Abstract:  In order to study the pyrolysis characteristics of Mongolian oak bark, the crushed bark was heated from room temperature to 800 ℃ by thermogravimetric analyzer. The pyrolysis characteristics of Mongolian oak bark under different conditions were obtained by controlling variable method with particle size, heating rate and experimental atmosphere as variables. Coats-Redfern integral method was used for data analysis. The results show that there are four stages in the pyrolysis process of Mongolian oak bark particles, and the third stage is the main pyrolysis stage; the faster the heating rate is, the more intense the reaction is; when the heating rate is high, the main weight loss stage will be delayed; different particle size of materials will change the total weight loss rate; the reaction of Mongolian oak bark in high-purity air is more intense, which indicates that air is helpful to the pyrolysis process; The pyrolysis of Mongolian oak bark needs less energy and is easy to occur. 

Key words:  , Mongolian oak, bark, pyrolysis characteristics, kinetics