转炉顶吹气体射流的冲击特性
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摘要
利用Fluent软件研究了转炉炼钢不同枪位条件下的顶吹气体射流特性,并与理论计算结果对比分析。发现单孔氧枪数值模拟的冲击深度小于理论计算值、冲击面积大于理论计算值,且随着枪位的提高,冲击深度差值变小,冲击面积差值变大。在此基础上,研究了100t转炉采用4孔超音速氧枪的射流冲击特性,发现当枪位为1.0m时,冲击深度为0.21m,冲击面积仅为1.328m2,与计算值相差较大;当枪位提高至1.5m时,冲击深度模拟结果为0.12m,计算值为0.83m,冲击面积模拟结果和计算值相差增大。
The impact characteristics of the top-blown gas jet were simulated by Fluent and compared with theoretical calculation results.The comparison results showed that the impact depth of the single-hole oxygen lance was less than the calculated value,and the impact area was bigger than the calculated value.With the increasing of the lance height,the difference of the impact depth decreased and the difference of the impact area increased.On this basis,the impact characteristics of the four-hole supersonic oxygen lance in 100 tconverter were studied.The impact depth was 0.21 mand the impact area was only 1.328 m2 at the lance height of 1.0 m,which had relatively large differences from the calculated values.When the lance height raised to 1.5 m,the simulation impact depth was0.12 m,while the calculated value was 0.83 m.The difference of the impact area between the simulation result and the calculated value became greater.
The impact characteristics of the top-blown gas jet were simulated by Fluent and compared with theoretical calculation results.The comparison results showed that the impact depth of the single-hole oxygen lance was less than the calculated value,and the impact area was bigger than the calculated value.With the increasing of the lance height,the difference of the impact depth decreased and the difference of the impact area increased.On this basis,the impact characteristics of the four-hole supersonic oxygen lance in 100 tconverter were studied.The impact depth was 0.21 mand the impact area was only 1.328 m2 at the lance height of 1.0 m,which had relatively large differences from the calculated values.When the lance height raised to 1.5 m,the simulation impact depth was0.12 m,while the calculated value was 0.83 m.The difference of the impact area between the simulation result and the calculated value became greater.
引文
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[17]陈绍春,朱荣,杨竹芳,等.转炉集束射流氧枪的射流特性研究[J].福州大学学报:自然科学版,2010,38(5):711.(CHEN Shao-chun,ZHU Rong,YANG Zhu-fang,Study of characteristic of coherent jet oxygen lance for BOF[J].Journal of Fuzhou University:Natural Science,2010,38(5):711.)
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[19] Sambasivam R,Lenka S N,Durst F,et al.A new lance design for BOF steelmaking[J].Metallurgical and Materials Transactions B,2007,38(1):45.
[20]汪成义,杨利彬,李相臣,等.两种氧枪喷头射流行为的数值模拟[J].中国冶金,2016,26(9):53.(WANG Cheng-yi,YANG Li-bin,LI Xiang-chen,et al.Numerical simulation on jet behaviors of two different oxygen lance nozzles[J].China Metallurgy,2016,26(9):53.)
[21]杨岩,朱荣.环氧温度对超音速主射流特性的影响[J].中国冶金,2016,26(9):38.(YANG Yan,ZHU Rong.Effect of shrouding oxygen temperature on characteristics of supersonic oxygen jet[J].China Metallurgy,2016,26(9):38.)
[22]赵冲,陈威,张立峰.转炉顶吹过程多相流数值模拟[J].中国冶金,2018,28(s1):1.(ZHAO Chong,CHEN Wei,ZHANG Li-feng.Numerical simulation of multiphase flow in converter top blowing process[J].China Metallurgy,2018,28(s1):1.)
[23]袁章福,潘贻芳.炼钢氧枪技术[M].北京:冶金工业出版社,2007.(YUAN Zhang-fu,PAN Yi-fang.Oxygen Lance Technology of Steelmaking[M].Beijing:Metallurgical Industry Press,2007.)
