| abstract |
For the purification of waste gas containing carbon compounds and nitrogen oxides by means of a regenerative post-combustion system, at least two regenerators (A, B, C) filled with heat accumulator bodies ( 7 a, 7 b, 7 c ) and connected by a combustion chamber ( 10 ) are provided, wherein the waste gas is alternately heated in a regenerator (A, B, C), the carbon compounds are oxidised in the combustion chamber ( 10 ), and, with the addition of a nitrogen-hydrogen compound, the nitrogen oxides are reduced in the combustion chamber ( 10 ) thermally and thus not catalytically. Remaining nitrogen oxides are removed by means of a catalytically active heat accumulator layer ( 6 a, 6 b, 6 c ) and the addition of a further nitrogen-hydrogen compound in the regenerator (A, B, C) from which the clean gas exits. |