Selective Non-catalytic Reduction Flue De-NO_x System Start-up Commissioning Test in 600 MW Supercritical Boiler

SNCR flue gas denitrification theory and denitrification process of 600 MWsupercritical boiler is introduced,so this paper analyzes the influence on the concentration of NOx emissions of urea solution flow,spray gun position and the unit load when the boiler is burning lignite,moreover the operation guidance under the general operating conditions is given.Primary optimized operation conclusions under different load are drawn a conclusion,simultaneous summarize the SNCR flue gas denitrification commissioning experience in engineering and point out the problems that need attention when commissioning.