【摘要】 利用ZRJ-1型煤自燃性测定仪测出煤在低温恒压时的吸氧量,比较不同温度下吸氧量的变化;同时比较相同温度下不同煤样吸氧量的差异,分析产生差异的原因。结果表明:煤在低温时物理吸附量随环境温度升高而下降;褐煤相对于其它三种煤样吸氧量偏大,是由于煤中水分蒸发造成比表面积增大造成的,同时,煤的结构也是一个不可忽视的因素。更多还原

【Abstract】 Oxygen physisorption of coal samples were measured by the apparatus of ZRJ-1for identifying the tendency of coal to spontaneous combustion at low temperature and fixed pressure.Different quan-tities of oxygen physisorption were compared both for different temperature environments and for different coal samples.Then the reason among the difference was analyzed.The result shows that the quantity of oxygen physisorption decreases with the environment temperature.The specific sur-face area increasing via the water evaporation leads to a greater quantity of the coal sample from Lila Guangxi related to the other three coal samples.Moreover,the structure of coal is also a sig-nificant factor in oxygen physisorption.更多还原