發(fā)布時(shí)間：2018-06-28 07:45

  本文選題：瓦斯 + 吸附性��； 參考：《煤炭學(xué)報(bào)》2016年11期

【摘要】：采用直流電場作為物理場,利用已研制的電場作用下煤的瓦斯吸附試驗(yàn)裝置,對電壓作用下煤的瓦斯吸附性進(jìn)行了試驗(yàn)研究,對電壓作用前后試驗(yàn)煤樣表面結(jié)構(gòu)進(jìn)行了XPS能譜測試,對煤樣表面結(jié)構(gòu)C元素含氧官能團(tuán)的種類及其相對含量進(jìn)行了分析,目的是基于煤表面結(jié)構(gòu)揭示電場作用對煤的瓦斯吸附性影響機(jī)理。試驗(yàn)結(jié)果表明:電壓作用可以弱化煤的瓦斯吸附性,在80 k Hz/1 k V,80 k Hz/3 k V和80 k Hz/5 k V電場作用下,煤表面結(jié)構(gòu)C元素含氧官能團(tuán)發(fā)生改性,C—C/C—H鍵相對含量從47.22%減少到24.95%,生成C—O鍵、C=O羰基官能團(tuán)、COO—羧基或醌官能團(tuán),使得這3種含氧官能團(tuán)相對含量增加,其最大值分別為54.44%,13.89%和7.39%;隨著煤表面結(jié)構(gòu)C元素C—C/C—H鍵相對含量的減少,煤的瓦斯飽和吸附量a呈線性規(guī)律減小,吸附常數(shù)b呈指數(shù)規(guī)律減小;與電場作用前相比,作用后煤總孔面積、中值孔徑(體積)、中值孔徑(面積)和平均孔徑等孔隙結(jié)構(gòu)參數(shù)均增加。
[Abstract]:Using DC electric field as physical field, the gas adsorption test device of coal under the action of electric field has been developed, and the gas adsorption property of coal under the action of voltage has been studied experimentally. The surface structure of coal samples before and after the voltage action was measured by XPS energy spectrum. The types and relative contents of oxygen functional groups of C elements in the surface structure of coal samples were analyzed. The purpose of this paper is to reveal the influence mechanism of electric field action on coal gas adsorption based on coal surface structure. The experimental results show that the gas adsorption of coal can be weakened by the voltage action under the electric field of 80 Hz / 1 kV / 80 k Hz / 3 kV and 80 k Hz / 5 kV electric field. The relative content of C / C / C-H bond of C element in coal surface structure was reduced from 47.22% to 24.95%, and the COO- carboxyl or quinone functional group was formed, which resulted in the increase of the relative content of the three oxygen-containing functional groups. The maximum values were 54.44% and 7.39%, respectively. With the decrease of the relative content of C-C / C-H bond on coal surface structure, the saturated adsorption capacity a of coal decreased linearly, and the adsorption constant b decreased exponentially, compared with that before the electric field. The pore structure parameters such as total pore area, median pore size (volume), median pore size (area) and average pore size are increased after action.
【作者單位】： 太原理工大學(xué)礦業(yè)工程學(xué)院;太原科技大學(xué)環(huán)境與安全學(xué)院;山西煤炭運(yùn)銷集團(tuán)科學(xué)技術(shù)研究有限公司;
【基金】：山西省自然科學(xué)基金資助項(xiàng)目(2015011054)
【分類號】：TD712

【相似文獻(xiàn)】

相關(guān)期刊論文 前4條

1 徐燦校;;國外吸附性礦物的農(nóng)肥應(yīng)用[J];礦產(chǎn)綜合利用;1991年01期

2 關(guān)曉;;用沸石提高浮選過程中的吸附性和回收率[J];建材工業(yè)信息;1985年15期

3 姚多喜，，呂勁;淮南礦區(qū)煤的甲烷吸附性研究[J];東北煤炭技術(shù);1995年06期

4 ;[J];;年期

相關(guān)碩士學(xué)位論文 前1條

1 李鳳龍;弱吸附性氮?dú)鈱γ褐屑淄榈闹脫Q效應(yīng)[D];河南理工大學(xué);2015年

本文編號：2077257