微波作用对颗粒煤瓦斯解吸规律影响的实验研究  

Experimental Study on the Effect of Microwave on Particles Coal Gas Desorption Rule

作　　者：温志辉[1,2,3] 代少华[1,2,3] 任喜超 李满贵[1,2,3] 

机构地区：[1]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训基地(河南理工大学),焦作454000 [2]河南理工大学安全科学与工程学院,焦作454000 [3]煤炭安全生产河南省协同创新中心,焦作454000

出　　处：《微波学报》2015年第6期91-96,共6页Journal of Microwaves

基　　金：国家自然科学基金(51404100);国家重点基础研究发展计划(973计划)(2012CB723103);教育部"创新团队发展计划"(IRT1235)(11078003)

摘　　要：为了研究微波对颗粒煤解吸规律的影响,利用1500W的微波对粒径为1~3mm的烟煤进行了不同时间的改性,通过实验室搭建的吸附解吸测试系统进行了各实验煤样在不同吸附平衡压力下的瓦斯解吸实验,并对各实验煤样的瞬间解吸量、累积解吸量,以及各煤样的比表面积和孔隙分布进行了对比分析。结果表明:随着微波作用时间的增加,煤样自身得到加热的同时改变了煤样的孔隙结构;主要表现在相同吸附平衡压力下,各实验煤样微波作用3min和5min时的瞬间解吸量和累计解吸量均产生"拐点",呈现了先增加后减小,再增加的变化趋势和规律,且对瓦斯吸附起决定性作用的微孔的比表面积和孔隙体积的分布规律亦出现上述变化趋势;最后初步探讨分析了微波对颗粒煤解吸特性影响的作用机理。In order to study the effect of microwave on particles coal desorption rule,using the 1500 W microwave to deal with the 1 ~ 3mm bituminous coal under different time conditions. Carried out the coal samples gas desorption experiments under different adsorption equilibrium pressures by the adsorption and desorption test system in the lab,and comparative analysed the instantaneous desorption quantity,cumulative desorption quantity,pore specific surface area and pore distribution. The results show that when the coal samples were heated,its pore structure and distribution were changed with the increasing of microwave irradiation time; under different adsorption equilibrium pressures,the coal samples' instantaneous desorption quantity and cumulative desorption quantity appeared inflection point in the third minute and fifth minute,which increased firstly,then decreased and then increased again after five minutes. And so were the pore specific surface area and volume that crucial for gas adsorption has the same rule. Finally,the microwave' s influence mechanism to the desorption characteristic of the particles coal is discussed preliminary.

关 键 词：颗粒煤 微波作用 瓦斯解吸 作用机理 

分 类 号：TD712[矿业工程—矿井通风与安全] TN015[电子电信—物理电子学]