FIELD: machine building.
SUBSTANCE: exhaust gas treatment system in question comprises: first metering device (371) arranged to supply a first additive to the exhaust gas stream; first reduction catalytic device installed after said first metering device (371) and containing a breakthrough catalyst primarily for reducing nitrogen oxides (NOx) with additive and, secondarily, for the oxidation of the additive; oxidation catalyst (310) installed after said first reduction catalyst (331); particulate filter (320) mounted after said oxidation catalyst (310); and second metering device (372) installed after said particulate filter (320) and arranged to supply a second additive to said exhaust gas stream; second reduction catalytic device (332) installed after said second metering device (372) and arranged to reduce nitrogen oxides in said exhaust gas stream with at least one of said first and said second additive.
EFFECT: exhaust gas processing system is proposed.
26 cl, 7 dwg, 1 tbl
