The "3D" industrial pilot to demonstrate an innovative process for capturing CO2 from industrial activities is now running at ArcelorMittal’s Dunkirk site. With support from the European Union’s Horizon 2020 Research and Innovation program, the project aims to validate replicable technical solutions for carbon capture. The "3D" project, driven by a consortium including TotalEnergies, ArcelorMittal, Axens and IFP Energies Nouvelles, is a major step towards decarbonizing industries that are highly emissive of CO2, such as steelmaking. This industrial pilot should allow the performance of the DMXTM carbon capture process developed in IFPEN’s labs over the last ten years to be verified. The project was launched in May 2019, and the building of the demonstrator began in 2020 under Axens’ supervision. Last December, the pilot’s main modules, including a 22 meter tower, were delivered and assembled at ArcelorMittal’s site in Dunkirk. The phases of building the pilot and connecting it to the plant have now been completed, and the unit is ready for start-up.This demonstration, which is scheduled to last for 12 to 18 months, is the final stage before the technology’s full-scale deployment. The carbon capture facility will process steelmaking gases: it will demonstrate the effectiveness of the carbon capture process by separating the CO2 from other gases. During the demonstration stage, it will capture 0.5 tons of CO2 an hour, i.e. more than 4,000 tons a year.