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首页> 外文会议>AIChE Meeting >Numerical Simulation of mixing of a binary mixture consisting of spherical wooden particles and sand in a thin rectangular bubbling fluidized bed: effects of the wall boundary conditions and the inter-particle drag model
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Numerical Simulation of mixing of a binary mixture consisting of spherical wooden particles and sand in a thin rectangular bubbling fluidized bed: effects of the wall boundary conditions and the inter-particle drag model

机译：薄矩形鼓泡流化床中球形木质颗粒和砂组成的二元混合物混合的数值模拟：墙边界条件的影响及颗粒拖曳模型

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摘要

Biomass is a renewable energy resource with increasing potential because it is abundant and widely distributed. Energy crops, agricultural byproducts or forest residues can be utilized in gasification processes to produce syngas, which can be further processed to liquid fuels. Owing to the favorable heat and mass transfer rates obtained in fluidized bed reactors, they are the most widely used type of gasifier for biomass feedstocks. The differences in size and density of biomass and inert particles can lead to a non-uniform distribution across the bed under certain conditions, resulting in a segregated solids mixture with unfavorable temperature distribution and deteriorating reactivity causing lower product yields. Hence, investigation of mixing and segregation dynamics in binary mixtures of biomass and sand is an important step towards the proper description of the full reactive multiphase flow system.
机译：生物质是一种可再生能源，具有较大的潜力，因为它具有丰富和广泛的分布。能量作物，农业副产物或森林残留物可用于气化过程以生产合成气，这可以进一步加工成液体燃料。由于在流化床反应堆中获得的良好热量和传质速率，它们是最广泛使用的生物质原料的气化器。生物质和惰性颗粒的尺寸和密度的差异可以在某些条件下在床上产生不均匀的分布，导致具有不利温度分布的分离的固体混合物和导致产物产率更低的反应性劣化。因此，在生物质和沙子的二元混合物中对混合和分离动力学的调查是朝着完全反应性多相流动系统的正确描述的重要步骤。

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