Kinetic Study on Non-isothermal Pyrolysis of Sucrose Biomass

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• 作者：Chao Wang ; Binlin Dou ; Yongchen Song ; Haisheng Chen ; Mingjun Yang ; Yujie Xu
• 刊名：Energy & Fuels
• 出版年：2014
• 出版时间：June 19, 2014
• 年：2014
• 卷：28
• 期：6
• 页码：3793-3801
• 全文大小：433K
• 年卷期：v.28,no.6(June 19, 2014)
• ISSN：1520-5029

文摘

In this study, the pyrolysis characteristics of sucrose biomass were investigated with a thermogravimetric analysis coupled with gas chromatography (TGA鈥揋C) system at different temperatures and various heating rates. The gas products from sucrose pyrolysis were measured, and the results showed that the gas product consisted of a major amount of CO, CO₂, H₂, and CH₄. The temperature and addition of CaO could greatly affect the gaseous product yields. The distinct phases in the pyrolysis process of sucrose biomass were discussed. An improved iterative Coats鈥揜edfern method was used to evaluate non-isothermal kinetic parameters for sucrose pyrolysis with/without the addition of CaO in different phases, and the activation energies and pre-exponential factors were calculated by means of linear regressions. The calculated results showed that the model with an Avrami鈥揈rofeev mechanism could accurately be used to predict the main phase as well as the other phases for the pyrolysis processes.