| abstract |
A method of recovering carbon dioxide from a stream of flue gases, includes: contacting the stream at a gas pressure above atmospheric pressure with an aqueous solvent system, containing ammonium, carbonate and bicarbonate ions, at a temperature above 10ºC to effect absorption of CO2 from the stream, and separating the solvent containing the absorbed CO2 (as carbonate, bicarbonate and CO2(aq)) from the stream of CO2-leaner flue gases to form a CO2 and/or bicarbonate-rich solvent stream. In a second aspect, the CO2-leaner flue gases are cooled by contact with water that dissolves ammonia therefrom, and recycling said dissolved ammonia back to said solvent system. Apparatus is also disclosed. |