Sulphation and carbonization of oil shale CFBC ashes in heterogeneous systems

Abstract

To explain chemical reactivity of oil shale ashes formed in circulating fluidized bed boilers towards SO2 and CO2, heterogeneous gas-solid and gas-solid-water model systems were studied. For comparison, the ashes from boilers of pulverized firing were used. The effect of pre-treatment conditions, differences in chemical and phase composition as well as physical properties of the ashes on the binding parameters were estimated. © 2005 Estonian Academy Publishers.