The system used for reheating materials before rolling consumes a great deal of gas fuel, and the process that produces the most GHG emissions. To cool the
walking beams2) and
skids3) that transfer material inside the furnace, water coolant is used, resulting in heat loss accounting for 10~15% of input heat. Therefore, in 2020, Hyundai Steel introduced an Evaporating Cooling System
(ECS) at the large rolling heating furnace in our Incheon Steelworks, which recovers heat from the coolant as steam. As the highly pressurized, high-temperature water passes through the heating furnace and is evaporated, this system absorbs heat and cools the furnace, allowing the heat generated in this process to be reused as steam. Having introduced the ECS, we expect to create profits of KRW 1.8 billion a year by supplying a heat source to the local community.
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