Characteristics of Generating Carbon Oxides at Low-temperature Oxidation Stages of Low-Rank Coal

Table 2

Mass change of the coal samples at different temperature-rise rates and at different stages.

Sample	Desorption stage		Dynamic equilibrium stage		Oxidation adsorption stage
	T1 (°C)	∆M (%)	T2 (°C)	∆M (%)	T3 (°C)	∆M (%)	T4 (°C)	∆M (%)
WD	73.5	−0.14	111.6	−0.23	175.4	0.03	228.1	1.46
YL	69.8	−0.54	119.1	−0.99	171.5	−0.67	230.1	1.26
HM	73.6	−3.66	124.2	−6.33	183.3	−6.51	217.0	−6.32
CF	69.1	−3.71	115.1	−7.11	173.0	−8.11	216.5	−8.17