Kinetic Analysis of the Main Temperature Stage of Fast Pyrolysis

3rd Annual International Workshop on Materials Science and Engineering

Yang, Xiaoxiao^1 ; Zhao, Yuying^1 ; Xu, Lanshu^1 ; Li, Rui^1

College of Materials Science and Technology, Beijing Forestry University, Beijing

100083, China^1

关键词: Apparent activation energy;    Eucalyptus chips;    Flynn-Wall-Ozawa;    Kinetic analysis;    Non-isothermal condition;    Preexponential factor;    Reaction mechanism;    Thermogravimetric analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/250/1/012035/pdf
DOI  :  10.1088/1757-899X/250/1/012035

来源: IOP

【 摘 要 】

Kinetics of the thermal decomposition of eucalyptus chips was evaluated using a high-rate thermogravimetric analyzer (BL-TGA) designed by our research group. The experiments were carried out under non-isothermal condition in order to determine the fast pyrolysis behavior of the main temperature stage (350-540C) at heating rates of 60, 120, 180, and 360C min-1. The Coats-Redfern integral method and four different reaction mechanism models were adopted to calculate the kinetic parameters including apparent activation energy and pre-exponential factor, and the Flynn-Wall-Ozawa method was employed to testify apparent activation energy. The results showed that estimation value was consistent with the values obtained by linear fitting equations, and the best-fit model for fast pyrolysis was found.