Title:
METHOD AND APPARATUS FOR SUPPRESSING OXIDIZABLE SUBSTANCE FOR FLUE GAS DESULFURIZATION
Document Type and Number:
Japanese Patent JP3743159
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower running cost by mixing a part of an untreated flue gas to oxidizing air in an apparatus comprising an absorption tower for absorbing and removing SO2 in a flue gas and suppressing the formation of oxidizable substances by blowing oxidizing air to an absorption solution brought into contact with a flue gas.
SOLUTION: In a flue gas desulfurization apparatus, a flue gas sent to an absorption tower 3 is brought into contact with an absorption solution 1 to remove SO2 and then the resultant flue gas is discharged to the outside. The absorption solution 1 which absorbs SO2 is dripped to a liquid storage part 1a and oxidized by oxidizing air supplied to the liquid storage part 1a by the operation of an oxidizing air blower 5. In this case, a flue gas mixing line 6 is branched at a middle of an inlet side duct 3a connected with an inlet of the absorption tower 3 and connected with the suction side of the oxidizing air blower 5. In the middle of the flue gas mixing line 6, a flow rate adjusting damper 7 is installed and the opening of the damper 7 is controlled, so that a prescribed amount of a flue gas is enabled to be mixed with oxidizing air to suppress excessive oxidation reaction of the absorption solution 1 in the liquid storage part 1a.
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Inventors:
Shigeru Kobayashi
Application Number:
JP10279698A
Publication Date:
February 08, 2006
Filing Date:
April 14, 1998
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
B01D53/34; B01D53/50; B01D53/77; (IPC1-7): B01D53/50; B01D53/77; B01D53/34
Domestic Patent References:
| JP8299754A | ||||
| JP6277445A | ||||
| JP62065927A |
Attorney, Agent or Firm:
Tsunemitsu Yamada
Seiichi Otsuka
Seiichi Otsuka