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首页> 外文期刊>Mathematical Theory and Modeling >Analysis of Biomass Pyrolysis Product Yield Distribution in Thermally Thin Regime at Different Heating Rates
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Analysis of Biomass Pyrolysis Product Yield Distribution in Thermally Thin Regime at Different Heating Rates

机译：不同加热速率下热稀薄区生物质热解产物得率分布分析

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A better understanding of biomass pyrolysis process at various thermal regimes is fundamental to the optimization of biomass thermochemical conversion processes. In this research work, the behaviour of biomass pyrolysis in thermally thin regime was numerically investigated at different heating rates (1, 5, 10 and 20 K/s). A kinetic model, consisting of five ordinary differential equations, was used to simulate the pyrolysis process. The model equations were coupled and simultaneously solved by using fourth-order Runge-Kutta method. The concentrations of the biomass sample (Maple wood) and product species per time were simulated. Findings revealed that tar yield increased with increase in heating rate. Char yield, however, decreased with increase in heating rate. Results also showed that the extent of secondary reactions, which influenced gas yield concentration, is a function of residence time and temperature. This model can be adopted for any biomass material when the kinetic parameters of the material are known. Keywords: Biomass, pyrolysis, kinetic model, thermally thin regime
机译：更好地了解各种热态下的生物质热解过程是优化生物质热化学转化过程的基础。在这项研究工作中，在不同的加热速率（1、5、10和20 K / s）下，对热稀薄状态下生物质的热解行为进行了数值研究。由五个常微分方程组成的动力学模型被用来模拟热解过程。使用四阶Runge-Kutta方法耦合并同时求解模型方程。模拟了每次生物质样品（枫木）和产品种类的浓度。研究发现，焦油收率随加热速率的增加而增加。但是，焦炭收率随着加热速度的增加而降低。结果还表明，影响气体产率浓度的副反应程度是停留时间和温度的函数。当已知材料的动力学参数时，该模型可用于任何生物质材料。关键词：生物质热解动力学模型热稀薄状态

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