| 摘要 |
FIELD: heat-power engineering. SUBSTANCE: proposed two- flow injector-type burner includes gas-dispensing unit with at least one tube supplying fuel to central round orifice; taper flame holder is located near outlet shear of said orifice; according to invention, peripheral orifices are located around central orifice and gas-dispensing unit is provided with additional tubes for supply of gaseous fuel to peripheral orifices. Excess-air coefficient in central orifice is alphacent<1, and that in peripheral orifices is alpha>1,9, total excess-air coefficient by burner is alpha1>=1,01. According to variant when peripheral orifices which are supplied with atmospheric air under action of rarefaction in furnace are located around central orifice, excess-air coefficient in central orifice is alphacent<1, and total excess-air coefficient by burner is alpha1>1,01. EFFECT: enhanced stability of characteristics; reduced concentration of nitrogen oxides formed during combustion. 3 cl, 2 dwg
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