由首钢钢研所和初轧厂共同研究的重油与高炉煤气混烧技术,从1980年起已在初轧厂应用至今。过去,初轧厂均热炉全部烧重油。为了节约重油充分利用高炉煤气,研究了重油与高炉煤气混烧技术。高炉煤气热值低,火焰传播速度慢,着火温度高。如煤气流速每秒超过10m,易产生脱火、断火、根部不燃烧等现象;如采用较低的煤气流速,则烧嘴结构就相当庞大,无法施工安装。为了设计较高的煤气喷出速度,采用重油雾化火炬连续点燃高炉煤气,使旋 The co-firing technology of heavy oil and blast furnace gas, jointly researched by Shougang Steel Research Institute and the preliminary rolling mill, has been used in the primary rolling mill since 1980. In the past, the first rolling mill were all burned heavy oil furnace. In order to make full use of the heavy oil to make full use of blast furnace gas, the technology of co-firing heavy oil and blast furnace gas was studied. Low calorific value of blast furnace gas, flame propagation speed is slow, the ignition temperature is high. Such as the gas flow rate per second over 10m, easy to produce off fire, off fire, the root does not burn and so on; such as the use of lower gas flow rate, the burner structure is quite large, construction and installation. In order to design a higher gas injection speed, the use of heavy oil atomized torch lit blast furnace gas, so spin