| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for absorbing and dissociating CO<SB>2</SB>in an exhaust gas to efficiently recover CO<SB>2</SB>of high purity in a low energy consumption state. <P>SOLUTION: 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). <P>COPYRIGHT: (C)2008,JPO&INPIT |
