高炉送风系统压力损失的理论解析  

Theoretical Analysis on Pressure Loss in Blast System of BF

作　　者：陈辉[1] 张卫东[2] 马泽军[1] 竺维春[1] 魏红旗[2] 甄昆泰 

机构地区：[1]首钢技术研究院钢铁研究所,北京100041 [2]首钢京唐钢铁公司炼铁部,河北唐山063200

出　　处：《钢铁》2011年第2期22-25,34,共5页Iron and Steel

摘　　要：以流体动力学为基础,建立了阻力损失计算模型,对送风系统的阻力损失进行了理论解析,并讨论了送风系统阻力损失对风口处风速和鼓风动能的影响。对国内5 000 m3级超大型高炉解析结果表明:送风系统阻力损失约占热风表压的11%左右;在风量相同的条件下,考虑送风系统阻力损失的风速和鼓风动能值较不计送风系统阻力损失时要高;为减少风口损坏,建议该5 000 m3级超大型高炉风速上限控制在280 m/s左右,鼓风动能上限控制在18 kW左右。Based on the fluid dynamics,the calculated model of pressure loss was developed for blast system of BF,and the pressure loss of blast system was analyzed theoretically.Furthermore,the effect of pressure loss in blast system on blast velocity and blast momentum in front of tuyere was discussed.According to the performance of 5 000 m3 superlarge blast furnace,firstly,the pressure loss of blast system is about 11% of the measured pressure at the end of hot blast main.Secondly,under the same air quantity,the blast velocity and blast momentum with considering the pressure loss of blast system are higher than those without the pressure loss of blast system.Finally,in order to reduce the tuyere losses,the upper limit of blast velocity should be controlled below 280 m/s,and the upper limit of blast momentum should be suggested below 18 kW.

关 键 词：高炉 风压 压力损失 风速 鼓风动能 

分 类 号：TF573[冶金工程—钢铁冶金]