温度和压力对煤样瓦斯吸附解吸的影响规律研究  

Study on the Influence of Temperature and Pressure on Coal Sample Gas Adsorption and Desorption

作　　者：许慧敏 XU Huimin(Silaogou Coal Mine,Jinneng Holding Coal Industry Group,Datong 037000,China)

机构地区：[1]晋能控股煤业集团四老沟矿,山西大同037000

出　　处：《煤》2024年第12期5-8,共4页Coal

基　　金：国家自然科学基金项目(51374258)。

摘　　要：通过试验装置分析煤样瓦斯吸附解吸随着温度和压力的变化规律,重点分析温度由20℃增大到50℃、压力由0MPa升高到5MPa时的相关参数变化规律。试验结果证明:煤样瓦斯吸附量与温度之间的关系为负相关,与压力之间的关系为正相关;当吸附量保持不变时,瓦斯吸附压力随着温度的升高而增大;扩散两个参数D、■随温度升高而明显增大,当温度达到35~40℃时,增值最大。The change law of coal sample gas adsorption and desorption with temperature and pressure was analyzed through the test device.The change law of related parameters was analyzed when the temperature increased from 20℃to 50℃and the pressure increased from 0 MPa to 5 MPa.The test results show that the relationship between gas adsorption and temperature is negative correlation,and the relationship between pressure and pressure is positive correlation.When the adsorption capacity remained constant,the gas adsorption pressure increased with the increase of temperature.The two diffusion parameters D and ■ increase obviously with the increase of temperature,and the increment is the greatest when the temperature reaches 35~40℃.

关 键 词：等量吸附热 吸附常数 扩散动力学参数 

分 类 号：TD712[矿业工程—矿井通风与安全]