板式固体氧化物燃料电池积碳特性实验  

Experimental study on carbon deposition characteristics of planar solid oxide fuel cell

作　　者：田辉 华栋[2,3] 曼茂立[1] 刘春哲 李国君 张兄文 TIAN Hui;HUA Dong;MAN Maoli;LIU Chunzhe;LI Guojun;ZHANG Xiongwen(Department of Mechanical Engineering,Hebei University of Technology Petroleum,Chengde 067000,Hebei,China;School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,Shannxi,China;Xi'an Modern Chemistry Research Institute,Xi'an 710065,Shannxi,China)

机构地区：[1]河北石油职业技术大学机械工程系,河北承德067000 [2]西安交通大学能源与动力工程学院,陕西西安710049 [3]西安近代化学研究所,陕西西安710065

出　　处：《储能科学与技术》2022年第5期1314-1321,共8页Energy Storage Science and Technology

基　　金：国家自然科学基金项目(51276145,51776172)。

摘　　要：固体氧化物燃料电池(SOFC)阳极积碳是制约其高效稳定运行的瓶颈问题,文中回顾了国内外学者在实验领域对SOFC积碳问题的研究进展,并指出研究积碳产生速率数学模型的意义。搭建了由气路管道,气体流量控制器,开启式真空气氛管式电加热炉等仪器设备组成的固体氧化物燃料电池积碳测试实验台;介绍了实验用片状阳极材料的制备,以及积碳实验的详细步骤。基于对镍/氧化钇稳定氧化锆(Ni/YSZ)金属陶瓷阳极上一氧化碳(CO)积碳特性的实验结果分析了:①一氧化碳/二氧化碳(CO/CO_(2))混合气体组分对CO歧化反应积碳特性影响;②温度对CO歧化反应积碳特性影响;③甲烷(CH_(4))裂解与CO歧化对积碳特性的影响。本文最后基于化学反应动力学,推导了不同温度下CO歧化反应积碳速率数学计算模型,并运用实验结果对其进行了验证。本文研究有助于探索SOFC积碳产生的机理,同时为以天然气为燃料的SOFC运行参数最优化控制提供了依据。The occurrence of carbon deposition on the anode of a solid oxide fuel cell(SOFC)is the bottleneck restricting its efficiency and stabilization.This paper reviews the research progress on the carbon deposition of SOFC in the experimental field both at home and abroad and points out the significance of determining a mathematical model of the carbon deposition rate.The SOFC carbon deposition experimental system is constructed composed of a gas pipeline,gas flow controller,open vacuum atmosphere,tubular electric heating furnace,and other instruments and equipment.The preparation of the sheet anode material for the experiment and the detailed steps of the carbon deposition experiment are introduced.We obtained the following based on the experimental results of the carbon deposition characteristics of the CO on Ni/YSZ anode:(1)the effect of CO/CO_(2)volume fraction on carbon deposition characteristics of CO disproportionation reaction;(2)effects of temperature on carbon deposition characteristics of CO disproportionation reaction;(3)effects of CH_(4)scission reaction and CO disproportionation on carbon deposition characteristics.Finally,based on the chemical reaction kinetics,the mathematical calculation model of the carbon deposition rate of CO disproportionation reaction at various temperatures is deduced and verified by the experimental results.This study is helpful to explore the mechanism of carbon deposition in an SOFC and provides a basis for the optimal control of SOFC operating parameters with natural gas as fuel.

关 键 词：固体氧化物燃料电池 阳极 积碳 实验研究 

分 类 号：TK152[动力工程及工程热物理—热能工程]