Quantitative evaluation of CO2 emission reduction of active carbon recycling energy system for ironmaking by modeling with aspen plus

Katsuki Suzuki, Kentaro Hayashi, Kohei Kuribara, Takao Nakagaki, Seiji Kasahara

Research output: Contribution to journalArticle

7 Citations (Scopus)


The use of the Active Carbon Recycling Energy System in ironmaking (iACRES) has been proposed for reducing CO2 emissions. To evaluate the performance of iACRES quantitatively, a process flow diagram of a blast furnace model with iACRES was developed using Aspen Plus, a chemical process simulator. The CO2 emission reduction and exergy analysis was predicted by using the mass and energy balance obtained from the simulation results. iACRES used a solid oxide electrolysis cell (SOEC) with CO2 capture and separation (CCS), an SOEC without CCS, and a reverse water-gas shift reactor as the CO2 reduction reactor powered by a high-temperature gas-cooled reactor. iACRES could provide a CO2 emission reduction of 3-11% by recycling carbon monoxide and hydrogen, whereas the effective exergy ratio decreased in all cases.

Original languageEnglish
Pages (from-to)340-347
Number of pages8
JournalISIJ International
Issue number2
Publication statusPublished - 2015 Jan 1



  • Carbon flow
  • Carbon monoxide
  • Exergy analysis
  • High-temperature gas-cooled reactor

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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