Numerical calculation of flow and heat transfer process in the new-type external combustion swirl-flowing hot stove

Shuchen Zhang, Hongzhi Guo, Xiangjun Liu, Zhangping Cai, Xiancheng Gao, and Sidong Xu1)Department of Thermal Engineering, University of Science and Technology Beijing, Beijing 100083, China2)Technology Center of Jinan Iron and Steel Group, Jinan Iron and Steel Group, Jinan 25010, China

摘 要：<正> It is clarified that the important method to improve the blast temperature of the small and the middle blast furnaces whose production is about two-thirds of total sum of China from 1000℃ to 1250-1300℃ is to preheat both their combustion-supporting air and coal gas. The air temperature of blast furnaces can be reached to 1250-1300℃ by burning single blast furnace coal gas if high speed burner is applied to blast furnaces and new-type external combustion swirl-flowing hot stove is used to preheat their combustion-supporting air. The computational results of the flow and heat transfer processions in the hot stove prove that the surface of the bed of the thermal storage balls there have not eccentric flow and the flow field and temperature field distribution is even. The computational results of the blast temperature distribution are similar to those determination experiment data. The numerical results also provide references for developing and designing the new-type external combustion swirl-flowing ho

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