Combustion Behavior of Pyrolyzed and Original Wood Pellet in Agitated Bed

Biomass is any material derived from plant life. Typical biomass resources are wood, energy crops, agricultural wastes and municipal wastes. Biomass energy is particularly attractive nowadays because of its inherent nature of being environmentally friendly and renewable. An increasing use of renewable energy sources is an important issue in future market to solve the CO2 problem which contributes to the Greenhouse effect. Today fossil fuels are replaced by biomass because of this advantage. New and upgraded biomass fuels have become more common and especially fuel pellets are well suited for the residential market. The objective of this work is to evaluate wood residues for pellet and solid product from wood pellet pyrolysis and research the combustion behavior of samples in both fixed and agitated bed. The effect of agitation on combustion time of volatile matter and carbon and also carbon combustion rate was investigated and compared with those found by using a fixed bed. It was observed that burning time of volatile matter of all the chars under agitation was longer then obtained with a fixed bed The carbon combustion rate of original wood pellet was determined higher than char, mainly due to the high volatile matter content.