alfalfa stems (#715)

ID-number#715
Materialalfalfa stems
Classification ECN Phyllis classification ▸ grass/plant ▸ alfalfa ▸ alfalfa stems
NTA 8003 classification ▸ [200] biomassa uit land- en tuinbouw ▸ [240] gewassen ▸ [249] overige gewassen
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% 9.29
Ash content wt% 4.78 5.27
Volatile matter wt% 71.59 78.92 83.31
Fixed carbon wt% 14.34 15.81 16.69 Calculated

Ultimate Analysis

Carbon wt% 42.79 47.17 49.80 Measured
Hydrogen wt% 5.44 6.00 6.33 Measured
Nitrogen wt% 2.43 2.68 2.83 Measured
Sulphur wt% 0.18 0.20 0.21 Measured
Oxygen wt% 34.64 38.19 40.31 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 15.52 17.36 18.32
Gross calorific value (HHV) MJ/kg 16.93 18.67 19.70
HHVMilne MJ/kg 17.28 19.05 20.11 Calculated

Chemical Analyses

Halides

Chlorine (Cl) mg/kg 4 500.0 4 960.9 5 236.8 Measured

Ash Properties

Ash composition

CO2 wt% (ash) 14.80
SO3 wt% (ash) 1.93
P2O5 wt% (ash) 7.64
SiO2 wt% (ash) 5.79
Fe2O3 wt% (ash) 0.30
Al2O3 wt% (ash) 0.07
CaO wt% (ash) 18.32
MgO wt% (ash) 10.38
Na2O wt% (ash) 1.10
K2O wt% (ash) 28.10
TiO2 wt% (ash) 0.02