An Update on the Development of the CSIRO's CS-Cap Combined CO2 and SO2 Capture Process

Abstract The successful implementation of the leading technology for post combustion capture (PCC) of carbon dioxide (CO 2 ), i.e. absorption/desorption using alkanolamines, still faces several challenges. For countries like Australia, that do not have flue gas desulfurization (FGD) installed at coal-fired power stations, removal of acid gases stronger than CO 2 (e.g. SOx) prior to PCC becomes a costly affair, particularly when emissions of these gases can be as high as 500-600 ppm from brown coal power stations, compared to the desired limit of 2 and CO 2 from coal-fired power station flue gas. Proof of concept has been completed at the CSIRO Loy Yang CO 2 capture pilot plant in Victoria, Australia, where a CO 2 loaded amine absorbent was used to remove SO 2 from a slip stream of the power station flue gas. This resulted in the generation of a SO 2 loaded amine absorbent which has since been used in subsequent evaluation of potential absorbent regeneration methods.