MODERN APPLICATION OF INERT OPEN-CELL POROUS CERAMIC MATERIALS FOR DESIGNING NON-CONVENTIONAL SELF-ASPIRANTING BURNERS
Abstract
The paper refers to the application of inert porous ceramic materials with large open pores in the construction of porous burners, capable of contributing to increasing the combustion stability, increasing the combustion speed, and reducing nitrogen oxide emissions (NO and NO2). Two categories of porous ceramic materials were considered adequate for this purpose. A glass foam obtained by expansion of the glass waste and coal fly ash used the capacity of SiC as an expansion product to produce the suitable permeable body for the burning area of fuel-air mix. The method for making this porous piece had a special character of originality, the sintering/expanding heating being obtained through an own unconventional microwave heating technique, preponderantly direct and partially indirect. The porous ceramic piece for the combustion zone was procured from Germany. Testing the burner equipped with the two ceramic pieces confirmed the viability of the innovative solution.
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