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首页> 外文期刊>Energy & fuels >High-Temperature Corrosion of Refractory Materials in Biomass and Waste Combustion: Method Development and Tests with Alumina Refractory Exposed to a K2CO3-KCI Mixture
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High-Temperature Corrosion of Refractory Materials in Biomass and Waste Combustion: Method Development and Tests with Alumina Refractory Exposed to a K2CO3-KCI Mixture

机译：生物质和废物燃烧中耐火材料的高温腐蚀：暴露于K2CO3-KCI混合物中的氧化铝耐火材料的方法开发和测试

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摘要

When biomass and waste fuels are burned, alkalis and chlorine may form corrosive vapors and deposits, which can cause corrosion of boiler refractories. A laboratory method for studying refractory deterioration at temperatures and conditions relevant for biomass and waste fuel combustion was developed. Alumina refractory samples were exposed to a K2CO3-KC1 mixture at 800 and 1000 degrees C for 168 h. Different approaches to analyze alkali penetration into the refractory material were tested. The infiltration of potassium into the refractory was determined by horizontal and vertical line scan analyses and area analyses of the sample cross section using scanning electron microscopy with energy-dispersive X-ray analysis. A descriptive analysis of alkali infiltration mechanisms was obtained by applying Xphase spectral imaging software. Additionally, X-ray diffraction analyses of the cross section were made before and after exposure to detect new phases. The method gives detailed information on the alkali penetration and the mechanism behind it and can be used to estimate and compare the performance of refractories in various biomass and waste combustion conditions.
机译：燃烧生物质和废燃料时，碱和氯会形成腐蚀性蒸气和沉积物，这可能导致锅炉耐火材料腐蚀。开发了一种实验室方法，用于研究在与生物质和废燃料燃烧有关的温度和条件下的耐火材料劣化。氧化铝耐火样品在800和1000摄氏度的K2CO3-KC1混合物中暴露168小时。测试了分析碱渗入耐火材料的不同方法。钾在耐火材料中的渗透通过水平和垂直线扫描分析以及样品横截面的面积分析来确定，该分析是使用具有能量色散X射线分析的扫描电子显微镜进行的。通过使用Xphase光谱成像软件对碱的渗透机理进行了描述性分析。另外，在暴露之前和之后进行横截面的X射线衍射分析以检测新相。该方法提供了有关碱渗透及其背后机理的详细信息，可用于估算和比较各种生物质和废物燃烧条件下耐火材料的性能。

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  • 来源
    《Energy & fuels》 |2017年第9期|10046-10054|共9页
  • 作者

    Li Na; Vainio Emil; Hupa Leena; Hupa Mikko; Zabetta Edgardo Coda;

  • 作者单位

    Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Biskopsgatan 8, SF-20500 Turku, Finland;

    Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Biskopsgatan 8, SF-20500 Turku, Finland;

    Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Biskopsgatan 8, SF-20500 Turku, Finland;

    Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Biskopsgatan 8, SF-20500 Turku, Finland;

    Amec Foster Wheeler, Relanderinkatu 2, Varkaus 78201, Finland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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