基于Langmuir模型含水率对构造煤吸附CH_(4)/CO_(2)影响试验研究  

Experimental Study on Effect of Moisture Content on Adsorption of CH_(4) and CO_(2) by Structural Coal Based on Langmuir Model

作　　者：莫桥顺 江泽标[1,2] 杨希法 权西平 陈思粮 MO Qiaoshun;JIANG Zebiao;YANG Xifa;QUAN Xiping;CHEN Siliang(College of Mining,Guizhou University,Guiyang 550025,China;Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources in Guizhou,Guiyang 550025,China)

机构地区：[1]贵州大学矿业学院,贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵阳550025

出　　处：《煤炭技术》2024年第5期261-264,共4页Coal Technology

基　　金：贵州省科技厅资助项目(黔科合支撑[2020]4Y050号)。

摘　　要：为探究不同含水率条件下煤样对CH_(4)/CO_(2)单组分气体的吸附特性,以六盘水攀枝花煤矿为研究对象,利用吸附试验(CH_(4)吸附、CO_(2)吸附)结合Langmuir模型对不同含水率状态下的构造煤煤样进行试验,研究结构表明:运用Langmuir拟合对吸附量大小进行研究,其拟合相关系数R^(2)>0.99,在恒温恒压下,随着含水率的增加其CH_(4)吸附与CO_(2)吸附量均减小,且CH_(4)吸附量均小于CO_(2)吸附;对于同一含水率煤样,煤样对气体吸附量随着压力的增大先增大后达到平衡,根据Langmuir拟合得到极限吸附值a,其极限吸附量a值与含水率呈负相关关系,并且CO_(2)的a值均大于CH_(4)的a值。In order to explore the adsorption characteristics of structured coal under different water content states,the Liupanshui Panzhihua coal mine was taken as the research object.Adsorption experiments(CH_(4) adsorption,CO_(2) adsorption)were combined with Langmuir model to test the coal samples of structured coal under different water content states.The research structure showed that by using Langmuir model to fit the CH_(4) adsorption experiment and CO_(2) adsorption experiment data,the fitting correlation coefficient R^(2)>0.99,it has a high degree of fit,and under constant temperature and pressure,the amount of CH_(4) adsorption and CO_(2) adsorption decrease with the increase of water content,and the amount of CH_(4) adsorption is smaller than that of CO_(2) adsorption;for coal samples with the same moisture content,the gas adsorption capacity of the coal sample first increases and then reaches equilibrium with the increase of pressure.According to Langmuir fitting,the limit adsorption value a is obtained,and its limit adsorption capacity a is negatively correlated with the moisture content.Moreover,the a value of CO_(2) is greater than the a value of CH_(4).

关 键 词：LANGMUIR模型 含水率 构造煤 吸附特性 极限吸附量 

分 类 号：TD713[矿业工程—矿井通风与安全]