Pore-type burner with silicon-carbide porous body

Abstract

A porous burner is configured for burning a fuel-air mixture and to generate a hot flue gas. The burner has a housing and porous material in the housing. The porous material is formed of silicone carbide that is resistant to high temperatures and facilitates combustion. The porous body in the housing is formed of a siliconized carbon fabric with a regular, uniform structure. The shape of the silicon carbide fabric deviates from a planar surface, for example with corrugations, and a plurality of such fabric sections are laid on top of one another.

1 . A pore-type burner for burning a fuel/air mixture for generating a hot flue gas, comprising: 
 a housing;    a porous body with pore material formed of porous, high-temperature-resistant silicon carbide disposed in said housing, said pore material being formed of siliconized woven carbon fabric disposed in an ordered, regular structure.    
   
   
       2 . The pore-type burner according to  claim 1 , wherein said woven fabric consists of silicon carbide having a shape diverging from a plane surface, and a plurality of pieces of woven fabric are arranged in layers on top of one another.  
   
   
       3 . The pore-type burner according to  claim 2 , wherein the woven fabric has an undulating shape.  
   
   
       4 . The pore-type burner according to  claim 1 , wherein said woven fabric consists of completely siliconized fibers.  
   
   
       5 . The pore-type burner according to  claim 1 , wherein said woven fabric is partially siliconized and contains a core consisting of pure carbon.  
   
   
       6 . The pore-type burner according to  claim 1 , wherein said ordered structures are configured to form zones of varying porosity.  
   
   
       7 . The pore-type burner according to  claim 3 , wherein said undulating shape is defined with axes of curvature and said axes of curvature of the undulations of a piece of woven fabric lie in a plane, and the pieces of woven fabric are arranged on top of one another with respective projections of the wave normals onto such a plane defined by the axes of curvature extend substantially perpendicular to one another.  
   
   
       8 . The pore-type burner according to  claim 7 , wherein the wave normals are disposed to form an angle of approximately 45° relative to a direction of a flow of the flue gas.