Thermochemical Data of Selected Phases in the FeOx–FeSO4–Fe2(SO4)3 System

Fiseha Tesfaye, In-Ho Jung, Min-Kyu Paek, Mykola Moroz, Daniel Lindberg, Leena Hupa

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    Abstract

    Several recent studies have shown the potential of oxy-fuel combustion to reduce NOx(gas) and SO2(gas) emissions. However, the mechanisms through which SO2(gas) reduction takes place has yet to be fully understood. Therefore, the development of oxy-sulfate thermodynamic database for a better understanding and control of SO2(gas) emission during oxy-fuel combustion processes is essential. The focus of this research is on the thermodynamic modelling of the iron oxide–sulfate system with the FactSage 7.2 software package. Thermodynamic properties of selected phases in the FeOx–FeSO4–Fe2(SO4)3 system were critically reviewed, compiled and assessed over a wide temperature range (298–2000 K) to obtain accurate thermodynamic description of the system at different temperatures. New Cp functions, which include the recent experimental data, were optimized. The obtained results are presented and discussed.

    Original languageUndefined/Unknown
    Title of host publicationMaterials Processing Fundamentals 2019
    EditorsGuillaume Lambotte, Jonghyn Lee, Antoine Allanore, Samuel Wagstaff
    PublisherSpringer
    Pages227–240
    ISBN (Electronic)978-3-030-05728-2
    ISBN (Print)978-3-030-05727-5
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA3 Part of a book or another research book

    Keywords

    • Metallurgical Thermodynamics and Modelling
    • Sulfates
    • Thermodynamic equilibrium calculations
    • slagging and fouling

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