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Report No.
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Process modeling of iACRES by ASPEN Plus and evaluation of the whole system

Hayashi, Kentaro*; Suzuki, Katsuki*; Kurihara, Kohei*; Nakagaki, Takao*; Kasahara, Seiji  

Applying Active Carbon Recycling Energy System to ironmaking (iACRES) process is a promising technology to reduce coal usage and CO$$_{2}$$ emissions. To evaluate performance of iACRES quantitatively, a process flow diagram of the blast furnace model with iACRES was developed using Aspen Plus. CO$$_{2}$$ emission reduction and exergy analysis was predicted by using mass and energy balance obtained from the simulation results. The followings were investigated as iACRES: solid oxide electrolysis cells (SOEC) with CO$$_{2}$$ capture and separation (CCS), SOEC without CCS, and a reverse water-gas shift reactor as the a CO$$_{2}$$ reduction reactor powered by a high-temperature gas-cooled reactor. iACRES could provide CO$$_{2}$$ emission reductions of 3-11% by recycling CO and H$$_{2}$$, whereas the effective exergy ratio decreased by 1-7%.

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