Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods

Table 1

Proximate and ultimate analyses of coal samples.

Property	Coal SJC	Coal WJG	Coal ZJM	Coal HCG
Proximate analysis (wt.%, ad)
Moisture	6.22	4.74	6.71	2.58
Volatiles	52.83	25.73	54.73	38.76
Fixed carbon	35.95	44.61	36.66	57.62
Ash	5.00	24.92	1.90	1.04
Ultimate analysis (wt.%, daf)
Carbon	78.16	78.41	82.88	83.27
Hydrogen	5.33	3.87	5.42	5.41
Oxygen	14.94	15.55	10.08	8.78
Nitrogen	1.10	1.16	0.89	2.07
Sulfur	0.47	1.01	0.73	0.47