Patent ID: 7288230
Filing Date: 2007-10-30
Classification: F01N

Abstract:
1. A catalytic converter unit, the catalytic converter unit being an elongate unit having an inlet end, for receiving gas to be treated, and an opposite outlet end and comprising: a wall means comprising an inner shell bounding a treatment zone, an outer shell that laterally surrounds the inner shell in spaced relationship with the inner shell, and a plurality of partition walls dividing the space between the inner and outer shells into first and second transfer zones and at least one through-flow zone, wherein each zone is adjacent at least one other zone and each zone extends from the inlet end to the outlet end, the wall means includes a partition wall that divides the treatment zone into first and second segments, the first segment of the treatment zone is upstream of the second segment of the treatment zone with respect to flow from the inlet end of the catalytic converter unit towards the outlet end thereof, the first transfer zone is plugged at a location that is upstream of the partition wall in the treatment zone, and the second transfer zone is plugged at a location that is downstream of the partition wall in the treatment zone, and a catalytic converter element disposed in the first segment of the treatment zone, spaced from the partition wall, and wherein the first segment of the treatment zone is in flow communication with the first transfer zone and the second segment of the treatment zone is in flow communication with the second transfer zone.