RADIANT TUBE BURNER

PURPOSE:To cause heat resisting particles to carry a catalyst and to prevent the generation of an unmaterial substance during incomplete combustion. CONSTITUTION:An outer pipe 1, an inner pipe 2, and a guide pipe 3 are concentrically disposed. The lower end parts of the inner pipe 2 and the guide pipe 3 and the upper and lower end parts of the guide pipe 3 and the outer pipe 1 are intercommunicated to form an annular passage. A number of heat resisting particles 7 on the surfaces of which a catalyst is carried are located in the annular passage. The heat resisting particles 7 are forced to circulatingly flow within the outer pipe 1 and the guide pipe 3 by means of a combustion gas flow injected in the outer pipe 1 from the inner pipe 2.