CO2 capture pilot test at a pressurized coal fired CHP plant

CO 2 capture from pressurized flue gas using a variation of the hot potassium carbonate process has been demonstrated at a pilot plant with authentic flue gas from the Värtan combined heat and power plant in Stockholm. The plant has served as a proof of concept installation, and has confirmed that: (i) the pre-treatment of the flue gas is adequate for protecting the absorbent from degradation, (ii) the CO 2 capture efficiency is high (>98%), (iii) no harmful components are fed to the gas turbine, and (iv) absorbent degradation is low (0.85 mole percent/month).