... rapidly consumed by the volatilegases, and the contribution of combustion to the overall char conversion is small. The combustion of char iscontrolled by external diffusion (Regime III) and the ... critical. In both cases, the kinetics, the type of biomass, and the conditions for which the 70 Proceedings of the 20th International Conference on Fluidized Bed CombustionEriksson T., Sippu0.,HottaA,Zhen ... in the case of fluid-dynamics, devolatilisation, oxidation of volatiles, char conversion and comminution processes. There aredifferences, though, such as in the mode of conversion of char and...