Grasses and Straws: Residues

fuelsc7.xls

Fuel	Straws		Straws		Straws		Straws		Straws		Straws		Straws/Husks		Straws
Type	Alfalfa Stems		Mint		Wheat DK		Wheat-OR		Wheat-CA		Wheat-Imperial		Rice Hulls		Rice
	As Rec'd	Dry	As Rec'd	Dry	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	14.34	15.81	16.16	19.42	12.29	14.87	15.38	17.06	16.47	17.71	16.82	19.34	14.44	16.22	14.60	15.86
Volatile Matter	71.59	78.92	58.05	69.80	67.09	81.24	70.84	78.62	69.97	75.27	61.86	71.11	56.57	63.52	60.28	65.47
Ash	4.78	5.27	8.97	10.78	3.21	3.89	3.89	4.32	6.52	7.02	8.31	9.55	18.05	20.26	17.19	18.67
Moisture	9.29	--	16.82	--	17.41	--	9.89	--	7.04	--	13.01	--	10.94	--	7.93	--
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	100.00	100.00	100.00	100.00
Ultimate Analysis
Carbon	42.79	47.17	37.61	45.22	39.27	47.55	42.32	46.96	41.75	44.92	37.32	42.90	34.58	38.83	35.20	38.24
Hydrogen	5.44	5.99	4.59	5.52	4.84	5.86	5.12	5.69	5.07	5.46	4.44	5.11	4.23	4.75	4.79	5.20
Oxygen	35.09	38.69	29.75	35.76	34.71	42.02	38.22	42.41	39.08	42.00	36.20	41.62	31.69	35.59	33.92	36.84
Nitrogen	2.43	2.68	2.05	2.47	0.48	0.59	0.39	0.43	0.40	0.44	0.46	0.53	0.46	0.52	0.80	0.87
Sulfur	0.18	0.2	0.21	0.25	0.08	0.09	0.17	0.19	0.14	0.16	0.26	0.29	0.05	0.05	0.17	0.18
Ash	4.78	5.27	8.97	10.78	3.21	3.89	3.89	4.32	6.52	7.02	8.31	9.55	18.05	20.26	17.19	18.67
Moisture	9.29	--	16.82	--	17.41	--	9.89	--	7.04	--	13.01	--	10.94	--	7.93	--
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	100.00	100.00	100.00	100.00
HHV, Btu/lb	7,280	8,025	6,312	7,589	6,529	7,905	7,152	7,937	7,171	7,714	6,288	7,228	6,065	6,811	5,971	6,486
Chlorine %	0.45	0.50	0.35	0.43	0.14	0.17	0.13	0.14	0.21	0.23	1.79	2.06	0.11	0.12	0.54	0.58
Water Soluble Alkalis %
Na2O	0.109	0.120	0.081	0.097	0.057	0.069							0.019	0.022
K2O	1.050	1.158	2.580	3.102	0.301	0.365							0.592	0.665
CaO														0.008
Elemental Composition
SiO2		5.79		19.45		55.32		46.07		55.32		37.06		91.42		74.67
Al2O3		0.07		4.61		0.84		1.69		1.88		2.23		0.78		1.04
TiO2		0.02		0.27		0.22		0.09		0.08		0.17		0.02		0.09
Fe2O3		0.30		2.33		1.05		1.85		0.73		0.84		0.14		0.85
CaO		18.32		14.60		12.27		9.95		6.14		4.91		3.21		3.01
MgO		10.38		5.71		2.48		2.45		1.06		2.55		<0.01		1.75
Na2O		1.10		1.64		1.51		1.18		1.71		9.74		0.21		0.96
K2O		28.10		26.50		12.9		25.20		25.60		21.70		3.71		12.30
SO3		1.93		2.90		2.49		4.92		4.40		4.44		0.72		1.24
P2O5		7.64		4.78		4.3		3.32		1.26		2.04		0.43		1.41
CO2/other		14.8		10.50
Undetermined		11.55		6.71		6.62		3.28		1.82		14.32				2.68
TOTAL		100.00		100.00		100.00		100.00		100.00		100.00		100.64		100.00
Alkali, Lb/MMBtu		1.92		4.00		0.71		1.44		2.49		4.15		1.17		3.82

Last Updated: 2/27/96

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