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Arian Ebneyamini,Jun Young Kim,Zezhong John Li,John R. Grace,C. Jim Lim,Naoko Ellis 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.87 No.-
This paper investigates the equilibrium performance of CaO hydration and CaCO3/Ca(OH)2 co-calcinationin calcium-looping processes. A novel lime hydration configuration is proposed, introducing saturatedsteam as the reactivating reagent and direct-heat-removal medium. The proposed hydrator generates asubstantial amount of superheated steam, used elsewhere as required. The slaked lime and limestone arecalcined simultaneously in a methane-concentrated oxy-fuel calciner. The equilibrium performance ofthe co-calciner is studied at different reactor temperatures, operating pressures, solid/gas feed ratios andfeed compositions. A correlation is proposed which estimates the required gaseous feed composition forautothermal, coke-free and complete sorbent regeneration using this novel technology.