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Received September 4, 2017
Accepted January 11, 2018
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Hydrodynamics and design of gas distributor in large-scale amine absorbers using computational fluid dynamics
CoSPE, Department of Chemical Engineering, Hankyong National University, Jungang-ro 327, Anseong-si, Gyeonggi-do 17579, Korea 1Daelim, D Tower, 17 Jongno 3-gil Jongno-gu, Seoul 03155, Korea 2TPT Pacific, 19 Sannam-gil, Onsan-eup, Ulju-gun, Ulsan 45010, Korea
Korean Journal of Chemical Engineering, May 2018, 35(5), 1073-1082(10), 10.1007/s11814-018-0006-z
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Abstract
A gas phase three-dimensional (3D) computational fluid dynamics (CFD) model was developed to investigate the hydrodynamics of gas distributors used in an amine absorber with a diameter of 3.2m. A standard gas inlet, tubular injectors with short, medium and long lengths, and a Schoepentoeter were considered as feed systems of the gas distributors. The pressure drop, dead-area ratio and coefficient of distribution at the packing entry were used as the performance indexes of the gas distributors. The down-pipe as a liquid collector exhibited a lower dead-area ratio when compared with that of the down-comer. The tubular gas injector with a short length reduced the dead-area ratio and the gas maldistribution. The Schoepentoeter was associated with the lowest pressure drop, dead-area ratio, and coefficient of distribution among the gas distributors. The uniformity of gas distribution was enhanced by 25% in the Schoepentoeter when compared to that of the tubular gas injector.
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References
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