cotton seed husks (#370)

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ID-number#370
Materialcotton seed husks
Classification ECN Phyllis classification ▸ husk/shell/pit ▸ others
NTA 8003 classification ▸ [500] biomassa uit de industrie ▸ [520] schillen/vliezen/pitten ▸ [529] overige schillen/vliezen/pitten
Ash type ashed at 815 degC
Submitter organisationECN (Netherlands)
RemarksIsrael
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

Fuel Properties

Proximate Analysis
Moisture content wt% 9.70
Ash content wt% 2.57 2.85
Volatile matter wt% 68.70 76.08 78.31
Fixed carbon wt% 19.03 21.07 21.69 Calculated

Ultimate Analysis
Carbon wt% 43.78 48.48 49.90 Measured
Hydrogen wt% 5.53 6.12 6.30 Measured
Nitrogen wt% 0.88 0.97 1.00 Measured
Sulphur wt% 0.09 0.10 0.10 Measured
Oxygen wt% 37.46 41.48 42.70 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values
Net calorific value (LHV) MJ/kg 15.56 17.49 18.01
Gross calorific value (HHV) MJ/kg 17.00 18.83 19.38
HHVMilne MJ/kg 17.60 19.49 20.06 Calculated

Physical Properties

Ash melting behaviour

American standard method, measured in oxidizing conditions
IDT (initial deformation temperature) °C 1 390
HT (hemispherical temperature) °C 1 400
FT (fluid temperature) °C 1 400

Ash Properties

Ash composition
SiO2 wt% (ash) 0.40
Fe2O3 wt% (ash) 0.90
Al2O3 wt% (ash) 0.60
CaO wt% (ash) 7.80
MgO wt% (ash) 12.10
Na2O wt% (ash) 1.40
K2O wt% (ash) 42.00