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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14b
SUMMARY:Tenova stepwise approach to the decarbonization of heating processes
DESCRIPTION:The European Green Deal, the Paris Cop21 agreement and the ‘Fit for 55’ climate package all set ambitious targets in terms of greenhouse gas emissions reduction. Consequently, European iron and steel producers need a paradigm shift to fulfill environmental regulations and to carefully evolve their processes towards low-carbon footprint technologies without losing competitiveness or profitability.
To this end, both steel production stages, Upstream (up to liquid steel) and Downstream (from liquid to solid steel), need to implement an evolution or replacement of current technologies. Reduction of iron ores remains the most carbon intensive process and several technologies are currently under scrutiny for minimizing its carbon footprint. Anyway, more than 40% of European steel comes from scrap recycling with direct carbon emission intensity of about 130 kgCO2e/ton for the Upstream portion. In this case, reheating and heat treatment processes in Downstream, accounting for 50-190 kgCO2e/ton depending upon the product type, cover a relevant fraction of total direct carbon footprint of steel products. Consequently, the decarbonization of electric steel production must also take into account hot rolling and heat treatment processes.
In this energy transition scenario, Tenova proposes a stepwise solution to the decarbonization of heating furnaces. After a first step of thermal efficiency optimization of existing equipment, electrification is pursued as far as possible to maximize energy efficiency. This is possible only up to a critical temperature, where other process constraints (scale formation, heating efficiency, production flexibility) come into play. Hydrogen and non-fossil fuels combustion are required for the final temperature increase, while also providing a protective atmosphere against surface oxidation. The sequence of implementation of these energy transition steps follows the availability of resources as foreseen in the energy transition scenario for Europe, thus providing to steelmakers a low-risk implementation of steel production decarbonization.

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DTSTART:20230614T115000
DTEND:20230614T121000
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