|本期目录/Table of Contents|

[1]张明杰,周巍,杨娟,等.无烟煤对超临界态CH4-CO2气体吸附特性研究*[J].中国安全生产科学技术,2022,18(7):81-87.[doi:10.11731/j.issn.1673-193x.2022.07.012]
　ZHANG Mingjie,ZHOU Wei,YANG Juan,et al.Study on adsorption characteristics of anthracite coal to supercritical CH4-CO2 gas[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(7):81-87.[doi:10.11731/j.issn.1673-193x.2022.07.012]
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无烟煤对超临界态CH4-CO2气体吸附特性研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年7期
页码:
81-87
栏目:
职业安全卫生管理与技术
出版日期:
2022-07-31

文章信息/Info

Title:
Study on adsorption characteristics of anthracite coal to supercritical CH4-CO2 gas
文章编号:
1673-193X(2022)-07-0081-07
作者:
张明杰; 周巍; 杨娟; 梁锡明; 李哲
（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育基地，河南 焦作 454003；
2.河南理工大学 安全科学与工程学院，河南 焦作 454003；
3.中原经济区煤层（页岩）气河南省协同创新中心，河南 焦作454003）
Author(s):
ZHANG Mingjie;  ZHOU Wei;  YANG Juan;  LIANG Ximing;  LI Zhe
(1.State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China;
2.School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;
3.Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region,Jiaozuo Henan 454003,China)
关键词:
超临界态; 煤的吸附特征; 重量法; 二元气体吸附
Keywords:
supercritical state;  coal adsorption characteristic;  gravimetric method;  binary gas adsorption
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2022.07.012
文献标志码:
A
摘要:
为探究无烟煤对超临界态CH4-CO2混合气体的吸附特性，采用重量法开展无烟煤对纯CH4与纯CO2气体、3种体积浓度CH4-CO2混合气样的超临界等温吸附实验，应用过剩吸附理论和Langmuir单层吸附理论，通过校正绝对吸附量、计算吸附相密度、煤的比表面积以及测定吸附平衡后游离态气体组分，探究由亚临界状态到超临界状态下无烟煤吸附纯CH4、纯CO2以及混合气体的吸附相密度变化特征、混合气吸附特征以及吸附分子层数。研究结果表明：煤对纯CH4与纯CO2、混合气体过剩吸附量随着压力增大呈现出先增大后减小的峰值型曲线；CH4绝对吸附量随吸附压力增大不断增大，接近CH4临界压力时，绝对吸附量缓慢增加并趋于稳定。低压下CH4在煤颗粒中以单层吸附为主；超过临界压力后出现表面局部2层吸附的现象；1~3 MPa 时，CO2在煤颗粒中即表现出2层吸附为主的现象，随压力增大甚至出现局部4层吸附的现象，煤颗粒对CO2有更大的吸附能力。
Abstract:
In order to explore the adsorption characteristics of anthracite to the supercritical CH4-CO2 mixed gas,the supercritical isotherm adsorption experiments of anthracite on the pure CH4 gas,pure CO2 gas and CH4-CO2 mixed gas samples with three volume concentrations were carried out by the gravimetric method.The excess adsorption theory and Langmuir monolayer adsorption theory were applied,and the variation characteristics of adsorption phase density,the adsorption characteristics of mixed gas and the number of adsorbed molecular layers of anthracite adsorption on the pure CH4,pure CO2 and mixed gas from subcritical state to supercritical state were explored by correcting the absolute adsorption amount,calculating the adsorption phase density and the specific surface area of coal,and determining the free gas composition after adsorption equilibrium.The results showed that the excess adsorption amount of pure CH4,pure CO2 and mixed gas by coal presented a peak curve that increased first and then decreased with the pressure.The absolute adsorption amount of CH4 increased with the increase of adsorption pressure,and it increased slowly and tended to be stable near the critical pressure of CH4.Under low pressure,CH4 was mainly adsorbed in a single layer in the coal particles,and there would be the two-layer adsorption on the surface after exceeding the critical pressure.At 1~3 MPa,CO2 was mainly adsorbed in two layers in the coal particles,and the phenomenon of local 4-layer adsorption even appeared with the increase of pressure,so the coal particles had a greater adsorption capacity for CO2.

参考文献/References:

