Technologies
-> Selective Catalytic Reduction
Selective catalytic reduction systems work by chemically
reducing NOx (NO and NO2) to nitrogen (N2).
In a lean gas stream, it is necessary to add a reductant
to the system to enable this reaction. There are two
main classes of SCR system, defined by the source
of the reductant used. These are ammonia-SCR (of which
urea-SCR is the most common) and hydrocarbon-SCR (lean
NOx reduction).
Ammonia-SCR
Hydrocarbon-SCR
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