Device for treating exhaust gas IV

Abstract

Device (1) for guiding and treating an exhaust gas flow comprising: a) an outer housing (2), an inlet pipe (10) adjoining the outer housing (2), and an outlet pipe (11) adjoining the outer housing (2); b) a flow channel (K) arranged in the outer housing (2) and guiding the exhaust gas flow, having a channel wall and several channel sections, which connects the inlet pipe (10) to the outlet pipe (11); c) wherein the flow channel (K) has two channel sections (K1a, K1b) with a common front channel wall (KW1), wherein the two channel sections (K1a, K1b) form a front pair, characterized in that: d) the flow channel (K) has two rear channel sections (K2a, K2b) with a common rear channel wall (KW2), wherein the two rear channel sections (K2a, K2b) form a rear pair, wherein: e) a first The SCR catalyst unit (31) is arranged in the flow channel (K) downstream of the two front channel sections (K1a, K1b),and f) that a second SCR catalyst unit (32) is arranged in the flow channel (K) downstream of the two rear channel sections (K2a, K2b).