Carbon dioxide storage by mineralisation applied to a lime kiln

Inês Romão, Matias Eriksson, Experience Nduagu, Johan Fagerlund, Licínio M. Gando-Ferreira, Ron Zevenhoven

    Forskningsoutput: Kapitel i bok/konferenshandlingKonferensbidragVetenskapligPeer review

    9 Citeringar (Scopus)

    Sammanfattning

    This paper describes a design, for a pilot-scale application, of a two-staged process that is under study at Åbo Akademi University (ÅA), for Carbon dioxide Storage by Mineralisation (CSM). The ÅA route implies the production of brucite (besides Ca- and Fe- based by-products) from a magnesium/calcium silicate rock, using recoverable ammonium sulphate (AS), followed by carbonation of the Mg(OH)2 in a pressurised fluidised bed at ~ 500°C, 20-30 bar CO2 partial pressure. An assessment is reported for operating the CSM process on waste heat from a limekiln (lime production: 210 t/day) in Pargas, Southwest Finland, i.e. without external energy input apart from what is needed for crushing the rock to the required particle size (a few % of the overall CSM process energy requirement) and compressing the flue gas to be treated. Part of the off-gas from the limekiln (CO2 content ~21%-vol) will be processed without a CO2 separation step. The feature of operating without CO2 separation makes CSM an attractive and cost-competitive option when compared to conventional CCS involving underground storage of CO2. An exergy analysis is used to optimise process layout and energy efficiency, and at the same time maximise the amount of CO2 that can be bound to MgCO3 given the amount of waste heat available from the kiln. Also, experimental results are reported for producing Mg(OH)2 (and Fe,Ca(OH)2) from local rock material.

    OriginalspråkEngelska
    Titel på gästpublikationProceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, ECOS 2012
    FörlagÅbo Akademi University
    Sidor103-115
    Antal sidor13
    ISBN (tryckt)9788866553229
    StatusPublicerad - 2012
    MoE-publikationstypA4 Artikel i en konferenspublikation
    Evenemang25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, ECOS 2012 - Perugia, Italien
    Varaktighet: 26 jun 201229 jun 2012

    Publikationsserier

    NamnProceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, ECOS 2012
    Volym6

    Konferens

    Konferens25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, ECOS 2012
    Land/TerritoriumItalien
    OrtPerugia
    Period26/06/1229/06/12

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