Relationship between Maceral of Coal and Coal-bed Methane adsorption ability in Sihe Coalmine of Qinshui Basin, China

International Conference on Computer Information and Automation Engineering

计算机科学;运输工程

Wang, M.S.^1 ; Zou, G.G.^2 ; Zhu, R.B.^2

School of Mechanics and Architectural Engineering, China University of Mining and Technology (Beijing), Beijing

100083, China^1

College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing

100083, China^2

关键词: Adsorption capacities;    Cellular structure;    Hydrocarbon generation;    Linear correlation;    Maceral composition;    Methane adsorption;    Methane adsorption capacity;    Microscopic characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/359/1/012026/pdf
DOI  :  10.1088/1757-899X/359/1/012026

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Maceral components and its content of coal were divided based on the microscopic characteristics of coal. The Langmuir volume and the Langmuir pressure were tested, and the Langmuir volume represents the adsorption capacity of coal. The formation of coal bed methane is affected by the partition of the maceral components in coal. Therefore, the relationship between maceral composition and coal bed methane adsorption capacity of coal was analyzed. The results show that the maceral components of coal are dominated by vitrinite and inertinite in the study area, and the content of inertinite is below 32%. The vitrinite group has a negative linear correlation with the Langmuir volume, and the inertia composition has a positive linear correlation with it. The cellular structures in the inertinite are the main site of coal bed methane enrichment. The microstructure of coal affects the coalbed methane content and the stage of hydrocarbon generation in coal. This indicates that the microstructure of coal is one of the important factors influencing the adsorption capacity of coal seam.