不同温度条件下煤对瓦斯的等温吸附实验研究

 为探索Langmuir方程吸附常数与温度之间的变化规律，利用HCA型高压容量法吸附装置，针对重庆能源投资集团松藻煤电公司8#煤层煤样，分别在温度为30℃、40℃、50℃、60℃、70℃条件下进行了煤对瓦斯的等温吸附实验。结果表明，当温度一定时，吸附量随瓦斯压力的升高逐渐增加并趋于一稳定值；压力一定时，随着温度的升高，煤的瓦斯吸附量呈下降趋势；而且，随着温度的升高，吸附常数a值有逐渐降低趋势，而b值明显呈线性关系显著下降；吸附常数a、b与温度T的分别符合二次函数和线性方程关系。

Experiment Study on Gas Isothermal Adsorption from Coal Under Different Temperature Conditions

To study the relationship between absorption constants in Langmuir equation and temperature, isothermal adsorption experiments with a temperature of 30℃, 40℃, 50℃, 60℃ and 70℃are carried out.. The equipment used in the experiments is HCA high pressure volumetric method gas adsorption experimental system, and the coal sample is got from the 8# coal-bed of Chongqing Energy Investment group Songzao C&;E CO. LTD.. The experimental results show that when temperature keeps constant, adsorption capacity will increase with the increase of gas pressure and it tends to be a stable value; when gas pressure keeps constant, the adsorption constant a will decrease with the increase of temperature, the adsorption constant b will decrease linearly with the increase of temperature; a and b respectly have a quadratic function relationship and a linear relationship with temperature T.