Experimental Investigation of Sulfation Phenomena in Calcium Looping Systems Integrated in Cement Plants

[Image: see text] The sulfation phenomena of raw meal materials involved in calcium looping (CaL) applications to capture CO(2) from cement plants are investigated. The effects on sulfur capture capacity and reaction rates of different raw meals, temperatures, SO(2) concentration, and degree of belite conversions have been investigated using a thermogravimetric analyzer. SO(2) is shown to react with both free CaO and CaO in belite. An apparent reaction order of 0.8 and activation energies of 20.9 and 34.7 kJ/mol were estimated for cases with no-belite and belite formations, respectively. Results indicate that CaL systems for CO(2) capture will also remove SO(2) emissions in cement plants.