INJECTOR-TYPE TWO-FLOW BURNER FOR BURNING GASEOUS FUEL

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 α_cent1, and that in peripheral orifices is α1,9, total excess-air coefficient by burner is α₁≥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 α_cent1, and total excess-air coefficient by burner is α₁1,01. EFFECT: enhanced stability of characteristics; reduced concentration of nitrogen oxides formed during combustion. 3 cl, 2 dwg