|本期目录/Table of Contents|

[1]杨宏民,鲁小凯.变质程度对CO2置换煤中CH4效应的影响规律[J].中国安全生产科学技术,2017,13(9):41-46.[doi:10.11731/j.issn.1673-193x.2017.09.006]
 YANG Hongmin,LU Xiaokai.Influence laws of metamorphic degree on replacement effect of CO2 to CH4 in coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(9):41-46.[doi:10.11731/j.issn.1673-193x.2017.09.006]
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变质程度对CO2置换煤中CH4效应的影响规律
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年9期
页码:
41-46
栏目:
学术论著
出版日期:
2017-09-30

文章信息/Info

Title:
Influence laws of metamorphic degree on replacement effect of CO2 to CH4 in coal
文章编号:
1673-193X(2017)-09-0041-06
作者:
杨宏民12鲁小凯1
(1.河南理工大学 安全科学与工程学院,河南 焦作 454003;2.煤矿灾害预防与抢险救灾教育部工程研究中心,河南 焦作 454003)
Author(s):
YANG Hongmin12 LU Xiaokai1
(1. School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China; 2. MOE Engineering Center of Mine Disaster Prevention and Rescue, Jiaozuo Henan 454003, China)
关键词:
变质程度置吸比置换率影响规律
Keywords:
metamorphic degree ratio of replacement to adsorption replacement rate influence laws
分类号:
TD713
DOI:
10.11731/j.issn.1673-193x.2017.09.006
文献标志码:
A
摘要:
为研究变质程度对CO2置换煤中CH4效应的影响规律,选用了无烟煤、瘦煤和气肥煤3种不同变质程度的煤样,在CH4吸附平衡压力分别为0.75 MPa和1.3 MPa的条件下,进行了高压注CO2置换煤中CH4实验。实验结果表明:初始CH4吸附平衡压力相同的条件下,CO2的注气压力越大(即注入量越大),CO2对CH4的置换量越大,置换率也越大,同时吸附置吸比也越大;初始CH4吸附平衡压力越高,注气后达到相同压力下的置换量越小,置换CH4越困难。煤的变质程度对置换效应的影响规律为,煤的变质程度越高,CO2对CH4的置换量越大,但CO2对CH4置换率却随之减小,说明低变质程度煤中的CH4更容易被置换。
Abstract:
In order to study the influence laws of metamorphic degree on replacement effect of CO2 to CH4 in coal, three kinds of coal samples with different metamorphic degree were selected, including the anthracite, lean coal and gas-fat coal, and the experiments of high pressure CO2 injection to replace CH4 in coal under the conditions that the adsorption equilibrium pressure of CH4 was 0.75 MPa and 1.3 MPa respectively were carried out in the laboratory. The results showed that under the same initial adsorption equilibrium pressure of CH4, the larger the injection pressure of CO2 (namely the greater injection amount), the greater the replacement amount of CO2 to CH4, the larger the replacement rate, and the larger the ratio of replacement to adsorption. The higher the initial adsorption equilibrium pressure of CH4, the smaller the replacement amount when reaching the same pressure after gas injection, and the more difficult to replace CH4. The influence laws of metamorphic degree of coal on the replacement effect was that the higher the metamorphic degree of coal, the greater the replacement amount of CO2 to CH4, but the replacement rate of CO2 to CH4 reduced, indicating that CH4 in coal with low metamorphic degree is easier to be replaced.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51174081); 河南省高校科技创新团队支持计划(17IRTSTHN030); 教育部创新团队发展支持计划(IRT-16R22)
更新日期/Last Update: 2017-10-12