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Energies 2017, 10(4), 451; doi:10.3390/en10040451

Power-to-Steel: Reducing CO2 through the Integration of Renewable Energy and Hydrogen into the German Steel Industry

1
JARA-ENERGY, 52425 Jülich, Germany
2
Institute of Energy and Climate Research: Electrochemical Process Engineering IEK-3, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
3
JARA-ENERGY, 52074 Aachen, Germany
4
Institute for Future Energy Consumer Needs and Behavior (FCN), RWTH Aachen University, Mathieustr. 10, D-52074 Aachen, Germany
5
Chair of Fuel Cells, RWTH Aachen University, c/o Institute of Electrochemical Process Engineering (IEK-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52428 Jülich, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Bin Chen
Received: 13 February 2017 / Revised: 16 March 2017 / Accepted: 17 March 2017 / Published: 1 April 2017
(This article belongs to the Section Electrical Power and Energy System)
View Full-Text   |   Download PDF [2207 KB, uploaded 1 April 2017]   |  

Abstract

This paper analyses some possible means by which renewable power could be integrated into the steel manufacturing process, with techniques such as blast furnace gas recirculation (BF-GR), furnaces that utilize carbon capture, a higher share of electrical arc furnaces (EAFs) and the use of direct reduced iron with hydrogen as reduction agent (H-DR). It is demonstrated that these processes could lead to less dependence on—and ultimately complete independence from—coal. This opens the possibility of providing the steel industry with power and heat by coupling to renewable power generation (sector coupling). In this context, it is shown using the example of Germany that with these technologies, reductions of 47–95% of CO2 emissions against 1990 levels and 27–95% of primary energy demand against 2008 can be achieved through the integration of 12–274 TWh of renewable electrical power into the steel industry. Thereby, a substantial contribution to reducing CO2 emissions and fuel demand could be made (although it would fall short of realizing the German government’s target of a 50% reduction in power consumption by 2050). View Full-Text
Keywords: power-to-steel; CO2 reduction in steel industry; sector coupling; renewable energy for steelmaking; alternative steelmaking processes power-to-steel; CO2 reduction in steel industry; sector coupling; renewable energy for steelmaking; alternative steelmaking processes
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Otto, A.; Robinius, M.; Grube, T.; Schiebahn, S.; Praktiknjo, A.; Stolten, D. Power-to-Steel: Reducing CO2 through the Integration of Renewable Energy and Hydrogen into the German Steel Industry. Energies 2017, 10, 451.

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