A Innovative Method for Evaluating Basswood Pyrolysis Kinetics

摘要

A innovative method to simplify calculation the kinetics model is applied to wood pyrolysis. Thermal degradation of basswood was investigated with thermogravimetry. The thermal kinetic TG analysis of basswood under N_2 atmosphere was studied at the heating rate of 10,20, 30, 90K/min. All the TG curves are divided into four parts which are drying, slow pyrolysis, fast pyrolysis, and carbonization. The third one is employed to determine the parameters for around 69% of the total mass loss occurs in this range. The peak of the composition is according with DTG curve. It validate assumption of reaction stage. According to the developed method, the react order, reaction energy and pre-exponential factor are obtained, which are in the range of 2.8～4.3, 101.7～126.6 kJ/mol and 2.3×10~8～7.0×10~(10) min~(-1), respectively, which are in the range of that reported previously. As a comparison experimental data with calculated data, the well fitting results indicate that this method is appropriate for simulating wood pyrolysis kinetics.