Oxygen blast furnace with CO2 capture and storage at an integrated steel mill-Part I: Technical concept analysis

The results show that the CO2 emission from an iron and steel mill can be significantly reduced by application of an oxygen blast furnace and CCS. By applying only the blast furnace process, the emissions can already be reduced by 1.2 Mt/a without storing the separated CO2. If captured CO2 is also purified and stored permanently, the emission can be further reduced by an additional 1.4 Mt/a. This is a significant reduction considering that the production of the mill stays the same as in the reference case. In addition to carbon footprint of the production, application of oxygen blast furnace also has significant impact on coke consumption and energy balance on the site.