Characterization of Some Nigerian Coals for Power Generation

Table 3

Comparison of heating values of sample coals estimated from the Boie equation with measured values.

Samples	Ultimate analysis, % dry weight					Heating value MJ/kg		Error%
	Carbon	Hydrogen	Oxygen	Nitrogen	Sulphur	Measured; MJ/kg	Estimated; MJ/kg
Odagbo	62.16	5.87	9.34	1.37	1.07	22.60	27.00	+19.46
Owukpa	67.82	5.88	9.47	1.43	0.60	26.51	29.78	+12.33
Ezimo	54.21	4.42	9.59	1.22	0.56	20.96	23.26	+9.88
Amansiodo	66.95	5.62	10.93	1.58	0.92	27.48	29.02	+5.60
Inyi	49.27	4.19	10.53	1.24	0.56	19.39	22.82	+17.68