IT-SOFC阳极表面催化反应机理与传递过程的数值模拟与分析

doi:10.3969/j.issn.0438-1157.2013.06.041

化工学报 ›› 2013, Vol. 64 ›› Issue (6): 2208-2218.DOI: 10.3969/j.issn.0438-1157.2013.06.041

IT-SOFC阳极表面催化反应机理与传递过程的数值模拟与分析

杨超¹, 杨国刚¹, 岳丹婷¹, 袁金良²

1. 大连海事大学轮机工程学院,辽宁大连 116026;
2. 瑞典隆德大学能源科学系,隆德22100,瑞典

收稿日期:2012-09-24 修回日期:2012-12-13 出版日期:2013-06-05 发布日期:2013-06-05
通讯作者: 杨超(1983—),男,博士研究生。
作者简介:杨超(1983—),男,博士研究生。
基金资助:
国家自然科学基金项目(50706004)。

CFD analysis for catalytic reactions and transport processes in anodes of IT-SOFC

YANG Chao¹, YANG Guogang¹, YUE Danting¹, YUAN Jinliang²

1. Marine Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China;
2. Department of Energy Science, Lund University, Lund 22100, Sweden

Received:2012-09-24 Revised:2012-12-13 Online:2013-06-05 Published:2013-06-05
Supported by:
supported by the National Natural Science Foundation of China(50706004).

摘要/Abstract

摘要： 固体氧化物燃料电池(SOFC)具有效率高、污染低、对燃料适应性好、功率大等特点。其性能与工作状态受发生在多孔阳极的化学反应与多种传递过程耦合的影响。基于流体力学方程组和多步基元化学反应模型,建立了描述上述耦合特性的三维数学模型,并自编程序求解分析。结果显示:重整反应主要发生在靠近通道进口的多孔阳极,表面成分Ni_s的覆盖率占70%～80%,其他主要表面成分为CO_s占20%～25%,H_s占6%,O_s占1.5%; Ni_s随工作温度升高而增加;加强吸附基元反应会提高燃料利用率和工作温度;渗透率增加会提高反应气体在多孔介质内的传递效果,但催化反应会因接触不充分而减弱。通过考虑基元反应机理研究表明,在微观层面,催化剂Ni利用率不高,催化反应受温度、化学反应速率常数、孔隙率等参数影响较大。

关键词: CFD分析, SOFC模型, 基元反应, 化学反应速率常数, 渗透率

Abstract: Solid oxide fuel cell (SOFC) is of advantages of high efficiency, low pollution,flexibility of usable fuel types and high power, etc.Its performance and work condition is strongly affected by electro-chemical reactions coupling with various kinds of transport processes occurring in the porous anode.In this work, a 3D model is developed to describe the coupling processes based on a in-house code program.A mechanism with 42-step elementary reactions was used to evaluate the catalytic surface reaction taking place in porous anode of SOFC.The results indicate that reforming reaction providing H₂ and CO for electrochemical reaction consumes heat produced by electrochemical reaction and occur mainly in near inlet side of anode.The 70% to 80% of surface coverage in anode is covered by Ni_s, 20% to 25% by CO_s, 6% by H_s and 1.5% by O_s, and it is also found that the low utilization of Ni_s catalytic surface means in sufficient usage of fuel.The coverage of surface species depends on operating temperature, Ni_s coverage increases with increasing temperature while H_s, CO_s and O_s decrease.Reaction rate constant can affect specific coverage and operation temperature in some degree, higher rate constant of elementary reaction can make increase fuel consumption and operation temperature.So,it is possible to go up the utilization rate of fuel by improving some steps in elementary reactions.Gas transport is improved by increasing permeability that can not enhance catalytic surface reaction.

Key words: CFD analysis, SOFC model, elementary surface reaction, reaction rate constant, permeability

中图分类号:

TM911.47

杨超, 杨国刚, 岳丹婷, 袁金良. IT-SOFC阳极表面催化反应机理与传递过程的数值模拟与分析[J]. 化工学报, 2013, 64(6): 2208-2218.

YANG Chao, YANG Guogang, YUE Danting, YUAN Jinliang. CFD analysis for catalytic reactions and transport processes in anodes of IT-SOFC[J]. CIESC Journal, 2013, 64(6): 2208-2218.

