SCR Mixer
The evaporation and decomposition of the urea aqueous solution (AdBlue) that is injected into the exhaust gas flow upstream of the SCR catalyst plays a crucial role for the performance of an SCR system. Ammonia being produced as a result of this decomposition must be homogeneously distributed over the catalyst surface in order to match perfectly with the NOx distribution.
|
|
This distribution depends strongly on the design and the geometry of the exhaust system. For most applications where high NOx reduction is desired, a mixer is used in order to enhance the above mentioned ammonia distribution. |
|
|
At Tenneco, the adjustment and optimization of the SCR system is carried out using a specially equipped flow lab and engine benches as well as CFD simulation. |
without mixer Tenneco Mixer
on Top