Wood pellets specification
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Wood fuel granules (pellets) are refined and environmentally friendly wood fuel. In appearance they remind small cylinders with a diameter of 6-8 mm and length up to 50 mm.
Wood fuel granules are manufactured by pressing shredded wood (sawdust, shavings, and chips) using high pressure without any adding any addictives or adhesives. As a binding component, lignin is used which plastifies during the granulation process at high temperature. Therefore pellets are an environmentally pure product that differs from ordinary wood only in low humidity content (pellet humidity content is not more than 12%, as compared to 30-50% humidity of ordinary firewood) and great density (pellet density is one and a half time bigger than of ordinary wood). Pellets are intended for use as fuel in automated boiler plants. |
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Parameter |
Measurement unit |
Technical conditions |
DIN 51731 |
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Diameter |
mm |
6 - 8 |
4 - 10 |
|
Lengh |
mm |
<50 |
<50 |
|
Density |
Kg/dm3 |
>1.0 – 1.4 |
>1.0 – 1.4 |
|
Humidity |
% |
<12 |
<12 |
|
Bulk weight |
Kg/m3 |
640 |
650 |
|
Ash content |
% |
0.55 – 0.8 |
<1.5 |
|
Calories |
Mj |
17.83 |
17.5 – 19.5 |
|
Sulphur content |
% |
0.03 |
<0.03 |
