Application of a Modified Low-Field NMR Method on Methane Adsorption of Medium-Rank Coals

Table 5

Results of the adsorbed methane on the coal samples determined by the low-field NMR method.

Sample	Parameters	Sequence
		1	2	3	4	5	6
ML	(MPa)	1.19	2.61	3.63	4.70	6.05	7.73
	S1	7897.07	8424.60	8796.56	8746.33	9179.86	9341.07
	(m^3/t)	6.479	10.090	11.394	12.288	13.252	14.779
ZCD	(MPa)	1.40	2.86	4.30	5.54	6.58	7.61
	S1	8935.66	9224.92	9391.05	9450.81	9444.28	9431.63
	(m^3/t)	6.599	9.833	11.620	12.976	14.059	14.948
TL	(MPa)	1.39	2.80	4.06	5.20	6.30	7.54
	S1	1704.017	3933.606	5624.065	7407.862	9207.367	11112.86
	(m^3/t)	7.620	11.659	13.077	14.210	15.360	16.076
XQ	(MPa)	0.95	1.87	2.70	4.59	6.72	7.98
	S1	3594.01	9297.04	9314.20	10060.46	10062.72	10032.34
	(m^3/t)	5.355	8.493	10.397	12.773	14.742	16.089
XM	(MPa)	0.97	1.97	2.74	4.19	5.84	7.78
	S1	13403.84	14419.56	14586.88	14808.96	15510.67	15556.58
	(m^3/t)	6.073	9.685	11.575	13.830	15.757	17.372
DEP	(MPa)	1.06	2.59	4.02	5.24	6.54	7.86
	S1	9913.70	10210.35	10476.55	10911.88	11332.63	11377.45
	(m^3/t)	7.940	11.095	14.480	16.720	17.660	18.802
DQ	(MPa)	1.30	2.71	4.38	5.65	6.93	7.72
	S1	9533.81	9830.48	10296.58	10531.93	10872.74	10997.56
	(m^3/t)	10988	15.506	19.860	21.093	23.314	23.810

is the volume of adsorbed methane determined by the low-field NMR method.