Numerical investigation on the application of hydrogen plasma arc in electric arc furnace

IF 6.9 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-10-01 DOI:10.1016/j.applthermaleng.2025.128607

Hong-Chun Zhu , Zhuo-Wen Ni , Zhou-Hua Jiang , Teng Li , Hua-Bing Li , Zhi-Yu He , Jun-Hao Yuan , Bin Li , Ce Yang , Hong-Bin Lu

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Abstract

The incorporation of hydrogen energy into the EAF represents a promising approach to enhancing steelmaking efficiency and reducing carbon emissions. This study developed a plasma-molten pool coupling model to investigate the characteristics of hydrogen plasma arc and its influence on molten pool behavior. The results demonstrate that hydrogen plasma exhibits superior thermal and dynamic performance compared to conventional air plasma, with approximately 12.65 % higher peak temperature and 12.68 % greater maximum velocity. Notably, hydrogen plasma produces a molten pool cavity approximately 48.19 % deeper than air plasma, indicating significantly enhanced penetration capability. Flow pattern analysis reveals that hydrogen plasma generates distinctive vortex structures near the molten pool sidewall, contrasting with air plasma’s cavity-adjacent vortices. This altered flow pattern promotes more effective molten pool stirring and improves momentum and energy transfer efficiency. This research offers theoretical guidance for integrating hydrogen energy to enhance arc thermal efficiency and optimize smelting processes in short-process EAF steelmaking.

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氢等离子体电弧在电弧炉中应用的数值研究

将氢能纳入EAF是提高炼钢效率和减少碳排放的一种有希望的方法。本文建立了等离子体-熔池耦合模型，研究了氢等离子体电弧的特性及其对熔池行为的影响。结果表明，氢气等离子体的热动态性能比传统空气等离子体高12.65%，峰值温度和最大速度分别高12.68%。值得注意的是，氢等离子体产生的熔池腔深度约为空气等离子体的48.19%，表明穿透能力显著增强。流型分析表明，氢等离子体在熔池侧壁附近形成了独特的涡结构，与空气等离子体的腔内涡形成了鲜明的对比。这种改变的流动模式促进了更有效的熔池搅拌，提高了动量和能量传递效率。该研究为利用氢能提高电弧热效率、优化短流程电炉炼钢冶炼工艺提供了理论指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.