Adoptation of flue gas recirculation

low oxygen burning

and low NOx burners

can effectively reduce NOx content in the flue gas

as well as improve slagging condition in the furnace

at the same time

the explosion failure occurred in coal-pulverizing system can be avoided.Results of practical monitoring show that the NOx emission from Russian-made 420 t/h boilers of unit no.9 and unit no.10 in one power plant has decreased 36.4% and 50.26% respectively after adopting the above-mentioned measures

while other parameters in operation can also satisfy the requirements

having good economic benefits and environmental protectiveness.