Outline of all potential Power to Gas integrations in blast furnace ironmaking: A systematic review
Jorge Perpiñán, Manuel Bailera, Begoña Peña
Abstract
This work presents the first systematic review analysis of potential Power to Gas integrations in blast furnace ironmaking . The primary objective of the paper is to evaluate the PtG technology implementation in both conventional air-blown and full oxygen blast furnaces , considering different BFG recycling routes (upper, shaft or tuyeres), and synthetic gases (SNG, H2 or syngas). Employing a systematic methodology , the paper compares all the studies using 14 Key Performance Indicators (KPI) and elaborates a discussion on the main findings and limitations, proposing areas for future research. PtG application enables air-blown blast furnaces to cut emissions to 1060 kg CO2 /t HM . With PtG and top gas recycling, oxygen blast furnaces achieve a reduction to 747 kg CO2 /t HM , and when combined with geological storage, the reduction further drops to 435 kg CO2 /t HM . Additionally, the authors propose a novel PtG-ironmaking integration based on the findings of this paper.