文献类型：期刊文献

英文题名：Experimental study on adsorption promotion and desorption restrain of gas-containing coal in low-temperature environment

作者：Wang, Fakai Li, Xuelong Cui, Bo Hao, Jian Gao, Xin Long, Kun Chen, Peng Wang, Sheng

第一作者：王法凯

通信作者：Li, XL[1];Li, XL[2];Li, XL[3]

机构：[1]Guizhou Inst Technol, Coll Min Engn, Guiyang 550000, Guizhou, Peoples R China;[2]Shandong Univ Sci & Technol, Mine Disaster Prevent & Control Minist, State Key Lab Breeding Base, Qingdao 266590, Peoples R China;[3]Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Shandong, Peoples R China;[4]Chongqing Univ, Coll Resources & Environm Sci, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China;[5]North China Inst Sci & Technol, Sch Safety Engn, Langfang 101601, Peoples R China

第一机构：贵州理工学院矿业工程学院

通信机构：corresponding author), Shandong Univ Sci & Technol, Mine Disaster Prevent & Control Minist, State Key Lab Breeding Base, Qingdao 266590, Peoples R China;corresponding author), Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Shandong, Peoples R China;corresponding author), Chongqing Univ, Coll Resources & Environm Sci, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China.

年份：2021

卷号：14

期号：12

外文期刊名：ARABIAN JOURNAL OF GEOSCIENCES

收录：;Scopus(收录号：2-s2.0-85107603063);WOS:【SCI-EXPANDED(收录号:WOS:000677556200010)】；

基金：This work is supported by the National Natural Science Foundation of China (51904167, 51474134, and 51774194), Research Fund of the State Key Laboratory of Coal Resources and Safe Mining (CUMT) (SKLCRSM19KF008), Taishan Scholars Project, Taishan Scholar Talent Team Support Plan for Advantaged & Unique Discipline Areas, Natural Science Foundation of Chongqing, China (cstc2019jcyj-bsh0041), Postdoctoral Science Foundation Project funded by the State Key Laboratory of Coal Mine Disaster Dynamics and Control (2011DA105287-BH201903), Key R&D plan of Shandong Province (2019SDZY034-2), Cultivation and exploration and innovation project of new academic seedlings of Guizhou Institute of Technology (GZLGXM-04), and Natural Science Foundation of Hebei Province (E2019508100). We thank anonymous reviewers for their comments and suggestions to improve the manuscripts.

语种：英文

外文关键词：Low temperature environment; Gas desorption; Adsorption promotion; Desorption restrain

摘要：Aiming at the problem that the coal seam temperature is high and the gas desorption rate is fast, the gas content loss is estimated to be biased, resulting in inaccurate measurement of coal seam gas content. This paper proposes a method for taking the coal samples at low temperature (below 0 degrees C) in order to improve the accuracy of gas content measurement by suppressing the release of gas. Based on the importance of gas adsorption desorption in the prediction of gas diffusion law in coal, this paper analyzes the gas adsorption/desorption characteristics of standard size raw coal in low-temperature environment with self-designed low-temperature environment gas adsorption/desorption test platform. Experimental study has been conducted on the gas adsorption promotion and desorption restrain of environmental coal. The results show that (1) the temperature increase promotes the adsorption of coal to gas. The lower the temperature is, the more obvious the adsorption effect will be; and the lower the temperature inhibits the gas desorption; likewise the lower the temperature is, the more obvious the restrain of desorption will be. (2) The gas desorption rate of coal can be divided into three significant stages. Among them, stage I has the shortest time, the desorption rate is the largest, and the gas desorption amount is the most; stage III is the longest, the gas desorption rate is the second, and the gas desorption amount is the middle; stage II desorption rate is the smallest, and the desorption amount is the least. (3) Lowering the temperature has different effects on the gas desorption rate of coal in three stages. The gas desorption rate of the coal in the first stage is mainly suppressed, and the gas desorption rate data has a quadratic function increasing with the increase of the adsorption equilibrium temperature. However, the gas desorption in the second and third stages of coal is a promoting effect, and the gas desorption rate data decreases with the increase of the adsorption equilibrium temperature. (4) The research on the gas desorption restrain effect of low temperature environment coal will provide theoretical basis for the development and application of underground cryo-coring technology.