摘要
维持合理的煤气流分布是高炉高效、低耗、稳定运行的关键。高炉气流分布不仅与原燃料质量、操作制度有关,还取决于炉型设计等先天因素,合理的炉型设计是获得合理气流分布的基础。基于传热学和流体力学基本原理,建立了高炉传热和煤气流流动数学模型,利用试验获得了模型的相关参数,通过数值模拟方法研究了炉腹角、炉身角以及等效炉腹角对高炉气流分布的影响。结果表明,减小炉腹角、增大炉身角有利于抑制边缘气流发展。调整等效炉腹角同样可以达到控制边缘气流的目的,但与改变炉腹角相比,其作用强度和作用范围更大,且最大影响区域也不相同。
Rational gas distribution is the primary factor for blast furnace to maintain the stable production with high efficiency and low consumption. The gas distribution is affected not only by the qualities of burden and operating rules,but the inner profile of blast furnace. As the innate factor,the rational inner profile design is the basis of acquiring the ideal gas distribution. Depending on the theories of heat transfer and hydromechanics,mathematics models of heat transfer and gas flow in blast furnace were established,and the critical parameters were obtained through experiments. Subsequently,the effect of bosh angle,shaft angle and equivalent bosh angle on the gas distribution were studied through numerical simulation method. The result indicates that decreasing bosh angle and increasing shaft angle are in favor of suppressing the edge flow. And adjusting the equivalent bosh angle can achieve the same destination as well,but which plays a role with higher intensity and wide range compared to the bosh angle adjustment,also with a different maximal affecting position to gas flow.
出处
《钢铁》
CAS
CSCD
北大核心
2018年第2期20-26,共7页
Iron and Steel
基金
国家重点研发计划资助项目(2016YFB0601304)
关键词
高炉
炉腹角
炉身角
等效炉腹角
气流分布
blast furnace
bosh angle
shaft angle
equivalent bosh angle
gas flow
