Urban Waste Fuels and Residues

fuelsc3.xls

Fuel	Wood		Wood		Wood		Waste Paper		Refuse Derived Fuel		Currency
Type	Demolition		Land Clearing		Yard Waste		Mixed Waste Paper		Tacoma		Shredded
	As Rec'd	Dry	As Rec'd	Dry	As Rec'd	Dry	As Rec'd	Dry	As Rec'd	Dry	As Rec'd	Dry
Proximate Analysis
Fixed Carbon	11.21	12.32	7.04	13.87	8.41	13.59	6.78	7.42	0.45	0.47	11.13	11.67
Volatile Matter	67.84	74.56	35.38	69.63	40.90	66.04	76.87	84.25	70.29	73.40	79.02	82.86
Ash	11.94	13.12	8.39	16.50	12.62	20.37	7.60	8.33	25.02	26.13	5.21	5.47
Moisture	9.01	--	49.19	--	38.07	--	8.75	--	4.24	--	4.64	--
TOTAL	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
Ultimate Analysis
Carbon	42.13	46.3	21.5	42.32	25.72	41.54	43.79	47.99	38.02	39.70	40.90	42.89
Hydrogen	4.9	5.39	2.55	5.02	2.97	4.79	6.05	6.63	5.53	5.78	5.69	5.97
Oxygen	31.39	34.5	18.17	35.77	19.94	32.21	33.61	36.84	26.09	27.24	41.61	43.62
Nitrogen	0.52	0.57	0.17	0.33	0.53	0.85	0.13	0.14	0.77	0.80	1.67	1.75
Sulfur	0.11	0.12	0.03	0.06	0.15	0.24	0.07	0.07	0.33	0.35	0.28	0.30
Ash	11.94	13.12	8.39	16.5	12.62	20.37	7.6	8.33	25.02	26.13	5.21	5.47
Moisture	9.01	--	49.19	--	38.07	--	8.75	--	4.24	--	4.64	--
TOTAL	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
HHV, Btu/lb	7,203	7,916	3,764	7,408	4,341	7,009	8,152	8,934	6,396	6,679	7,480	7,867
Chlorine %	0.05	0.05	0.01	0.02	0.19	0.3
Water Soluble Alkalis %
Na2O			0.008	0.015							0.214	0.224
K2O			0.095	0.187							0.123	0.129
CaO
Elemental Composition
SiO2		45.91		65.77		59.65		28.10		33.81		2.99
Al2O3		15.55		14.84		3.06		52.56		12.71		11.92
TiO2		2.09		0.55		0.32		4.29		1.66		24.30
Fe2O3		12.02		5.27		1.97		0.81		5.47		19.55
CaO		13.51		5.78		23.75		7.49		23.44		12.38
MgO		2.55		1.81		2.15		2.36		5.64		1.38
Na2O		1.13		2.70		1.00		0.53		1.19		3.58
K2O		2.14		2.19		2.96		0.16		0.20		1.94
SO3		2.45		0.36		2.44		1.70		2.63		9.30
P2O5		0.94		0.66		1.97		0.20		0.67		0.78
CO2/other				0.45								1.27
Undetermined		1.71		-0.38		0.73		1.80		12.58		10.61
TOTAL		100.00		100.00		100.00		100.00		100.00		100.00
Alkali, Lb/MMBtu		0.54		1.09		1.15		0.06		0.54		0.38

Last Updated: 2/27/96

Analyst/Contact: Tom Miles, Jr.
T. R. Miles, Consulting Design Engineer, Portland, Oregon U.S.A.