SCR DeNOx for removing nitrogen oxides
The SCR (Selective Catalytic Reduction) DeNOx process is the most efficient process for removing nitrogen oxides - NOx - from gases, offering NOx-reduction efficiencies up to 99%. In the SCR process NOx reacts with ammonia injected into the gas over a catalyst to form molecular nitrogen and water vapour without creating any secondary pollutants.
Topsoe's SCR DeNOx technology and DNX® catalyst series are the results of extensive in-house research and development and can be tailored to meet any client or legislative requirements.
SCR DeNOx applications
Topsoe’s SCR DeNOx process and catalysts are suitable for treating off-gases from a long range of different industries and applications including
- fossil-fuel fired boilers (coal, gas, oil, lignite)
- biomass-fired boilers
- gas turbines
- oil-refining and chemical plants
- stationary and marine engines
- waste incinerators
Topsoe's SCR experience
Over the past 25 years, Topsoe has gained a very diverse experience from more than 700 SCR installations worldwide. Topsoe has supplied catalysts and process know-how for NOx abatement in a variety of applications, including coal-, oil- gas- and 100% biomass-fired boilers, single- and combined-cycle gas turbines, industrial and municipal waste incinerators, ethylene crackers and FCC units in refineries and sulphuric acid plants with more than 80,000 ppm SO2. Operating temperatures range from 160°C/320°F to 550°C/1020°F