The CAP-FLEX project addresses the critical challenge of decarbonizing cement production, which accounts for 8% of global CO2 emissions, by advancing a novel, retrofittable technology for the generation of a concentrated CO2 stream from limestone calcination. This strong and innovative idea builds upon the FUELFLEX® Pyrolyzer platform developed by FLSmidth Cement, introducing a unique integration of electric heating and oxyfuel combustion for high purity CO2 production. The technology is designed for flexible, cost-effective integration into existing cement plants. The technology’s dual capability (maximizing alternative fuel use and enabling high-purity CO2 capture) marks a significant step forward in industrial decarbonization.
The CAP-FLEX project is executed by a strong consortium, comprising FLSmidth Cement (industry lead), DTU-KT and DTU Sustain (advanced research and modelling), DTI (electric heating and pilot development), and Mannok Cement (industrial host). The project features a robust work plan that includes industrial data analysis, lab-scale validation, advanced process modelling, and full-scale demonstration. Comprehensive risk management, milestone tracking, and effective governance underpin the execution strategy.
The project’s potential impact is substantial: if deployed across Denmark’s cement sector, the technology could enable the capture of 60-90% of a plant’s CO2 emissions, corresponding up to 2 Mt CO2/year nationally. Such reductions would play a crucial role in helping Denmark achieve its 2030 and 2050 climate targets. In addition to direct emissions abatement, the project will generate broader societal and economic benefits, supporting job creation, public acceptance of CCUS, and establishing Denmark as a global leader in green technologies.
