Thermochemical Data of Selected Phases in the FeO x –FeSO 4 –Fe 2 (SO 4 ) 3 System

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openAccess

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Journal Title

Journal ISSN

Volume Title

A3 Kirjan tai muun kokoomateoksen osa

Date

2019-02-10

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Mcode

Degree programme

Language

en

Pages

14
227-240

Series

Materials Processing Fundamentals, 2019, Minerals, Metals and Materials Series

Abstract

Several recent studies have shown the potential of oxy-fuel combustion to reduce NO x (gas) and SO 2 (gas) emissions. However, the mechanisms through which SO 2 (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 SO 2 (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 FeO x –FeSO 4 –Fe 2 (SO 4 ) 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 C p functions, which include the recent experimental data, were optimized. The obtained results are presented and discussed.

Description

Keywords

Decomposition reaction, Sulfate, Sulfur dioxide, Thermochemical data

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Citation

Tesfaye, F, Jung, I H, Paek, M K, Moroz, M, Lindberg, D & Hupa, L 2019, Thermochemical Data of Selected Phases in the FeO x –FeSO 4 –Fe 2 (SO 4 ) 3 System . in A Allanore, G Lambotte, S Wagstaff & J Lee (eds), Materials Processing Fundamentals, 2019 . Minerals, Metals and Materials Series, Springer, pp. 227-240, Materials Processing Fundamentals Symposium, San Antonio, California, United States, 10/03/2019 . https://doi.org/10.1007/978-3-030-05728-2_21