Kraftanlagen Ag

Kurt Veser

Martin Frauenfeld

Hermann-Eugen Muller-Odenwald

Method for the removal of nitrogen from the exhausts of burners after they are cleaned of dust or sulfur, in which the nitrogen-bearing exhaust gases are reheated by the transfer of heat from the denitrogenated exhaust gases in a regenerative heat exchanger. Before they are finally heated to the temperature level of the reduction reaction, the nitrogen-bearing exhaust gases, and, after their reduction, the denitrogenated exhaust gases, are passed countercurrently to one another in a cyclical alternation, through heat exchanging storage masses in an additional catalytic converter serving as the main converter, whose surfaces are provided with catalytically active compounds.

Apparatus for the removal of nitrogen burner exhaust

A supporting matrix for catalytically active compounds, for use, for example, in catalysts for the catalytic cracking of nitrogen oxides, is constructed of a metal core (1), an intermediate layer (3) of vitreous enamel bonded onto this core, and a porous ceramic cover coating (5) applied to the vitreous enamel intermediate layer. The supporting matrix is made by dipping the metal core into a vitreous enamel slip followed by firing at 800.degree. to 900.degree. C. The enameled metal core is then fired in a second firing to form the ceramic cover coating which represents the actual support for the catalytically active compounds.

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Heidelberg, Germany

Kurt Veser