Study of Calcium Looping technology for Carbon Capture

Abstract

Carbon capture and storage technologies (CCS) are essential for mitigating the effects of climate change caused by CO2 emissions in the atmosphere.The application based on the reversible calcination/carbonation reactions of limestone materials, called Calcium Looping (Ca-L), is a promising CCS technology.In this study, thermal analysis was applied to evaluate the Cal-L process using Brazilian limestones as CO2 sorbents.As experimental design was considered the variables that affect the conversion of the reactions of carbonation.X-Ray Fluorescence and thermal analysis were performed for the characterization of the limestones in the calcination and carbonation process.The treatment by hydration was applied to improve the CO2 conversion.The results showed that after the treatment the limestone studied obtained a conversion of 72,5 % de kmolCO2/kmolCa + Mg.