The system, fully designed and integrated by SARRALLE, enables the reheating furnace in the rolling mill to operate entirely on 100% green hydrogen instead of natural gas, completely eliminating carbon emissions from the combustion process.
Developed in collaboration with Nippon Gases, the system replaces traditional air–natural gas burners with hydrogen-based oxy-fuel burners, enhancing thermal efficiency and enabling cleaner, more sustainable steel production. Since hydrogen combustion produces only water vapor, the technology represents a key enabler for zero-emission manufacturing processes.
Reheating furnaces in steel plants can account for up to 80% of a facility’s total fuel consumption, making SARRALLE’s innovation a critical step toward decarbonizing the steel industry, which is responsible for roughly 9% of global CO₂ emissions.
Itsaso Auzmendi-Murua, Head of Hydrogen Business at SARRALLE, stated: “This project marks a pivotal step toward the future of the steel industry. It proves that green hydrogen combustion technology is now a reality. Decarbonizing industrial processes is possible, and we have demonstrated it in the field. We’re not only contributing to the environment but also improving production efficiency and process control. This system is a tangible example of how the steel plants of the future will operate and what solutions they can offer for energy and carbon management.”
The system allows rolling operations to be powered entirely by hydrogen rather than natural gas. The innovative design, manufacturing, and installation were all carried out by SARRALLE, achieving zero emissions and significantly improving energy efficiency.
This project also represents a major step forward in applying green hydrogen and oxygen combustion technologies within the industrial sector. Because hydrogen combustion produces only water vapor, it offers a practical pathway to decarbonize emission-intensive industrial processes.
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