Application of Selective Non Catalytic Reduction (SNCR) Denitration Technology in W-flame Boiler

This article introduces the engineering application of non catalytic reduction (SNCR) denitrification technology in a certain thermal power plant, and provides a detailed introduction to the main equipment types, key technical parameters, and design coal quality of the thermal power plant. Further elaborated on the background of the transformation of ultra-low nitrogen oxide emissions in thermal power units, key indicators of SNCR system design, including: NOx concentration and denitrification efficiency at the inlet and outlet of SNCR system, predicted impact of SNCR system on boiler operation efficiency, design value of ammonia escape in the system, and service life of the device. At the same time, a detailed description was given of the process flow and main equipment systems of the non catalytic reduction (SNCR) denitrification technology project, including urea solution preparation system, urea solution storage and transportation system, urea solution mixing and distribution system, urea solution injection system, as well as supporting thermal measurement control system and electrical system. Through the control of actual operating parameters and operational effects of the SNCR device, it is demonstrated that the SNCR system renovation of the thermal power plant has achieved the expected goals, achieving stable ultra-low emissions of nitrogen oxides in the unit, and providing a new technical route that can be referenced for the denitrification renovation of similar units.