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Hydrodynamics and design of gas distributor in large-scale amine absorbers using computational fluid dynamics

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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 3.2 m. 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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Authors and Affiliations

  1. CoSPE, Department of Chemical Engineering, Hankyong National University, Jungang-ro 327, Anseong-si, Gyeonggi-do, 17579, Korea

    Hung Hai Pham & Young-Il Lim

  2. Daelim, D Tower, 17 Jongno 3-gil Jongno-gu, Seoul, 03155, Korea

    Sungu Han & Hyun-Shin Ko

  3. TPT Pacific, 19 Sannam-gil, Onsan-eup, Ulju-gun, Ulsan, 45010, Korea

    Bosup Lim

Authors
  1. Hung Hai Pham
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  2. Young-Il Lim
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  3. Sungu Han
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  4. Bosup Lim
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  5. Hyun-Shin Ko
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Correspondence to Young-Il Lim.

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Pham, H.H., Lim, YI., Han, S. et al. Hydrodynamics and design of gas distributor in large-scale amine absorbers using computational fluid dynamics. Korean J. Chem. Eng. 35, 1073–1082 (2018). https://doi.org/10.1007/s11814-018-0006-z

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  • DOI: https://doi.org/10.1007/s11814-018-0006-z

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