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Effect of Carbonization Conditions on the Property and Structure of Bamboo Char for Injection in Blast Furnace

机译:碳化条件对高炉注射用竹炭性能和结构的影响

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摘要

To evaluate the effect of carbonization conditions on the bamboo, the relationship between carbonization parameter and physicochemical characteristics was studied. The results indicated that the volatile matter drastically decreased with the increase of carbonization temperature, while the fixed carbon and fuel ratio (fixed carbon/volatile matter) increased. Excellent linearity between the fuel ratio and carbonization temperature was obtained. The energy yield decreased gradually when rising the carbonization temperature, whereas the change of heating value was not obvious. A new calculation model of higher heating value (HHV) was developed, and it could be used to predict HHV of the bamboo char more precisely at temperatures above 300℃. The positive impact of functional groups, specific surface area as well as catalysis of alkali metal may contribute to the combustion of bamboo char. The results showed that there is a feasible operating condition for the transformation of bamboo into char with the carbonization parameter at 400℃ for 30 min.
机译:为了评价碳化条件对竹子的影响,研究了碳化参数与理化特性之间的关系。结果表明,随着碳化温度的升高,挥发物急剧减少,而固定碳和燃料比(固定碳/挥发物)增加。在燃料比和碳化温度之间获得了优异的线性。碳化温度升高时,能量产率逐渐降低,而发热量的变化不明显。提出了一种新的高热值计算模型,该模型可用于300℃以上温度下更准确地预测竹炭的HHV。官能团,比表面积以及碱金属的催化的积极影响可能有助于竹炭的燃烧。结果表明,在400℃下碳化30分钟,具有将竹转化为炭的可行操作条件。

著录项

  • 来源
    《ISIJ international》 |2019年第3期|442-449|共8页
  • 作者单位

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    State key laboratory of refractories and metallurgy, Wuhan University of Science and Technology, Wuhan, 430081 China;

    School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051 China;

    Swerea MEFOS, SE-971 25 Lulea, Sweden,Thermal and Flow Engineering Laboratory, Abo Akademi University, Abo, FI-20500 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
  • 中图分类
  • 关键词

    bamboo; blast furnace injection; carbonization conditions; heating value; combustion;

    机译:竹;高炉喷射碳化条件;热值燃烧;

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