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

Table 3

Calculation results of coal SJC.

Method	(°C/min)	E (kJ/mol)	A (1/S)	R^2
The general integral	5	223.657	1.16 × 10^14	0.9997
	10	160.223	9.85 × 10^8	0.9985
	15	163.37	1.65 × 10^9	0.9984
	20	153.127	5.09 × 10^8	0.9956
MacCallum–Tanner	5	228.401	3.13 × 10^14	0.9997
	10	165.168	2.41 × 10^9	0.9998
	15	168.254	4.04 × 10^9	0.9986
	20	158.027	1.22 × 10^9	0.9963
Average		177.53	2.75 × 10^10	0.9983
Kissinger	—	247.84	5.19 × 10^15	0.9689
FWO	—	329.526	—	0.9856