Thermochemical Equilibrium Model of Synthetic Natural Gas Production from Coal Gasification Using Aspen Plus

Table 5

Validation of syngas composition (vol% dry base) for two different Colombian coals under slurry and dry feeding technologies.

Syngas; (%vold.b.)	Slurry feeding				Dry feeding				RMSD; (units)	(%)
	Bijao		Sanoha		Bijao		Sanoha
	[51]	Model	[51]	Model	[51]	Model	[51]	Model
N2	0.61	0.35	0.6	0.3	1.27	0.628	1.26	0.61	3.6	48.7
H2	37.10	35.39	30.9	38.52	26.06	20.58	26.25	20.19	5.3	18.3
CO	37.88	37.07	44.9	42.27	64.49	69.45	65.29	72.41	3.3	6.6
CO2	20.64	22.08	14.0	13.98	7.6	8.80	6.61	6.26	1.5	7.1
CH4	3.24	3.89	9.0	3.74	0.01	0.02	0.01	0.01	2.7	44.6
H2S	0.44	0.44	0.5	0.42	0.42	0.41	0.42	0.41	0.8	5.2
NH3	0.01	0.7	0.0	0.71	0.03	0.002	0.03	0.00	5.0	2364.4
COS	0.02	0.02	0.0	0.02	0.03	0.06	0.03	0.07	5.8	77.8
Ar	0.04	0.05	0.0	0.04	0.05	0.04	0.06	0.05	2.0	20.6
HHVw.b. (MJ/Nm^3)	8.49	7.44	11.77	9.06	9.28	10.66	11.47	11.1	1.6	13.4

*Calculated as the average of the four pairs simulation-reported data described in each entire row.