Effect of hydrogen metallurgy on carbon emissions of the traditional steel manufacturing processes

The rapid progression of steel enterprises is accompanied by serious environmental pollution. In the context of the dual-carbon target strategy, there is an urgent need for transformation within this sector. Hydrogen metallurgy, as a revolutionary new technology, is expected to achieve zero emissions. However, few studies have explored its impact on carbon emissions in the steel manufacturing industry. Therefore, based on the reduction mechanisms of hydrogen metallurgy, a model for carbon emissions and energy consumption has been established. The results indicate that, for the 8.2 Mt yield of crude steel, hydrogen metallurgy can effectively reduce carbon emissions by 297.2 kg/t compared to the traditional steelmaking process. Additionally, this paper analyzes the factors affecting carbon emissions in the carbon/hydrogen metallurgical hybrid manufacturing system. The conclusion further explores the future measures that steel enterprises can adopt to reduce carbon emissions through green energy and optimization of production processes.