In the present work, two types of commercial wood pellets and one
type of control pellets prepared in a laboratory single-die pelleting unit
were thermally treated in a fixed bed unit under the torrefaction conditions.
Density, heating value, hardness, saturated moisture content,
volumetric energy density, and energy yield of those torrefied pellets
were then determined. The densification–torrefaction procedure was
further evaluated by comparison with the quality of torrefied pellets
made from densification of torrefied sawdust.