煤气组分对固体氧化物燃料电池碳沉积的影响

doi:10.3724/SP.J.1077.2011.01129

无机材料学报 ›› 2011, Vol. 26 ›› Issue (11): 1129-1135.DOI: 10.3724/SP.J.1077.2011.01129

煤气组分对固体氧化物燃料电池碳沉积的影响

于建国, 王玉璋, 翁史烈

(上海交通大学机械与动力工程学院, 动力机械与工程教育部重点实验室, 上海 200240)

收稿日期:2010-12-14 修回日期:2011-02-24 出版日期:2011-11-20 网络出版日期:2011-11-11
作者简介:于建国(1983-), 男, 博士研究生. E-mail: ferret@sjtu.edu.cn
基金资助:
教育部留学回国人员科研启动基金; 上海交通大学研究生创新能力培养专项基金; 上海市科委科技攻关计划(08DZ1200102); 国家重点基础研究发展规划项目(973计划)(2007CB210102)

Effects of Syngas Components on the Carbon Formation in Planar Solid Oxide Fuel Cell

YU Jian-Guo, WANG Yu-Zhang, WENG Shi-Lie

(School of Mechanical Engineering, Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China)

Received:2010-12-14 Revised:2011-02-24 Published:2011-11-20 Online:2011-11-11
Supported by:
Scientific Research Foundation for Returned Scholars, Ministry of Education of China; Shanghai Jiao Tong University Innovation Fund For Postgraduates; Key Technologies R&D Program of Shanghai (08DZ1200102); The Major State Basic Research Development Program of China (973 Program) (2007CB210102)

摘要/Abstract

摘要： 以煤气化合成气作为固体氧化物燃料电池的燃料是煤炭清洁利用的重要方式之一, 但是存在碳沉积会对SOFC的运行造成一定影响. 本文构建了基于实验的全三维SOFC数学模型, 考虑了化学/电化学反应、气体的流动和扩散、气固耦合换热、过电势等多种运行参数, 计算了煤气化合成气中不同组分对以Ni-YSZ为阳极的SOFC碳沉积的影响. 可以看出, 增加水蒸气以及二氧化碳有助于碳沉积的降低, 但是过多的水蒸气和二氧化碳也会导致SOFC输出电压的降低. 较高的氢气含量对碳沉积也有一定的抑制作用. 一氧化碳含量的增加有助于减少碳沉积的范围, 但在SOFC入口处却增加了碳沉积活性. 同时, 甲烷能导致剧烈的碳沉积, 因此, 在煤气化合成气中应尽量去除甲烷.

关键词: 固体氧化物燃料电池, 燃料组分, 碳沉积, 煤气化合成气

Abstract: The utilization of syngas as the fuel of solid oxide fuel cell (SOFC) is one of the main ways to use the coal efficiently and cleanly. However, the possibility of carbon formation in Ni/YSZ anode may reduce the performance of SOFC. According to the fully three-dimensional models of chemical/electrochemical, heat/mass transfer and overpotential, the effects of fuel components on the performance and carbon formation of SOFC were obtained. The results shows that the increments of water steam and carbon dioxide may inhibit the carbon formation activity. However, the massive water steam and carbon dioxide will reduce the output voltage of SOFC as well. The high molar fraction of hydrogen in syngas also reduces the carbon formation activity. The addition of carbon monoxide may narrow down the region of carbon formation, but enhance the carbon formation activity near the fuel inlet of SOFC. Moreover, the existence of methane results in the sharply carbon formation, thus, the methane should be removed as clear as possibly in syngas.

Key words: solid oxide fuel cell, fuel components, carbon formation, syngas

中图分类号:

TM 911

于建国, 王玉璋, 翁史烈. 煤气组分对固体氧化物燃料电池碳沉积的影响[J]. 无机材料学报, 2011, 26(11): 1129-1135.

YU Jian-Guo, WANG Yu-Zhang, WENG Shi-Lie. Effects of Syngas Components on the Carbon Formation in Planar Solid Oxide Fuel Cell[J]. Journal of Inorganic Materials, 2011, 26(11): 1129-1135.

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煤气组分对固体氧化物燃料电池碳沉积的影响

Effects of Syngas Components on the Carbon Formation in Planar Solid Oxide Fuel Cell

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