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New approach for quantification of perfluorocarbons resulting from high voltage anode effects

Dion Lukas, Gaboury Simon, Kiss László, Poncsák Sándor et Lagacé Charles-Luc. (2018). New approach for quantification of perfluorocarbons resulting from high voltage anode effects. Dans : 147th Annual Meeting & Exhibition, TMS Ligth Metals 2018 , March 11-15, 2018, Phoenix, AZ.

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Résumé

The methodology used for accounting PFC emissions resulting from aluminum smelting have been developed nearly 20 years ago. There has not been any update on this methodology since 2008 and recently published research demonstrated possible avenues for improvements resulting in increased accuracy. Current models used in the aluminum industry quantify PFC emissions linearly, based on the monthly average polarized anode effect duration for entire pot lines. To potentially increase the precision of the quantification process, other approaches, composed of non-linear models, were used to estimate the emissions of PFC during individual high voltage anode effects. Gas monitoring was performed in different smelters and the efficiency of these methods was evaluated and discussed. The potential benefits and drawbacks related to those quantification methodologies were evaluated by extrapolating results for significant operation periods. Additionally, with this analysis, it was possible to assure time-consistency between the original quantification methodology and the new approaches explored in this paper.

Type de document:Matériel de conférence (Non spécifié)
Date:11 Mars 2018
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Liens connexes:
Mots-clés:aluminium production, anode effects, perfluorocarbons quantification, tetrafluoromethane, hexafluoroethane, production d'aluminium, effets d'anode, quantification des perfluorocarbures, tétrafluorométhane, hexafluoroéthane
Déposé le:27 janv. 2021 22:23
Dernière modification:27 janv. 2021 22:23
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