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利用自主研发的高压变温吸附解吸实验装置,进行了颗粒煤和原煤在不同吸附平衡压力下的瓦斯解吸实验,并对原煤和颗粒煤解吸特性差异进行对比分析。结果表明:在解吸的前60 min内,颗粒煤的瓦斯解吸量要比原煤的瓦斯解吸量大得多;颗粒煤瓦斯解吸速度始终大于同时段内原煤瓦斯解吸速度,但颗粒煤的瓦斯解吸速度衰减得更快,尤其是在解吸初期表现得更加明显。
The desorption experiments of coal and raw coal under different adsorption equilibrium pressures were carried out by using self-developed high pressure and temperature swing adsorption and desorption experimental device. The differences of desorption characteristics between raw coal and coal were compared. The results show that during the first 60 min of desorption, the gas desorption rate of granular coal is much larger than that of raw coal. The desorption rate of coal gas is always greater than the desorption rate of coal gas in the same period, but the gas desorption rate Decay faster, especially in the early stages of desorption was more obvious.