At present,the coal-fired units use the selective catalytic reduction(SCR) technology for denitrification treatment of the flue gas to be comparatively much,but many of them are newly constructed units accompanied again with SCR denitrification facility to form a complete set under condition in which the contract of main unit having already been signed,it is inavoidably affecting the boiler.

There are no performance test codes for SCR flue gas denitration equipment in China at present.

Discussion on the design request of SCR denitrification island in W-shaped flame boiler of 600MW supercritical units;