生物质纤维素、半纤维素和木质素三种伪组分的气化动力学分析。
Gasification kinetic analysis of the three pseudocomponents of biomass-cellulose, semicellulose and lignin.
机构信息
Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, PR China.
Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
出版信息
Bioresour Technol. 2014 Feb;153:223-9. doi: 10.1016/j.biortech.2013.12.021. Epub 2013 Dec 14.
The gasification kinetic analysis of the three pseudocomponents (hemicellulose, cellulose and lignin) of biomass decomposition in the agent of CO2 were investigated. The Multi-peaks method was used to fit the Gaussian distribution model of DTG curves. The Friedman method was used to estimate the effective Eα, and the master plot method was used for the determination of the kinetic model. The results showed that there were two reaction stages for semi-cellulose and lignin. The DTG curves of semicellulose and lignin cannot be fitted by Gaussian distribution model. The Eα were ranged from 80 to 220kJmol(-1) for the three pseudocomponents. The Fn model could describe the kinetic process of stage I of semi-cellulose decomposition. Both cellulose and stage II of semicellulose decomposition could be described by An model and the two reaction stages of the lignin were fitted the Rn model very well.
研究了生物质在 CO2 介质中三种伪组分（半纤维素、纤维素和木质素）分解的气化动力学分析。采用多峰法对 DTG 曲线的高斯分布模型进行拟合。采用 Friedman 法估算有效 Eα，采用主图法确定动力学模型。结果表明，半纤维素和木质素有两个反应阶段。半纤维素和木质素的 DTG 曲线不能用高斯分布模型拟合。三个伪组分的 Eα 范围为 80-220kJmol(-1)。Fn 模型可以描述半纤维素分解的第一阶段的动力学过程。纤维素和半纤维素分解的第二阶段都可以用 An 模型描述，而木质素的两个反应阶段都可以很好地拟合 Rn 模型。
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