Numerical simulation of counter-current flow field in the downcomer of a liquid–solid circulating fluidized bed

Dadashi, Abbas; Zhang, Chao; Zhu, Jesse

doi:10.1016/j.partic.2014.07.007

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Recently, Dadashi et al (2015) have made a first attempt to develop a sophisticated CFD model to simulate the countercurrent solid-liquid flow in downcomer of SLCFB. The model was based on E-E approach incorporating the kinetic theory of granular flow.…”

Section: Computational Fluid Dynamic Modelsmentioning

confidence: 99%

Solid-liquid circulating fluidized bed: a way forward

Thombare

Chavan

Bankar

et al. 2017

Reviews in Chemical Engineering

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AbstractSolid-liquid circulating fluidized beds (SLCFBs) offer several attractive features over conventional solid-liquid fluidized beds such as efficient liquid-solid contact, favorable mass and heat transfer, reduced back-mixing of phases, and integrated reactor and regenerator design. These unique features have stimulated theoretical and experimental investigations over the past two decades on transport phenomena in SLCFBs. However, there is a need to compile and analyze the published information with a coherent theme to design and develop SLCFB with sufficient degree of confidence for commercial application. Therefore, the present work reviews and analyzes the literature on hydrodynamic, mixing, heat transfer, and mass transfer characteristics of SLCFBs comprehensively. Suitable recommendations have also been made for future work in concise manner based on the knowledge gaps identified in the literature. Furthermore, a novel multistage SLCFB has been proposed to overcome the limitations of existing SLCFBs. The proposed model of SLCFB primarily consists of a single multistage column which is divided into two sections wherein both the steps of utilizationviz.loading (adsorption, catalytic reaction, etc.) and regeneration of solid phase could be carried out simultaneously on a continuous mode.

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Section: Computational Fluid Dynamic Modelsmentioning

confidence: 99%

Solid-liquid circulating fluidized bed: a way forward

Thombare

Chavan

Bankar

et al. 2017

Reviews in Chemical Engineering

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“…The study of this fluidization process can be used to optimize the structure and operating conditions of related equipments. [1][2][3] In liquid and solid two-phase flow, the evolution process of particle phase from compaction to fluidization includes three stages: quasi-static flow, dense flow, and dilute flow. [4] Because of the different behaviors of particle phase in different stages, [5,6] the calculation methods of the three stages are different.…”

Section: Introductionmentioning

confidence: 99%

Mechanism from particle compaction to fluidization of liquid–solid two-phase flow*

et al. 2020

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A new model of particle yield stress including cohesive strength is proposed, which considers the friction and cohesive strength between particles. A calculation method for the fluidization process of liquid–solid two-phase flow in compact packing state is given, and the simulation and experimental studies of fluidization process are carried out by taking the sand–water two-phase flow in the jet dredging system as an example, and the calculation method is verified.

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