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

Fuel 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

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

Calorific Values

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

Chemical Analyses

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

Major elements

Potassium (K) mg/kg (dry) 21 000.0 Measured
Sodium (Na) mg/kg (dry) 1 500.0 Measured
Calcium (Ca) mg/kg (dry) 13 000.0 Measured
Silicon (Si) mg/kg (dry) 38 000.0 Measured
Magnesium (Mg) mg/kg (dry) 1 900.0 Measured
Phosphorus (P) mg/kg (dry) 2 400.0 Measured

Minor elements

Arsenic (As) mg/kg (dry) 1.0
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
Manganese (Mn) mg/kg (dry) 150.0 Measured
Nickel (Ni) mg/kg (dry) 1.6 Measured
Lead (Pb) mg/kg (dry) 14.0 Measured
Vanadium (V) mg/kg (dry) 6.1 Measured
Zinc (Zn) mg/kg (dry) 44.0 Measured
Tellurium (Te) mg/kg (dry) 1.0
Selenium (Se) mg/kg (dry) 1.0
Mercury (Hg) mg/kg (dry) 0.0 Measured

Other elements

Tin (Sn) mg/kg (dry) 10.0 Measured
Antimony (Sb) mg/kg (dry) 1.0

Physical Properties

Commonly used properties

Bulk density (ar) kg/m³ (ar) 500