摘要
为了研究煤的微观结构对自燃特性影响规律,利用镜质组反射率实验、红外光谱分析和低温液氮吸附实验对煤样进行实验研究。研究表明:虽然金川矿业长焰煤比东欢坨矿气煤变质程度要低,但是由于金川矿业长焰煤拥有更小比表面积以及煤分子活性基团数量均小于东欢坨气煤,导致金川矿业长焰煤自燃倾向性更低。由此可见,自燃特性判定不应该简单由变质程度决定,而更应该综合考虑煤的微观结构特性。
In order to study the influence of microstructure on the spontaneous combustion tendency of coal, the samples were studied by vitrinite reflectance experiment, infrared spectroscopy and low temperature adsorption experiment. The results show that although the long-flame coal in Jinchuan mining area is lower than that in Donghuantuo mining area, because of Jinchuan mining of long flame coal has a smaller specific surface area and coal molecules and other active groups are less than Donghuantuo coal, leading to Jinchuan mining long flame coal spontaneous combustion propensity lower. It can be seen that the spontaneous combustion tendency determination should not be simply determined by the degree of metamorphism, but should also take into account the microstructure characteristics of coal.
出处
《煤炭技术》
北大核心
2017年第12期139-141,共3页
Coal Technology
基金
国家自然科学基金资助项目(51474086)
河北省自然科学基金资助项目(E2014209138)
华北理工大学培育基金项目(GP201511)
关键词
比表面积
官能团
变质程度
自燃特性
specific surface area
functional group
metamorphic grade
spontaneous combustion
