Production of Negative-Emissions Steel Using a Reducing Gas Derived from DFB Gasification
نویسندگان
چکیده
A dual fluidized bed (DFB) gasification process is proposed to produce sustainable reducing gas for the direct reduction (DR) of iron ore. This novel steelmaking route compared with established DR, which based on natural gas, and emerging DR technology using electrolysis-generated hydrogen as gas. The DFB-DR found that meets requirement reactor, existing MIDREX plants, produced an energetic efficiency comparable route. path only considered allows negative CO2 emissions, enabling a 145% decrease in emissions relative traditional blast furnace–basic oxygen furnace (BF–BOF) cost between 45–60 EUR/MWh obtained, makes it competitive route, but not estimation liquid steel production shows that, Sweden, cannot compete BF–BOF routes without associated carbon revenue attributed emissions. When are set equal, becomes most price >60 EUR/tCO2.
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ژورنال
عنوان ژورنال: Energies
سال: 2021
ISSN: ['1996-1073']
DOI: https://doi.org/10.3390/en14164835