Axetris LGD F200 OEM Modules for ammonia (NH3) detection are being successfully used today to control and test the process of urea injection for NOx reduction.
Reduction of NOx emissions as a major environmental goal
Nitrogen Oxides are a family of poisonous, highly reactive gases. These gases form when fuel is burned at high temperatures. All major international environmental agencies, e.g. US-EPA, EEA, MEP-China, etc. strictly dictate NOx emission limits today.
One of the most popular techniques to reduce NOx emissions is reduction of NOx using urea (effectively NH3), whereby NOx is reduced to nitrogen and water. The reduction often taken place with the aid of a catalyst (Selective Catalytic Reduction – SCR), but at times, a non-catalytic process (Selective Non-Catalytic Reduction – SNCR).