Burner device

The invention relates to a burner device. The burner device comprises an air channel, an inner tube and a raw gas channel; the air channel is sequentially provided with a first diffusion port, a choketube, a smooth belt and a second diffusion port; an oxygen-enriched air distributor is arranged between the first diffusion port and the choke tube; a raw gas distribution ring is arranged at the position, corresponding to the oxygen-enriched air distributor, of the air channel; a counter flange is arranged on the outer side of the raw gas channel; a catalyst channel is formed in the counter flange; and a catalyst inlet is formed in the end of the catalyst channel. Latticed supporting frames used for supporting the inner tube are arranged in an inner cavity of an outlet of the second diffusion port. A ceramic heat insulating layer sleeves the catalyst channel; the ceramic heat insulating layer is of a cylindrical structure; and the shape of the inner wall of the cylindrical structure is in fit with that of the ou