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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14b
SUMMARY:Hydrogen burners for carbon neutrality in electric steel making: Latest developments of the Clusters4Future HyInnoBurn project
DESCRIPTION:Electric steelmaking using scrap generates 80% less greenhouse gases than the blast furnace route. The electric arc furnace (EAF) is usually equipped with natural gas (NG) burners that melt down the scrap and decarburize the melt. Many activities are underway to replace NG, at least to a large extent, with hydrogen. Hydrogen has complex combustion properties, e.g. high burning velocity, low ignition energy, low volumetric energy density, and wide flammability limits, which places high demands on the burner design. Here, additively manufactured (AM) burners open up new avenues with regard to the gas/water routing, and thus show significant advantages over conventional burners when using hydrogen. These avenues are being explored within the HyInnoBurn project. This project is part of the German Clusters4Future initiative (supported by the German Federal Ministry of Education and Research, BMBF) with partners from the entire hydrogen value chain and focuses on the development of additively manufactured burners for flexible use of NG and hydrogen.
The presentation gives an overview of Computational Fluid Dynamics (CFD) simulations, manufacturing approaches and experiments at small-scale 50 kW and 450 kW burners. All burners are additively manufactured with a new and pure copper powder. High resolution combustion simulations show the fundamental flame structure, temperature and species distribution as well as the influence of increasing hydrogen amounts. While the 50 kW burner is examined with advanced laser diagnostics, the 450 kW burner is tested in an industrial sized furnace at the Gas- und Wärme-Institut (GWI) Essen. Difficulties and possible solutions for the change from NG to hydrogen are discussed.

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DTSTART:20230614T092000
DTEND:20230614T094000
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