Liquid flow behavior in a multiliquid-inlet rotating packed bed reactor with three-dimensional printed packing

Wu, Wei; Luo, Yong; Chu, Guang‐Wen; Su, Meng-Jun; Cai, Yong; Zou, Hai‐Kui; Chen, Jianfeng

doi:10.1016/j.cej.2019.04.117

Cited by 37 publications

(17 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…RPBs are multiphase gas–liquid contactors/reactors presented for the first time by Ramshaw and Mallinson. , Due to the continuous renewing of the gas–liquid interface, RPBs provide promising intensification to the mass transfer compared to conventional packed beds. − Current applications of RPB reactors include post-combustion CO 2 capture, − wastewater treatment, ozone oxidation, synthesis of nanoparticles, and distillation. , In a RPB, the liquid, that is radially injected into the bed through an inlet located in the center of the reactor, collides with a packing rotating at an extremely high speed and splits into films, filaments, and finally tiny droplets . Although several packing configurations have been proposed for RPBs, the most utilized packing types are wire mesh and nickel foam packing. , Despite a remarkable mass-transfer enhancement, the extremely complex hydrodynamic of these beds has not been thoroughly studied. ,, …”

Section: Introductionmentioning

confidence: 99%

On the Volume of Fluid Simulation Details and Droplet Size Distribution inside Rotating Packed Beds

Golshan

Rabiee

Shams

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this research, the volume of fluid (VOF) method is used to study the hydrodynamics of rotating packed beds (RPBs). The model is validated, and grid independence analyses are performed for cases with different operating conditions. The droplet size distribution is investigated to characterize the hydrodynamics of RPBs. Droplet size distributions are compared in two-dimensional and three-dimensional simulations, and it is demonstrated that two-dimensional simulations can provide an accurate prediction while significantly reducing the significant computational cost. Radial distributions of droplet diameter in the packing region are studied, and different trends are observed at different rotational speeds (fluctuating at ω = 250 rpm, increasing–constant at ω = 500 rpm, and decreasing at higher rotational speeds). These trends are explained using the breakup and coalescence of droplets during droplet–packing and droplet–droplet collisions. Breakup, coalescence, and deposition regimes of droplets depend on the Weber, Ohnesorge, and impact parameters. We observed that with increasing rotational speed, the average droplet diameter and its standard deviation decreased, while changing the liquid flow rate did not significantly affect the average droplet diameter. It is also observed that there is a critical rotational speed (depending on the bed configuration), beyond which the average droplet size does not decrease with increasing rotational speed.

show abstract

Section: Introductionmentioning

confidence: 99%

On the Volume of Fluid Simulation Details and Droplet Size Distribution inside Rotating Packed Beds

Golshan

Rabiee

Shams

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Computational fluid dynamics (CFD) simulations can assist in the understanding of the liquid flow characteristics and droplet behaviors in RPBs, which is beneficial to their design, scale‐up and performance prediction. Currently, the liquid flow behaviors, 3,12–17 micromixing efficiency, 18–20 and mass transfer 21 have been studied through using VOF simulation methods. However, it is challenging to simulate gas–liquid flow in a full three‐dimensional (3D) RPB model using the volume of fluid (VOF) method, because even a small RPB requires large computational resources and a long computational time.…”

Section: Introductionmentioning

confidence: 99%

Modeling of gas–liquid flow in a rotating packed bed using an Eulerian multi‐fluid approach

Zhang

Xie²,

et al. 2022

AIChE Journal

View full text Add to dashboard Cite

Rotating packed beds (RPBs) are ideal candidates for CO2 removal from offshore natural gas due to their good mass transfer performance and significant volume savings. This article proposes an Eulerian multi‐fluid approach to simulate the gas–liquid flow in RPBs. Three new multiphase drag force models are constructed based on single‐phase drag force models for wire mesh packings. Based on the Eulerian multi‐fluid approach, a new RPB simulation framework is developed. The predicted results using the new simulation framework with the new drag force models are compared with the experimental data. When using the Kołodziej model and the modified Kołodziej model, the predicted overall liquid holdup shows good agreement with the experimental data with errors less than 20%. In addition, the pressure drop predicted by these three models are reasonable compared with the experimental data. This work lays a foundation for RPB simulation of gas–liquid flow using Eulerian multi‐fluid approach.

show abstract

“…The other type of packing represents the concentric wire mesh packing, of which vertical fibers can be arrayed as stagger as possible between adjacent wire mesh layers to enhance the probability of liquid breakup. 24 2.1.2. Cross-Sectional Area of Wire Mesh Packing.…”

Section: Methodsmentioning

confidence: 99%

“…One type of packing represents the coiled wire mesh packing, of which vertical fibers can only be arrayed along the spiral line. The other type of packing represents the concentric wire mesh packing, of which vertical fibers can be arrayed as stagger as possible between adjacent wire mesh layers to enhance the probability of liquid breakup …”

Section: Methodsmentioning

confidence: 99%

“…Liu et al 23 designed a mesh-pin rotor consisted of wire mesh packing and 3D-printed pin in a bid to satisfy the requirement of antiblockage. Wu et al 24 printed the wire mesh packing to achieve the true verification for computational fluid dynamics simulation. In view of the above discussions, 3D printing is a promising way to realize more unconstraint design about packing geometry, such as the control of cross-sectional area for wire mesh packing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel Wire Mesh Packing with Controllable Cross-Sectional Area in a Rotating Packed Bed: Mass Transfer Studies

Wen

Luo

et al. 2020

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Wire mesh packing has been extensively utilized in laboratory and industry applications in rotating packed bed (RPB) because of the high mass transfer performance and low cost. Conventional wire mesh packings formed by the coiling meshes with constant porosity have an increasing cross-sectional area along the radial direction, which affects the fluid flow behavior and mass transfer performance. Herein, wire mesh packings with controllable cross-sectional area were designed and rapidly fabricated using the three-dimensional (3D) printing technology. Gas–liquid mass transfer efficiencies of wire mesh packings with various structures and cross-sectional areas were evaluated. The gas–liquid effective interfacial area (a e) and liquid-side volumetric mass transfer coefficient (k L a e) of the concentric wire mesh packing with constant cross-sectional area were, respectively, 25.5 and 14.7% higher than those of the coiled one with increasing cross-sectional area. The correlations for prediction of a e and k L a e, considering previous and current data, were respectively established with acceptable deviations.

show abstract

Liquid flow behavior in a multiliquid-inlet rotating packed bed reactor with three-dimensional printed packing

Cited by 37 publications

References 40 publications

On the Volume of Fluid Simulation Details and Droplet Size Distribution inside Rotating Packed Beds

On the Volume of Fluid Simulation Details and Droplet Size Distribution inside Rotating Packed Beds

Modeling of gas–liquid flow in a rotating packed bed using an Eulerian multi‐fluid approach

Novel Wire Mesh Packing with Controllable Cross-Sectional Area in a Rotating Packed Bed: Mass Transfer Studies

Contact Info

Product

Resources

About