Detailed kinetic modeling of the thermal degradation of lignins
Detailed kinetic modeling of the thermal degradation of lignins
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DOI：
10.1016/j.biombioe.2009.10.018
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发表时间：
2010-03-01
影响因子：
6
通讯作者：
Ranzi, E.
中科院分区：
文献类型：
--
作者：
Faravelli, T.;Frassoldati, A.;Ranzi, E.
这项动力学工作的目的是为了更好地了解木质素和生物质的热解，不仅是在脱挥发速率方面，而且是在释放的挥发性物质方面。木质素结构及其降解机制的复杂性意味着必须使用适合处理大量初始，中间和最终产品的集总方法。尽管有这些简化，所提出的半详细的动力学方案涉及500个基本反应和集中反应中的大约100种分子和自由基。已经证明，该木质素脱挥发模型正确地预测了降解速率和释放产物的细节。这项工作构成了一个初始的但重要的一步，以获得一个完整的生物质脱挥发动力学方案。2009爱思唯尔有限公司版权所有。
The aim of this kinetic work is to provide a better understanding of the pyrolysis of lignin and biomasses not only in terms of devolatilazation rate but also of the volatile species released. The complexity of both lignin structure and its degradation mechanism meant that a lumping approach suitable for handling the huge amount of initial, intermediate and final products had to be used. Despite these simplifications, the proposed semi-detailed kinetic scheme involves about 100 molecular and radical species in 500 elementary and lumped reactions. It has already been proved that this lignin devolatilization model correctly predicts the degradation rates and the detail of the released products. This work constitutes an initial yet significant step towards deriving a complete kinetic scheme of biomass devolatilization. (C) 2009 Elsevier Ltd. All rights reserved.