A noninvasive X-ray technique for determination of liquid holdup in a rotating packed bed

Yang, Yucheng; Xiang, Yang; Chu, Guang‐Wen; Zou, Hai‐Kui; Luo, Yong; Arowo, Moses; Chen, Jianfeng

doi:10.1016/j.ces.2015.07.044

Cited by 107 publications

(99 citation statements)

References 48 publications

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“…For a comparison with the results of Burns et al and Yang et al the correlations derived by these authors were evaluated against the current experimental data. However, the comparison, for which a detailed analysis is provided in the Supporting Information, shows that these correlations either severely underestimate or overestimate the liquid hold‐up.…”

Section: Resultsmentioning

confidence: 99%

“…For rotational speeds between 10 to 20 s -1 , a slight increase of the hold-up is measured in the first few millimeters from the inner radius of the packing until a maximum is reached. A similar increase in liquid hold-up along the first millimeters of the radius was found by Yang [11], who explained this by the packing capturing the liquid. Additionally, the accumulation can be explained by the deceleration of the liquid interacting with the packing.…”

Section: Effect Of the Rotational Speedmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Flow Patterns in High‐Gravity Equipment Using Gamma‐Ray Computed Tomography

Groß

Bieberle

Gładyszewski

et al. 2019

Chemie Ingenieur Technik

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The capacity of today's gas‐liquid contacting equipment such as tray or packed columns is limited by the gravitational‐driven liquid flow. Intensified equipment applying centrifugal force offers great potential for enhancing the mass transfer and for reducing equipment size. Yet, detailed knowledge about the liquid flow inside rotating packings is scarce due to limited accessibility with conventional measurement systems. In this study, a gamma‐ray computed tomography is employed to quantify the liquid hold‐up and its distribution in the moving packing.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of the Rotational Speedmentioning

confidence: 99%

Analysis of Flow Patterns in High‐Gravity Equipment Using Gamma‐Ray Computed Tomography

Groß

Bieberle

Gładyszewski

et al. 2019

Chemie Ingenieur Technik

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“…Liquid holdup, which can be used in determining the interfacial area available for mass transfer and mixing processes, is an important operating characteristic of the RPB. Yang et al, Xie et al, and other authors analyzed liquid holdup by the CFD method, and the simulation results were compared with experimental results . 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.…”

Section: Flow Simulation In An Rpbmentioning

confidence: 62%

“…However, due to the complex structure of an RPB and its flow pattern, it is difficult to obtain detailed information inside the reactor using a conventional experimental approach. 22 This fact will probably hinder further development and application of RPBs in the future, hence many advanced methods have been developed in recent years to reveal the information in RPBs. [22][23][24][25][26][27] Among these approaches, the computational fluid dynamics (CFD) technique is an important one owing to its unique advantages.…”

Section: Introductionmentioning

confidence: 99%

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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“…The studies of liquid holdup and wetting efficiency can precisely shine some light onto such vacancy. Quite a few theoretical and experimental works regarding the liquid holdup in RPBs were summarized by Yang et al Although the sphere packing was investigated in the RPB, porous spheres, which are fairly common in heterogeneous processes, were not dealt with . Furthermore, almost none of the research mentioned static liquid holdup in a centrifugal field.…”

Section: Introductionmentioning

confidence: 99%