转炉氧枪超音速射流特性的数值模拟研究  

Numerical Simulation Study on the Characteristics of Supersonic Jet of Converter Oxygen Lance

作　　者：唐逸兴 董凯[1,2] 姚柳洁 韩德文 魏光升 TANG Yixing;DONG Kai;YAO Liujie;HAN Dewen;WEI Guangsheng(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Special Melting and Preparation of High-end Metal Materials,Beijing 100083,China;Chengde Branch of Hegang Co.Ltd.,Chengde 067000,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]高端金属材料特种熔炼与制备北京市重点实验室,北京100083 [3]河钢股份有限公司承德分公司,河北承德067000

出　　处：《工业加热》2021年第3期33-36,39,共5页Industrial Heating

基　　金：中国博士后科学基金特别资助(站中)(2020T130053)。

摘　　要：运用Fluent模拟计算软件,并与工业实验相结合,对150 t提钒转炉用氧枪所产生的超音速氧气射流特性进行综合研究。通过对数值模拟与实验数据的分析,研究了马赫数、设计流量对氧枪射流长度、径向速度、动压分布及湍动能分布的影响,以此优选氧枪的设计参数,并将该优选氧枪应用于实际提钒转炉的冶炼过程中。工业实验结果表明:马赫数2.0,设计流量20000 m^(3)/h(标准)的氧枪,在实际生产过程中能有效改善转炉内渣钢的流动特性,提高枪头寿命,并将半钢平均冶炼时间缩短42 s。The characteristics of supersonic oxygen jet produced by oxygen lance for 150 t vanadium extraction converter are comprehensively studied by using fluent simulation software.During the experiment,the jet length,jet radial velocity and dynamic pressure distribution,jet turbulent kinetic energy distribution and other characteristics under different Mach number and design flow conditions were compared and analyzed to determine the optimal design parameters of oxygen lance,and the optimized oxygen lance was applied to the actual vanadium extraction converter smelting process.The industrial test results show that the oxygen lance with Mach number of 2.0 and design flow rate of 20000 Nm^(3)/h can effectively improve the flow characteristics of slag steel in converter and effectively prolong the service life of lance head,and shorten the average smelting time of semi steel by 42 s compared with the original lance head.

关 键 词：氧枪 数值模拟 超音速射流 

分 类 号：TF748.2[冶金工程—钢铁冶金]