Air pollution control device

An air pollution control device is an air pollution control device for reducing the amounts of NOx and Hg contained in flue gas 12 from a boiler 11. The air pollution control device includes: NH4Cl solution supply means 16 for spraying an NH4Cl solution 14 by a spray nozzle 15 into a flue gas duct 1...

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Main Authors SAKATA NOBUYASU, SHIJO RIKUMA, UKAI NOBUYUKI, MURAKAMI MORITOSHI, KUSHIOKA KIYONORI
Format Patent
LanguageEnglish
Published 15.09.2015
Subjects
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
FLUES
HEATING
LIGHTING
MECHANICAL ENGINEERING
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES
SEPARATION
TRANSPORTING
WEAPONS
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Summary:An air pollution control device is an air pollution control device for reducing the amounts of NOx and Hg contained in flue gas 12 from a boiler 11. The air pollution control device includes: NH4Cl solution supply means 16 for spraying an NH4Cl solution 14 by a spray nozzle 15 into a flue gas duct 13 at the downstream of the boiler 11; a mixer 17 provided on the downstream side of a region where NH4Cl is gasified, for promoting mixing, with the flue gas 12, HCl and NH3 which are generated when NH4Cl is gasified; a reduction-denitration device 18 including a denitration catalyst for reducing NOx in the flue gas 12 with NH3 and for oxidizing Hg under the coexistence with HCl; and a wet desulfurization device 22 for reducing the amount of Hg oxidized in the reduction-denitration device 18 using a limestone-gypsum slurry 21.
Bibliography:Application Number: US201013388496