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Effect of design parameters on system mixing for a micro fluidized bed reactor using computational fluid dynamics simulation
Brazilian Journal of Chemical Engineering ( IF 1.2 ) Pub Date : 2020-10-16 , DOI: 10.1007/s43153-020-00069-z
Ratchanon Piemjaiswang , Jaruwan Charoenchaipet , Thapanee Saelau , Pornpote Piumsomboon , Benjapon Chalermsinsuwan

Nowadays, conventional multiphase flow reactors have many operational problems, non-uniform distribution of gas–solid particles and low heat and mass transfers. To overcome these operation problems, this study proposes the use of a micro fluidized bed reactor, verifying its feasibility with a computational fluid dynamics (CFD) simulation. The other advantages of the micro fluidized bed reactor are increased surface area and easy scale-up. However, the literature data about the CFD simulation of micro fluidized bed reactors and the effects of parameters on system mixing inside this reactor are still limited. This study objective is thus to develop the CFD simulation of a micro fluidized bed reactor and to explore the effect of design parameters on system mixing using statistical design and analysis of experimental methodology. The design parameters consist of the diameter of the reactor, percent inlet opening area and height of the reactor. The suitable system mixing will have a positive effect on heat and mass transfer rates, as well as the chemical reaction rate. The results reveal that a micro fluidized bed reactor with diameter of 5 mm, percent inlet opening area of 100% and reactor height of 6 mm gives the best uniform distribution of gas–solid particles.

中文翻译:

使用计算流体动力学模拟设计参数对微流化床反应器系统混合的影响

如今,传统的多相流反应器存在许多操作问题,气固颗粒分布不均匀,传热传质低。为了克服这些操作问题,本研究建议使用微型流化床反应器,并通过计算流体动力学 (CFD) 模拟验证其可行性。微流化床反应器的其他优点是表面积增加和易于放大。然而,关于微流化床反应器的CFD模拟以及参数对反应器内部系统混合的影响的文献数据仍然有限。因此,本研究的目标是开发微型流化床反应器的 CFD 模拟,并使用统计设计和实验方法分析来探索设计参数对系统混合的影响。设计参数包括反应器直径、入口开口面积百分比和反应器高度。合适的系统混合将对传热和传质速率以及化学反应速率产生积极影响。结果表明,直径为 5 mm、入口开口面积百分比为 100% 和反应器高度为 6 mm 的微型流化床反应器可提供最佳的气固颗粒均匀分布。
更新日期:2020-10-16
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