Post Combustion Carbon Capture
In the post combustion process, the carbon dioxide that is produced during combustion is removed from the flue gas stream in a separation unit using a solvent. The capture process is based on chemical absorption. The solvent most frequently encountered for carbon dioxide capture is monoethanolamine (MEA), an amine solvent. The cooled flue gas is brought into contact with the solvent in the absorber at specific temperature. The CO2 in the flue gas stream is absorbed by the solvent and subsequently removed. This method is suitable for retrofitting existing power plants with a carbon dioxide recovery unit. Post combustion capture technology is installed at about a dozen facilities worldwide.