Patent ID: 7182920

Claim:
A catalyzer for burning part of a gaseous fuel/oxidant mixture flowing through the catalyzer, the catalyzer comprising: a plurality of catalytically active channels; a plurality of catalytically inactive channels; and a plurality of sectors arranged consecutively in a main flow direction, each sector comprising a portion of the plurality of catalytically active and catalytically inactive channels, wherein the plurality of sectors comprise at least two sectors arranged consecutively in a main flow direction, wherein the at least two sectors comprise a first sector defining an inlet sector comprising the inflow side of the catalyzer and at least a second sector defining a mixing sector arranged downstream from the inlet sector, the channels of said mixing sector comprising a plurality of holes oriented transversely to the main flow direction and through which adjoining channels of the mixing sector communicate; wherein the plurality of sectors comprise an outlet sector comprising an outflow side of the catalyzer, the outflow sector constructed as a swirl generator that provides a swirl to a gas mixture flowing through the outlet sector; and wherein the catalyzer includes at least one of a smaller flow resistance in the inlet sector than any following sector, and a higher catalytic activity in the inlet sector than any following sector.