中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (7): 115-120.doi: 10.16265/j.cnki.issn1003-3033.2017.07.021

• 安全工程技术科学 • 上一篇    下一篇

突出危险型煤瓦斯等温解吸试验研究

张遵国1,2 讲师, 曹树刚3 教授, 洪林1,2 副教授, 郭平4 助理研究员, 张一夫1,2 讲师, 齐消寒1,2 讲师   

  1. 1 辽宁工程技术大学 安全科学与工程学院,辽宁 葫芦岛 125105;
    2 矿山热动力灾害与防治教育部重点实验室,辽宁 葫芦岛 125105;
    3 煤矿灾害动力学与控制国家重点实验室,重庆 400044;
    4 中煤科工集团重庆研究院有限公司,重庆 400037
  • 收稿日期:2017-04-21 修回日期:2017-06-29 发布日期:2020-11-26
  • 作者简介:张遵国 (1986—),男,重庆人,博士,讲师,主要从事矿井瓦斯灾害防治方面的研究。E-mail:zhang_zung@163.com。
  • 基金资助:
    国家自然科学基金资助(51474039,51704147);煤矿灾害动力学与控制国家重点实验室自主课题(2011DA105287-ZD201302);辽宁省教育厅科学研究一般项目(LJYL005)。

Experimental study on isothermal desorption of methane from outburst-prone briquette

ZHANG Zunguo1,2, CAO Shugang3, HONG Lin1,2, GUO Ping4, ZHANG Yifu1,2, QI Xiaohan1,2   

  1. 1 College of Safety Science and Engineering, Liaoning Technical University, Huludao Liaoning 125105, China;
    2 Key Laboratory of Mine Thermodynamic disasters and Control of Ministry of Education, Huludao Liaoning 125105, China;
    3 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing 400044, China;
    4 China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400037, China
  • Received:2017-04-21 Revised:2017-06-29 Published:2020-11-26

摘要: 为深入研究突出危险煤瓦斯解吸特征,以块状型煤为研究对象,开展瓦斯等温吸附和解吸试验,分析解吸试验过程中最小平衡压力对解吸过程吸附常数的影响,探讨瓦斯吸附和解吸过程的可逆性、合理的解吸试验压力条件及其数据处理方法。结果表明:最小平衡压力对解吸过程吸附常数拟合结果影响较大;突出危险型煤在实验室条件下,等温吸附/解吸瓦斯过程有典型的可逆性,解吸过程有滞后性;等温解吸曲线仍服从Langmuir方程;为使解吸试验结果可靠性更高,拟合中应考虑解吸完全时的状态,即解吸平衡压力为0 MPa、残余吸附量为0 mL/g时的数据;解吸试验过程中,最小平衡压力不宜高于0.51 MPa。

关键词: 突出危险煤, 型煤, 等温解吸, 可逆性, 数据处理, 最小平衡压力

Abstract: In order to research characteristics of desorption of methane from outburst-prone coal, experiments were carried out on briquettes made of outburst-prone coal. Influence of the minimum equilibrium pressure on the adsorption constants during desorption experiment was analyzed. Reversibility of methane adsorption and desorption processes, the reasonable pressure conditions for gas isothermal desorption experiment and its data processing method were discussed. The results show that the minimum equilibrium pressure has a great influence on the fitting results of adsorption constants during desorption experiment, that the experiment processes are typically reversible, and there is a delay in the desorption process, that the isothermal desorption curves still obey Langmuir equation, and that to improve the reliability of the experiment results, the data on complete desorption state (desorption equilibrium pressure is 0 MPa and the residual adsorption is 0 mL/g) should be considered in firring, and the minimum equilibrium pressure for desorption experiment should not be higher than 0.51 MPa.

Key words: outburst-prone coal, briquette, isothermal desorption, reversibility, data processing, minimum equilibrium pressure

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