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Decarbonisation Pathways for the Finishing Line in a Steel Plant and Their Implications for Heat Recovery Measures

Author

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  • Anton Beck

    (Austrian Institute of Technology, Giefinggasse 2, 1210 Vienna, Austria)

  • Julian Unterluggauer

    (Austrian Institute of Technology, Giefinggasse 2, 1210 Vienna, Austria)

  • Franz Helminger

    (Austrian Institute of Technology, Giefinggasse 2, 1210 Vienna, Austria)

  • Irene Solís-Gallego

    (ArcelorMittal Global R&D Spain, Avenida de Marqués de Suances s/n, P.O. Box 90, 33400 Avilés, Asturias, Spain)

Abstract

Steel production is one of the biggest emitters of greenhouse gas in the industrial sector with about 8% of total global CO 2 emissions. Although the majority of emissions can be attributed to primary steel production, there is also potential for reducing CO 2 emissions in downstream steel processing. Large industrial furnaces, which are necessary for heating steel, are currently primarily fired with natural gas and by-product gases from primary steel production, offering great potential for heat recovery measures from exhaust gases. However, switching to alternative climate-neutral fuels could change this potential and thus jeopardize the economic viability of heat recovery measures. In the present work, it was therefore examined to what extent a change in energy sources in industrial furnaces affects the potential use of heat recovery in steel processing. For this purpose, an optimization model was used that takes into account heat recovery by means of direct heat transfer, heat pumps and heat distribution systems. Potential future changes in energy supply for industrial furnaces were examined using different storylines. Two different energy price scenarios were also considered to address uncertain developments in energy markets. The results show that heat recovery is a cost-effective and definitely recommendable measure. Switching to alternative fuels has little impact on the use of heat recovery. Electrification and thus the elimination of flue gas, on the other hand, greatly reduces the potential for heat recovery.

Suggested Citation

  • Anton Beck & Julian Unterluggauer & Franz Helminger & Irene Solís-Gallego, 2023. "Decarbonisation Pathways for the Finishing Line in a Steel Plant and Their Implications for Heat Recovery Measures," Energies, MDPI, vol. 16(2), pages 1-21, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:2:p:852-:d:1032647
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    References listed on IDEAS

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    1. Chang, Chenglin & Chen, Xiaolu & Wang, Yufei & Feng, Xiao, 2017. "Simultaneous optimization of multi-plant heat integration using intermediate fluid circles," Energy, Elsevier, vol. 121(C), pages 306-317.
    2. Li, Yemao & Xia, Jianjun & Fang, Hao & Su, Yingbo & Jiang, Yi, 2016. "Case study on industrial surplus heat of steel plants for district heating in Northern China," Energy, Elsevier, vol. 102(C), pages 397-405.
    3. Weinberger, Gottfried & Amiri, Shahnaz & Moshfegh, Bahram, 2017. "On the benefit of integration of a district heating system with industrial excess heat: An economic and environmental analysis," Applied Energy, Elsevier, vol. 191(C), pages 454-468.
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    Cited by:

    1. Stefano Barberis & Simone Maccarini & Syed Safeer Mehdi Shamsi & Alberto Traverso, 2023. "Untapping Industrial Flexibility via Waste Heat-Driven Pumped Thermal Energy Storage Systems," Energies, MDPI, vol. 16(17), pages 1-24, August.
    2. Josué Rodríguez Diez & Silvia Tomé-Torquemada & Asier Vicente & Jon Reyes & G. Alonso Orcajo, 2023. "Decarbonization Pathways, Strategies, and Use Cases to Achieve Net-Zero CO 2 Emissions in the Steelmaking Industry," Energies, MDPI, vol. 16(21), pages 1-31, October.

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