grass pellets (#883)

ID-number#883
Materialgrass pellets
Classification ECN Phyllis classification ▸ grass/plant ▸ verge grass ▸ grass pellets
NTA 8003 classification ▸ [200] biomassa uit land- en tuinbouw ▸ [210] gras ▸ [213] bermgras
Ash typeISO 1171 (815 degC)
Submitter organisationECN (Netherlands)
Remarkstested in ECN CFB gasifier (BIVKIN); values in report differ because of averaging over analysis results of ID 883, 1117 and 1118; elemental analysis for ID 883 only
LiteratureJ. W. Vermeulen and A. van der Drift: Brandstoffen uit reststromen voor circulerend wervelbedvergassing, rapportage fase 2, (non-confidential version, in Dutch), Haarlem, NV Afvalzorg (1998).

Values

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

Main biomass properties

Proximate analysis

Moisture content wt% 7.44
Ash content wt% 16.38 17.70
Volatile matter wt% 60.16 65.00 78.98
Fixed carbon wt% 16.01 17.30 21.02 Calculated

Ultimate analysis (macroelements)

Carbon wt% 38.41 41.50 50.43 Measured
Hydrogen wt% 4.33 4.68 5.69 Measured
Oxygen wt% 30.45 32.90 39.98 Calculated
Nitrogen wt% 2.03 2.19 2.66 Measured
Sulphur wt% 0.22 0.24 0.29 Measured
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Halides

Chlorine (Cl) mg/kg 7 326.1 7 915.0 9 617.3 Measured
Fluorine (F) mg/kg 25.9 28.0 34.0 Measured

Heating value

Net calorific value (LHV) MJ/kg 14.44 15.79 19.19
Gross calorific value (HHV) MJ/kg 15.56 16.81 20.43
HHVMilne MJ/kg 14.74 15.92 19.35 Calculated

Trace elements composition

Arsenic (As) mg/kg (dry) 1.0
Calcium (Ca) mg/kg (dry) 13 000.0 Measured
Cadmium (Cd) mg/kg (dry) 1.0
Cobalt (Co) mg/kg (dry) 1.2 Measured
Chromium (Cr) mg/kg (dry) 11.0 Measured
Copper (Cu) mg/kg (dry) 10.0 Measured
Mercury (Hg) mg/kg (dry) 0.0 Measured
Potassium (K) mg/kg (dry) 21 000.0 Measured
Magnesium (Mg) mg/kg (dry) 1 900.0 Measured
Manganese (Mn) mg/kg (dry) 150.0 Measured
Sodium (Na) mg/kg (dry) 1 500.0 Measured
Nickel (Ni) mg/kg (dry) 1.6 Measured
Phosphorus (P) mg/kg (dry) 2 400.0 Measured
Lead (Pb) mg/kg (dry) 14.0 Measured
Antimony (Sb) mg/kg (dry) 1.0
Selenium (Se) mg/kg (dry) 1.0
Silicon (Si) mg/kg (dry) 38 000.0 Measured
Tin (Sn) mg/kg (dry) 10.0 Measured
Tellurium (Te) mg/kg (dry) 1.0
Vanadium (V) mg/kg (dry) 6.1 Measured
Zinc (Zn) mg/kg (dry) 44.0 Measured

Physical Properties

Commonly used properties

Bulk density (ar) kg/m³ (ar) 500