During the 9th High Temperature Solid Looping Cycles Network Meeting, Navid Khallaghi (University of Manchester) presented the techno-economic evaluation of the blast furnace gas utilization with Ca-Cu looping cycle for hydrogen-enriched syngas production. The study showed the potential of the Calcium Assisted Steel-mill Off-gas Hydrogen (CASOH) production, at 10 bar and 753°C, by combining the Ca-Cu looping with the sorption enhanced water gas shift (SEWGS) technology. The calcination pressure was identified as an important parameter with a major effect on the overall performance of the process. Sensitivity analysis showed that performing the calcination at a pressure of 0.5 bar results in significant reduction of the thermal demand of the process coupled with a slight increase in the electricity demand.
Blast furnace gas utilisation with Ca-Cu looping cycle for hydrogen-enriched syngas production