参考文献 24

[1]	Larminie J, Dicks A.Fuel Cell Systems Explained[M].2nd ed.England:JohnWiley & Sons Ltd., 2003:200-226
[2]	Li Chen, Shi Yixiang, Cai Ningsheng.Elementary reaction kinetic model of an anode-supported solid oxide fuel cell fueled with syngas[J].J.Power Sources, 2010,195:2266-2282
[3]	Cheng C H, Chang Y W, Hong C W.Multiscale parametric studies on the transport phenomenon of a solid oxide fuel cell.[J].J.Fuel Cell Sci.Technol., 2005,2:219-225
[4]	Pasaogullari U, Wang C Y.Computational fluid dynamics modeling of solid oxide fuel cells //Singhal S C, Dokiya M.Proceedings of SOFC-Ⅷ[C].2003:1403-1412
[5]	You Hongxin(由宏新), Ding Xinwei(丁信伟), Abuliti Abudula.Reactions of low and middle concentration dry methane on Ni-YSZ anode of SOFC[J].Journal of Chemical Industry and Engineering(China)(化工学报), 2006,57(3):620-625
[6]	Janardhanan Vinod M, Deutschmann Olaf.CFD analysis of a solid oxide fuel cell with internal reforming:coupled interactions of transport, heterogeneous catalysis and electrochemical processes[J].J.Power Sources, 2006,162:1192-1202
[7]	Hofmann P, Panopoulos K, Fryda L, et al.Comparison between two methane reforming models applied to a quasi-two-dimensional planar solid oxide fuel cell model[J].Energy, 2009,34:2151-2157
[8]	Hecht E, Gupta K, Zhu H, et al.Methane reforming kinetics within a Ni-YSZ SOFC anode support[J].Applied Catalysis A, 2005,295:40-51
[9]	Xie Huiqin(谢慧琴), Lin Hongwei(赁泓巍), Kang Xiaohong(康晓红), Li Lingchuan(李陵川), Lu Lizhu(卢立柱).Fabrication of yttria-stabilized zirconia(YSZ)film by electrochemical deposition[J].Journal of Chemical Industry and Engineering(China)(化工学报), 2001,52(5):451-455
[10]	Qiao Jinshuo(乔金硕), Sun Kening(孙克宁), Zhang Naiqing(张乃庆), Zhou Derui(周德瑞).Process of fuel reforming technology for SOFCs[J].Chemical Industry and Engineering Progress(化工进展), 2004,23(11):1189-1194
[11]	Yan Han(严涵), Zhu Xiufang(朱秀芳), Xu Dandan(徐丹丹), Tan Wenyi(谭文轶), Zhong Qin(钟秦).Stability experiments and thermodynamic analysis of Ni-SDC anode for solid oxide fuel cells[J].Chemical Industry and Engineering Progress(化工进展), 2012,31(3):607-611
[12]	Kang Yingwei, Li Jun,Cao Guangyi,Tu Hengyong,Li Jian,Yang Jie.One-dimensional dynamic modeling and simulation of a planar direct internal reforming solid oxide fuel cell[J].Chinese Journal of Chemical Engineering, 2009,17(2):304-317
[13]	Tan Xiaoyao, Meng Bo, Yang Naitao, Li K.Characteristic analysis of the solid oxide fuel cell with proton conducting ceramic electrolyte[J].Chinese Journal of Chemical Engineering, 2005,13(1):107-117
[14]	Yang Guogang(杨国刚), Lü Xinrong(吕欣荣), Yue Danting(岳丹婷), Yuan Jinliang(袁金良).Coupling mechanism of internal reforming and electrochemical reaction in SOFC[J].Journal of Chemical Industry and Engineering(China)(化工学报), 2008,59(4):1008-1015
[15]	Haberman B A, Young J B.Three-dimensional simulation of chemically reacting gas flows in the porous support structure of an integrated-planar solid oxide fuel cell[J].Int.J.Heat Mass Tranfer, 2004,47:3617-3629
[16]	Yakabe H, Hishinuma M,Uratani M, et al.Evaluation and modeling of performance of anode-supported solid oxide fuel cell[J].J.Power Sources, 2000,86:423-431
[17]	Mostinsky I L, Hewitt G F, Shires G L, Polezhaev Y V.Diffusion Coefficient in International Encyclopedia of Heat & Mass Transfer[M].Florida, USA:CRC Press, 1996
[18]	Aguiar A, Adjiman C S, Brandon N P.Anode-supported intermediate temperature direct internal reforming solid fuel cell(Ⅰ):Model-based steady-state performance[J].J.Power Sources, 2004,138:120-136
[19]	Wolfgang G Bessler, Jurgen Warnatz, David G Goodwin. The influence of equilibrium potential on the hydrogen oxidation kinetics of SOFC anodes[J].Solid State Ionics, 2007,177:3371-3383
[20]	Sundén B, Yuan Jinliang.Development of multi-scale models for transport processes involving catalytic reactions in SOFCs[J].Int.J.Micro-Nano Scale Transport, 2010,1(1):37-42
[21]	Kee R J, Coltrin M E, Blarborg P.Chemically Reacting Flow[M].Hoboken, NJ :John Wiley & Sons Inc.,2003
[22]	Yuan Jinliang, Huang Yuan, Sundén B, et al.CFD approach to analyze parameter effects on chemical-reacting transport phenomena in SOFC anodes[J].Heat and Mass Transfer, 2009,45:471-484
[23]	Ackmann T, Haart L,Lehnert W,et al.Modelling of mass and heat transport in thick-substrate thin-electrolyte layer SOFCs//Porc.4th European Solid Oxide Fuel Cell Forum 2000.Lucerne, Switzerland, 2000:431-438
[24]	Yuan Jinliang, Sunden B.Analysis of chemically reacting transport phenomena in an anode duct of intermediate temperature SOFCs[J].ASME J.Fuel Cell Sci. Tech. Engn.,2006,5(3):89-98

