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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 influence of temperature and pressure on the gas adsorption performance of coal, gas isothermal adsorption experiments of coal at different temperatures were carried out. Experiments were carried out to determine the adsorption isotherms of coal samples at 35 ℃, 50 ℃, 65 ℃, 80 ℃ and 105 ℃. The results show that with the increase of temperature, the adsorption amount of coal sample decreases under the same pressure. The higher the temperature, the more obvious the decrease of adsorption capacity. When the temperature is the same, the adsorption amount of coal sample increases with the increase of pressure In a certain temperature range, with the increase of temperature, the adsorption constant of coal samples a, b decreases linearly.