[24]张彦恒.攀钢200t炼钢转炉氧枪设计与应用[J].炼钢,2018,34(3):1.(ZHANG Yan-heng.The design and application of 200 t BOF oxygen lance of Pangang[J].Steelmaking,2018,34(3):1.)
[25] LMing,ZHU Rong,GUO Ya-guang,et al.Simulation of flow fluid in the BOF steelmaking process[J].Metallurgical and MaterialsTransactions B,2013,44B(6):1560.
[2]李存牢,朱荣,王慧霞,等.转炉炼钢氧气射流技术[J].北京科技大学学报,2009,31(s1):32.(LI Cun-lao,ZHU Rong,WANG Hui-xia,et al.Oxygen jet technology in BOF[J].Journal of University of Science and Technology Beijing,2009,31(s1):32.)
[3]汪成义,杨利彬,曾加庆.大型转炉顶底复吹混合效果模拟[J].钢铁,2016,51(10):15.(WANG Cheng-yi,YANG Libin,ZENG Jia-qing.Simulation of mixing effect of top and bottom blowing in a large converter[J].Iron and Steel,2016,51(10):15.)
[4]盛援义,关玉龙,郑才翔.喷射冶金过程气液相接触面积的计算及实验测定[J].钢铁,1987,22(3):24.(SHENG Yuan-yi,GUAN Yu-long,ZHENG Cai-xiang.Calculation and measurement of gas-liquid interfacial area in the process of injection metallurgy[J].Iron and Steel,1987,22(3):24.)
[5]李存牢,朱荣,李三三.单孔炼钢氧枪冲击深度的数值模拟[J].冶金能源,2011,30(1):8.(LI Cun-lao,ZHU Rong,LI San-san.Numerical simulation of the impact depth of single whole oxygen lance for steelmaking[J].Energy for Metallurgical Industry,2011,30(1):8.)
[6] LIU Fu-hai,SUN Dong-bai,ZHU Rong,et al.Effect of nozzle twisted oxygen lance on flow field and dephosphorisation rate in converter steelmaking process[J].Ironmaking and Steelmaking,2016,44(9):1.
[7]李姣,于会香,王新华,等.转炉底吹枪优化布置的数值模拟[J].钢铁,2018,53(2):32.(LI Jiao,YU Hui-xiang,WANG Xin-hua,et al.Optimization of arrangement of bottom tuyeres through numerical simulation[J].Iron and Steel,2018,53(2):32.)
[8] HE Chun-lai,YANG Ning-chuan,HUANG Qi-ming,et al.A multi-phase numerical simulation of a four-nozzle oxygen lance top-blown convertor[J].Procedia Earth and Planetary Science,2011,2(1):64.
[9]董凯,朱荣,何春来,等.氧气顶吹转炉的三相流数值模拟[J].过程工程学报,2011,11(1):20.(DONG Kai,ZHU Rong,HE Chun-lai,et al.Numerical simulation of threephase flow in an oxygen top-blown convertor[J].The Chinese Journal of Process Engineering,2011,11(1):20.)
[10]徐栋,苍大强,秦丽雪.氧气顶吹转炉三维流场数值模拟[J].炼钢,2011,27(4):41.(XU Dong,CANG Daqiang, QINLi-xue. Numericalsimulationofthree dimensional fluid flow of basic oxygen furnace[J].Steelmaking,2011,27(4):41.)
[11]刘广龙,冯亮花,梁慧坤,等.基于解析法的氧枪喷管设计及模拟[J].中国冶金,2016,26(1):59.(LIU Guang-long,FENG Liang-hua,LIANG Hui-kun,et al.Design and simulation of oxygen lance nozzle basedon the analytical method[J].China Metallurgy,2016,26(1):59.)
[12]马浩冉,朱荣,姚柳洁,等.六孔氧枪喷射对转炉流体流动影响的数值模拟研究[J].工业加热,2018,47(4):42.(MA Hao-ran,ZHU Rong,YAO Liu-jie,et al.Numerical simulation of influence of six hole oxygen injection on fluid flow in converter[J].Industrial Heating,2018,47(4):42.)
