CO2 fixation using magnesium silicate minerals. Part 2: Energy efficiency and integration with iron-and steelmaking

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

*Korresponderande författare för detta arbete

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    48 Citeringar (Scopus)

    Sammanfattning

    Mineral carbonation presents itself as the most promising method to sequester CO2 in Finland. A staged process for CO2 mineralisation, using magnesium silicates, is being intensively developed at åbo Akademi. A process energy analysis is made based on the most energy intensive steps, i.e. the heat treatment of the magnesium silicate rock and the carbonation reaction. Aspen Plus® software was used to model the process and pinch and exergy analyses were performed to acquire information on process layout for optimal heat recovery and integration. The simulations allow for concluding that the fixation of 1 kg of CO2 requires 3.04 MJ and 3.1 kg of serpentinite mineral rock. Additionally, the process gives considerable amounts of FeOOH and Ca(OH)2 as by-products making the integration of mineral carbonation with the steelmaking industry a very attractive opportunity to reduce CO2 emissions and raw materials inputs.

    OriginalspråkEngelska
    Sidor (från-till)203-211
    Antal sidor9
    TidskriftEnergy
    Volym41
    Nummer1
    DOI
    StatusPublicerad - maj 2012
    MoE-publikationstypA1 Tidskriftsartikel-refererad

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