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首页> 外文期刊>Fuel >Effect of volatile matter release on optical properties of macerals from different rank coals
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Effect of volatile matter release on optical properties of macerals from different rank coals

机译：挥发物释放对不同等级煤黄石光学性质的影响

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摘要

Ever since the recognition that macerals behave differently during the coking process, their thermal behaviour and its relationship with coke properties have become research topics of widespread interest. The present study is focused on the characterization of six bituminous coals of different rank from Upper Silesia (Poland) and their carbonized products obtained in a relatively high-capacity thermogravimeter under inert atmosphere and well-controlled heating conditions. A combined maceral-reflectance analysis was performed on samples carbonized at temperatures of 400,450,550,750 and 1000 ℃. Under such conditions, only coals with a reflectance of over 1.0% passed through a fluid stage as a result of which the coal particles lost their integrity. The reflectance of all the macerals was observed to increase with the pyrolysis temperature, temperature being the most relevant factor in determining the reflectance of inertinite macerals. The amount of unreactive inertinite exhibited a wide range of variation, with the lowest rank coals showing the smallest proportion of unreactive inertinite. The reflectance cut-off values separating reactive and unreactive inertinite decreased with coal rank to a stable value of ca. 1.5% for the highest rank coal. A 67-75% volatile matter release was required to cause a significant increase in the reflectance of the components.
机译：自从认识到黄酮在焦化过程中的行为不同以来，其热行为及其与焦炭性能的关系已成为人们广泛关注的研究课题。本研究的重点是表征六种来自上西里西亚（波兰）的不同等级的烟煤及其在相对大容量的热失重仪上在惰性气氛和良好控制的加热条件下获得的碳化产物。对在400,450,550,750和1000℃下碳化的样品进行了组合的黄斑反射率分析。在这样的条件下，只有反射率超过1.0％的煤通过了流体阶段，结果煤颗粒失去了完整性。观察到所有显微图像的反射率都随热解温度的增加而增加，温度是确定惰质显微图像的反射率的最相关因素。未反应性惰质的数量表现出很大的变化范围，最低等级的煤中未反应性惰质的比例最小。反应性和非反应性惰质的反射截止值随煤级降低至稳定值ca。最高等级煤炭为1.5％。需要释放67-75％的挥发性物质才能显着提高组件的反射率。

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  • 来源
    《Fuel》 |2013年第12期|21-30|共10页
  • 作者

    A. Guerrero; M.A. Diez; A.G. Borrego;

  • 作者单位

    Institute National del Carbon (INCAR-CSIC), Apartado 73, 33080 Oviedo, Spain;

    Institute National del Carbon (INCAR-CSIC), Apartado 73, 33080 Oviedo, Spain;

    Instituto Nacional del Carbon, CSIC, c/Francisco Pintado Fe 26, 33011 Oviedo, Spain;

  • 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

    Coking coal; Pyrolysis; Thermogravimetry; Coke; Maceral reactivity;

    机译：焦煤;热解;热重法;可乐;宏观反应性;

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