| 摘要 |
PURPOSE:To simplify the structure of a burner and reduce the amount of nitrogen oxide generated by an alternate combustion heat accumulating type burner, in which a gas flow passage is provided across a pair of heat accumulating tanks arranged with a heat accumulating body therein, a combustion unit for burning fuel gas is provided in the gas flow passage between the pair of heat accumulating tanks and gas containing oxygen for combustion is supplied from a tank in the pair of heat accumulating tanks to the other tank in the same alternately to effect alternate combustion. CONSTITUTION:The title device is constituted so that catalysts, having reducing activity for nitrogen oxide under the coexistence of reducing gas or hydrogen carbonate gas and oxygen and acting as a heat accumulating body, are arranged in heat accumulating tanks 5a, 5b while a hydrogen carbonate gas supplying means 10a, 10b, supplying hydrogen carbonate gas directly to a site whereat temperatures in the heat accumulating tanks 5a, 5b of the side of guiding combustion waste gas produced in the combustion units 4a, 4b, are at a selective reducing active temperatures, are provided. |
