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

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Materials Processing Fundamentals 2019

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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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.

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Acknowledgements

The authors are grateful to the Academy of Finland for financial support. This work was made under the project “Thermodynamic investigation of complex inorganic material systems for improved renewable energy and metals production processes” (Decision number 311537) as part of the activities of the Johan Gadolin Process Chemistry Center at Åbo Akademi University. This work is also a part of the project clean and efficient utilization of demanding fuels (CLUE), with support from the industrial partners: ANDRITZ, Fortum, International Paper, UPM-Kymmene Corporation, and Valmet Technologies Oy.

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Authors and Affiliations

  1. Laboratory of Inorganic Chemistry, Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Piispankatu 8, 20500, Turku, Finland

    Fiseha Tesfaye, Mykola Moroz & Leena Hupa

  2. Department of Materials Science and Engineering, Seoul National University, Gwanwak-ro 1, Seoul, 08826, Republic of Korea

    Fiseha Tesfaye, In-Ho Jung & Min-Kyu Paek

  3. Department of Chemical and Metallurgical Engineering (CMET), School of Chemical Engineering, Aalto University, Kemistintie 1, Aalto, 00076, Finland

    Daniel Lindberg

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  1. Fiseha Tesfaye
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  2. In-Ho Jung
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  4. Mykola Moroz
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  5. Daniel Lindberg
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  6. Leena Hupa
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Corresponding author

Correspondence to Fiseha Tesfaye .

Editor information

Editors and Affiliations

  1. Boston Metal, Woburn, MA, USA

    Guillaume Lambotte

  2. Iowa State University, Ames, IA, USA

    Jonghyun Lee

  3. Massachusetts Institute of Technology, Cambridge, MA, USA

    Antoine Allanore

  4. Massachusetts Institute of Technology, Cambridge, MA, USA

    Samuel Wagstaff

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© 2019 The Minerals, Metals & Materials Society

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Tesfaye, F., Jung, IH., Paek, MK., Moroz, M., Lindberg, D., Hupa, L. (2019). Thermochemical Data of Selected Phases in the FeOx–FeSO4–Fe2(SO4)3 System. In: Lambotte, G., Lee, J., Allanore, A., Wagstaff, S. (eds) Materials Processing Fundamentals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05728-2_21

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