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Biomass Chemical Engineering ›› 2022, Vol. 56 ›› Issue (5): 37-42.doi: 10.3969/j.issn.1673-5854.2022.05.006

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Thermal Behavior and Kinetic Analysis for Co-pyrolysis of Camellia oleifera Shell and Polypropylene

Xingli DENG1,2, Shaojian JIANG1, Zhihong XIAO2,*(), Changzhu LI2, Xudong LIU2,3, Ying LI1,4   

  1. 1. School of Energy Science and Engineering, Central South University, Changsha 410083, China
    2. State Key Laboratory of Utilization of Woody Oil Resources, Hunan Academy of Forestry, Changsha 410004, China
    3. Hunan Provincial Key Laboratory of Oils & Fats Molecular Structure and Function, Changsha 410004, China
    4. Key Laboratory of National Forestry and Grassland Administration on Utilization Science for Southern Woody Oil Resources, Changsha 410004, China
  • Received:2022-01-24 Online:2022-09-30 Published:2022-09-27
  • Contact: Zhihong XIAO E-mail:xiaozhihong@hnlky.cn

Abstract:

To study the effects of mixing ratio on the co-pyrolysis thermal behavior and kinetic parameters of Camellia oleifera shell(CS) and polypropylene(PP), CS and PP were mixed at different mass ratios(3∶7, 5∶5 and 7∶3) to carry out thermogravimetric experiment and kinetic analysis from 50 to 800 ℃ with the heating rates of 5, 10, 15 and 20 ℃/min. The result of thermogravimetric experiment indicated that the co-pyrolysis of mixed samples could be divided into two stages. When the temperature was lower than 352 ℃, the pyrolysis of CS played a leading role in the pyrolysis of mixed samples and PP promoted the pyrolysis of CS. When the temperature was higher than 352 ℃, the pyrolysis of PP dominated the pyrolysis of mixed samples and the pyrolysis of CS played an inhibitory role. The results of kinetic analysis showed that the FWO method was suitable for the kinetic analysis of pyrolysis and co-pyrolysis of CS and PP, and the average apparent activation energy of the mixed samples with a mass ratio of 3∶7 between CS and PP was the lowest(217.04 kJ/mol), which was 54.3% lower than that of CS pyrolysis alone(474.94 kJ/mol).

Key words: co-pyrolysis, thermogravimetric analysis, kinetic analysis, Camellia oleifera shell, polypropylene

CLC Number: