rice husk (#2876)

ID-number#2876
Materialrice husk
Classification ECN Phyllis classification ▸ husk/shell/pit ▸ rice ▸ rice husk
NTA 8003 classification ▸ [500] biomassa uit de industrie ▸ [520] schillen/vliezen/pitten ▸ [523] rijstvliezen
Ash type600°C according to ASTM E 1755. Ash melting according to DIN 51730. Ash contains 0.02% ZnO.
Submitter organisationECN (Netherlands)
Submission date2010-07-12
RemarksProximate analyses and calorific value according to ASTM standards. Extractives according to ASTM D 1105, lignin Van Soest, alpha cellulose (25.2%) TAPPI T203 om-88. Holocellulose 44.9%.
LiteratureH. Haykiri-Acma, S. Yaman, S. Kucukbayrak: Effect of biomass on temperatures of sintering and initial deformation of lignite ash. Fuel 89 (2010) 3063-3068.

Values

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

Fuel Properties

Proximate Analysis

Moisture content wt% 11.20
Ash content wt% 18.29 20.60
Volatile matter wt% 48.31 54.40 68.51
Fixed carbon wt% 22.20 25.00 31.49 Calculated

Ultimate Analysis

Carbon wt% 27.92 31.44 39.60 Measured
Hydrogen wt% 4.23 4.76 6.00 Measured
Nitrogen wt% 0.49 0.56 0.70 Measured
Oxygen wt% 37.86 42.64 53.70 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 10.70 12.36 15.57
Gross calorific value (HHV) MJ/kg 11.90 13.40 16.88
HHVMilne MJ/kg 10.29 11.59 14.59 Calculated

Chemical Analyses

Biochemical composition

Lignin wt% (dry) 34.80 van Soest
Extractives EtOH/toluene wt% (dry) 9.80 Measured
Total ash + biochemical wt% (dry) 65.20 Calculated

Physical Properties

Ash melting behaviour

American standard method, measured in oxidizing conditions

IDT (initial deformation temperature) °C 1 269
SOT (softening or spherical temperature) °C 1 370

Ash Properties

Ash composition

SO3 wt% (ash) 0.77
Cl wt% (ash) 0.73
P2O5 wt% (ash) 0.87
SiO2 wt% (ash) 89.39
Fe2O3 wt% (ash) 0.40
Al2O3 wt% (ash) 0.22
CaO wt% (ash) 1.30
MgO wt% (ash) 0.57
Na2O wt% (ash) 0.35
K2O wt% (ash) 5.04
TiO2 wt% (ash) 0.02
Mn mg/kg (ash) 1 859.0
Cr mg/kg (ash) 342.0