| The characteristics and mechanisms of cellulosic-biomass pyrolysis were introduced in this paper.With the pyrolysis technology,fuels of high calorific capacity,such as charcoal,bio-oil and gas,can be produced,which have an energy density 5~10 times higher than the original organics.The influence of operating conditions,such as temperature,heating rate,particle characteristics(class,molecular structure,particle size and particle shape,etc),residential time,pressure,etc.,on the biomass-pyrolysis process was discussed.Meanwhile,the effects of operation conditions on the composition and characteristics of biomass-pyrolysis products were analyzed.The key problems of biomass pyrolysis were indicated. |