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VERSION:2.0
METHOD:PUBLISH
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ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Borgward“
SUMMARY:Opportunities of blast furnace ironmaking to contribute to decarbonisation targets via carbon dioxide capture and utilisation
DESCRIPTION:As the most significant carbon consumer in the integrated steel mill, the blast furnace (BF) is expected to undertake the most considerable contribution to reduce CO2 emission and achieve a sustainable iron and steelmaking process. Currently, carbon capture and utilisation (CCU) to BFs is considered one of the hotspot technologies to sufficiently support the large CO2 emission reduction. A potential way is to capture CO2 from the ironmaking process and convert it into a reductant for the iron ores, feeding back to the blast furnace. This paper integrated the CO2 capture, electrochemical CO2 conversion and top gas recycling technology to improve the traditional blast furnace. Our work focuses on exploring different pathways of CCU, BF and hot blast stoves and evaluating their environmental performances through a two-stage mass and energy modelling with respect to minimise CO2 emission. With different integrated CCU ironmaking system pathways, the overall ironmaking process could save 80 kg/tHM of fresh coke or abate around 80% CO2 emission compared to that of the traditional ironmaking process. The electricity required of the current CCU system causes higher energy consumption than the traditional blast furnace. However, future progress in CO2 conversion technologies with high energy efficiency would improve the competitiveness of the integrated CCU ironmaking system. This work is expected to provide a guideline for allocating and using different CO2 emission sources to achieve a carbon-neutral blast furnace ironmaking process. 
CLASS:PUBLIC
DTSTART:20220830T163500
DTEND:20220830T170000
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