固体氧化物燃料电池直接内重整的模型研究进展  

Research progress of model simulation of direct internal reforming in solid oxide fuel cells

作　　者：孙航宇 李卓华 王亚丽 李晓艳 付云枫 杜国山[1] 陈宋璇[1] SUN Hangyu;LI Zhuohua;WANG Yali;LI Xiaoyan;FU Yunfeng;DU Guoshan;CHEN Songxuan(China ENFI Engineering Corporation(China Nonferrous Engineering and Research Institute),Beijing 100038,China;College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中国恩菲工程技术有限公司(中国有色工程有限公司),北京100038 [2]北京化工大学化学工程学院,北京100029

出　　处：《储能科学与技术》2024年第4期1277-1292,共16页Energy Storage Science and Technology

基　　金：博后自研项目(内部编号YZ2390)。

摘　　要：固体氧化物燃料电池(SOFCs)是一种通过电化学氧化反应直接将化学能高效率地转化为电能的装置,在大规模发电、联产以及一体化燃料升级等可再生能源系统领域具有广阔的市场前景。为进一步拓宽SOFCs的应用场景,降低运行成本,直接内重整(DIR)技术可将CH4等烷烃类物质在阳极催化生成H2,减少了燃料预处理要求且提高了转化效率,是目前SOFCs研究领域的热点之一。为了优化该技术的系统设计和操作条件,模型模拟的研究可显著减少实验工作量,并为其提供理论支撑和指导性建议。通过DIR-SOFC系统的模型模拟,结合场分布、动力学参数等,可以量化评估系统内的反应,从而了解其物理、化学过程的复杂性。本文总结了DIR-SOFC建模工作的现状,介绍了体积平均模型和针对微观结构的模型;重点讨论多尺度数学模型,对现有研究中的反应动力学过程描述、“能量-质量-动量”平衡方程、“1D-2D-3D”DIR-SOFC单元描述等进行了综述,能更好地评估变量对DIR的影响;对DIR-SOFC模型中不同液体燃料的重整反应及相关的反应动力学参数进行总结;指出现有模型的不足,并对DIR-SOFC系统模型的未来发展进行展望,使模型更加精准。Solid oxide fuel cells(SOFCs)efficiently convert chemical energy into electric energy via electrochemical oxidation reactions,holding promise for various engineering applications in large-scale power generation,cogeneration,and integrated fuel upgrading.Direct internal reforming(DIR)technology,catalyzing alkanes like CH4 at the anode to produce H2,enhances SOFC application scenarios and reduces operational costs,thereby reducing fuel pretreatment requirements and improving conversion efficiency,which represents a hotspot in SOFC research.Model simulation studies aid in optimizing system design and operational conditions,reducing experimental work,and providing theoretical data support and guidance suggestions.Through the model simulation of the DIR-SOFC system,combined with the field distribution and kinetic parameters,the system reactions can be quantitatively evaluated to understand the complexity of physical and chemical processes.This paper summarizes the current situation of DIR-SOFC modeling work,introducing volume average and microstructural models.It discusses the multiscale mathematical model and reviews the description of the reaction dynamics process"energy-mass-momentum"balance equations as well as the description of the"1 D-2 D-3 D"DIR-SOFC unit.This can be used to evaluate the variables on the DIR.Furthermore,it summarizes the reforming reactions of different liquid fuels in the DIR-SOFC model and the related reaction kinetic parameters.This study highlights existing model limitations and prospects for the future development of the DIR-SOFC system model to increase model accuracy.

关 键 词：固体氧化物燃料电池 直接内重整 模型模拟 甲烷重整模型 

分 类 号：T669.2[一般工业技术]