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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >CFD simulation of barium carbonate precipitation in a fluidized bed reactor
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CFD simulation of barium carbonate precipitation in a fluidized bed reactor

机译：CFD模拟的碳酸钡沉淀在流化床反应器中

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摘要

CFD techniques are used to study the precipitation of barium carbonate in a solid-liquid fluidized bed reactor. Experimental analysis of the hydrodynamic behaviour for a neutralization reaction in the fluidized bed column, followed by CFD simulations is carried out using different reaction models. The Eddy Dissipation model, the Eddy Dissipation model-MTS and the Eddy Dissipation Concept micro-mixing models are tested in order to simulate the acid-base instantaneous reaction. The modelling of the precipitation in a fluidized bed reactor is coupled with the Eddy Dissipation model-MTS micro-mixing model and the k-s standard turbulence model. Barium carbonate is chosen as the model substance. The liquid phase reaction rate as well as the nucleation, growth and aggregation kinetics is included in the precipitation model. The discrete method is chosen to solve the population balance equation. The activity coefficient needed to calculate the supersaturation in the kinetic equations is determined using the Bromley's method. A good agreement is obtained between the experimental results and the CFD results.
机译：CFD技术被用来研究降水碳酸钡的固液怜床反应堆。中和水动力行为在流化床反应列,紧随其后使用不同的CFD模拟进行反应模型。涡流损耗model-MTS和艾迪耗散概念micro-mixing模型为了模拟酸碱测试瞬时反应。降水在流化床反应器再加上涡流损耗model-MTSmicro-mixing模型和钴标准湍流模型。模型的物质。率以及成核、生长和包含在聚合动力学降水模型。选择解决人口平衡方程。计算所需的活度系数过度饱和的动力学方程决定使用布罗姆利的方法。实验之间的协议获得结果和CFD结果。

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