Abstract: Kinetic analysis of pyrolysis processes of pine cone and corn cob was carried out with CoatsRedfern method and Starink isoconversional method. CoatsRedfern method needed the assumption or sifting of the kinetic model， and therefore this paper used Malek method to sift from 10 common kinetic models. The pyrolysis processes of pine cone and corn cob fitted D3 and R2 models， respectively. Starink isoconversional method didn’t need the model assumption， and the activation energy obtained by this method was higher than that by CoatsRedfern method. With Starink isoconversional method， the activation energy of corn cob obtained rarely changed in the whole pyrolysis process， indicating its pyrolysis process can be described by the simple kinetic model， while the activation energy of pine cone was opposite to that of corn cob.

Key words: biomass, pyrolysis, kinetic, CoatsRedfern method, isoconversional method