GAS TREATMENT APPARATUS

摘要

The present invention relates to apparatus (1) for treating an exhaust gas stream, particularly an exhaust gas stream from an internal combustion engine. The apparatus comprises several compartments (7, 9) within which one or more treatments are to be performed on a gas stream and through which the gas stream is to flow sequentially. A compartment (7) containing a treatment element (8) for catalytic oxidation, then a mixing region (12) including addition means (16) for adding a reducing agent to the gas stream. The mixing region also includes turbulence inducing means (18) to induce turbulence within the gas stream. Then at least one further compartment (9) containing a treatment element (20) for a catalytic treatment. The turbulence inducing means (18) include at least one shell arranged substantially concentrically within the mixing region.