［1］李霞,崔涛.我国煤炭资源可持续发展的保障分析［J］.中国煤炭,2019,45(1):33-37. LI Xia,CUI Tao.Supportability analysis of sustainable development for coal resources in China［J］.China Coal,2019,45(1):33-37.
［2］刘成林,朱杰,车长波,等.新一轮全国煤层气资源评价方法与结果［J］.天然气工业，2009,29(11):130-132. LIU Chenglin,ZHU Jie,CHE Changbo,et al.A new round of national coalbed methane resource evaluation methods and results ［J］.Natural Gas Industry,2009,29(11):130-132.
［3］朱庆忠,杨延辉,左银卿,等.对于高煤阶煤层气资源科学开发的思考［J］.天然气工业,2020,40(1):55-60. ZHU Qingzhong.YANG Yanhui,ZUO Yinqing,et al.Thoughts on the scientific development of high-rank coalbed methane resources ［J］.Natural Gas Industry,2020,40(1):55-60.
［4］郭辉,李想,曾云,等.CO2 驱提高煤层气开采效果注入参数的实验研究［J］.当代化工,2016,45(11):2585-2588. GUO Hui,LI Xiang,ZENG Yun,et al.Experimental study on injection parameters for CO2 flooding to enhance the recovery of coal bed methane extraction［J］.Contemporary Chemical Industry,2016,45(11):2585-2588.
［5］李元星.连续与间歇注空气驱替煤层气机理及实验研究［D］.太原：太原理工大学,2017.
［6］石强,陈军斌,黄海,等.注气驱替提高煤层气采收率实验研究 ［J］.煤矿安全,2018,49(5):10-13. SHI Qiang,CHEN Junbin,HUANG Hai,et al.Experimental study on improving coalbed methane recovery by gas injection［J］.Safety in Coal Mines,2018,49(5):10-13.
［7］杨宏民,王兆丰,任子阳.煤中二元气体竞争吸附与置换解吸的差异性及其置换规律［J］.煤炭学报,2015,40(7):1550-1554. YANG Hongmin,WANG Zhaofeng,REN Ziyang.Differences between competitive adsorption and replacement desorption of binary gases in coal and its replacement laws［J］.Journal of China Coal Society,2015,40(7):1550-1554.
［8］李树刚,白杨,林海飞,等.CH4,CO2 和 N2 多组分气体在煤分子中吸附热力学特性的分子模拟［J］.煤炭学报,2018,43(9):2476-2483. LI Shugang,BAI Yang,LIN Haifei,et al.Molecular simulation of adsorption thermodynamics of multicompoment gas in coal［J］.Journal of China Coal Society,2018,43(9):2476-2483.
［9］张子敏.瓦斯地质学［M］.徐州:中国矿业大学出版社,2009.
［10］钟玲文,郑玉柱，员争荣，等.煤在温度和压力综合影响下的吸附性能及含气量预测［J］.煤炭学报,2002,27(6):581-585. ZHONG Lingwen,ZHENG Yuzhu,YUAN Zhengrong,et al.Coal adsorption performance and gas content prediction under the combined influence of temperature and pressure ［J］.Journal of China Coal Society,2002,27(6):581-585.
［11］CHAROENSUPPANIMIT P,MOHAMMAD S A,ROBINSON R L,et al.Modeling the temperature dependence of supercritical gas adsorption on activated carbons,coals and shales［J］.International Journal of Coal Geology,2015,138：123-126.
［12］于宝种.阳泉无烟煤对N2-CH4二元气体的吸附—解吸特性研究［D］.焦作：河南理工大学,2010.
［13］熊健,刘向君,梁利喜,等.页岩气超临界吸附的Dubibin-Asstakhov改进模型［J］.石油学报,2015,36(7):849-857. XIONG Jian,LIU Xiangjun,LIANG Lixi,et al.Dubibin-Asstakhov improved model for supercritical adsorption of shale gas ［J］.Journal of Petroleum,2015,36(7):849-857.
［14］刘操,张玉贵,贾天让,等.气源岩吸附试验的机理及吸附特征新认识［J］.煤炭学报,2019,44(11):3441- 3452. LIU Cao,ZHANG Yugui,JIA Tianrang,et al.New understanding of the mechanism and adsorption characteristics of gas source rock adsorption experiments ［J］.Journal of China Coal Society,2019,44(11):3441-3452.
［15］CAO L C,ZHANG Y G.Interpretation of Gibbs surface excess model for gas adsorption on heterogeneous coal particle［J］.Fuel,2018,214：20-25.
［16］XU H,TANG D Zh,ZHAO J L,et al.A new laboratory method for accurate measurement of the methane diffusion coefficient and its influencing factors in the coal matrix［J］.Fuel,2015,158：239-247.
［17］DO D D.Adosrption analysis:Equlibira and kinectics［M］.London:Imperial College Press,1988.
［18］吴双,汤达祯,李松,等.温度/压力对甲烷超临界吸附能量参数的影响机制［J］.煤炭科学技术,2019,47(9):60-67. WU Shuang,TANG Dazhen,LI Song,et al.Mechanism of temperature/pressure on the energy parameter of methane supercritical adsorption ［J］.Coal Science and Technology,2019,47(9):60-67.
［19］聂百胜,李祥春,崔永君.煤体瓦斯运移理论及应用［M］.北京:科学出版社,2014：41-43，133-134.
［20］HUMAYUN R,TOMASKO D L.High-resolution adsorption iso-therms of supercritical carbon dioxide on activated carbon［J］.AIChE Journal,2000,46(10):2065-2075.

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备注/Memo

备注/Memo:
收稿日期： 2021-09-27
*基金项目： 国家科技重大专项（2011ZX05040-005）;河南理工大学博士基金项目(B2017-04)；教育部创新团队计划项目（IRT_16R22）
作者简介： 张明杰,硕士,教授,主要研究方向为瓦斯地质与瓦斯治理。
通信作者： 杨娟，博士，教授，主要研究方向为能源与化学。
更新日期/Last Update: 2022-08-10