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CFD modelling of the off-gas system of HIsarna iron making process. Part 1

model development using detailed reaction mechanism for post-combustion of CO–H2 mixture and carbon particles

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 Erik Offerman
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/10.1080/03019233.2022.2062929
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 Erik Offerman
Issue number
8
Volume number
49
Pages (from-to)
828-844
DOI:
https://doi.org/10.1080/03019233.2022.2062929
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Abstract

The HIsarna process is a new and breakthrough smelting reduction process for hot metal (liquid iron) production from iron ores and coal directly fed into the reactor. The flue gas from the main reactor enters the off-gas system containing small amounts of H2, CO and carbon particles which need to be removed before further treatment by post combustion oxygen injection. A three-dimensional Computational Fluid Dynamics (CFD) simulation of the HIsarna off-gas system is performed and validated using a detailed reaction mechanism and kinetic data for post-combustion of a CO–H2 mixture and carbon particles. Using the validated model, a series of simulations were performed to investigate the effect of water quenching and post combustion oxygen injection. It was found that water quenching can significantly reduce the off-gas temperature. It is also possible to reduce oxygen injection during operations where inlet CO content of the off-gas system is low.