以高炉渣为热载体进行煤热解的实验研究  

Experimental study on pyrolytic reaction characteristics of coal with in blast furnace slag

作　　者：陈婉 李朋 

机构地区：[1]重庆赛迪热工环保工程技术有限公司

出　　处：《冶金能源》2017年第2期40-44,63,共6页Energy For Metallurgical Industry

基　　金：重庆市基础与前言研究计划项目(cstc2014jcyj A90002);国家科技支撑计划项目(2013BAA03B03)

摘　　要：利用STA409PC综合热分析仪以程序升温热重法对高炉熔渣中煤的热解反应进行了研究,主要考察了煤渣比、煤种对热解反应的影响。实验结果表明,热解分为三个过程:脱水阶段、挥发分析出阶段和碳化阶段。随着高炉渣加入量的增加,热解过程的热解的起始温度、最大失重温度逐渐提前,煤样热解的活性逐渐增强。高炉熔渣对煤的热解反应具有一定的促进作用,但当高炉渣的添加量增加到一定程度后,这种促进作用不再明显,甚至起到阻碍作用。在相同的反应条件下,不同煤种反映出不同的热解反应特性,随着煤中的碳化程度的加深,煤的分解活性降低。高炉渣对低碳、高灰分的沈南贫煤的催化促进作用更为明显。The coal pyrolytic reactions in blast furnace slag were studied kinetically by the temperature programming thermogravimetry using STA409PC thermal analyzer. The effects of coal - slag ration and coal type on reaction were investigated. The results showed that the coal pyrolytic generally has to go through three stages of the dewatering stage, volatilization separated out stage, and carbonization stage. The initial temperature and the pyrolytic activity both increase with increasing coal - slag ration. The molten blast furnace slag benefits the coal pyrolytic reaction. But when the coal - slag ration get a spe-cific value, the catalytic action of blast furnace slag will become weaker, even it could bring certain in-hibitory effect. At the same reaction condition, different types of coal have different pyrolytic reaction characteristics, reaction activity of coal decreased with the increase of carbonized degree. Molten blast furnace slag has obvious catalysis for shennan coal with lower carbon content and higher ash content.

关 键 词：煤 热解 高炉熔渣 余热回收 

分 类 号：TF534[冶金工程—钢铁冶金]