Co2 recovery system and co2 recovery method

Details Co2 recovery system and co2 recovery method Co2 recovery system and co2 recovery method

B - Operations, Transporting

01

D

B01D 53/62 (2006.01) B01D 53/14 (2006.01)

Patent

CA 2719602

[Object] To further reduce the concentrations of basic amine compounds remaining in decarbonated flue gas. [Means of Solution] A CO2 recovery system includes an absorber 2 and a regenerator 3. The absorber 2 includes a CO2 absorbing section 21 and a water-washing section 22. The CO2 absorbing section 21 allows flue gas 101 to come into contact with a basic amine compound absorbent 103 so that the basic amine compound absorbent 103 absorbs CO2 in the flue gas 101. The water-washing section 22 allows the decarbonated flue gas 101A in which the amount of CO2 has been reduced in the CO2 absorbing section 21 to come into contact with circulating wash water 104 and to be washed with the wash water 104 so that the amounts of the basic amine compounds entrained in the decarbonated flue gas 101A are reduced. The regenerator 3 releases CO2 from the basic amine compound absorbent 103 the CO2 absorbed therein. The CO2 recovery system further includes a concentrating unit 24 for concentrating the wash water 104 from the water-washing section 22. Condensed water generated during concentration is returned to the water-washing section 22.

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