Volume 27: Closing Carbon Cycles – A Transformation Process Involving Technology, Economy, and Society: Part II

An Economic Evaluation of the Technologies to Power a Hydrogen Steel Production Process Under a CO2 Emission Limit Filippo Guidi

Abstract

Decarbonising the steel industry is among the ultimate climate challenges. This study analyzes how the cost optimal mix of technologies to meet the demand of a green-steel manufacturing process using direct reduction with hydrogen and electric arc furnace (HDR-EAF) changes under progressively lower CO2 emission limits. The modellization was done thanks to the PyPSA framework and includes renewable generators, different hydrogen production techniques and burners technologies, as well as a carbon capture system. It is shown that a big reduction in CO2 emission is possible with a little increase in CO2 price and a totally green production of steel can be achieved.

Keywords green steel, direct hydrogen reduction, renewable energy resources