Development of flow mesoscale modeling of the gas-liquid-solid fluidized beds

doi:10.11949/0438-1157.20211854

Abstract

Abstract:

The gas-liquid-solid fluidized bed is an important multi-phase reactor and has a wide range of applications in the chemical and related process industries. However, due to the very limited quantitative description of the complex multiphase flow structure in this type of reactor, its design and scale-up still mainly rely on experience, resulting in a low scale-up success rate and unpredictable reaction results. Therefore, establishing and perfecting the three-phase flow mechanism model in the gas-liquid-solid fluidized bed is the key link to realize the scientific design and scale-up of this type of reactor. This paper analyzes the research progress on the flow mechanism models of gas-liquid-solid fluidized bed with liquid phase as the fluidization medium, especially summarizes the new progress of mesoscale model of gas-liquid-solid flow, and points out the existing problems and the direction of further research, hoping to be a reference for the basic researches and industrial applications.

Key words: fluidized bed, flow, model, mesoscale

摘要：

气液固流化床是一类重要的多相反应器，在化工及相关过程工业中有着广泛的应用。然而，由于对该类反应器内复杂的多相流动结构的定量描述十分有限，目前其设计和放大仍主要依赖经验，致使放大成功率低，反应结果达不到预期效果。因此，建立和完善气液固流化床内的三相流动机理模型，是实现该类反应器科学设计和放大的关键环节。对气液固流化床内的三相流动机理模型的研究进展进行了分析，着重总结了三相流动介尺度机理模型研究的新进展，并指出了存在的问题和进一步研究的方向，希望为该类反应器的基础研究和工业应用提供参考。

关键词: 流化床, 流动, 模型, 介尺度

CLC Number:

TQ 018

Yongli MA, Mingyan LIU, Zongding HU. Development of flow mesoscale modeling of the gas-liquid-solid fluidized beds[J]. CIESC Journal, 2022, 73(6): 2438-2451.

马永丽, 刘明言, 胡宗定. 气液固流化床流动介尺度模型研究进展[J]. 化工学报, 2022, 73(6): 2438-2451.

Figures/Tables 21

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