This technology integrates two major strategies: hydrogen-rich blast furnace ironmaking and top gas recycling and reuse, effectively reducing blast furnace carbon emissions through both direct and indirect hydrogen-based carbon replacement reactions. By injecting hydrogen to reduce coke consumption and improve reduction efficiency, combined with top gas recovery and reutilization technologies, the overall CO₂ reduction performance is significantly enhanced.

We present the first integrated and systematic carbon reduction solution combining hydrogen-rich ironmaking with blast furnace gas recycling and reuse in Taiwan.
 
 1. A high-temperature reduction database for a full-scale blast furnace simulation model. 
 
 2. A single-tuyere injection flow rate of 750 Nm³/h with hydrogen, meeting international benchmark.
 
 3. The external carbon capture and reforming process (reduced energy consumption by 37%. 
 
 4. New catalyst improved CO₂ conversion rates to 60%.

This integrated solution has been successfully implemented in collaboration with China Steel Corporation (CSC) for on-site production of low-carbon hot metal. By supplying low-carbon upstream materials, this technology is supporting the domestic metal products industry—including sectors such as machine tools, automotive components, and hand tools—and driving the overall industrial transition toward a net-zero carbon future.