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

Table 4

Calculation results of coal WJG.

Method	(°C/min)	E (kJ/mol)	A (1/S)	R^2
The general integral	5	217.04	9.55 × 10^12	0.9940
	10	207.72	1.78 × 10^12	0.9960
	15	187.76	6.92 × 10^10	0.9919
	20	187.23	6.03 × 10^10	0.9874
MacCallum–Tanner	5	221.86	2.57 × 10^13	0.9947
	10	212.71	4.79 × 10^12	0.9965
	15	192.74	1.78 × 10^11	0.9930
	20	192.35	1.62 × 10^11	0.9891
Average		200.34	8.51 × 10^11	0.9928
Kissinger	—	203.05	5.99 × 10^11	0.9700
FWO	—	192.83	—	0.9920