Mixer for selective catalytic reduction of exhaust gases

Abstract

The subject of the application is a mixer for selective catalytic reduction of exhaust gases, the longitudinal cross-section of which is U-shaped, comprising an exhaust gas inlet, an exhaust gas flow chamber, an exhaust gas outlet and an injector seat, characterized in that in the central part of the exhaust gas flow chamber (2), transversely to the direction of exhaust gas flow, a blade mixer (5) is located, comprising two opposing rows of blades (6), each of the blades (6) being a plate element arranged parallel to the vertical axis of the mixer housing (7). The first row of blades (6) on the side of the exhaust gas inlet (1) comprises blades (6) whose free ends are directed towards the mixer housing (7), and the second row of blades (6) situated on the side of the exhaust gas outlet (3) from the mixer comprises blades (6) arranged symmetrically with respect to the axis transverse to the direction of exhaust gas flow.In each row, the spatial arrangement of half of the blades (6) constituting it is a mirror image, relative to the longitudinal axis of the mixer housing, of the spatial arrangement of the other half of the blades (6) constituting a given row. A guide plate (8) is located in the inlet part of the exhaust gas flow chamber (2).