Removal of CO2 from flue gas

This invention concerns a method and plant for energy efficient removal of CO2 from flues gases by scrubbing the flue gas. The invention is especially suited for use in connection with thermal power plants fuelled with carbon-containing fuels, and it may easily be implemented into existing power plants. The invention is based on the realisation that the steam required in the stripping column(s) may be obtained by a second CO2 generating process with a steam system tuned to supplying the stripping column(s). Thus a process plant according to the invention will comprise three sections: a primary CO2 generating process that serves as the main product supplier, a CO2 capturing (often denoted scrubber) plant for capturing and separating CO2 from the flue gases in the primary and secondary CO2 generating processes, and a second CO2 generating process which serves as a second product supplier and which has a steam system tuned to deliver the required steam for running the desorption column(s) of the CO2 capturing plant.