COMPOSITION FOR ABSORBING AND DISSOCIATING CARBON DIOXIDE IN EXHAUST GAS TO RECOVER IT AND CARBON DIOXIDE RECOVERING METHOD USING IT

摘要

PPROBLEM TO BE SOLVED: To provide a method for absorbing and dissociating COSB2/SBin an exhaust gas to efficiently recover COSB2/SBof high purity in a low energy consumption state. PSOLUTION: The carbon dioxide recovery composition in the method of carbon dioxide of high purity from the exhaust gas containing carbon dioxide contains 10-50 wt.% of diethanolamine and 10-35 wt.% of a piperazine compound A represented by the general formula [IIa] (wherein R11, R12, R13 and R14 are each same or different, and hydrogen or the like) and/or a piperazine compound B represented by the general formula [IIb] (wherein R21, R22, R23 and R24 are each same or different, and hydrogen or the like). PCOPYRIGHT: (C)2008,JPO&INPIT