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Korean Journal of Chemical Engineering, Vol.35, No.5, 1073-1082, 2018
Hydrodynamics and design of gas distributor in large-scale amine absorbers using computational fluid dynamics
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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[Cited By]
- Lee JM, Kim DW, Park KI, Lee GH, Korean Chemical Engineering Research, 58(4), 642, 2020
- Go ES, Kang SY, Seo SB, Kim HW, Lee SH, Korean Chemical Engineering Research, 58(4), 651, 2020
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