河南省胡襄煤田煤的吸附性及影响因素  

Adsorbability and influence factors of coal in Huxiang coalfield in Henan Province

作　　者：冯斌[1,2] 郭新体[2] 王昆[2] 苗书雷[2] FENG Bin GUO Xinti WANG Kun MIAO Shulei(School of Water Resources and Environment, China University of Geosciences （Beijing）, Beijing 100083, China No.4 Institute of Geological and Mineral Resources Survey of Henan, Shangqiu 476000, China)

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]河南省地质矿产勘查开发局第四地质矿产调查院,河南商丘476000

出　　处：《煤田地质与勘探》2016年第5期86-90,共5页Coal Geology & Exploration

摘　　要：为研究胡襄煤田煤对CH_4吸附性及影响因素,对所采集煤样进行了等温吸附实验和压汞实验,研究了煤的吸附性及温度、压力、水分和灰分等因素对煤的吸附性影响。实验结果表明:胡襄煤田煤的吸附量开始随压力(0~1.5 MPa)的增加呈线性增大,之后(1.5~2.63 MPa)增大趋势减缓,增至2.63 MPa时,达到饱和吸附量的一半左右,在10 MPa左右时,吸附量趋于饱和;煤的吸附量较大,Langmuir体积VL为18.30~29.96 cm^3/g;煤样以过渡孔最发育,其次为微孔和大孔,中孔相对最不发育,因此胡襄煤田煤的吸附量较大;水分对煤的吸附性影响较弱,而灰分的影响相对显著。In order to study CH4 adsorbability and the influencing factors of coal in Huxiang coalfiel, the mercury-injection experiment and isothermal adsorption experiment have been performed on the collected coal samples,the adsobability and the influence of temperature, pressure, moisture, ash content on the adsorbabilty have beenstudied. The results of the experiments showed that a. initially the adsorbing capacity increased linearly with thepressure（0-1.5 MPa）, later （1.5-2.63 MPa） the increasing trend slowed down, when the pressure increased to 2.63MPa, the adsorbing capacity was about half of saturation at 10 MPa tended to be saturated; b. the adsorbing capacitywas larger, Langmuir volume VL was 18.30-29.96 cm^3/g; transitional pores were the most developed in coalsamples, followed by micropores and macropores, mesopores were the least, therefore the adsorbing capacity ofcoal in Huxiang coalfield was relatively big; c. the moisture had less influence on the adsobability, but the ashcontent had remarkable influence.

关 键 词：胡襄煤田 吸附性 压汞 等温吸附 

分 类 号：TE13[石油与天然气工程—油气勘探]