CO2 reduction using a blast furnace utilizing hydrogen - dew point meter and oxygen concentration meter

Introduction of measurement instruments for managing CO2 reduction using a carbon recycling blast furnace utilizing hydrogen.

Around us, we supply high-quality steel of the world's highest standards, such as ordinary steel, special steel, ultra-high tensile steel plates, and electrical steel plates, to industrial machinery and automobiles, which are essential for a carbon-neutral society. We aim for "green steel," which targets decarbonized steelmaking by utilizing CCUS (carbon capture, utilization, and storage). As part of this initiative, the development of steelmaking technology using hydrogen is underway. One example is hydrogen reduction technology, which involves synthesizing methane from carbon dioxide and hydrogen emitted from a reduction furnace (methanation) and using this as a reducing agent to remove oxygen from iron ore (Fe2O3) used in blast furnaces. By reducing low-grade iron ore solely with hydrogen instead of coal, we can minimize carbon dioxide emissions during steel production. In addition to developments utilizing hydrogen, efforts are also being made to produce steel products by rapidly melting direct reduced iron and scrap in electric furnaces.

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