RECOVERY OF CARBON DIOXIDE FROM FLUE GASES

摘要

A method of recovering carbon dioxide from a stream of flue gases includes cooling the stream of flue gases to a temperature suitable for efficient absorption of CO<SUB>2</SUB> from the stream by a predetermined sorbent system. The stream is contacted with the predetermined sorbent system to effect absorption of CO<SUB>2</SUB> from the stream, and the sorbent and absorbed CO<SUB>2</SUB> are separated from the stream of flue gases to form a CO<SUB>2</SUB>-rich absorbent stream. CO<SUB>2</SUB> is absorbed from the CO<SUB>2</SUB>-rich absorbent stream by application of heat to the absorbent stream to desorb the CO<SUB>2</SUB>. Energy released in the cooling step is utilised to provide the heat in the CO<SUB>2</SUB> desorption step. The invention also provides apparatus for recovering carbon dioxide from a stream of flue gases, and a plant energy management system.