A system for upgrading by-product gases in steel mills by using hydrogen produced via electrolysis and the method thereof

摘要

The present invention supplies oxygen generated by water electrolysis to the ironmaking process, and by-product gas generated in the ironmaking process is subjected to alcoholization or methanation reaction with hydrogen generated by water electrolysis to regenerate it as a renewable fuel, and the regenerated renewable fuel In order to recover the heat generated in the alcoholization or methanation process and supply it as energy for the ironmaking process, oxygen generated by performing water electrolysis is supplied to the ironmaking unit performing the ironmaking process, and hydrogen is supplied as a by-product gas of the steelworks. a water electrolysis unit for supplying to the fuel regeneration unit for alcoholization or methanation of a fuel regeneration unit for producing a renewable fuel by alcoholizing or methanating the supplied by-product gas generated in the steel mill by using the hydrogen supplied from the water electrolysis unit; and a renewable fuel storage unit for storing the renewable fuel generated by the fuel regeneration unit; provides a steelworks byproduct gas nitrification system using electrolytic hydrogen, characterized in that it comprises a.