Limits on the integration of power to gas with blast furnace ironmaking

Manuel Bailera*, Takao Nakagaki, Ryoma Kataoka


研究成果: Article査読

2 被引用数 (Scopus)


This article compares 16 Power to Gas integrations for blast furnace ironmaking by using 17 key performance indicators. The study includes 4 types of PtG (PtH2, PtSNG using pure CO2, PtSNG using treated BFG, and PtSNG using BFG), two types of blast furnaces (air-blown and oxygen) and two types of fossil replacement (coal or coke). The blast furnaces are modelled using the Rist diagram, validated with literature data (<2% deviation). For most cases, the decrease in total CO2 emissions is around 150–215 kgCO2/tHM per MW/(tHM/h) of electrolysis. The energy penalty (in terms of electricity consumption) was found to be mostly independent on the size of the PtG plant, but greatly dependent on the type of integration (10.1–20.6 MJ/kgCO2). If significant CO2 reductions are aimed, self-sufficiency in electricity consumption will not be achieved. In practice, the maximum PtG capacity to install is limited by the decrease in the flame temperature. In this context, the PtSNG integration consuming treated BFG, applied to OBF for coal replacement, provides the best results. Assuming a 500 tHM/h blast furnace, the PtG capacity of this concept could be as large as 490 MW and avoid up to 21% of the CO2 emissions.

ジャーナルJournal of Cleaner Production
出版ステータスPublished - 2022 11月 10

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 建築および建設
  • 環境科学(全般)
  • 戦略と経営
  • 産業および生産工学


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