The Pelletising Proces: the Aspects that Influence Denstity of Wood Pellets

Abstract

Pellets are a modern form of biomass compaction, which offers many opportunities for the development of renewable energies in the 21st century. This paper examined the influence of input parameters on the density of pellets with the use of the real pelletizing machine. Knowledge of the influence of changes in input parameters can effectively affect the output density of pellets so as to maximize and to simultaneously meet the required characteristics of the pellets according to the pellets standards. The building of the measuring point enabled to manufacture our own pellets. Furthermore, were created charts that display the dependence between the density and input factors. The influence of the fraction size and type, humidity content and the type of raw materials and the influence of pressing canal diameter change were examined. Finally, this paper concluded that the output pellets density is very sensitive to changes in input parameters. It is important to use input parameters that contribute to a high concentration of energy per unit volume and the efficient use of machines for production of pellets. As well as it reduces the necessary amount of space for storage.

Keywords

• wood pellets
• process
• biomass
• density