Non-isothermal kinetics of biomass waste pyrolysis by TG-MS/DSC

Jinbo Du; Binlin Dou; Hua Zhang; Kai Wu; Daoxing Gao; Yadong Wang; Haisheng Chen; Yujie Xu

Carbon Capture Science & Technology (Mar 2023)

Non-isothermal kinetics of biomass waste pyrolysis by TG-MS/DSC

Jinbo Du,
Binlin Dou,
Hua Zhang,
Kai Wu,
Daoxing Gao,
Yadong Wang,
Haisheng Chen,
Yujie Xu

Affiliations

Jinbo Du: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Binlin Dou: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; Corresponding author.
Hua Zhang: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Kai Wu: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Daoxing Gao: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Yadong Wang: School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Haisheng Chen: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Yujie Xu: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Journal volume & issue: Vol. 6
p. 100097

Abstract

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The non-isothermal kinetics and pyrolysis characteristics of biomass waste including camphor wood (CW), pure glycerol (PG) and a blend (1:1 mass ratio) (PG-CW) were studied by coupling TG-MS/DSC techniques. The samples were heated from ambient temperature to 700 °C at different heating rates (10, 15, 20 and 25 °C/min) in a nitrogen atmosphere. The mass loss during pyrolysis and the evolution of gas products were studied. The improved Coats-Redfern method was used to obtain non-isothermal kinetic parameters for samples pyrolysis, and the activation energies and the pre-exponential factors were estimated iteratively by regression to improve their accuracy. PG had only one main pyrolysis phase, while CW had two main pyrolysis phases. The results showed that adding PG into CW reduced the residue and increased the amount of gas released after co-pyrolysis. The non-isothermal kinetic model based on the improved iterative Coats-Redfern method entirely fitted the pyrolysis phases of CW, PG, and PG-CW. The suitable models for the second, third, and fourth phases of blend were nucleation, nucleation, and one-dimensional diffusion, respectively. Activation energy values for the three phases were 67.47–82.48, 81.13–104.43 and 145.45–204.86 kJ/mol, respectively. The addition of PG promoted the pyrolysis process of CW.

Published in Carbon Capture Science & Technology

ISSN: 2772-6568 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Environmental technology. Sanitary engineering
Website: https://www.journals.elsevier.com/carbon-capture-science-and-technology

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