太阳能高温共电解制合成气高效还原炼铁系统研究  

Study on Efficient Ironmaking System Using Syngas From High Temperature Co-Electrolysis of Solar Energy

作　　者：林子涵 纪辰 夏起 马可韦 陈晨[1] LIN Zihan;JI Chen;XIA Qi;MA Kewei;CHEN Chen(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310032,China)

机构地区：[1]浙江工业大学机械工程学院,杭州310012

出　　处：《工程热物理学报》2024年第12期3634-3640,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金面上项目(No.52176208);浙江省属高校基本科研业务费专项资金资助(No.RF-B2023005)。

摘　　要：本文提出了太阳能全光谱利用耦合SOEC共电解制合成气还原炼铁系统。在该系统中,采用复合抛物面碟实现全光谱利用,通过光伏光热耦合腔体SOEC实现热电互补,以实现高效还原炼铁。构建了SOEC电化学模型,并通过比较分析模型预测的极化电压与实验数据来验证所提出的模型。此外,耦合SOEC模型与其他子系统热力学模型并构建了完整系统模型。基于所提出的系统模型,利用参数化分析研究了关键工况参数对系统性能的影响规律。在输入太阳能1100 W/m^(2)、SOEC温度775℃、电流密度1000 A/m^(2)条件下降低炼铁能耗至24.54 kJ/g,为进一步优化太阳能制合成气还原炼铁系统设计提供参考.In this paper,a full-spectrum solar energy utilization ironmaking system with SOEC co-electrolysis for syngas is proposed.In this system,a compound parabolic dish is used to achieve full-spectrum utilization.Photovoltaic and solar thermal techniques are coupled with the dish to supply both electricity and heat for eficient syngas production from cavity SOEC,which improves the efficiency of the ironmaking system.An SOEC electrochemical model is developed and vali-dated by comparing and analyzing the predicted voltage with the experimental data.In addition,a thermodynamic model to simulate the entire system is also developed by coupling the SOEC model with thermodynamic models for other necessary processes.Based on the proposed system model,parametric analyses are conducted to investigate the effects of operating condition parameters on the system performance.The energy consumption of ironmaking is reduced to 24.54 kJ/g under the conditions of 1100 W/m^(2)solar energy input,775℃ SOEC temperature and 1000 A/m^(2)current density,which provides a reference for further optimizing the design of the solar-to-syngas reduction ironmaking system.

关 键 词：太阳能 SOEC 合成气 炼铁 

分 类 号：TK121[动力工程及工程热物理—工程热物理]