Effect of Coal Contaminants on Solid Oxide Fuel System Performance and Service Life
Effect of Coal Contaminants on Solid Oxide Fuel System Performance and Service Life
复制标题
煤污染物对固体氧化物燃料系统性能和使用寿命的影响
DOI：
10.2172/957507
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Gupta
中科院分区：
文献类型：
--
作者：
G. Krishnan;P. Jayaweera;J. Bao;J. Pérez;K. Lau;M. Hornbostel;A. Sanjurjo;J. Albritton;R. Gupta
美国能源部的SECA计划设想开发高效率、低排放、CO{sub 2}封存就绪和燃料灵活的技术，以利用化石燃料发电。其中一种技术是集成气化固体氧化物燃料电池（SOFC），它从煤气化炉的气流中产生电力。SOFC具有高的燃料-电力转换效率、环境相容性（低NO{sub x}产生）和模块化。天然存在的煤具有许多杂质，并且这些杂质中的一些以蒸气或以细颗粒物质的形式终止于燃料气体流中。建立SOFC对煤衍生气体中污染物的耐受极限将允许燃料进料系统的适当设计，其不会灾难性地损坏SOFC或允许长期累积降解。镍金属陶瓷基固体氧化物燃料电池的阳极在煤衍生燃料气体流中预期存在的污染物的存在下容易降解。虽然已经研究了一些污染物如H{sub 2}S、NH{sub 3}和HCl的影响，但尚未确定其他污染物如As、P和Hg的影响。本研究的主要目的是确定固体氧化物燃料电池的性能对700至900 ℃温度范围内煤衍生气流中存在的痕量污染物的敏感性。结果被用来评估灾难性的损害风险和长期累积影响的痕量污染物的SOFC系统的预期寿命与煤衍生的气体流进料。«少
The U.S. Department of Energy's SECA program envisions the development of high-efficiency, low-emission, CO{sub 2} sequestration-ready, and fuel-flexible technology to produce electricity from fossil fuels. One such technology is the integrated gasification-solid oxide fuel cell (SOFC) that produces electricity from the gas stream of a coal gasifier. SOFCs have high fuel-to-electricity conversion efficiency, environmental compatibility (low NO{sub x} production), and modularity. Naturally occurring coal has many impurities and some of these impurities end in the fuel gas stream either as a vapor or in the form of fine particulate matter. Establishing the tolerance limits of SOFCs for contaminants in the coal-derived gas will allow proper design of the fuel feed system that will not catastrophically damage the SOFC or allow long-term cumulative degradation. The anodes of Ni-cermet-based SOFCs are vulnerable to degradation in the presence of contaminants that are expected to be present in a coal-derived fuel gas stream. Whereas the effects of some contaminants such as H{sub 2}S, NH{sub 3} and HCl have been studied, the effects of other contaminants such as As, P, and Hg have not been ascertained. The primary objective of this study was to determine the sensitivity of the performance of solid oxide fuel cellsmore » to trace level contaminants present in a coal-derived gas stream in the temperature range 700 to 900 C. The results were used to assess catastrophic damage risk and long-term cumulative effects of the trace contaminants on the lifetime expectancy of SOFC systems fed with coal-derived gas streams.« less