摘要
为测定含水率对煤吸附甲烷特性的影响,采用朱仙庄矿的焦煤、赵庄矿的贫煤与阳煤五矿的无烟煤作为研究对象,依据高压容量法对不同变质程度煤进行甲烷吸附研究.分析了煤吸附甲烷特性及a,b值的变化规律,推算出三种煤样的水分影响系数.结果表明:焦煤、贫煤与无烟煤对甲烷的吸附量都会随煤样含水率的升高而减小,且在低含水率阶段,煤对甲烷的吸附速率变化较快,高含水率阶段,变化较缓;煤样含水率对煤的吸附常数a的影响较小,呈一次函数下降,对煤的吸附常数b影响明显,呈指数函数下降;煤样水分含量与水分校正系数的影响程度A,会随着煤变质程度的增大而减小.
In order to determine the influence of moisture content of coal methane adsorption properties,the anthracite from the coking coal of Zhu Xianzhuang mine and the lean coal of Zhao Zhuang mine and Yang Mei mine was used as the research object,and the methane adsorption of different metamorphic coal was studied according to the high pressure volumetric method.The characteristics of coal methane adsorption,and a,b value change rule were derived,and the moisture influence coefficients of three coal samples were calculated.The results show that the coking coal,lean coal and anthracite of methane adsorption decreases with the increase of moisture content of coal samples.Small,and at low water content stage,the adsorption rate of coal to methane changes rapidly,and at high water content stage,the change is slow;The water content of coal sample has a small influence on the adsorption constant a of coal,and shows a function decline,while it has a significant influence on the adsorption constant b of coal,and shows an exponential function decline.The influence degree of moisture content and moisture correction coefficient of coal sample A will decrease with the increase of coal metamorphism degree.
作者
周西华
常利强
白刚
唐小煜
ZHOU Xihua;CHANG Liqiang;BAI Gang;TANG Xiaoyu(School of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,China;Key Laboratory of Mine Thermal Dynamics Disaster Prevention and Control Ministry of Education,Liaoning University of Engineering and Technology,Fuxin 123000,China;Coal Resource Safety Mining and Clean Utilization Engineering Research Center,Liaoning Technical University,Fuxin 123000,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2019年第5期402-408,共7页
Journal of Liaoning Technical University (Natural Science)
基金
国家重点研发计划项目(2018YFC0807900)
辽宁省教育厅重点项目(LJCL001).
关键词
含水率
吸附特性
吸附机理
吸附速率
水分影响系数
moisture content
adsorption characteristics
adsorption mechanism
adsorption rate
moisture influence coefficient
