Wood Fuels: Various

Appendix C.2 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


fuelsc2.xls
FuelWoodWoodWoodWoodWoodWoodWoodWood
TypeRed Oak SawdustFir Mill WasteFurniture WasteHybrid PoplarAlder/Fir SawdustPoplar-CoarseForest ResidualsChristmas Trees
As Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDryAs Rec'dDry
Proximate Analysis
Fixed Carbon11.9213.476.4717.4811.7713.3911.6312.499.1419.3111.4412.266.9613.6212.9320.80
Volatile Matter76.3586.2230.3882.1172.9883.0078.9784.8136.2776.5680.3386.1442.1082.4146.0273.99
Ash0.280.310.150.413.183.612.512.701.964.131.491.602.033.973.245.21
Moisture11.45--63.00--12.07--6.89--52.63--6.74--48.91--37.81--
TOTAL100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Ultimate Analysis
Carbon44.2449.9618.9551.2343.8549.8746.7250.1824.1751.0247.3950.8225.750.3132.0951.59
Hydrogen5.245.922.215.985.25.915.646.062.755.85.495.892.354.593.475.58
Oxygen38.7643.7715.6642.2935.4240.2937.6640.4418.2538.5438.3241.0820.4239.9922.8236.70
Nitrogen0.030.030.020.060.250.290.560.60.220.460.550.590.531.030.320.52
Sulfur<0.010.010.010.030.030.030.020.020.020.050.020.020.060.110.250.40
Ash0.280.310.150.413.183.612.512.71.964.131.491.62.033.973.245.21
Moisture11.45--63.00--12.07--6.89--52.636.74--48.91--37.81--
TOTAL100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
HHV, Btu/lb7,4158,3743,2488,7797,6138,6587,6158,1784,1508,7607,5908,1394,4298,6705,6039,009
Chlorine %<0.01<0.010.070.19<0.01<0.010.010.01<0.010.020.040.040.020.04
Water Soluble Alkalis %
Na2O<0.0010.0010.0510.1390.0040.009
K2O0.0690.0780.0190.0510.0860.181
CaO0.0170.019
Elemental Composition
SiO220.9715.1757.625.9035.360.8817.7838.89
Al2O32.993.9612.230.8411.540.313.5514.74
TiO20.270.270.500.300.920.160.500.36
Fe2O32.946.585.631.407.620.571.589.30
CaO10.9011.9013.8949.9224.9044.4045.469.50
MgO4.154.593.2818.403.814.327.482.52
Na2O1.4023.502.360.131.710.232.130.53
K2O22.407.003.779.645.7520.088.527.86
SO32.692.931.002.040.783.952.7811.36
P2O51.332.870.501.341.900.157.442.40
CO2/other14.3018.928.181.8519.52
Undetermined15.662.31-0.781.913.865.432.782.54
TOTAL100.00100.00100.00100.00100.00100.00100.00100.00
Alkali, Lb/MMBtu0.090.140.260.320.350.400.490.49


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