新型外燃旋流热风炉内流动与传热过程数值计算  

Numerical Calculation of Flow and Heat Transfer in an Outer-Combustion Swirl- Flowing Hot Blast Stove

作　　者：张书臣[1] 郭鸿志[1] 刘向军[1] 程小虎[1] 蔡漳平[2] 赵树治[2] 程克友[3] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]济钢集团公司技术中心,济南250000 [3]济钢集团公司第一炼铁厂,济南250000

出　　处：《北京科技大学学报》2004年第1期34-37,共4页Journal of University of Science and Technology Beijing

摘　　要：阐明中小型高炉的风温由1000℃左右提高到1250-1300℃的主要措施是将煤气与空气双预热;提出应用高速烧嘴和新型外燃旋流热风炉来预热助燃空气,烧单一煤气可以实现高炉1250～1300℃高风温.对炉内流动与传热过程进行的数值计算结果表明,在蓄热球床表面没有偏流,气流及温度分布均匀.在中试炉上测量的烟气温度分布与计算结果基本吻合.It is clarified that the important method to improve the blast temperature from 1000 ℃ to 1 250-1 300℃ is to preheat both auxiliary air and coal gas. The blast furnace temperature can be reached to 1250-1 300℃ by burning single blast stove gas if using high speed burners and a type of external-combustion swirl-flowing hot blast stove to preheat auxiliary combustion air. The calculating results, similar to those determinating experimental data in a middle experiment hot blast stove, proved that there is no eccentric flow in the face of the store energy balls and the flow and temperature fields even.

关 键 词：外燃旋流热风炉 速度场 温度场 数值计算 传热过程 高炉风温 

分 类 号：TF544[冶金工程—钢铁冶金]