Haldor Topsoe’s SCR (Selective Catalytic Reduction) process (also called DeNOx) is the most efficient process for removing nitrogen oxides – NOx from flue gas streams.  In the process, NOx reacts with ammonia over a catalyst to form elementary nitrogen and water without creating any secondary pollutants. 

Topsoe's SCR DeNOx technology and DNX® catalyst series are the result 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 and biomass fired utility boilers
• gas turbines
• oil-refining and chemical plants
• stationary diesel engines
• waste incinerators

Experience:

Over the past 20 years, Topsoe has gained a very diverse experience from more than 600 SCR installations worldwide. Topsoe has supplied process know-how, equipment and catalysts for NOx abatement in a variety of applications, including power stations, single-cycle gas turbines at temperatures up to 550°C/1025°F, waste incinerators at temperatures down to 170°C/340°F, ethylene crackers and FCC units in refineries and sulphuric acid plants with more than 8% SO2.  Due to its unique design, the Haldor Topsoe catalyst can operate efficiently in high ash content flue gas streams.

Scion brings this experience, as integrated SCR packages, to clients in South Africa.

For SCR brochure downloads, please visit the Haldor Topsoe website.