床颗粒层的形成和Ilmenite床颗粒的特征用于流化床燃烧的垃圾
Ali Valizadeh1, Thomas Karl Hannl2,3, Juraj Priščák2
1Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå SE-971 87, Sweden.
ACS omega
|June 30, 2025
概括
在流体化床中燃烧的垃圾会在伊尔梅尼特颗粒上形成一种保护性灰层. 这层含有丰富的Ca,P,Mg和K,可以防止床颗粒的铁损失,从而优化能量转化.
科学领域:
- * 材料科学 材料科学
- * 化学工程 化学工程
- * 生物质能源 生物质能源
背景情况:
- * 液化床燃烧 (FBC) 研究往往侧重于木质生物质,为富含的燃料留下知识空白.
- *伊尔梅尼特床颗粒在FBC中常用,但它们与垃圾等替代燃料的行为不太了解.
- * 垃圾是一种有前途的,富含的生物质燃料,用于发电.
研究的目的:
- * 为了研究在子 FBC期间在ilmenite上的床层颗粒层的形成和特征.
- *分析垃圾燃烧对伊尔梅尼特床颗粒性质的影响.
- * 了解灰沉积机制及其对材料完整性的影响.
主要方法:
- *在5千瓦的泡式液化床反应堆中燃烧子的液化床.
- *在4,8,12和16小时采集伊尔梅尼特床颗粒样本.
- *使用扫描电子显微镜与能量分散式X射线光谱学 (SEM/EDS) 分析床粒子样本.
主要成果:
- *最初由于燃料衍生的和床颗粒之间的反应而形成的内层,类似于木质生物质燃烧.
- * 一个由燃料衍生灰 (Ca,P,Mg,K) 组成的外层随着时间的推移均地覆盖了伊尔梅尼特表面.
- *这种均灰层的形成显著抑制了铁从伊尔梅尼特床颗粒的向外迁移.
结论:
- * 垃圾燃烧导致ilmenite上形成明显的床颗粒层.
- *灰层起到保护性屏障的作用,改变了伊尔梅尼特的表面特性,防止了铁的流失.
- *了解这些过程对于优化使用富含的生物质燃料的流化床能量转换至关重要.
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