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为揭示煤中甲烷非等温吸附解吸规律,利用实验室试验方法,以块状型煤为研究对象,研究不同温度和压力下的甲烷吸附解吸过程。试验结果表明:相同温度条件下,随着压力的增高,吸附量增加并逐渐趋于平缓;同一压力下,解吸量小于吸附量,解吸出现滞后现象;相同条件下,型煤吸附量小于煤粉试样。不同温度区间,吸附解吸规律不同。在10～30℃,同一压力下,随着温度的升高,吸附量和解吸量下降幅度较大;在30～50℃,吸附量和解吸量出现先升高后降低的趋势,但变化幅度较小,温度变化对于吸附量和解吸量的影响较小。在10～30℃,温度是影响吸附解吸的主要因素。
In order to reveal the non-isothermal adsorption and desorption of methane in coal, a laboratory test was used to study the adsorption and desorption of methane under different temperatures and pressures. The experimental results show that under the same temperature, the adsorption amount increases and gradually becomes gentle with the increase of pressure. Under the same pressure, the desorption amount is less than the adsorption amount and desorption lags behind. Under the same conditions, the adsorption amount of briquette is less than that of pulverized coal Sample. Different temperature range, different adsorption and desorption laws. At the temperature of 10 ~ 30 ℃ and the same pressure, the adsorption and desorption decreased greatly with the increase of temperature. At 30 ~ 50 ℃, the adsorption and desorption increased firstly and then decreased, but the variation range Smaller, the temperature changes on the amount of adsorption and desorption less affected. At 10 ~ 30 ℃, the temperature is the main factor affecting the adsorption and desorption.