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 vapor without creating any secondary pollutants.

Umicore'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.

The structure of Umicore's DNX catalyst provides for three different surface pore sizes. This feature gives the catalyst a very high activity with conversions in excess of 95% as well as better resistance to typical masking and catalyst poisons. 

THE NEW DUAL FUNCTION DNO CATALYST

Umicore has developed a new series of Dual Function catalysts for NOx AND CO oxydation.  It is now possible to locate the CO catalyst with the SCR catalyst downstream of the ammonia injection point.  Savings in physical space along with pressure drop can be realized by eliminating the high temperature CO catalyst, but also due to the high reactivity of the new DNO series, catalyst volumes can be reduced for the same performance. 

See more benefits included in the DNO-Series catalyst for Dual Function applications.

UMICORE IS A US LEADER IN CATALYST

• Efficiency: up to 98% (NOx outlet less than 1ppm)

• Ammonia Slip: Less than 0.25 ppm

• Operating life: over 100,000 hours w/o replacement

• Scale: 13,000,000 lbs/hr. (1,300 MWe)

• SO2 oxidation: as low as <0.05%

• Operating Temp: as low as 300 deg. F to as high as 1,050 F

• Dust Content: Up to 25%