Performance of Pulverized Coal Combustion under High Temperature Air Diluted by Steam

Table 1

Properties of coal structure.

Coal analysis		Wet	Dry	Air dried	Dry ash free	Unit
Proximate analysis	Moisture	6.7	—	0.9	—	%
	Ash	11.10	11.9	11.79	—	%
	Volatiles	19.41	20.80	20.61	23.61	%
	Fixed carbon	62.79	67.30	66.69	76.39	%
Ultimate analysis	Chlorine	0.01	<0.01	0.01	0.01	%
	Sulfur	0.32	0.34	0.34	0.39	%
	Carbon	70.91	76.00	75.32	86.27	%
	Hydrogen	3.73	4.00	3.96	4.54	%
	Nitrogen	1.4	1.50	1.49	1.70	%
	Oxygen	5.78	6.20	6.14	7.04	%
High heating values (HHV)		28.95	31.03	30.75	35.22	MJ/kg
Low heating values (LHV)		27.99	30.17	29.90	34.25	MJ/kg