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| Treatment and numerical simulation for cooling water pipe damage of blast furnace cooling stave |
| LI Jia1,2,3, CHEN Shuai1,2,3, LUO Shiyuan1,2,3, JIANG Jun1,2,3, ZHANG Zhengdong4, GUO Hongwei5 |
1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
3. Precision Manufacturing Institute, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
4. Wuhan Iron and Steel Company Limited, Wuhan 430080, Hubei, China;
5. Shagang School of Iron and Steel, Soochow University, Suzhou 215021, Jiangsu, China |
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Abstract In order to reduce the temperature of the blast furnace shell surface and enhance the utilization efficiency of the blast furnace cooling column,the situation of installing cooling columns when the different cooling water pipes on the blast furnace cooling stave were damaged was analyzed, and the arrangement of one of cooling columns was optimized. At the same time, a new method of plate-column combination was proposed to further reduce the temperature when the stave cooling water pipe were damaged. The numerical simulation results show that when the different cooling water pipes on the cooling stave are damaged, the surface temperature of the furnace shell with the cooling column is significantly lower than that without the cooling column. The cooling column arrangement obtained by genetic algorithm makes the maximum temperature for furnace shell surface of 60.9 ℃ and the average temperature of 48.1 ℃. Compared with the original arrangement in the factory, the maximum temperature of furnace shell surface is reduced by 6.8% and the average temperature is reduced by 4.1%. The maximum temperature at shell surface of the plate-column combination arrangement is 61.4 ℃, and the average temperature is 49.7 ℃. Compared with the original arrangement without cooling plates, the maximum temperature is reduced by 25.2% and the average temperature is reduced by 28.1%. The numerical simulation results can provide theoretical basis for the installation of cooling columns when the cooling water pipe of the cooling stave is damaged.
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Received: 31 January 2023
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2023, Vol. 33 
