Demonstration Sites

C4U aims to advance 2 emerging carbon capture technologies, known as DISPLACE and CASOH, which have the potential to tackle up to 94% of the CO2 sources in a steel mill. Both DISPLACE and CASOH technologies involve high temperatures gas-solid separation processes that reduce the exergy penalty associated with CO2 capture.  

DISPLACE – High-temperature sorption-displacement processing hydrotalcites for CO2 sorption and recovery of steam. 

CASOH – Calcium assisted steel mill off-gas hydrogen process for blast furnace gas. 

DISPLACE pilot plant – Swerim facilities, Luleå (Sweden) 

The DISPLACE technology is a high temperature sorption-displacement process for CO2 recovery from off-gases or combustion product flue gases at a steelwork.  

DISPLACE is one of the two new technology demonstrators by the C4U project, developed as part of Work Package 1 (DISPLACE process for reheating ovens). The plant is located at Swerim’s site in Luleå (Sweden), just under the Arctic Circle. The site is close to the SSAB steelworks, which is the source of real industrial process gases on which the new technology proves itself at an inspiring scale.  

SWERIM facilities in Luleå (Sweden)

DISPLACE Pilot Plant

CASOH pilot plant – ArcelorMittal’s Gas Lab Site, Oviedo (Spain) 

The CASOH technology allows the conversion of Blast Furnace Gas into a H2-enriched gas, free of CO2 and with higher calorific value, while producing a concentrated stream of CO2 and high-grade heat. Importantly, the reversible gas-solid reactions within this process allow for high energy efficiencies and extensive opportunities for integration in a steel mill plant.  

CASOH is the second technology demonstrator featured in the C4U project, developed as part of Work Package 2 (CASOH process for blast furnace gas). The plant operates at ArcelorMittal’s Gas Lab Site (Asturias, Spain) and uses real Blast Furnace Gas from ArcelorMittal Asturias. You can hear more about the CASOH process from Carlos Abanades (Research Professor Spanish National Research Council) here. 

CASOH Pilot Plant

View of CASOH Pilot Plant