[13]娄文涛,李勇,朱苗勇.顶底复吹转炉内气液两相流行为的数值模拟[J].过程工程学报,2011,11(6):926.(LOU Wen-tao,LI Yong,ZHU Miao-yong.Numerical simulation of gas liquid two-phase flow behavior in the top and bottom combined blowing converter[J].The Chinese Journal of Process Engineering,2011,11(6):926.)
[14]杨文远,王丽丽,肖尊湖,等.转炉炼钢氧气压力的选择[J].钢铁,2014,49(11):36.(YANG Wen-yuan,WANG Li-li,XIAO Zun-hu,et al.Oxygen pressure selection in BOF[J].Iron and Steel,2014,49(11):36.)
[15]杨文远,张先贵,吕英华,等.转炉供氧参数对喷溅的影响[J].钢铁,2012,47(11):32.(YANG Wen-yuan,ZHANG Xian-gui,LYing-hua,et al.Effects of oxygen supply on splashing of BOF[J].Iron and Steel,2012,47(11):32.)
[16]杨文远,吕英华,胡砚斌,等.氧射流对熔池穿透深度的研究[J].中国冶金,2013,23(11):21.(YANG Wen-yuan,LYing-hua,HU Yan-bin,et al.Effect of oxygen jet on penetration depth of the bath[J].China Metallurgy,2013,23(11):21.)
[17]陈绍春,朱荣,杨竹芳,等.转炉集束射流氧枪的射流特性研究[J].福州大学学报:自然科学版,2010,38(5):711.(CHEN Shao-chun,ZHU Rong,YANG Zhu-fang,Study of characteristic of coherent jet oxygen lance for BOF[J].Journal of Fuzhou University:Natural Science,2010,38(5):711.)
[18] Li M M,Li Q,Kuang S B,et al.Coalescence characteristics of supersonic jets from multi-nozzle oxygen lance in steelmaking BOF[J].Steel Research International,2015,86(12):1517.
[19] Sambasivam R,Lenka S N,Durst F,et al.A new lance design for BOF steelmaking[J].Metallurgical and Materials Transactions B,2007,38(1):45.
[20]汪成义,杨利彬,李相臣,等.两种氧枪喷头射流行为的数值模拟[J].中国冶金,2016,26(9):53.(WANG Cheng-yi,YANG Li-bin,LI Xiang-chen,et al.Numerical simulation on jet behaviors of two different oxygen lance nozzles[J].China Metallurgy,2016,26(9):53.)
[21]杨岩,朱荣.环氧温度对超音速主射流特性的影响[J].中国冶金,2016,26(9):38.(YANG Yan,ZHU Rong.Effect of shrouding oxygen temperature on characteristics of supersonic oxygen jet[J].China Metallurgy,2016,26(9):38.)
[22]赵冲,陈威,张立峰.转炉顶吹过程多相流数值模拟[J].中国冶金,2018,28(s1):1.(ZHAO Chong,CHEN Wei,ZHANG Li-feng.Numerical simulation of multiphase flow in converter top blowing process[J].China Metallurgy,2018,28(s1):1.)
[23]袁章福,潘贻芳.炼钢氧枪技术[M].北京:冶金工业出版社,2007.(YUAN Zhang-fu,PAN Yi-fang.Oxygen Lance Technology of Steelmaking[M].Beijing:Metallurgical Industry Press,2007.)
[24]张彦恒.攀钢200t炼钢转炉氧枪设计与应用[J].炼钢,2018,34(3):1.(ZHANG Yan-heng.The design and application of 200 t BOF oxygen lance of Pangang[J].Steelmaking,2018,34(3):1.)
[25] LMing,ZHU Rong,GUO Ya-guang,et al.Simulation of flow fluid in the BOF steelmaking process[J].Metallurgical and MaterialsTransactions B,2013,44B(6):1560.