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    SO2 and CO2 co-capture from heavy fuel oil power plants: The influence of calcium looping cycles on limestone derived sorbent capture efficiency

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    Type
    Conference Paper
    Authors
    Homsy, Sally Louis
    Dibble, Robert W. cc
    KAUST Department
    Clean Combustion Research Center
    Physical Science and Engineering (PSE) Division
    Mechanical Engineering Program
    Date
    2019-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/666469
    
    Metadata
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    Abstract
    Although phasing out heavy fuel oil (HFO) usage as a power source is unlikely while the world remains reliant on petroleum products, literature on CO2 capture technology implementation at HFO-fired power plants is scarce. Calcium looping (CaL) is an advanced post-combustion CO2 capture technology that utilizes limestone-derived CaO to simultaneously concentrate CO2 and capture SO2. As sorbent is cycled between CO2 capture and CaO regeneration, its capture capacity decays. In this study, samples of two structurally distinct limestones were cycled in the presence of: (1) steam, (2) both steam and SO2. Samples at different stages of activity (Xmax = 0.6, 0.3 and 0.1) were collected and used to explore the effect of sorbent cycling and CaSO4 content on CO2 and SO2 co-capture from synthetic HFO flue gas. Bubbling fluidized bed (BFB) reactors equipped with effluent line sampling for continuous CO2, SO2, and O2 gas analysis were used. This data can be used to estimate required design parameters for CaL implementation at HFO-fired power plants, and provides further insight into the relationship between sorbent morphology and carbonation/sulfation behavior.
    Sponsors
    The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The author would like to thank Joseba Moreno and the team at the University of Stuttgart, Institute of Combustion and Power Plant Technology (IFK), for hosting the BFB and TGA experiments at their facilities.
    Publisher
    Combustion Institute
    Conference/Event name
    12th Asia-Pacific Conference on Combustion, ASPACC 2019
    Additional Links
    http://www.combustionsociety.jp/aspacc19/program_final0711.html#CH0238
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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