Experiments on simultaneous absorption of SO

2

and NO

X

from sintering flue gas via a composite absorbent NaClO

2

/NaClO were carried out. The effects of various operating parameters such as NaClO

2

concentration (

m

s

)

NaClO concentration (

m

p

)

molar ratio of NaClO

2

/NaClO (

M

)

solution temperature (

T

R

)

initial solution pH

gas flow (

V

g

) and inlet concentration of SO

2

(

C

S

) and NO (

C

N

) on the removal efficiencies of SO

2

and NO were discussed. The optimal experimental conditions were determined to be initial solution pH=6

T

R

=55℃ and

M

=1.3 under which the average efficiencies of desulfurization and denitrification could reach 99.7% and 90.8%

respectively. Moreover

according to the analysis of reaction products

it was found that adding NaClO to NaClO

2

aqueous solution is favorable for the generation of ClO

2

and Cl

2

which have significant effect on desulfurization and denitrification. Finally

engineering experiments

were performed and obtained good results demonstrating that this method is practicable and promising.