to spontaneous combustion. However, when the moisture increase of coal sample is 1% to 4%, the peak temperature of absorption peak is lower, and the heat absorption rate reaches the maximum value at this time. This part of coal sample is more prone to spontaneous combustion than other experimental water sections. As the water content of coal samples increases, the amount of CO and CO2 produced by them increases gradually, but the difference is not obvious. This indicates that when the water content of coal seam is increased by 1% to 7%, the process of warming oxidation and spontaneous combustion of coal can be appropriately promoted.关键词
煤自燃/含水量/差式扫描量热法/放热速率/程序升温/吸氧量Key words
coal spontaneous combustion/water content/differential scanning calorimetry/heat release rate/temperature program-ming/oxygen uptake分类
矿业与冶金引用本文复制引用
张九零,朱壮,范酒源,朱定,刘春雨..含水量对煤自燃特性的影响实验研究[J].煤矿安全,2019,50(7):42-45,4.基金项目
国家自然科学基金资助项目(51504077,51404086) （51504077,51404086）
河北省自然科学基金资助项目(E2016209056) （E2016209056）
华北理工大学杰出青年基金资助项目(jp201509,JQ201710) （jp201509,JQ201710）
