Pelletisation of Rye- and Wheat Straw with Additives

S. Narra, S. Dasgupta, P. Ay, T. Zheng & N. Weller
Pelletizing biomass, especially straw and stalky materials, require a product-specific size reduction and liberation. This paper characterizes the cereal straws (rye and wheat) and specifies the necessities for production of energy pellets. The product-specific size reduction was achieved with the help of impact mill and twin-screw extrusion processes. Further, the moisture content and the particle size distribution play an important role in the pelletisation process and also with respect to the energy characteristics. Cereal straw...