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Burning Resistance of Lignitic Coals Under Oxygen-Enriched Conditions

机译:富含氧化条件下褐煤煤的抗性

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摘要

Oxygen-enriched air combustion of low-grade fuels with high inorganic matter is of great interest due to the efficient burning of such fuels and mitigation of emissions. For this purpose, this study aims to investigate the combined effects of oxygen enrichment and temperature on burnout levels. The oxygen-enriched air combustion performance of two Turkish lignites with different geological ages (early Miocene-Pliocene period Kutahya-Tuncbilek (KT) lignite and Pleistocene period Adiyaman-Golbasi (AG) lignite) was investigated in a horizontal tube reactor. The lignite samples were heated slowly (10 °C/min) to the temperatures of 200-600 °C for AG lignite and 200-800 °C for KT lignite under N_2/O_2 atmospheres with O_2 ratios of 21, 30, 40, and 50 vol%. The solid residue remained after this oxidative heat treatment was characterized by proximate/ultimate analyses, higher heating value, (HHV) thermal analysis, Fourier transform infrared spectroscopy, (FTIR) X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques. It was concluded that AG lignite that is relatively younger lignite is more susceptible to the O_2-enriched conditions as the treatment temperature or O_2 concentration increases. It was also determined that the combined effects of temperature and O_2 concentration are much more profound than the individual effects of these parameters.
机译:由于这种燃料的有效燃烧和减轻排放,具有高无机物质的低级燃料的氧气氧气燃烧具有很大的兴趣。为此目的,本研究旨在探讨氧气富集和温度对烧坏水平的综合影响。在水平管反应器中研究了含有不同地质年龄的两种土耳其褐煤的氧气燃烧性能(早期的中共 - 全丙烯期Kutahya-Tuncbilek(Kt)褐煤和先生期褐煤)。将褐煤样品缓慢(10℃/ min)加热至200-600℃的温度,对于Ag Lignite,200-800℃用于Kt褐煤,在N_2 / O_2大气下,具有21,30,40的O_2比率和50体积%。在该氧化热处理后,固体残余物仍然是通过近似/最终分析,更高的加热值(HHV)热分析,傅里叶变换红外光谱,(FTIR)X射线衍射(XRD)和扫描电子显微镜(SEM)之后技巧。得出结论,褐煤相对较小的褐煤更容易受到富含O_2富含的条件,因为处理温度或O_2浓度增加。还确定了温度和O_2浓度的组合效果比这些参数的个体效果更加深入。

著录项

  • 来源
    《Journal of Energy Resources Technology》 |2020年第8期|082301.1-082301.9|共9页
  • 作者单位

    Department of Chemical Engineering Engineering Faculty Marmara University 34722 Kadikoy Istanbul Turkey;

    Department of Chemical Engineering Chemical and Metallurgical Engineering Faculty Istanbul Technical University 34469 Maslak Istanbul Turkey;

    Department of Chemical Engineering Chemical and Metallurgical Engineering Faculty Istanbul Technical University 34469 Maslak Istanbul Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oxygen-enriched air; burning; lignite; thermogravimetry; unburnt carbon; fuel combustion;

    机译:富氧空气;燃烧;褐煤;热重量法;未燃烧的碳;燃料燃烧;
  • 入库时间 2022-08-18 21:17:42

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