中文摘要：

为分析新疆哈密长焰煤微孔隙结构及其分布特点,应用激光共聚焦显微镜和比表面及孔径分析仪观测煤样颗粒孔隙结构及孔隙孔径、孔容和比表面积分布特性,并对测试结果进行分析.结果显示：煤颗粒表面存在圆形和椭圆形气孔,也存在清晰的植物组织孔.煤样颗粒被加热,大孔结构形式产生很大变化,粒条带状纤维沿相同走向构成的孔隙增多,气孔边缘或两个气孔相邻孔壁有＂S＂型弯曲.煤样中孔的孔径由小至大连续完整,孔径尺寸无上限.较小孔径范围内孔大都为一端封闭孔,只有少量开放性孔.煤样颗粒中孔径为2~100 nm占较大比例,而且在孔径2~5 nm内分布强度和分布集中度较强.低温热解对小于500 nm微孔隙结构并无明显影响.

英文摘要：

To study the characteristics of the micro-pore structure and distribution of the long flame coal mined in Hami, both the confocal scanning laser microscope and unit surface area and pore size analyzer were used to observe and measure the micro-pore structure, the distribution of the pore size, volume and surface area of all kinds of pore in the sample coal, and the experimentalresults were analysed. Results show that there are gas pores and tissue stucture pores in the surface of the sample coal. Heating the the sample coal, the structure of the big size pores changes a lot, and present tissue stucture pores with more band particles, and ＂S＂ type bending appears at gas pores edges or the neighber wall between two gas pores. There are continuance sizes from small size pores to big size pores, and there is no upper limitpore size in the sample coal. In smaller size pore range in the sample coal, micro-pore struetures mostly have one end closed, and scarcely have two ends opened. The pores in 2 -- 100 nm size range have a higher percentage, and the pores in 2 -- 5 nm size range have strong distribution intensity and concentration in the sample coal. Low temperature pyrolysis has little influence on the microscope structure of the pores less than 500 nm pore size.