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CFD modelling of the off-gas system HIsarna iron making process part 2

reflux chamber geometry modification and effects on flow behaviour

Journal Article (2022)
Authors

Ashkan Hosseini (TU Delft - Team Yongxiang Yang)

Vinod Dhiman (Tata Steel Europe Limited)

Koen Meijer (Tata Steel Europe Limited)

Christiaan Zeilstra (Tata Steel Europe Limited)

Johannes Hage (Tata Steel Europe Limited)

Tim Peeters (Tata Steel Europe Limited)

Erik Offerman (TU Delft - Team Erik Offerman)

Yongxiang Yang (TU Delft - Team Yongxiang Yang)

Research Group
Team Yongxiang Yang
Copyright
© 2022 A. Hosseini, Vinod Dhiman, Koen Meijer, Christiaan Zeilstra, Johannes Hage, Tim Peeters, S.E. Offerman, Y. Yang
To reference this document use:
https://doi.org/10.1080/03019233.2022.2060457
More Info
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Publication Year
2022
Language
English
Copyright
© 2022 A. Hosseini, Vinod Dhiman, Koen Meijer, Christiaan Zeilstra, Johannes Hage, Tim Peeters, S.E. Offerman, Y. Yang
Related content
Research Group
Team Yongxiang Yang
Issue number
8
Volume number
49
Pages (from-to)
783-794
DOI:
https://doi.org/10.1080/03019233.2022.2060457
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Abstract

A three-dimensional computational fluid dynamics (CFD) model for the HIsarna off-gas system is set up and validated by real plant data. In the model detailed reaction mechanism and kinetic data for post-combustion of CO-H2 mixture and carbon particles are incorporated. The results are presented and discussed in another study (Part 1) by the same authors. In the present paper, the focus will be on geometry modification of the off-gas system and the effects on the operating parameters. The effect of this modification on heat loss, temperature profile, carbon conversion and gaseous phase composition across the off-gas system is investigated. It is shown that the modified geometry leads to a higher heat loss through the reflux chamber walls which can change the temperature profile and consequently species composition. The modified geometry also offers possibility of higher CO-H2 mixture and carbon particles conversion rate and reduce unwanted emission from the reflux chamber.