富氢甲烷直接火焰冲击加热带钢传热特性的数值模拟  

Numerical Simulation of Heat Transfer Characteristics of Strip Steel Heated by Direct Flame Impingement of Hydrogen-Rich Methane

作　　者：严晓峰 仇天忠 岳云辉 梁嘉瑞 王通 胡贤忠 YAN Xiaofeng;QIU Tianzhong;YUE Yunhui;LIANG Jiarui;WANG Tong;HU Xianzhong(CITIC Pacific Special Steel Group Co.,Ltd.,Wuxi Jiangsu 214422,China;CETC Yangzhou Baojun Electronics Co.,Ltd.,Yangzhou Jiangsu 225002,China;Shenyang NEU‐SANKEN Industrial Furnace MFG.Co.,Ltd.,Shenyang Liaoning 110819,China;College of Metallurgy,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]中信泰富特钢集团股份有限公司,江苏无锡214422 [2]中电科技扬州宝军电子有限公司,江苏扬州225002 [3]沈阳东大三建工业炉制造有限公司,辽宁沈阳110819 [4]东北大学冶金学院,辽宁沈阳110819

出　　处：《辽宁石油化工大学学报》2024年第4期10-17,共8页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金项目(51706037);辽宁省自然科学基金项目(2023-ISBA-100)。

摘　　要：直接火焰冲击加热技术广泛应用于钢铁热处理领域,该技术目前主要用天然气作为燃料。氢气为清洁能源,具有较高的层流火焰传播速度,其与天然气结合会改善燃料燃烧速度并减少碳氧化物及氮氧化物的排放。使用Fluent建立直接火焰冲击加热钢板的数值模型,对不同掺氢量、雷诺数及无因次距离条件下直接火焰冲击加热带钢的传热特性进行了研究。结果表明,当掺氢量从0增加到25%时,被加热10 s的靶件钢板驻点温度由385.36 K下降到374.31 K,钢板驻点处的热流密度由154828 W/m~2下降到137926 W/m~2;当雷诺数从13400增加到33600时,钢板驻点温度由347.04 K上升到450.90 K,压力从14.93 Pa上升到136.53 Pa,但钢板的温度和压力的均匀性逐渐变差;当无因次距离从25增加到45时,钢板驻点温度由442.42 K下降到344.36 K,压力由106.00 Pa下降到24.81 Pa,且分布更加不均匀。Direct flame impingement heating technology is widely used in the field of steel heat treatment processes and is currently fueled by natural gas.Hydrogen,as a clean energy source and its high laminar flame propagation speed,combined with natural gas will improve the fuel combustion speed and reduce the emission of carbon oxides and nitrogen oxides.In this paper,a numerical model of direct flame impingement heating of steel plate was established using Fluent,and the heat transfer characteristics of direct flame impingement heating of steel strip were investigated under different hydrogen doping,Reynolds number,and factorless distance conditions.The results show that the temperature and heat flow density of the steel plate of the heated target decrease with the increase of hydrogen doping from 0 to 25%at a heating time of 10 s.The temperature of the steel plate stationary point decreases from 385.36 K to 374.31 K,and the heat flow density of the steel plate stationary point decreases from 154828 W/m2 to 137926 W/m2.With the increase of Reynolds number from 13400 to 33600,the steel plate stationary temperature increased from 347.04 K to 450.90 K,the pressure increased from 14.93 Pa to 136.53 Pa,but the uniformity of the temperature and pressure of the steel plate deteriorated gradually.The increase of the causeless distance from 25 to 45 made the temperature of the steel plate stationary point decreased from 442.42 K to 344.36 K,and the pressure was reduced from 106.00 Pa to 24.81 Pa and the distribution was more inhomogeneous.

关 键 词：直接火焰冲击 甲烷掺氢 数值模拟 带钢 

分 类 号：TG161[金属学及工艺—热处理]