Multicyclic study on the carbonation of CaO using different limestones

摘要: Different samples of limestones, with small differences in their stoichiometry, have been studied comparatively. The carbonation reaction has for a large area isothermal temperatures. conditions the multicyclic experiments calcination/carbonation were: temperature 670°C, heating time 60 min and carrier gas CO2. final conversion depends mainly on time. calcination percentage CaO that it not conversed to CaCO3 repeated experiments. quantity carbonated, same sample, affects values coefficients kinetic model fit reaction. In two four samples, was high enough comparison other calcite. At sample A reduction during first five cycles is less than at from literature. Under above experimental — specific consisted calcite can absorb larger quantities CO2 dolomite.