rice hulls (#452)

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ID-number#452
Materialrice hulls
Classification ECN Phyllis classification ▸ husk/shell/pit ▸ rice ▸ rice hulls
NTA 8003 classification ▸ [500] biomassa uit de industrie ▸ [520] schillen/vliezen/pitten ▸ [523] rijstvliezen
Ash type ashed at 815 degC
Submitter organisationECN (Netherlands)
Remarks(Australia)
LiteratureN. Magasiner and J. W. de Kock: Design criteria for fibrous fuel fired boilers. Energy World (8-9) pp. 4-12 (1987).

Values

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

Main biomass properties

Proximate analysis
Moisture content wt% 8.00
Ash content wt% 21.50 23.37
Volatile matter wt% 35.70 38.80 50.63
Fixed carbon wt% 34.80 37.83 49.37 Calculated

Ultimate analysis (macroelements)
Carbon wt% 34.83 37.86 49.40 Measured
Hydrogen wt% 4.37 4.75 6.20 Measured
Oxygen wt% 30.81 33.49 43.70 Calculated
Nitrogen wt% 0.21 0.23 0.30 Measured
Sulphur wt% 0.28 0.31 0.40 Measured
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Heating value
Net calorific value (LHV) MJ/kg 11.10 12.27 16.02
Gross calorific value (HHV) MJ/kg 12.25 13.31 17.37
HHVMilne MJ/kg 13.70 14.89 19.43 Calculated

Ash melting behaviour

American standard method, measured in oxidizing conditions
IDT (initial deformation temperature) °C 1 400
HT (hemispherical temperature) °C 1 400
FT (fluid temperature) °C 1 400

Ash Properties

Ash composition
SiO2 wt% (ash) 95.60
Fe2O3 wt% (ash) 0.10
Al2O3 wt% (ash) 2.00
CaO wt% (ash) 0.20
MgO wt% (ash) 0.20
Na2O wt% (ash) 0.10
K2O wt% (ash) 1.20