静电场对煤样吸附瓦斯的影响研究  

Research on the Effect of Electrostatic Field on Gas Adsorption of Coal Samples

作　　者：雷东记[1] 郭晓洁[1] 

机构地区：[1]河南理工大学河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南焦作454000

出　　处：《煤矿安全》2015年第4期5-8,共4页Safety in Coal Mines

基　　金："十二五"国家科技重大专项课题资助项目(2011ZX05040-005);河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地外部开放基金资助项目(WS2013A11);河南理工大学博士基金资助项目(60107/003);河南省教育厅科学技术重点研究资助项目(14A440008)

摘　　要：为研究静电场对瓦斯吸附作用的影响,运用EST802静电发生器对不同煤样分别施加0、4、8、12、16 k V的恒定电压,然后采用WY-98B吸附常数测定仪测定各煤样的瓦斯吸附量及Langmuir吸附常数a、b值。得出:在相同实验条件下,加场前后煤样瓦斯吸附量随电压升高而增加,b值相对a值变化明显,且呈增大趋势;对于不同煤阶不同破坏类型煤样受静电场影响程度上有:中高变质的烟煤大于无烟煤,软煤大于硬煤,且煤岩组分对含瓦斯煤样的电场响应程度影响较大。In order to study the influence of electrostatic field on gas adsorption,constant voltages（0、4、8、12、16kV） were exerted with EST802 electrostatic generator on different coal samples,then WY-98B adsorption constants tester was used to determine the gas adsorption amount and Langmuir adsorption constants a and b of different coal samples.The results showed that under the same experimental condition,the gas adsorption amount increased with voltages increasing before and after adding electrostatic field,b value changed significantly relative to a and had an increasing trend.For different coal rank and different damage types,the influence degree of the electrostatic field on coal samples included that the middle-high deterioration bituminous coal was greater than the anthracite coal,the soft coal was greater than hard coal,and the coal rock components had a greater influence on electrostatic field response of coal samples which contained gas.

关 键 词：静电场 煤阶 瓦斯吸附 固定碳 吸附常数 

分 类 号：TD713.1[矿业工程—矿井通风与安全]