Simulation and Techno-Economic Analysis of a Power-to-Hydrogen Process for Oxyfuel Glass Melting

Sebastian Gärtner, Daniel Rank, Michael Heberl, Matthias Gaderer, Belal Dawoud, Anton Haumer and Michael Sterner
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Sebastian Gärtner: Research Center on Energy Transmission and Storage (FENES), Faculty of Electrical and Information Technology, University of Applied Sciences (OTH) Regensburg, Seybothstrasse 2, D-93053 Regensburg, Germany
Daniel Rank: Research Center on Energy Transmission and Storage (FENES), Faculty of Electrical and Information Technology, University of Applied Sciences (OTH) Regensburg, Seybothstrasse 2, D-93053 Regensburg, Germany
Michael Heberl: Research Center on Energy Transmission and Storage (FENES), Faculty of Electrical and Information Technology, University of Applied Sciences (OTH) Regensburg, Seybothstrasse 2, D-93053 Regensburg, Germany
Matthias Gaderer: Chair of Regenerative Energy Systems (RES), Campus Straubing for Biotechnology and Sustainability, Technical University Munich, Schulgasse 16, D-94315 Straubing, Germany
Belal Dawoud: Laboratory of Sorption Processes (LSP), Faculty of Mechanical Engineering, Technical University of Applied Sciences (OTH) Regensburg, Galgenbergstraße 30, D-93053 Regensburg, Germany
Anton Haumer: Faculty of Electric and Information Technology, Technical University of Applied Sciences (OTH) Regensburg, Seybothstrasse 2, D-93053 Regensburg, Germany
Michael Sterner: Research Center on Energy Transmission and Storage (FENES), Faculty of Electrical and Information Technology, University of Applied Sciences (OTH) Regensburg, Seybothstrasse 2, D-93053 Regensburg, Germany

Energies, 2021, vol. 14, issue 24, 1-24

Abstract: As an energy-intensive industry sector, the glass industry is strongly affected by the increasingly stringent climate protection targets. As established combustion-based production systems ensure high process stability and glass quality, an immediate switch to low greenhouse gas emission processes is difficult. To approach these challenges, this work investigates a step-by-step integration of a Power-to-Hydrogen concept into established oxyfuel glass melting processes using a simulation approach. This is complemented by a case study for economic analysis on a selected German glass industry site by simulating the power production of a nearby renewable energy park and subsequent optimization of the power-to-hydrogen plant performance and capacities. The results of this study indicate, that the proposed system can reduce specific carbon dioxide emissions by up to 60%, while increasing specific energy demand by a maximum of 25%. Investigations of the impact of altered combustion and furnace properties like adiabatic flame temperature (+25 °C), temperature efficiency ( Δ ξ = −0.003) and heat capacity flow ratio ( Δ z H L = −0.009) as a function of H 2 content in the fuel mixture and resulting furnace efficiencyindicate that pure hydrogen-oxygen combustion has less impact on melting properties than assumed so far. Within the case study, high CO 2 abatement costs of 295 €/t CO 2 -eq. were determined. This is mainly due to the insufficient performance of renewable energy sources. The correlations between process scaling and economic parameters presented in this study show promising potential for further economic optimization of the proposed energy system in the future.

Keywords: Power-to-Gas; hydrogen; electrolysis; oxyfuel; glass industry; decarbonization; carbon dioxide emissions; renewable energies (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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