wood, willow tops (#720)

ID-number#720
Materialwood, willow tops
Classification ECN Phyllis classification ▸ untreated wood ▸ willow
NTA 8003 classification ▸ [100] hout ▸ [110] vers hout ▸ [120] loofhout ▸ [122] zacht loofhout
Ash typeASTM D1102; 600C ASTM D 1102, 600 Degree Celcius
Submitter organisationECN (Netherlands)
LiteratureT. R. Miles, T. R. Miles,Jr, L. Baxter, R. W. Bryers, B. M. Jenkins and L. L. Oden: Alkali deposits found in biomass power plants. A preliminary investigation of their extend and nature, NREL/TP-433-8142, 82 p. (1995).

Values

Property Unit Value Std dev Det lim Lab Date Method Remarks
ar dry daf

Fuel Properties

Proximate Analysis

Moisture content wt% 7.21
Ash content wt% 2.17 2.34
Volatile matter wt% 73.92 79.66 81.57
Fixed carbon wt% 16.70 18.00 18.43 Calculated

Ultimate Analysis

Carbon wt% 45.86 49.42 50.61 Measured
Hydrogen wt% 5.47 5.90 6.04 Measured
Nitrogen wt% 0.89 0.96 0.98 Measured
Sulphur wt% 0.12 0.13 0.13 Measured
Oxygen wt% 38.28 41.25 42.24 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 17.00 18.51 18.95
Gross calorific value (HHV) MJ/kg 18.37 19.79 20.27
HHVMilne MJ/kg 18.15 19.55 20.02 Calculated

Ash Properties

Ash composition

CO2 wt% (ash) 22.64
SO3 wt% (ash) 2.92
P2O5 wt% (ash) 7.10
SiO2 wt% (ash) 2.05
Fe2O3 wt% (ash) 0.35
Al2O3 wt% (ash) 1.97
CaO wt% (ash) 34.18
MgO wt% (ash) 2.98
Na2O wt% (ash) 2.67
K2O wt% (ash) 18.40
TiO2 wt% (ash) 0.03