cotton stalks (#381)

ID-number#381
Materialcotton stalks
Classification ECN Phyllis classification ▸ grass/plant ▸ cotton ▸ cotton stalks
NTA 8003 classification ▸ [200] biomassa uit land- en tuinbouw ▸ [220] stro ▸ [229] overig stro
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% 16.80
Ash content wt% 3.80 4.57
Volatile matter wt% 57.30 68.87 72.17
Fixed carbon wt% 22.10 26.56 27.83 Calculated

Ultimate Analysis

Carbon wt% 42.56 51.15 53.60 Measured
Hydrogen wt% 4.13 4.96 5.20 Measured
Nitrogen wt% 1.03 1.24 1.30 Measured
Sulphur wt% 0.79 0.95 1.00 Measured
Oxygen wt% 30.89 37.12 38.90 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 13.07 16.20 16.98
Gross calorific value (HHV) MJ/kg 14.38 17.28 18.11
HHVMilne MJ/kg 16.14 19.40 20.33 Calculated

Physical Properties

Ash melting behaviour

American standard method, measured in oxidizing conditions

FT (fluid temperature) °C 1 200

Ash Properties

Ash composition

SiO2 wt% (ash) 8.40
Fe2O3 wt% (ash) 0.50
Al2O3 wt% (ash) 0.80
CaO wt% (ash) 16.40
MgO wt% (ash) 5.20
Na2O wt% (ash) 2.00
K2O wt% (ash) 30.00