摘要
高炉初始煤气流是影响整个煤气流分布的重要环节,初始煤气流主要受送风制度的影响。为了进一步弄清送风制度各控制参数对初始煤气流分布的影响,采用数值模拟的方法,对风口直径、鼓风量及喷煤3个方面进行了研究。结果表明:缩小风口直径或者增大鼓风量,均会使炉缸中心煤气流速增加;从吹透能力方面讲,调节风口直径比调节鼓风量有优势,而从抑制顺时针漩涡方面则调节鼓风量更有利;喷煤后,回旋区上方煤气流速明显增大,炉缸中心煤气流速变化不大。
The initial gas flow distribution of blast furnace is an important factor that influences the whole gas flow distribution. The initial gas flow is mainly controlled by blast system. In order to ascertain the effect of blast parameters on initial gas flow distribution, three parameters, i.e. tuyere diameter, blast volume and pulverized coal injection were studied by numerical simulation. The results showed as follows： decreasing tuyere diameter and increasing blast volume could improve the velocity of gas flow in hearth center; adjusting tuyere diameter was better than blast volume from the viewpoint of blast penetration. However, to restain the clockwise whirlpool, adjusting blast volume was better. Pulverized coal injection could obviously increase the velocity of gas flow above the raceway, while the velocity of gas flow in hearth center changed little.
出处
《钢铁研究》
CAS
2014年第5期1-4,共4页
Research on Iron and Steel
关键词
煤气流
送风制度
数值模拟
gas flow
blast system
numerical simulation
