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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14b
SUMMARY:A Solution to transition challenge through optimization of production facilities, CO2 emissions reduction and waste gas utilization
DESCRIPTION:Currently approximately two billion tons of steel are produced annually. The rapid industrialisation of developing nations has contributed to an addition of nearly one billion tons steel capacity over the past 20 years. CO2-intensive BF-BOF has been the preferred process method due to its scale, robustness, and feed flexibility. The potential to instantly replace BF-BOF with clean technologies like H2-based DRI or scrap-based EAF is constrained by the maturity of the technology, the economic impact of stranded assets, and the availability of resources (scrap & green H2) at the right quantity and price. Over the last decade, significant consolidation has happened in the steel industry, enabling steel businesses to optimize and reconfigure plant assets in order to achieve sustainable and effective production.

Our work demonstrates that replacement of old inefficient BFs with DRI plants fueled by waste gas or syngas can be the most effective near-term decarbonization strategy for steel plants having multiple BFs and/or having facilities at multiple locations. Our case demonstrates how the use of HBI in BF can reduce CO2 emissions by about 1.5 mtpa while maintaining the same level of crude steel production in a large (around 10 mtpa) BF-BOF-based integrated steel plant. The BF productivity would rise by about 10% with an increase of 140 kg/thm HBI, helping to shut down two smaller inefficient blast furnaces.

With the reduction of the coke rate by at least 45 kg/thm and around 140 kg/thm HBI addition in burden, the older smaller sinter & coke oven plant could also be decommissioned. Procuring power from renewable sources or a greener grid will reduce the usage of gas in inefficient power plants operation. Available gas has been considered for DRI plant operation. Other options for fueling DRI plants like syngas from waste and/or biomass gasification will also be further evaluated.
CLASS:PUBLIC
DTSTART:20230615T100000
DTEND:20230615T102000
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