电弧炉炼钢“CH4-N2”混合燃气集束射流行为及应用  

Study on the Behavior and Application of Coherent Jet with“CH4-N2”Mixed Gas in EAF Steelmaking

作　　者：魏光升 田博涵 王学义[3] 苏荣芳 WEI Guangsheng;TIAN Bohan;WANG Xueyi;SU Rongfang(Metallurgical and Eological Engineering School,University of Science and Technology Beijing,Beijing 100083,Chima;Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials,Beijing 100083,China;TPCO,Tianjin 300301,China;Beijing RongCheng JingYe Science and'Technology Limited Company,Beijing 100083,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]北京科技大学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]天津钢管集团股份有限公司,天津300301 [4]北京荣诚京冶科技有限公司,北京100083

出　　处：《工业加热》2020年第11期27-31,共5页Industrial Heating

基　　金：中国博士后科学基金面上资助项目(2019M660459);中国博士后科学基金特别资助(站中)(2020T130053);中央高校基本科研业务费资助项目(FRF-TP-19-031A1);国家自然科学基金项目(51734003)。

摘　　要：针对电弧炉炼钢"CH4-N2"混合燃气集束射流行为开展了数值模拟和射流检测实验研究,并将该技术应用于电弧炉炼钢生产。发现当燃气组成为75%甲烷+25%氮气和100%甲烷时,集束射流的射流行为和燃烧规律接近一致。在实际生产中,相较100%甲烷的燃气组成,采用75%甲烷+25%氮气的燃气可实现吨钢钢铁料消耗降低3 kg、天然气消耗减少0.86 m3(标准),同时对电弧炉冶炼终点钢液氮含量基本没有影响。Numerical simulation experiment and jet detection experiment were carried out to investigate the jet behavior of the coherent jet with"CH4-N2"mixed gas,which was also applied in a commercial electric arc furnace( EAF). It can be found that the jet behavior of the coherent jet with 75% CH4+ 25% Nwas accordance 100% CH4. In the industrial application,compared with the coherent jet with 100%CH4,the ferrous charges consumption and the natural gas consumption were reduced by 3 kg/t and 0. 86 Nm3/t with the application of the coherent jet with 75% CH4+ 25% N2. Meanwhile,there is no significant difference in the nitrogen content of final steel for these two modes of coherent jet.

关 键 词：电弧炉炼钢 集束射流 “CH4-N2”混合燃气 数值模拟 工业应用 

分 类 号：TF741.5[冶金工程—钢铁冶金]