| 摘要 |
PROBLEM TO BE SOLVED: To provide burner equipment for a heating furnace capable of reducing the concentration of NOx in combustion waste gas, in the equipment comprising a fuel supply section for supplying a fuel into the furnace and an oxygen containing gas supply section for supplying combustion oxygen containing gas into the furnace separately mixing and combusting and the fuel and the combustion oxygen containing gas in a fuel supply section side. SOLUTION: There is provided a main combustion burner 5a having a main combustion discharge outlet 15 a main fuel G1 into a furnace. There is further provided a sub-combustion burner 5b having a sub-combustion discharge outlet 17 for discharging a sub-fuel G2 independently of the main fuel G1 from an outer peripheral portion that surrounds the whole periphery of the main combustion discharge outlet 15 at a slower discharge speed than that of the main fuel. |
