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过程工程学报 ›› 2015, Vol. 15 ›› Issue (4): 632-638.DOI: 10.12034/j.issn.1009-606X.215174

• 系统与集成 • 上一篇    下一篇

高炉内炉瘤位置分布对煤气流分布的影响机理

赵国磊 程树森 李超 赵军   

  1. 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院 河北钢铁集团唐钢分公司
  • 收稿日期:2015-03-30 修回日期:2015-05-04 出版日期:2015-08-20 发布日期:2015-08-20
  • 通讯作者: 赵国磊

Effect of Scaffolding Location Distribution in Blast Furnace on Gas Distribution

ZHAO Guo-lei CHENG Shu-sen LI Chao ZHAO Jun   

  1. School of Metallurgy and Ecology Engineering, University of Science and Technology Beijing School of Metallurgy and Ecology Engineering, University of Science and Technology Beijing School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing Tangsteel Company, Hebei Iron and Steel Group
  • Received:2015-03-30 Revised:2015-05-04 Online:2015-08-20 Published:2015-08-20
  • Contact: ZHAO Guo-lei

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摘要： 以实际3200 m3生产高炉为研究对象，建立了高炉内煤气流动与传热的二维稳态数学模型，设置中心距模型底面高度为8.4, 10, 12, 15 m的炉瘤，研究其对炉内煤气流动及煤气与炉料间传热的影响. 结果表明，炉瘤位置在一定范围内升高，炉内形成的软熔带顶部位置逐渐降低，根部位置升高，整体高度分别为9.85, 9.25, 8.36和6.92 m，导致焦窗层减少，软熔带透气性变差；径向距中心4 m的截线上炉内总压差依次为171, 174, 179和192 kPa；中心气流相对边缘逐渐减少，在距模型底面高度8 m的截线上中心与边缘的温差依次为742, 549, 429, 318 K.

关键词: 高炉, 炉瘤, 煤气, 流动, 传热, 数值模拟

Abstract: Taking a 3200 m3 actual blast furnace as research object, a two-dimensional steady mathematical model related with gas flow and heat transfer in blast furnace is established, and on the basis of configuration of scaffoldings with 4 different height locations, the distances from the center of scaffolding to model bottom are 8.4, 10, 12 and 15 m, respectively, the effects of scaffolding position distribution on gas flow and heat transfer between gas and burden are numerically examined. The results show that to some extent, with the increase of scaffolding height location, top height of the formed cohesive zone decreases, root height increases, and total height of cohesive zone decrease with 9.85, 9.25, 8.36 and 6.92 m respectively, leading to the decrease of coke slit layer number and deterioration of cohesive zone in permeability. Meanwhile, total pressure drop in blast furnace increases with 171, 174, 179 and 192 kPa in turn at the section line of radial distance 4 m. And the central gas proportion decreases compared with peripheral gas, while the temperature difference between central gas and peripheral gas decreases with 742, 549, 429 and 318 K in turn at the section line of height 8 m.

Key words: blast furnace, scaffolding, gas, flow, heat transfer, numerical simulation

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