高炉富氧喷煤技术研究开发的进展

The progress of research and development in BF oxygen-coal injection

近年来,研究开发了一系列高炉富氧喷煤关键技术,如氧煤枪、炉前供氧与安全控制、煤粉流量计量与控制以及煤粉混合喷吹等技术。氧煤枪在包钢、鞍钢试用效果良好,单枪喷煤量和供氧量分别达到1200～2500kg/h和150～300m^3/h。首台高炉炉前供氧及安全控制装置将在天津铁厂投入使用。电容噪声传感器及相关仪可用于支、总管煤粉流量的测量。煤粉燃烧促进剂A、B可大大提高煤粉的燃烧率。

In recent years some key technologies in BF oxygen-coal injection such as oxygen-coal lance,oxygen supply and safe control,pulverized coal flow rate metering and controlling and mixed coal injection were developed.The oxygen-coal lance works well on BFs at Baotou Steel and Anshan Steel.The coal injection rate and oxygen supply rate by one lance reached 1200~ 2500 kg/h and 150~300 m3/h.The first oxygen supply and safe control device will put into operation at Tianjin Iron Works.Moreover,the capacitance-nosie type sensor and correlator may be applied to metering pulverized coal flow rate in main feed pipe and branch pipes.The combustion promoter A and B may improve the combustion of pulverized coal greatly.