Coconut trunk (#2828)

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ID-number#2828
MaterialCoconut trunk
Classification ECN Phyllis classification ▸ untreated wood ▸ tropical hard wood
NTA 8003 classification ▸ [100] hout ▸ [110] vers hout ▸ [120] loofhout ▸ [125] hard loofhout
Submitter organisationECN (Netherlands)
Submission date2008-08-04
RemarksSlagging index 0.03. Fouling factor 1.35. Data made available by Kingdom of Tonga
LiteratureA.H. Knight, Certificate of analysis, on behalf of Kingdom of Tonga, July 2008

Values

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

Fuel Properties

Proximate Analysis
Moisture content wt% 49.00
Ash content wt% 5.87 11.50
Volatile matter wt% 36.72 72.00 81.36
Fixed carbon wt% 8.42 16.50 18.64 Calculated

Ultimate Analysis
Carbon wt% 21.62 42.40 47.91 Measured
Hydrogen wt% 2.62 5.13 5.80 Measured
Nitrogen wt% 0.02 0.03 0.03 Measured
Sulphur wt% 0.02 0.04 0.05 Measured
Oxygen wt% 20.81 40.80 46.10 Calculated
Total (with halides) wt% 100.01 100.01 100.01 Calculated

Calorific Values
Net calorific value (LHV) MJ/kg 7.28 16.63 18.79
Gross calorific value (HHV) MJ/kg 9.05 17.75 20.06
HHVMilne MJ/kg 8.26 16.19 18.29 Calculated

Chemical Analyses

Halides
Chlorine (Cl) mg/kg 561.0 1 100.0 1 242.9 Measured

Minor elements
Arsenic (As) mg/kg (dry) 0.1
Cadmium (Cd) mg/kg (dry) 0.1 Measured
Cobalt (Co) mg/kg (dry) 1.5 Measured
Chromium (Cr) mg/kg (dry) 23.2 Measured
Copper (Cu) mg/kg (dry) 7.5 Measured
Manganese (Mn) mg/kg (dry) 95.6 Measured
Nickel (Ni) mg/kg (dry) 15.2 Measured
Lead (Pb) mg/kg (dry) 1.3 Measured
Vanadium (V) mg/kg (dry) 7.5 Measured
Zinc (Zn) mg/kg (dry) 21.9 Measured
Mercury (Hg) mg/kg (dry) 0.0 Measured

Other elements
Antimony (Sb) mg/kg (dry) 0.6 Measured

Physical Properties

Ash melting behaviour

American standard method, measured in reducing conditions
IDT (initial deformation temperature) °C 1 170
SOT (softening or spherical temperature) °C 1 200
HT (hemispherical temperature) °C 1 230
FT (fluid temperature) °C 1 300

Ash Properties

Ash composition
SO3 wt% (ash) 0.87
P2O5 wt% (ash) 3.55
SiO2 wt% (ash) 42.66
Fe2O3 wt% (ash) 8.28
Al2O3 wt% (ash) 13.94
CaO wt% (ash) 11.74
MgO wt% (ash) 5.37
Na2O wt% (ash) 2.05
K2O wt% (ash) 10.41
TiO2 wt% (ash) 0.96