Grasses and Straws: Energy Crops

Appendix C.6 Alkali Deposit Investigation Samples Alkali Deposits Found in Biomass Power Plants: A Preliminary Investigation of Their Extent and Nature
National Renewable Energy Laboratory Subcontract TZ-2-11226-1


fuelsc6.xls
FuelMiscanthusSorghastrumMiscanthus ArundoStrawsSugar Cane
TypeSilberfederAvenaceumSinensis GracillimusArundo BonaxAlfalfa StemsBagasse-screened
As Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDry
Proximate Analysis
Fixed Carbon10.7312.5512.5714.1814.2716.309.5016.3814.3415.8111.5612.89
Volatile Matter72.1284.4072.4281.6770.2880.3446.5080.1971.5978.9276.6485.43
Ash2.613.053.684.152.943.361.993.434.785.271.511.68
Moisture14.54--11.33--12.51--42.01--9.29--10.29--
TOTAL100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Ultimate Analysis
Carbon40.4147.2941.9447.3041.7047.6627.2947.0642.7947.1743.9649
Hydrogen4.925.755.336.015.035.753.395.845.445.995.275.87
Oxygen37.1943.5237.4042.1837.3942.7324.942.9535.0938.6938.8343.29
Nitrogen0.280.330.280.320.390.450.350.62.432.680.090.1
Sulfur0.050.060.040.040.040.050.070.120.180.20.050.06
Ash2.613.053.684.152.943.361.993.434.785.271.511.68
Moisture14.54--11.33--12.51--42.01--9.29--10.29--
TOTAL100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
HHV, Btu/lb6,8798,0507,1318,0427,1318,1504,7008,1047,2808,0257,3828,229
Chlorine %0.050.060.040.040.070.080.120.200.450.500.020.02
Water Soluble Alkalis %
Na2O0.0030.0030.0050.0050.0030.0030.0020.0030.1090.120
K2O0.2880.3370.2950.3320.5450.6230.6491.1181.0501.158
CaO
Elemental Composition
SiO261.8471.0556.0744.215.7946.88
Al2O30.981.780.780.800.0711.40
TiO20.050.020.020.100.021.39
Fe2O31.350.920.930.860.307.98
CaO9.616.8113.622.7818.325.35
MgO2.462.141.073.0710.385.81
Na2O0.330.240.270.491.102.45
K2O11.608.7018.7030.0028.109.81
SO32.631.081.704.821.935.08
P2O54.204.306.246.167.645.04
CO2/other14.8
Undetermined4.952.960.606.7111.55-1.19
TOTAL100.00100.00100.00100.00100.00100.00
Alkali, Lb/MMBtu0.450.460.781.291.920.25


Last Updated: 2/27/96

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

E-Mail Address: tmiles@teleport.com