- Most of the nitrogen oxide abatement processes currently applied are selective catalytic reduction (SCR) processes that selectively reduce nitrogen oxides by using ammonia (NH₃) or urea as reducing agent, and it is a process that has had many commercial achievements since it was first proposed. The main mechanisms of the entire process are as follows.
- We are the best catalyst and technologies for SCR process
De-NOx (SCR/SNCR) system
Description of SCR system
SNCR
(Selective Non-Catalytic Reduction) Technology Overview
- To reduce NOx (nitrogen oxides), selective catalytic reduction (SCR) is commonly used. The necessary factors are 1) the reducing agent, 2) SCR catalyst, and 3) temperature of the off gas required for the catalyst.
- However, in some facilities, especially boilers, when a reducing agent (such as Urea, or NH₃) is added to the combustion space, NOx can be reduced by up to 70% without catalyst, if the temperature conditions are right.
- In general, it is known that for SNCR, the temperature of the appropriate area in the furnace is from 850 ℃ to a maximum of 1,100 ℃, but in actual field, it is confirmed that 850~950 ℃ generally achieves a maximum NOx reduction efficiency of 50~70%.
- We have various achievements in these SNCR technologies, and through CFD (computation fluid dynamics), we identify the optimal SNCR facility installation location, identify the optimal performance conditions to reduce nitrogen oxides, and obtain optimal nitrogen oxide reduction efficiency.
- We provides optimal solution and engineering for Selective Non-Catalytic Reduction Technology, and integrated technology from equipment supply installation and commissioning.
