Tar formation variations during fluidised bed pyrolytic biomass conversion
Tar formation variations during fluidised bed pyrolytic biomass conversion
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DOI：
10.1016/j.proci.2012.06.054
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
J. Bruchmüller;K. Luo;B. Wachem
中科院分区：
文献类型：
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作者：
J. Bruchmüller;K. Luo;B. Wachem
在100 g/h流化床反应器中，采用三维欧拉/拉格朗日模拟方法研究了生物质的快速热解过程。优化快速热解生产生物油的总体目标在很大程度上取决于流化床反应器内的热化学降解过程。模拟中生物质和沙粒的离散表示将精确的数值建模与再现实验中看到的现实现象联系起来。在此，流体动力学床行为导致在不同时间注入的生物质颗粒批次之间的温度变化。研究发现，这种差异影响了瞬时焦油释放，导致焦油量和质量的较大差异。
A 3D Eulerian/Lagrangian simulation incorporating multi-step reaction mechanisms has been used to study fast pyrolysis of biomass in a 100g/h fluidised bed reactor. The overall goal to optimise the production of bio-oil from fast pyrolysis is largely dependent on the thermochemical degradation process inside fluidised bed reactors. The discrete representation of biomass and sand particles in the simulation bridges accurate numerical modelling with reproducing realistic phenomena seen experimentally. Herein, the hydrodynamic bed behaviour causes temperature variations among batches of biomass particles injected at different times. It is found that such disparity affects the instantaneous tar release, causing relatively large differences in tar quantity and quality.