新疆和什托洛盖盆地西山窑组低阶煤孔隙结构特征

发布时间：2018-05-01 08:06

本文选题：和什托洛盖盆地 + 低阶煤　；参考：《煤炭科学技术》2017年04期

【摘要】：基于低温氮吸附试验,从吸附-脱附曲线形态、孔径分布和FHH分形特征等方面分析了新疆和什托洛盖盆地西山窑组低阶煤孔隙结构特征,并从镜质体反射率、煤岩显微组分、工业分析组分方面探讨了煤孔隙结构与煤质之间的关系。结果表明:孔隙类型以微孔和小孔为主,孔隙形态多以"墨水瓶"状孔和开放型孔为主,存在少量一端封闭型孔;孔隙分形维数越大,孔隙比表面积和孔容越大,平均孔径越小,孔隙系统越趋于复杂;孔容和BET比表面积随惰质组含量增加而增大,随镜质组含量增加而减小,二者与矿物质含量关系整体呈不对称的"V"字形,在矿物质含量为1%处转折。此外,镜质组反射率、水分和灰分的增加,降低了孔容和BET比表面积。
[Abstract]:Based on the low temperature nitrogen adsorption test, the pore structure characteristics of low rank coal of Xishanyao formation in Xinjiang and Shitorogei Basin were analyzed from the aspects of adsorption and desorption curve shape, pore size distribution and FHH fractal characteristics, and the vitrinite reflectance and macerals of coal and rock were analyzed. The relationship between coal pore structure and coal quality is discussed in terms of industrial analysis components. The results show that the pore types are mainly micropores and micropores, and the pore forms are mostly "ink bottle" and open pores, and there are a few closed pores at one end, and the larger the fractal dimension of pores, the larger the specific surface area and pore volume. The smaller the average pore size is, the more complex the pore system is, the larger the pore volume and BET specific surface area are with the increase of the content of inertinite, the less the content of vitrinite is. The relationship between them and mineral content is asymmetrical "V" shape as a whole. At a mineral content of 1%. In addition, the increase of vitrinite reflectance, moisture and ash decreased the pore volume and BET specific surface area.
【作者单位】：中国矿业大学煤层气资源与成藏过程教育部重点实验室;中国地质大学(武汉)资源学院;
【基金】：国家科技重大专项资助项目(2011ZX05033-01-08) 国家自然科学基金重点资助项目(U1361207)
【分类号】：P618.11

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