Simulation on Blast Volume Distribution of Blast Furnace Tuyeres with Double Hot Blast Main Structure
Wenpeng LIU,Yan JIN*,Xiaosen DONG
Key Lab for Ferrous Metallurgy and Resources Utilization, Ministry of Education,
Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
Abstract:According to the requirement of blast furnace smelting, the distribution of blast volume was changed directly by using the tuyeres with different diameters or blocking one tuyere, which further improve the smelting environment. The numerical simulation method was used to study the blast volume distribution of the 3200 m3 blast furnace with double hot blast main structure of hot-blast system in a steel work, by establishing fluid dynamics model to simulate the flow field of the hot blast system from different aspects. The results showed that the asymmetry of blast volume distribution increased when blocking single or double tuyeres, but the volume difference between each tuyere decreased when plugging the two symmetrical tuyeres on the two sides of the entrance, the inhomogeneity was only 4.02%, less about 10% than non-blocking tuyere. When reducing diameter of single tuyere 10 mm, the distribution of blast volume was basically unchanged, and it had a significant effect only to reduced tuyere itself and the tuyere with the farthest distance from the entrance, and heterogeneity increased significantly. Reducing the diameter of one tuyere with the farthest distance from the entrance, lead the largest volume variation of 21.57% between each tuyere, which was about 4 times as normal condition.
刘文鹏 金焱 董晓森. 高炉双热风总管结构的风口风量分布模拟[J]. 过程工程学报, 2017, 17(6): 1148-1155.
Wenpeng LIU Yan JIN Xiaosen DONG. Simulation on Blast Volume Distribution of Blast Furnace Tuyeres with Double Hot Blast Main Structure. Chin. J. Process Eng., 2017, 17(6): 1148-1155.
[1]孟祥龙,张福明,曹朝真,等.首钢高炉喷煤技术发展与创新[J].中国冶金, 2014, (3):21-26 [2]陈永星,王广伟,张建良,等.高炉富氧喷吹焦炉煤气理论研究[J].钢铁, 2012, 47(2):12-16 [3]华建明,张龙来.鼓风动能对高炉冶炼的影响及控制[J].炼铁, 2005, 24(4):5-8 [4]陈辉,张卫东,马泽军,等.高炉送风系统压力损失的理论解析[J].钢铁, 2011, 46(2):22-25 [5]李黎明.高炉风口温度场和流场的数值模拟 [D]. 武汉理工大学, 2013. [6]Natsui S, Nogami H, Ueda S, et al.Simultaneous Three-dimensional Analysis of Gas–Solid Flow in Blast Furnace by Combining Discrete Element Method and Computational Fluid Dynamics[J].Isij International, 2011, 51(1):41-50 [7]Zhou C, Tang G, Wang J, et al.Comprehensive Numerical Modeling of the Blast Furnace Ironmaking Process[J].JOM, 2016, 68(5):1353-1362 [8]张仕洋,薛庆国,刘锦周,等.回旋区内喷吹煤粉燃烧行为的数值模拟[J].过程工程学报, 2014, (2):273-279 [9]Natsui S, Ueda S, Nogami H, et al.Analysis on Non-Uniform Gas Flow in Blast Furnace Based on DEM-CFD Combined Model[J].Steel Research International, 2011, 82(8):964-971 [10]肖永忠,梁南山,毕学工,等.涟钢 高炉风口供风特性研究[J].炼铁, 2006, 25(1):45-47 [11]梅亚光,程树森,李洋龙,等.高炉风口鼓风均匀性及风口参数调节研究[J].工业炉, 2016, 38(3):5-10 [12]李洋龙,程树森,陈川,等.高炉风口风量分配数学模型[J].东北大学学报:自然科学版, 2016, 37(3):357-362 [13]Oudenallen R G V, Verbraak P, Geerdes H A M, et al.Blast furnace circumferential process symmetry: effect of flow distribution in hot blast systems[J].Ironmaking & Steelmaking, 2011, 38(7):489-493 [14]吴狄峰,程树森,赵宏博,等.风口尺寸对高炉操作影响的研究[J].钢铁, 2008, 43(4):18-23 [15]Helle M, Saxén H.Simulation of tuyere–raceway system in blast furnace[J].Ironmaking & Steelmaking, 2006, 33(5):407-412