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首页> 外文期刊>Fuel >Bindered anthracite briquettes as fuel alternative to metallurgical coke: Full scale performance in cupola furnaces
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Bindered anthracite briquettes as fuel alternative to metallurgical coke: Full scale performance in cupola furnaces

机译：无烟煤压块作为冶金焦炭的替代燃料：冲天炉的全尺寸性能

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摘要

The authors have developed bindered anthracite briquettes that can replace conventional coke as a fuel in foundry cupolas. The anthracite briquettes included fine anthracite grains that were bindered together with collagen, lignin and silicon. These binders gave the briquettes high mechanical strength through the full spectrum of temperatures encountered in a foundry cupola furnace - from ambient temperature up to 1550 ℃. The bindered anthracite briquettes offered the same structural strength and fuel content as has conventional foundry grade coke. The conventional coking process involves pyrolyzing coal at 1000 ℃ for a day; and this consumes about 15% of the raw coal's energy, while releasing volatile organic air pollutants. In contrast, the briquetting process consumes scant energy, without releasing pollutants. During two full-scale demonstrations that each employed 4 tons of these briquettes, the anthracite briquettes performed similarly to the foundry grade coke, while the briquettes replaced up to 25% of the coke. During briquette replacements, the cupola temperatures, off-gas CO/CO_2 proportions, tuyere back-pressures, and metal-to-fuel ratios were maintained or improved. The iron castings produced during this briquette replacement were of the same high quality and composition as when mere coke was used; and these iron castings were sold. Observations through the tuyere windows - where oxygen-enriched air was lanced into the bottom of the cupola - showed that these anthracite briquettes reached the cupola's melting zone while maintaining their physical integrity. Once these briquettes reached the level of the tuyere windows, they exhibited faster burning in the oxygen-enriched air than did conventional coke.
机译：作者已经开发出无烟煤粘结煤球，可以替代传统焦炭作为铸造冲天炉的燃料。无烟煤团块包括无烟煤细颗粒，并与胶原蛋白，木质素和硅结合在一起。这些粘合剂在铸造冲天炉中遇到的整个温度范围（从环境温度到1550℃）中，赋予团块以较高的机械强度。粘结的无烟煤团块具有与传统铸造级焦炭相同的结构强度和燃料含量。常规的焦化过程包括在1000℃下热解一天的煤炭。这会消耗约15％的原煤能量，同时释放出挥发性有机空气污染物。相反，压块工艺消耗的能量很少，而不会释放污染物。在两次均使用4吨此类压块的大规模示范中，无烟煤压块的性能与铸造级焦相似，而压块最多替代了25％的焦。在更换团块期间，冲天炉的温度，废气中的CO / CO_2比例，风口背压以及金属与燃料的比例均得以保持或改善。更换团块过程中产生的铸铁具有与仅使用焦炭时相同的高质量和成分。这些铁铸件被出售。通过风口窗观察-将富含氧气的空气喷入冲天炉的底部-显示这些无烟煤团块到达冲天炉的熔化区，同时保持其物理完整性。一旦这些团块达到风口窗口的水平，它们在富氧空气中的燃烧速度就会比传统焦炭快。

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  • 来源
    《Fuel》 |2014年第4期|39-47|共9页
  • 作者

    Cesar Nieto-Delgado; Fred S. Cannon; Paul David Paulsen; James C. Furness; Robert C. Voigt; James R. Pagnotti;

  • 作者单位

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Fumess-Newburge Inc., Versailles, KY 40383, United States;

    Fumess-Newburge Inc., Versailles, KY 40383, United States;

    Department of Industrial and Manufacturing Engineering, The Pennsylvania State University, University Park, PA 16802, United States;

    Pagnotti Enterprises Inc., Wilkes-Barre, PA, United States;

  • 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

    Lignin; Coal; Fuel; Foundry; Silicon carbides; Collagen;

    机译：木质素煤;汽油;铸造厂碳化硅;胶原;

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