To provide a CO2 recovery device and a CO2 recovery method which can further reduce the concentration of amine compounds remained in a decarbonated exhaust gas and discharged.
In the CO2 recovery device, a CO2-containing exhaust gas 11A is brought into contact with a CO2 absorption liquid 12 to eliminate CO2 to form a purified exhaust gas 11B at an absorption tower 13, and CO2 is separated from the CO2 absorption liquid to recover a CO2-absorbing liquid 12 at an absorbing liquid regeneration tower 14, and the lean solution 12B from which the CO2 has been eliminated in the absorbing liquid regeneration tower 14 is reused at the CO2 absorption tower 13. The CO2 recovery device is provided with a cooling tower 70 that cools the CO2-containing exhaust gas that contains CO2, provided upstream of the CO2 absorption tower 13. The temperature (T2) of the purified exhaust gas 11B discharged from the CO2 absorption tower is set lower (T1>T2) than the temperature (T1) of the CO2-containing exhaust gas 11A containing CO2 and cooled at the cooling tower; and the condensed water 44 resulting from condensing water vapor discharged from the absorbing liquid regeneration tower 14 is vaporized at an evaporator 90.
TANAKA YUJI
NAGAYASU HIROTSUGU
HIRATA TAKUYA
OISHI GOJI
KAMIJO TAKASHI
TATSUMI MASAHIKO
YAGI YASUYUKI
KAIHARA KAZUHIKO
KANSAI ELECTRIC POWER CO
| JPS5189876A | 1976-08-06 | |||
| JP2011115724A | 2011-06-16 | |||
| JP2011136258A | 2011-07-14 | |||
| JPS5926926A | 1984-02-13 |
| WO2012153812A1 | 2012-11-15 | |||
| WO2010102877A1 | 2010-09-16 |
Jun Takamura