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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 1    January 2018

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Effect of montmorillonite on hydrate-based methane separation from mine gas
ZHANG Qiang(张强)1, 2, 3, WU Qiang(吴强)2, 3, ZHANG Hui(张辉)1, ZHANG Bao-yong(张保勇)2, 3, XIA Ting(夏婷)3

1. School of Materials Science and Engineering, Harbin University of Science and Technology,Harbin 150080, China; 2. Department of Safety Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China; 3. National Central Laboratory of Hydrocarbon Gas Transportation Pipeline Safety, Harbin 150022, China

Abstract:Three types of mine gas samples were used in the solutions of tetrahydrofuran (THF), sodium dodecyl sulfate (SDS) and THF-SDS with/without MMT respectively to investigate the effect of montmorillonite (MMT) on separation characteristics of methane recovered from mine gas based on hydrate method. The partition coefficient, separation factor and recovery rate were used to evaluate the effects of MMT, and the selection factor was primarily proposed to define the selectivity of mine gas hydrate in the relative target gases. The experimental results indicate that MMT could improve the following factors including hydration separation factor, the selection factor, the partition coefficient, and the recovery rate. Furthermore, the effect of SDS on the function of MMT is analyzed in the process of hydration separation. Finally, due to the results of the experiment, it is concluded that MMT hydration mechanism explores the effect of MMT enrichment methane from mine gas.

 

Key words: mine gas; hydrate; montmorillonite; separation effect; partition coefficient; separation factor; recovery rate; selection factor

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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