油茶壳热解的TG-FT-IR分析及动力学研究

doi:10.3969/j.issn.1673-5854.2015.04.002

Abstract

Abstract: Pyrolysis of camellia shell was studied by using thermogravimetric analyzer coupled with Fourier transform infrared spectroscopy(TG-FT-IR).The activation energies of camellia shell pyrolysis depending on the conversion rate were calculated by two Model-free methods,namely Kissinger-Akahira-Sunose(KAS) and Flynn-Wall-Ozawa(FWO),respectively.The results indicated that the pyrolysis process of camellia shell was divided into four stages,i.e.,dehydration,decomposition of hemicellulose,decomposition of cellulose and the secondary degradation of lignin.The main components of volatiles were H₂O,CO₂,CO,and CH₄,along with kinds of organics,such as aldehydes,acids and ketones.The content of each component at different pyrolysis temperatures was different.The activation energies of camellia shell pyrolysis estimated by KAS and FWO were similar.They rose with the increase of the conversion rate.

Key words: camellia shell, pyrolysis, TG-FT-IR, kinetics

CLC Number:

GU Jie, LIU Bin, ZHANG Qi-sheng, ZHOU Jian-bin. TG-FT-IR Analysis and Kinetics Study of Camellia Shell Pyrolysis[J]. bce, 2015, 49(4): 7-13.

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TG-FT-IR Analysis and Kinetics Study of Camellia Shell Pyrolysis

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