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›› 2013, Vol. 13 ›› Issue (5): 841-845.

• 过程与工艺 • 上一篇    下一篇

富氧输送对煤粉燃烧性能的影响

王平 郭泽华 李家新 龙红明 刘响   

  1. 安徽工业大学冶金与资源学院 安徽工业大学冶金与资源学院 安徽工业大学冶金与资源学院 安徽工业大学
  • 收稿日期:2013-06-18 修回日期:2013-08-19 出版日期:2013-10-20 发布日期:2013-10-20
  • 通讯作者: 王平

Effect of Oxygen-enriched Transportation on Combustibility of Pulverized Coal

WANG Ping GUO Ze-hua LI Jia-xin LONG Hong-ming LIU Xiang   

  1. School of Metallurgy and Resource, Anhui University of Technology School of Metallurgy and Resource, Anhui University of Technology School of Metallurgy and Resource, Anhui University of Technology Anhui University of Technology
  • Received:2013-06-18 Revised:2013-08-19 Online:2013-10-20 Published:2013-10-20
  • Contact: WANG Ping

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摘要： 实验研究了某钢铁厂2种喷吹用煤粉在空气和纯氧气氛下的热解特性及输送介质含氧量对其爆炸性和燃烧率的影响. 结果表明，纯氧气氛下煤粉的热解性能明显优于空气气氛；当输送介质含氧量低于51%(j)时，煤粉无爆炸性，高于61%(j)后煤粉呈弱爆炸性，且随含氧量增加爆炸性增强；富氧输送有助于提高煤粉的燃烧率，含氧量每增加10%，煤粉燃烧率提高1.97%；煤比(1 t铁消耗的煤粉量)增加会降低煤粉燃烧率，煤比每增加10 kg/t，燃烧率降低1.13%.

关键词: 高炉, 煤粉, 爆炸性, 富氧输送, 燃烧率

Abstract: Pyrolysis characteristics of two kinds of pulverized coal in air and oxygen, and the effects of oxygen content in transportation media on explosiveness and burning rate were studied. The results show that the pyrolysis characteristics of the pulverized coal in oxygen is better than that in air. When the oxygen content in transportation media is less than 51%(j), the explosiveness can be ignored. When it is higher than 61%(j), the explosiveness is enhanced. Oxygen content in transportation media is helpful to improve the burning rate of pulverized coal, and 1.97% of it is increased with the increase of 10% oxygen content. The burning rate of pulverized coal is reduced with the increase of mass ratio of pulverized coal to iron, and the rate is reduced 1.13% with the increase of 10 kg/t.

Key words: blast furnace, pulverized coal, explosiveness, oxygen-enriched transportation, burning rate

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