Methodology to calculate the CO₂ emission reduction at the coal-fired power plant: CO₂ capture and utilization applying technology of mineral carbonation

This study introduces a novel methodology to calculate the carbon dioxide (CO₂) emission reduction related to residual emissions, calculating the CO₂ emission reduction through a 2 MW (40 tCO₂/day) carbon capture and utilization (CCU) plant installed at a 500 MW coal-fired power plant in operation, to evaluate the accuracy, maintainability, and reliability of the quantified reduction. By applying the developed methodology to calculate the CO₂ emission reduction, the established amount of CO₂ reduction in the mineral carbonation was evaluated through recorded measurement and monitoring data of the 2 MW CCU plant at the operating coal-fired plant. To validate the reduction, the accuracy, reproducibility, consistency, and maintainability of the reduction should be secured, and based on these qualifications, it is necessary to evaluate the contribution rate of nationally determined contributions (NDCs) in each country. This fundamental study establishes the concept of CCU CO₂ reduction and quantifies the reduction to obtain the validation of each country for the reduction. The established concept of the CCU in this study can also be applied to other CCU systems to calculate the reduction, thereby providing an opportunity for CCU technology to contribute to the NDCs in each country and invigorate the technology.