IT-SOFC阳极表面催化反应机理与传递过程的数值模拟与分析

CFD analysis for catalytic reactions and transport processes in anodes of IT-SOFC

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 24

相关文章 15

编辑推荐

Metrics

本文评价

[1]	贾晓宇, 杨剑, 王博, 林梅, 王秋旺. 金属丝网毛细特性的孔隙尺度数值分析[J]. 化工学报, 2023, 74(5): 1928-1938.
[2]	杨光, 程鑫, 王峥, 王晔, 张良俊, 吴静怡. 微纳多孔结构中稀薄气体流动渗透率的解析型预测模型[J]. 化工学报, 2022, 73(7): 2895-2901.
[3]	黄笑乐, 杨甫, 韩磊, 宁星, 李瑞宇, 董凌霄, 曹虎生, 邓磊, 车得福. 富油煤（长焰煤）孔隙结构三维表征及渗流模拟[J]. 化工学报, 2022, 73(11): 5078-5087.
[4]	黎方菊, 吴伟, 汪双凤. PEMFC带沟槽气体扩散层内传输特性孔隙网络模拟[J]. 化工学报, 2020, 71(5): 1976-1985.
[5]	徐荣, 程旭, 邓松, 戚律, 任秀秀, 张琪, 钟璟. 乙烯基桥联有机硅膜的羧基化改性及反渗透性能研究[J]. 化工学报, 2019, 70(7): 2766-2774.
[6]	周丰, 黄慧敏, 钱飞跃, 沈耀良, 周晓吉, 李欣, 夏雪. 碳纳米管负载层结构对复合膜分离性能的影响研究[J]. 化工学报, 2018, 69(5): 2318-2326.
[7]	李庭樑, 黄文博, 曹文炅, 蒋方明. EGS热储基于微震数据反演模化及其采热性能分析[J]. 化工学报, 2018, 69(12): 5001-5010.
[8]	宋赫, 董景明, 韩志涛, 陈旭立, 李策略, 潘新祥. 烧结参数对镍粉毛细芯性能的影响[J]. 化工学报, 2017, 68(S1): 178-183.
[9]	吴洪, 杨昊, 赵宇宁, 李震, 姜忠义. 磷酸化二氧化硅填充磺化聚醚醚酮质子交换膜的制备及表征[J]. 化工学报, 2016, 67(1): 358-367.
[10]	张雪飞, 王树博, 费哲君, 李薇薇, 赵阳, 谢晓峰, 齐士成, 吕亚非. 离子交换容量可控自交联型阴离子交换膜的制备[J]. CIESC Journal, 2015, 66(S1): 237-241.
[11]	赵俊峰, 黄汉雄. 水辅助注塑PP/EVOH共混物制品的相形态与阻渗性能[J]. 化工学报, 2015, 66(5): 1964-1969.
[12]	周博, 胥蕊娜, 姜培学. 致密破碎多孔介质渗透率测量方法[J]. 化工学报, 2014, 65(S1): 353-358.
[13]	吕明明, 王树众. 二氧化碳泡沫稳定性及聚合物对其泡沫性能的影响[J]. 化工学报, 2014, 65(6): 2219-2224.
[14]	朱卫兵, 王猛, 陈宏, 韩丁, 刘建文. 多孔介质内流体流动的格子Boltzmann模拟[J]. 化工学报, 2013, 64(S1): 33-40.
[15]	葛玉磊, 李树荣. 基于RBF神经网络的油藏相对渗透率曲线计算[J]. 化工学报, 2013, 64(12): 4571-4577.