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FBC中含S和CI煤燃烧下的碳钢退化研究
Degradation of a carbon steel in a fbc system firing coals contalning sulfur and chloring
查看参考文献11篇
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文摘
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在实验室规模的流化床(FBC)中分别燃烧低S(0.97mass％)与低Cl(0.026mass96)，甲S(1.68mass％与高C1(0.42mass％)，高S(4.48 mass96)与高Cl(0.41 mass％)三种煤各1000小时后，对放置于接近沸腾床位置的A210-C碳钢管的退化情况进行了研究．结果表明，(1)碳钢退化明显受温度影响，随表面温度的升高显著加快;(2)碳钢退化明显受飞行粒子带来的冲蚀影响；(3)燃烧低S低Cl煤对碳钢的耗损影响最小，而燃烧高S高Cl煤对碳钢耗损影响最大．同时根据对腐蚀产物的观测分析，对不同煤种燃烧产生的环境中碳钢的退化机制进行探讨． |
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其他语种文摘
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Degradation of A210 C carbon steel was investigated after 1000 h exposure under a laboratory-scale fluidized - bed combustor (FBC) firing three different coals respectively: low S (0. 97 mass%) and C (0.026 mass %) coal, low S (1.68 mass %) and high Cl (0.42 mass %) coal, and high S (4.48 mass %) and CI (0.41 mass%) coal.There were several observations:(1) Degradation is strongly temperature dependent, which significantly increases with increase of the surface temperature of the metal, (2) erosion induced by flying particles makes a great contribution to metal recession, (3) the environment by firing the low S and low Cl coal is the slightest aggressive, while the one firing the high S and high Cl coal is the most corrosive. Morphological evidences obtained in the work are helpful to interpret the effect of the coal - fired atmospheres on the recession of the carbon steel. |
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来源
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腐蚀科学与防护技术
,2003,15(3):125-129 【核心库】
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关键词
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流化床
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低碳钢
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腐蚀
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冲蚀
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地址
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1.
中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 沈阳, 110016
2.
Combustion Laboratory, Materials Characterization Center, Department of Chemistry, Western Kentucky University, Bowling Green, KY42101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1002-6495 |
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学科
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金属学与金属工艺 |
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基金
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中国科学院“百人计划”项目
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文献收藏号
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CSCD:1342238
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