富氧输送对煤粉燃烧性能的影响  

Effect of Oxygen-enriched Transportation on Combustibility of Pulverized Coal

作　　者：王平[1] 郭泽华[1] 李家新[1] 龙红明[1] 刘响[1] 

机构地区：[1]安徽工业大学冶金与资源学院,安徽马鞍山243002

出　　处：《过程工程学报》2013年第5期841-845,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:51274003);国家自然科学基金与宝钢联合资助项目(编号:U1260101)

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%(φ)时,煤粉无爆炸性,高于61%(φ)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%.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%（φ）, the explosiveness can be ignored. When it is higher than 61%（φ）, 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.

关 键 词：高炉 煤粉 爆炸性 富氧输送 燃烧率 

分 类 号：TF538.63[冶金工程—钢铁冶金]