Thermodynamic Characteristics of Methane Adsorption of Coal with Different Initial Gas Pressures at Different Temperatures

Table 5

Desorption time of #2 coal sample.

Initial free gas pressure (MPa)	Temperature (°C)	Adsorption time (min)
1.595	30	121.6
	40	117.2
	50	119.4
	60	130.0
	70	142.4
	80	148.9
	90	152.6
1.032	30	121.2
	40	117.5
	50	128.2
	60	145.8
	70	135.5
	80	147.8
	90	152.4
0.765	30	120.8
	40	125.5
	50	134.2
	60	137.4
	70	148.2
	80	152.7
	90	158.5
0.539	30	122.7
	40	128.3
	50	133.8
	60	142.4
	70	146.6
	80	156.9
	90	165.7
0.362	30	129.7
	40	133.3
	50	138.8
	60	148.0
	70	155.2
	80	157.2
	90	160.8
0.189	30	130.3
	40	138.7
	50	144.4
	60	149.9
	70	157.2
	80	156.7
	90	165.4