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Title:
CO2 RECOVERY DEVICE AND RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2017/122478
Kind Code:
A1
Abstract:
Provided are a CO2 recovery device having a simplified structure and a recovery method with which it is possible to reduce the amount of circulating fluid that mixes in with a CO2 absorption liquid during a desulfurizing and cooling process. The CO2 recovery device is equipped with: an advanced desulfurization and cooling column for removing sulfur oxides from exhaust gas, and decreasing the temperature of the exhaust gas; a CO2 absorption column for removing CO2 in exhaust gas through contact with a CO2 absorption liquid; and a regeneration column for regenerating the CO2 absorption liquid and recovering CO2 by emitting CO2 from the CO2 absorption liquid, and transporting the regenerated CO2 absorption liquid to the CO2 absorption column. The advanced desulfurization and cooling column is equipped with: a circulation line for circulating a desulfurization/cooling circulating fluid for desulfurizing and cooling by supplying the desulfurization/cooling circulating fluid from the lower section of the advanced desulfurization and cooling column to the upper section thereof; a final-filling part positioned above the position where the circulation line and the upper section of the cooling column connect; and a first cooling device for cooling the circulating fluid. The liquid flowing down from the final-filling part and the circulating fluid from the circulation line directly mix with one another.

Inventors:
TANAKA HIROSHI (JP)
HIRATA TAKUYA (JP)
KAMIJO TAKASHI (JP)
TSUJIUCHI TATSUYA (JP)
Application Number:
PCT/JP2016/086881
Publication Date:
July 20, 2017
Filing Date:
December 12, 2016
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B01D53/62; B01D53/14; B01D53/50; B01D53/78; C01B32/50
Domestic Patent References:
WO2013144864A12013-10-03
WO2013144889A12013-10-03
Foreign References:
JP2005087828A2005-04-07
JP2009530073A2009-08-27
JP2013512088A2013-04-11
JP4216152B22009-01-28
Other References:
See also references of EP 3403713A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
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