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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 13
SUMMARY:Tenova’s perspective for the future of pollution control in electric steelmaking
DESCRIPTION:A. Negri1
1 Tenova S.p.A., Italy


Key Words: emission, pollutant, steelmaking, fumes treatment plant, FTP, EAF, electric arc furnace, metallic charge, performance improvement, revamping.


Abstract

The main goal of fume treatment plants installed after electric arc furnaces have been, till today, to control temperatures, quenching and diluting the primary with the secondary fumes, and to remove dust with electrostatic precipitators or bag filters. Injection of activated carbon in the dust removal equipment often is present as a safety measure for the control of the micro-organics pollutants. Possible future scenarios can require different treatments, to comply on one side with presence of pollutants in the furnace off gas coming with low quality scrap, and on the other side with more stringent environmental requirement referring also to other source of pollution. It is therefore fundamental to identify first which of the above pollutants can be present in the fumes. This depends on the metallic charge melted in the furnace, and on the charging and melting method. Each component may be controlled in different ways: the reactions of oxidation, reduction, absorption and adsorption occur at different conditions, mainly related to a determined temperature window, turbulence and presence of reagents. This underlines the importance of designing a fume treatment plant locating each treatment in the position where it can be performed in the most economical way, e.g. promoting the reactions occurring at correct conditions of temperature and turbulence, avoiding the use of expensive catalyst and reagents as much as possible. In this paper considerations of basic engineering and cost estimation of the implementation of air pollution control known technologies to the electric arc furnace application are carried out.

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DTSTART:20230615T092000
DTEND:20230615T094000
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