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Biomass Fuel Analysis From Energy Crops

 


Summary: The below biomass fuel analysis (Laboratory ID Number AC24135) was performed by the Southern Research Institute (the engineering research arm of The Southern Company) for energy crop (closed loop biomass) eucalyptus fuel used at our co-firing test burn at Lakeland Electric's McIntosh 3 Unit (a 365 MW pulverized coal boiler).

An additional source for both fuel and air emission data can be found in the Tampa Electric Energy Crop Co-firing Report on their Polk Power IGCC Unit.

Dry Basis

Test Name:
Reference
Result
Units
Ash
ASTM D 5142
1.93
% By Weight
Heat of Combustion
ASTM D 5865
8730
Btu/lb
Carbon
ASTM D 5373
51.32
% by Weight
Hydrogen
ASTM D 5373
5.62
% by Weight
Nitrogen
ASTM D 5373
0.23
% by Weight
Chlorine
ASTM D 3761
499
mg/kg
Sulfur
ASTM D 4239
0.08
% by Weight

As Received

Test Name:
Reference
Result
Units
Moisture, Total
ASTM D 2013
51.46
% By Weight
Ash
ASTM D 5142
0.94
% by Weight
Heat of Combustion
ASTM D 5865
4238
Btu/lb
Carbon
ASTM D 5373
24.91
% by Weight
Hydrogen
ASTM D 5373
2.73
% by Weight
Nitrogen
ASTM D 5373
0.11
% by Weight
Chlorine
ASTM D 3761
242
mg/kg
Sulfur
ASTM D 4239
0.04
% by Weight

General

Test Name:
Reference
Result
Units
Heat of Combustion, MAF
ASTM D 5865
8902
Btu/lb
Sulfur
ASTM D 3180
0.092
lbs/mmBTU

The above Ultimate Analysis for Eucalyptus showing a carbon content (dry basis) of approximately 50% is consistent with other biomass wood fuels from Babcock and Wilcox's Steam/its generation and use (Chapter 5, page 22).

Ultimate Analysis (Dry Basis)

Component:
Pine
Oak
Eucalyptus
Carbon
53.4%
49.7%
49.0%
Hydrogen
5.6%
5.4%
5.87%
Oxygen
37.9%
39.3%
43.97%
Nitrogen
.1%
.1%
.3%
Sulfur
.1%
.1%
.01%