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Article

In Situ Catalytic Methanation of Real Steelworks Gases

1
Chair of Process Technology and Industrial Environmental Protection, Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria
2
Voestalpine Stahl GmbH, Research and Development Ironmaking, Voestalpine Straße 3, 4020 Linz, Austria
3
K1-MET GmbH, Stahlstraße 14, 4020 Linz, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Dino Musmarra
Energies 2021, 14(23), 8131; https://doi.org/10.3390/en14238131
Received: 9 November 2021 / Revised: 29 November 2021 / Accepted: 29 November 2021 / Published: 3 December 2021
(This article belongs to the Special Issue Catalytic Processes for CO2 Utilization)
The by-product gases from the blast furnace and converter of an integrated steelworks highly contribute to today’s global CO2 emissions. Therefore, the steel industry is working on solutions to utilise these gases as a carbon source for product synthesis in order to reduce the amount of CO2 that is released into the environment. One possibility is the conversion of CO2 and CO to synthetic natural gas through methanation. This process is currently extensively researched, as the synthetic natural gas can be directly utilised in the integrated steelworks again, substituting for natural gas. This work addresses the in situ methanation of real steelworks gases in a lab-scaled, three-stage reactor setup, whereby the by-product gases are directly bottled at an integrated steel plant during normal operation, and are not further treated, i.e., by a CO2 separation step. Therefore, high shares of nitrogen are present in the feed gas for the methanation. Furthermore, due to the catalyst poisons present in the only pre-cleaned steelworks gases, an additional gas-cleaning step based on CuO-coated activated carbon is implemented to prevent an instant catalyst deactivation. Results show that, with the filter included, the steady state methanation of real blast furnace and converter gases can be performed without any noticeable deactivation in the catalyst performance. View Full-Text
Keywords: power-to-gas; catalytic methanation; steelworks; real gases; activated carbon; catalyst poison and degradation power-to-gas; catalytic methanation; steelworks; real gases; activated carbon; catalyst poison and degradation
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MDPI and ACS Style

Wolf-Zoellner, P.; Medved, A.R.; Lehner, M.; Kieberger, N.; Rechberger, K. In Situ Catalytic Methanation of Real Steelworks Gases. Energies 2021, 14, 8131. https://doi.org/10.3390/en14238131

AMA Style

Wolf-Zoellner P, Medved AR, Lehner M, Kieberger N, Rechberger K. In Situ Catalytic Methanation of Real Steelworks Gases. Energies. 2021; 14(23):8131. https://doi.org/10.3390/en14238131

Chicago/Turabian Style

Wolf-Zoellner, Philipp, Ana Roza Medved, Markus Lehner, Nina Kieberger, and Katharina Rechberger. 2021. "In Situ Catalytic Methanation of Real Steelworks Gases" Energies 14, no. 23: 8131. https://doi.org/10.3390/en14238131

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