褐煤热爆特性及影响因素试验研究

发布时间：2018-05-10 12:17

  本文选题：褐煤 + 热爆性　； 参考：《煤炭科学技术》2016年07期

【摘要】：为提高我国褐煤的利用效率,选取呼伦贝尔、元宝山、乌兰察布、兴安盟、宝清褐煤为研究对象,以粒度变化率作为衡量热爆性的指标,考察了煤质、初始平均粒径、受热温度、水分对褐煤热爆性的影响,并研究了热爆后碎片的结构特性。试验结果表明:褐煤的变质程度不同,热爆性有较大差别;初始平均粒径越大,受热温度越高,褐煤的热爆性越强;水分是影响褐煤热爆的重要因素,150℃下干燥1 h后样品的热爆性与原煤相比可降低50%以上;褐煤在热爆过程中产生了大量新孔,褐煤的水分和挥发分越高,热爆后碎片的孔隙结构越发达。
[Abstract]:In order to improve the utilization efficiency of lignite in China, Hulunbeir, Yuanbaoshan, Wulanchabu, XingUNITA and Baoqing lignite were selected as the research objects. The effects of heating temperature and moisture on the thermal explosion of lignite were studied. The results show that the thermal explosion property of lignite is different with the metamorphic degree of lignite, the larger the initial average particle size is, the higher the heating temperature is, the stronger the thermal explosion property of lignite is. Moisture is an important factor affecting the thermal explosion of lignite. After drying at 150 鈩，

本文编号：1869275