不同温压条件下煤瓦斯吸附特性的试验研究

Experimental Study on Coal Adsorption Characteristics under Different Temperature and Pressure

为研究温度、压力对煤吸附瓦斯性能的影响,进行了不同温度下煤的瓦斯等温吸附试验。试验测试出煤样在35℃、50℃、65℃、80℃、105℃下的等温吸附线。研究表明:随着温度的升高,同一压力下煤样的吸附量减小,温度越高,吸附量减小趋势越明显;温度相同时,煤样的吸附量随着压力的增大而增大;在某一温度区间内,随着温度的升高,煤样的吸附常数a、b值线性递减。

In order to study the impact of temperature on coal adsorption characteristics under constant pressure, an experimental study was undertaken. Testing the adsorption isotherms of coal samples at 35℃, 50 ℃, 65℃, 80 ℃, 105℃ in the process of experiment. The study has shown that： as the temperature increases, the amount of coal adsorption decreases at the same pressure, the higher of the temperature, the more obvious of this trend; When the temerature is same, the adsorption capacity of coal increases with increasing pressure. As the temperature increses, adsorption constants a and b of coal mine decreases linearly.