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Correlations of kinetic parameters in biomass pyrolysis with solid residue yield and lignin content

机译：生物质热解动力学参数与固体残渣得率和木质素含量的相关性

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摘要

A kinetic analysis of the pyrolysis of various types of biomass (trunk, bark, leaf, shell, herbage, food dregs, and polysaccharide) as well as synthetic biomass consisting of cellulose and lignin was performed using thermogravimetric analysis data. The reaction rates of biomass pyrolysis were found to be expressed simply by a single nth-order reaction model. The kinetic parameters (frequency factor k_0, activation energy E, and reaction order n) were estimated first by differentiating the thermogravimetric curves and then by the nonlinear estimation method. The rate parameters of the pyrolysis of both 38 biomass samples and 9 synthetic biomass samples were successfully correlated in terms of the solid residue yield ω; charts are presented showing the correlations. Furthermore, a linear correlation was found between ω and the lignin content L in the woody biomass. This allows the kinetic parameters of biomass pyrolysis to be estimated using the value of ω, which is obtained from thermogravimetric measurements or estimated from the value of L for the biomass feedstock.
机译：使用热重分析数据对各种类型的生物质（树干，树皮，叶，壳，牧草，食物残渣和多糖）以及由纤维素和木质素组成的合成生物质进行热解动力学分析。发现生物质热解的反应速率仅通过单个n阶反应模型来表达。首先通过微分热重曲线，然后通过非线性估算方法估算动力学参数（频率因子k_0，活化能E和反应阶数n）。根据固体残渣产率ω，成功地关联了38个生物质样品和9个合成生物质样品的热解速率参数。提供了显示相关性的图表。此外，在木质生物质中ω和木质素含量L之间发现线性相关。这允许使用从热重测量获得的值或从生物质原料的L值估算的ω值估算生物质热解的动力学参数。

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  • 来源
    《Fuel》 |2011年第1期|p.104-112|共9页
  • 作者

    Kenji Hashimoto; Isao Hasegawa; Junichi Hayashi; Kazuhiro Mae;

  • 作者单位

    Department of Chemical Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510,Japan;

    Department of Chemical Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510,Japan;

    Department of Chemical, Energy and Environmental Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan;

    Department of Chemical Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510,Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biomass; pyrolysis; kinetic parameter; correlation; thermogravimetric analysis;

    机译：生物质热解动力学参数相关性热重分析;

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