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    CFD modelling of a hollow fibre system for CO2 capture by aqueous amine solutions of MEA, DEA and MDEA

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    gilassi_rahmanian_2015.pdf (2.573Mb)
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    Publication date
    2016
    Author
    Gilassi, S.
    Rahmanian, Nejat
    Keyword
    Amine solutions
    CFD modelling
    CO2 capture
    COMSOL software
    Hollow fibre membrane
    Rights
    © 2016 de Gruyter. Full-text reproduced in accordance with the publisher’s self-archiving policy.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    A mass transfer model was developed for CO2 capture from a binary gas mixture of N2/CO2 in hollow fibre membrane contactors under laminar flow conditions. The axial and radial diffusions through membrane and convection in tube and shell sides with chemical reaction were investigated. COMSOL software was used to numerically solve a system of non-linear equations with boundary conditions by use of the finite element method. Three different amine solutions of monoethanolamine (MEA), diethanolamine (DEA) and n-methyldiethanolamine (MDEA) were chosen as absorbent in lumen to consider the mass transfer rate of CO2 and compare their removal efficiency. The modelling results were compared with experimental data available in the literature and a good agreement was observed. The CFD results revealed that MEA had the best performance for CO2 removal as compared to DEA and MDEA under various operating conditions due to the different CO2 loading factor of absorbents. Furthermore, efficiency of CO2 removal was highly dependent on the absorbent concentration and its flow rate, increasing of the gas flow rate caused a reduction in gas residence time in the shell and consequently declined CO2 mass transfer. The modelling results showed the influence of the absorbent concentration on the CO2 mass transfer has improved due to availability of absorbent reactants at the gas-liquid interface.
    URI
    http://hdl.handle.net/10454/10315
    Version
    Published version
    Citation
    Gilassi S and Rahmanian N (2016) CFD modelling of a hollow fibre system for CO2 capture by aqueous amine solutions of MEA, DEA and MDEA. International Journal of Chemical Reactor Engineering. 14(1): 53-61.
    Link to publisher’s version
    http://dx.doi.org/10.1515/ijcre-2014-0142
    Type
    Article
    Collections
    Engineering and Informatics Publications

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