低阶煤与冷轧氧化铁红共热解半焦的燃烧特性

付鹏睿1， 何选明1*， 张容2, 曾宪灿1， 许超1

（1.武汉科技大学 湖北省煤转化与新型碳材料重点实验室；化学工程与技术学院，湖北 武汉 430081;

2.东华大学 化学化工与生物工程学院，上海 201620）

摘要： 采用固定床热解装置制备神木长焰煤与冷轧氧化铁红热解终温为550 ℃的共热解半焦。扫描电子显微镜(SEM)分析结果表明，冷轧氧化铁红可以催化煤的热解，增加半焦表面的裂纹及孔隙；X射线衍射(XRD)分析结果表明，煤与冷轧氧化铁红共热解降低了半焦碳的微晶结构的石墨化程度，提高其氧化反应活性；由热分析结果可知，共热解半焦的综合燃烧特性指数（Sn）比原料煤半焦高635%，燃烧反应活化能比原料煤半焦低397%，表明共热解半焦的燃烧性能优于原料煤半焦，煤与冷轧氧化铁红共热解可改善半焦的燃料品质，拓宽半焦作为燃料的利用领域。

 关键词： 低阶煤； 冷轧氧化铁红； 半焦； 燃烧性能

中图分类号： TQ 530.2                 文献标志码： A

Combustion Property of Copyrolysis Coal Char of  Low Rank Coal and Cold Rolling Iron Oxide Red

FU Pengrui1, HE Xuanming1, ZHANG Rong2， ZENG Xiancan1, XU Chao1

 (1.Hubei Coal Conversion and New Carbon Materials Key Laboratory； College of Chemistry Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China;

2.College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China)

Abstract： Copyrolysis coal char of shenmu longflame coal and cold rolling iron oxide red at final pyrolysis temperature 550 ℃ were prepared using fixed bed pyrolysis apparatus.  The combustion behavior of char samples were investigated by a thermal gravimetric analyzer. SEM (scanning electron microscopy) results showed cold rolling iron oxide red can catalyze coal pyrolysis, and increase the quantity of pore and crack on the surface of copyrolysis char. XRD (Xray diffractometry) analysis revealed that cold rolling iron oxide red can significantly bring down the degree of graphitization for microcrystalline structure of copyrolysis char, and improve its oxidation reaction activity. Thermal analysis results demonstrated that the general combustion parameter (Sn) and combustion reaction activation energy of copyrolysis coal char was 635% higher and 397% lower than that of char of raw coal respectively, indicated copyrolysis char have a better combustion than char of raw coal. The results corroborated that cold rolling iron oxide red improved fuel quality of char and expanded the field of application of coal char as a fuel.

Key words：  low rank coal; cold rolling iron oxide red; coal char; combustion behavior

收稿日期： 20140508

作者简介：  付鹏睿（1987—），男，硕士研究生.      *通信联系人.