FIELD: power industry.
SUBSTANCE: gas-overflow opening of swirling-type furnace includes cylindrical housing mounted on the dividing furnace panel between fuel combustion chambers in furnace, and supply system of secondary air through it; at that, the opening is provided with additional shell mounted on inner side of the housing and forming additional air annular channel-nozzle between housing and shell, which is connected by means of additional distributing channel increasing in cross section to tangentially mounted supply connection pipe of secondary air in respect to the housing; at that, outlet hole of annular channel is directed towards fuel combustion chamber.
EFFECT: more complete fuel combustion.
5 cl, 8 dwg
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