An alkaline solution ref lux path which refluxes an alkaline solution being discharged from an alkaline solution discharge port 101 of an absorber 100 to an alkaline solution introduction port 102 to absorb carbon dioxide and the like, and an alkaline solution reflux path which refluxes a regenerated...http://www.google.com.au/patents/US20070163443?utm_source=gb-gplus-sharePatent US20070163443 - System and method for recovering carbon dioxide in exhaust gas