摘要
以淮北煤田任楼煤矿为研究对象,探究了煤中硅酸盐矿物对煤热解的影响。对任楼矿煤样进行酸洗脱除其中的硅酸盐矿物,并将原样与酸洗过的样品在相同条件下进行热重实验。实验结果显示,煤样RL-18-7的热解率为21.29%,煤样RL-18-7(去硅酸盐)的热解率为33.07%,煤样RL-18-4的热解率为28.04%,煤样RL-18-4(去硅酸盐)的热解率为39.30%,热解各个阶段去硅酸盐样品的热解率均大于原样。分析认为任楼煤矿煤中的硅酸盐矿物在煤的热解过程中起到抑制作用,原因主要有两个方面:硅酸盐矿物在煤热解的过程中能够阻止煤塑性颗粒的团聚;硅酸盐矿物具有吸附性,煤热解所产生的烃能够被黏土类矿物表面吸附留存,在一定程度上阻止了煤的进一步热解。
Taking Renlou coal mine in Huaibei coal field as the main research object, the influence of silicate minerals in coal on coal pyrolysis was studied. The silicate minerals in the coal samples of Renlou mine were removed by pickling, and the original samples and pickling samples were tested by thermogravimetric method under the same conditions.The experimental results show that the pyrolysis rate of RL-18-7 is 21.29%, that of coal sample RL-18-7 (desosilicate) is 33.07%, that of coal sample RL-18-4 (desosilicate) is 28.04%, and that of coal sample RL-18-4 (desosilicate) is 39.30%.The analysis shows that the silicate minerals in the coal of Renlou coal mine play an inhibitory role in the process of coal pyrolysis. The reasons are mainly as follows :silicate minerals can prevent the agglomeration of plastic particles in the process of coal pyrolysis;silicate minerals are adsorbent. Hydrocarbon generated by coal pyrolysis can be adsorbed and retained on the surface of clay minerals, which to some extent prevents further coal pyrolysis.
作者
王奇奇
冯松宝
WANG Qiqi;FENG Songbao(School of Resource and Civil Engineering,Suzhou University,Suzhou 234000,China;Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institute,Suzhou 234000,China)
出处
《河南工程学院学报（自然科学版）》
2019年第3期45-49,共5页
Journal of Henan University of Engineering：Natural Science Edition
基金
宿州学院重点学科项目(2017xjzdxk2)
宿州学院新工科试点专业建设项目(szxy2018xgk04)
宿州学院专业带头人项目(2019XJZY04)
宿州学院学术技术后备人才项目(2018XJHB08)
关键词
煤炭
热解
硅酸盐矿物
coal
pyrolysis
silicate minerals
