Sawdust used to make biomass pellets

There are many raw materials of biomass pellet mill, such as wood residues and agro-residuses,
Wood residues can be used as energy or feed material for other energy products such as wood pellet, charcoal. And sawdust is mostly used as feedstock for pellet production because of its small size (it doesn’t require additional preprocessing like crushing before feed into wood pellet mill). 
The heating value of wood biomass has relatively little variation, it depends on the composition of the wood. Energy content is proportional to the dry-weight of wood; so higher density woods have higher calorific values. In general, softwoods have higher heating values than hardwoods. Moisture content also affects the potential heating value, the drier the fuel, the higher the heating value. The table below is the heating values for several types of woody residues. We can see that the moisture content of sawdust is relatively low, so that its heat value is 18.5-19.0MJ/Kg which ranks in the second place among these kinds of woody biomass. 
With many sawdust and and one biomass pellet mill, you can produce the
sawdust pellets.
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Erin Jiang
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