Porous Body for a Porous Burner, Method for Manufacturing a Porous Body for a Porous Burner and Porous Burner

摘要

Preheat and the gas supply areas are manufactured from a carbon fiber-reinforced silicon carbide ceramic. An oxide is coated in the silicon carbide. The protective layer is made of cordierite and/or yttrium silicate. The pore body has porosity of 20-30 volume % in the preheat area and more than 80 volume % in the gas supply area and pore size of 2-8 mm. High strength and thermally conductive fibers are used in the preheat and gas supply areas. Both areas are formed as corrugated wave location. Mesh size and/or lattice width, thickness, k-number, thermal conductivity and heat treatment of the fiber, number of waves and SiC content are measured in the preheat and gas supply areas. The wave number decreases, the wave height, the K-number and the mesh size of the fiber increase in the external ends of the both areas. The fiber orientation is arranged transverse to a successive direction of the gas supply area which exhibits pores and/or channels which are parallel or in an angle more than 0[deg] to the successive direction. Verges are intended for the gas supply area and are covered by the carbon fibers. Independent claims are also included for: (a) production of pore body; and (b) pore burner.