Characteristics of liquid flow in a rotating packed bed for CO2 capture: A CFD analysis

Xie, Peng; Lu, Xuesong; Yang, Xin; Ingham, D.B.; Ma, Lin; Pourkashanian, Mohamed

doi:10.1016/j.ces.2017.06.040

Cited by 78 publications

(101 citation statements)

References 54 publications

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“…). The liquid maldistribution in the packing was also confirmed in simulation results, and a liquid dispersion index, I d , was developed by Xie et al . to qualitatively describe the dispersion situation of the liquid in the RPB:

{normalI}_{normald} = \frac{A_{int}}{V_{l}}

…”

Section: Flow Simulation In An Rpbmentioning

confidence: 95%

“…(I) Local refinement approach; (II) dynamic gradient adaption approach: (a) t = 0 s; (b) t = 0.1 s; (c) t = 0.5 s …”

Section: Geometry Model Of Rpbmentioning

confidence: 99%

“…On the contrary, obstacle approximation is a proper way to describe liquid behavior in RPBs because the interaction between the liquid phase and wire mesh can be well described via this approach. However, the main disadvantage is that it requires more and smaller grids to describe fluid flow, which means it cannot simulate 3D or large pilot scale RPBs owing to the computational cost . Therefore, the development of computing power and mesh technology or the accurate interaction force between the phases and packing will be major research directions for building the geometry model of RPBs.…”

Section: Geometry Model Of Rpbmentioning

confidence: 99%

“…The fact that the error range remained at ±20% shows the suitability of the CFD method, and the simulation trends that liquid holdup increases with increase in liquid flow rate and viscosity, while it decreases with a rise in rotational speed, are the same as the experimental results. The mean residence time of the liquid can be measured by a CFD method through monitoring the outlet response, and results show that the liquid mean residence time decreased with increase in rotational speed or liquid flow rate, and increased with a rise in viscosity. Moreover, Ouyang et al .…”

Section: Flow Simulation In An Rpbmentioning

confidence: 99%

“…26,40 Based on the advantages of CFD and the barriers to RPBs, until now many researchers have developed various CFD models to carry out fundamental research and industrial application in RPBs. 26,27,[41][42][43][44][45][46][47][48][49][50][51][52][53] In this work, a review related to the development of RPB and CFD technique is presented, including the simplification of packing geometry of RPB, models with aspect to turbulence, multiphase and rotation. Besides, numerical results of flow simulation, mass transfer between phases and mixing process, design and optimization of reactors using CFD technique are discussed.…”

Section: Introductionmentioning

confidence: 99%

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A review on computational fluid dynamic simulation for rotating packed beds

Yang

Ouyang

Zhang

et al. 2018

J of Chemical Tech & Biotech

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A rotating packed bed (RPB) is one of the cutting‐edge process intensification technologies due to its high mass transfer and mixing efficiency. Nevertheless, owing to the complex structure and hydrodynamic characteristics of RPBs, valuable data inside the reactor is hard to obtain by conventional experimental methods. Computational fluid dynamics (CFD) owing to its unique advantages of low cost, completeness of data and ability to simulate real and ideal conditions, has been adopted by many researchers to carry out fundamental research and practical application of RPBs in recent years. This paper therefore elaborates on the research progress on CFD simulation of RPBs. The building of a physical model of these reactors as well as selection of mathematical models are described, then applicability and accuracy of these models are compared and discussed. Simulation results for gas and multiphase flow in reactors are also presented. Additionally, the application of CFD to mixing and mass transfer between phases and processes in rotating packed beds is introduced. Optimum designs of reactors by the CFD method are also described. Finally, problems remaining with CFD simulation of rotating packed beds and future development directions are discussed. © 2018 Society of Chemical Industry

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{normalI}_{normald} = \frac{A_{int}}{V_{l}}

…”

Section: Flow Simulation In An Rpbmentioning

confidence: 95%

“…(I) Local refinement approach; (II) dynamic gradient adaption approach: (a) t = 0 s; (b) t = 0.1 s; (c) t = 0.5 s …”

Section: Geometry Model Of Rpbmentioning

confidence: 99%

Section: Geometry Model Of Rpbmentioning

confidence: 99%

Section: Flow Simulation In An Rpbmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A review on computational fluid dynamic simulation for rotating packed beds

Yang

Ouyang

Zhang

et al. 2018

J of Chemical Tech & Biotech

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Absorption

Karayiannis

Laso

2018

Kirk-Othmer Encyclopedia of Chemical Technology

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Absorption, or gas absorption, is a unit operation used in the chemical industry to separate gases by washing or scrubbing a gas mixture with a suitable liquid. One or more of the gas components dissolves or is absorbed in the liquid and is thus removed from the mixture. Absorption is currently one of the most important processes in chemical engineering not only for product recovery but also, and perhaps mainly, for pollutant removal. Intense industrial and academic effort is focused on optimizing the process, in terms process efficiency as well as commercial aspects. In this article, the fundamental principles of gas solubility and mass transfer, design and operation of industrial equipment with relevant examples of typical commercial gas absorption processes are discussed, including recent developments in these areas.

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Liquid jet impaction on the single‐layer stainless steel wire mesh in a rotating packed bed reactor

Liu

et al. 2019

AIChE Journal

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Liquid flow behaviors in the packing zone of a rotating packed bed reactor significantly affect the mass transfer performance. However, the interaction between the rotating packing and liquid is still not clear, due to packing's complex structure. In this work, liquid jet impaction on a rotating single-layer wire mesh was investigated to clarify the interaction and liquid flow behaviors after the impaction was observed and analyzed by visualization and simulation methods. Visual experiments showed that the interaction could be divided into the shearing action generated by vertical fibers and carrying action generated by horizontal fibers of wire mesh. A dimensionless number β was introduced as a criterion to evaluate the influence of these actions on the liquid dispersion. Simulation results agreed well with the experimental results of liquid dispersion. Dynamic liquid film behaviors on the fiber surface were further simulated and the average film thickness was 21-32 μm.

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Characteristics of liquid flow in a rotating packed bed for CO2 capture: A CFD analysis

Cited by 78 publications

References 54 publications

A review on computational fluid dynamic simulation for rotating packed beds

A review on computational fluid dynamic simulation for rotating packed beds

Absorption

Liquid jet impaction on the single‐layer stainless steel wire mesh in a rotating packed bed reactor

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