LAPSE:2019.1315v1
Published Article
LAPSE:2019.1315v1
Droplet Characteristics of Rotating Packed Bed in H2S Absorption: A Computational Fluid Dynamics Analysis
December 10, 2019
Rotating packed bed (RPB) has been demonstrated as a significant and emerging technology to be applied in natural gas desulfurization. However, droplet characteristics and principle in H2S selective absorption with N-methyldiethanolamine (MDEA) solution have seldom been fully investigated by experimental method. Therefore, a 3D Eulerian−Lagrangian approach has been established to investigate the droplet characteristics. The discrete phase model (DPM) is implemented to track the behavior of droplets, meanwhile the collision model and breakup model are employed to describe the coalescence and breakup of droplets. The simulation results indicate that rotating speed and radial position have a dominant impact on droplet velocity, average residence time and average diameter rather than initial droplet velocity. A short residence time of 0.039−0.085 s is credited in this study for faster mass transfer and reaction rate in RPB. The average droplet diameter decreases when the initial droplet velocity and rotating speed enhances. Restriction of minimum droplet diameter for it to be broken and an appropriate rotating speed have also been elaborated. Additional correlations on droplet velocity and diameter have been obtained mainly considering the rotating speed and radial position in RPB. This proposed formula leads to a much better understanding of droplet characteristics in RPB.
Record ID
Keywords
Computational Fluid Dynamics, droplet characteristic, Eulerian–Lagrangian approach, natural gas desulfurization, rotating packed bed
Subject
Suggested Citation
Wang Z, Wu X, Yang T, Wang S, Liu Z, Dan X. Droplet Characteristics of Rotating Packed Bed in H2S Absorption: A Computational Fluid Dynamics Analysis. (2019). LAPSE:2019.1315v1
Author Affiliations
Wang Z: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Wu X: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Yang T: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Wang S: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Liu Z: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Dan X: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Wu X: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Yang T: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Wang S: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Liu Z: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Dan X: School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
Journal Name
Processes
Volume
7
Issue
10
Article Number
E724
Year
2019
Publication Date
2019-10-11
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr7100724, Publication Type: Journal Article
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LAPSE:2019.1315v1
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External Link
doi:10.3390/pr7100724
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[v1] (Original Submission)
Dec 10, 2019
Verified by curator on
Dec 10, 2019
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v1
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https://psecommunity.org/LAPSE:2019.1315v1
Original Submitter
Calvin Tsay
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