Numerical study of fast pyrolysis of woody biomass in a gravity‐driven reactor
Numerical study of fast pyrolysis of woody biomass in a gravity‐driven reactor
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DOI：
10.1002/ep.10389
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发表时间：
2009-10
影响因子：
2.8
通讯作者：
H. Choi;Y. Choi;Seock-Joon Kim
中科院分区：
文献类型：
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作者：
H. Choi;Y. Choi;Seock-Joon Kim
在本研究中，应用计算流体动力学研究重力驱动反应器中木质生物质的快速热解特性。采用欧拉-欧拉方法，包括三种气体和三种固相，用于固体和气体之间的多相反应流场。采用考虑二次焦油裂解机理的两阶段半全局反应动力学来模拟热解反应。研究了反应器的流动和热解反应特性，并评估了反应器中流向位置的木质生物质热解反应速率。此外，改变入口条件和倾斜角度以研究它们对反应的影响。从预测结果可以看出，生物质的传热主要由颗粒的混合控制，这影响了最终的热解反应。 © 2009 美国化学工程师学会环境进展，2009
In the present study, computational fluid dynamics is applied to investigate fast pyrolysis characteristics of woody biomass in a gravity‐driven reactor. A Eulerian‐Eulerian approach is adopted, including three gas species and three solid phases, for multiphase reacting flow fields between solid and gas. Two‐stage semiglobal reaction kinetics considering the secondary tar cracking mechanism is used for simulation of the pyrolysis reaction. The flow and pyrolysisreaction characteristics of the reactor are investigated, and the reaction rates of woody biomass pyrolysis are evaluated for streamwise locations in the reactor. Also, the inlet condition and inclination angle are changed to study their effects on the reaction. From the predicted results, it is seen that the heat transfer to biomass is governed mainly by mixing of particles, and this influences the final pyrolysis reaction. © 2009 American Institute of Chemical Engineers Environ Prog, 2009