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过程工程学报 ›› 2017, Vol. 17 ›› Issue (6): 1148-1155.DOI: 10.12034/j.issn.1009-606X.217149

• 流动与传递 • 上一篇    下一篇

高炉双热风总管结构的风口风量分布模拟

刘文鹏， 金 焱*， 董晓森   

  1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室，湖北 武汉 430081
  • 收稿日期:2017-02-28 修回日期:2017-04-01 出版日期:2017-12-20 发布日期:2017-12-05
  • 通讯作者: 金焱 461956193@qq.com

Simulation on Blast Volume Distribution of Blast Furnace Tuyeres with Double Hot Blast Main Structure

Wenpeng LIU,  Yan JIN *,  Xiaosen DONG   

  1. Key Lab for Ferrous Metallurgy and Resources Utilization, Ministry of Education, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
  • Received:2017-02-28 Revised:2017-04-01 Online:2017-12-20 Published:2017-12-05

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摘要： 根据高炉冶炼的需要，通过采用不同直径的风口或堵塞某个风口，直接改变高炉风口风量分布情况，改善冶炼环境. 采用数值模拟方法对某厂双热风总管结构送风系统3200 m3高炉进行风口风量分配，通过建立送风系统流场的流体动力学模型，模拟高炉各风口风量分布. 结果表明，堵塞单、双风口会增大风口风量分布的不均匀性但影响较小，当堵塞入口两侧的2个对称风口时，各风口的风量变化幅度减小，不均匀性仅为4.02%，比未堵塞风口时减小近10%；单一风口直径缩小10 mm，各风口风量分布规律基本不变，仅对被缩减风口及距入口最远端风口影响明显，不均匀性显著增加，缩小距入口最远的1个风口的直径时，风量变化幅度最大，为21.57%，约为正常情况的4倍.

关键词: 高炉, 热风系统, 风口, 风量分配, 数值模拟

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.

Key words: blast furnace, hot-blast system, tuyere, blast volume distribution, numerical simulation