Wet flue-gas desulfurization apparatus and method of wet...

Details Wet flue-gas desulfurization apparatus and method of wet... Wet flue-gas desulfurization apparatus and method of wet...

2006-09-20

2010-06-08

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

C422S168000

Reexamination Certificate

active

07731926

ABSTRACT:
Flue gas of boiler is introduced through gas inlet part of flue-gas desulfurization apparatus, and absorbent liquid sprayed from spray nozzle is trapped in recirculation tank. There, agitation is performed by oxidation agitator to thereby oxidize SO2absorbed from the flue gas into gypsum. In the tank, oxidation air is fed from posterior air pipe and anterior air pipe behind and ahead of liquid propulsion by the propeller. Thus, even when the amount of oxidation air must be increased in accordance with an increase of boiler load, the oxidation efficiency can be enhanced without increasing the number of agitators. Then the apparatus with which even when the amount of oxidation air fed to the liquid trapping section is increased, highly efficient oxidation can be performed without increasing the number of agitators installed and the operating cost.

REFERENCES:
patent: 5429808 (1995-07-01), Kuroda et al.
patent: 6041272 (2000-03-01), Michiki et al.
patent: 5-317642 (1993-12-01), None
patent: 8-000949 (1996-01-01), None
patent: 2000-317259 (2000-11-01), None
patent: 2001-120946 (2001-05-01), None
English language Abstract JP 5-317642, dated Dec. 3, 1993.
English language Abstract JP 8-000949, dated Jan. 9, 1996.
English language Abstract JP 2001-120946, dated May 8, 2001.
English language Abstract JP 2000-317259, dated Nov. 21, 2000.

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