In this paper

a model is presented to describe pyrolysis of biomass in a fluidized bed reactor

which is characterized with reaction routes related to the biomass particles either in dense phase or in dilute phase.Model calculation indicated that the residence time of particles differed greatly from that of gas product

so product distribution from pyrolysis was significantly affected.Agreement between calculation and experimental data justified the model’s predictability in pyrolysis reaction of biomass carried out in the fluidized bed reactor.Based on the calculation

factors including reaction temperature

flow rate of fludizing gas

feed rate of biomass and particle size

were analysed in order to estimate their effects on the results expected from pyrolysis.