SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (4): 1112-1119.DOI: 10.1016/j.cjche.2019.12.009

• Chemical Engineering Thermodynamics • Previous Articles     Next Articles

Accelerated methane storage in clathrate hydrates using surfactantstabilized suspension with graphite nanoparticles

Liang Yang1, Xin Wang1, Daoping Liu1, Guomin Cui1, Binlin Dou1, Juan Wang2, Shuqing Hao3   

  1. 1 Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
    2 School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
    3 National Engineering Research Center of Coal Preparation and Purification, China University of Mining & Technology, Xuzhou 221116, China
  • Received:2019-10-31 Revised:2019-12-11 Online:2020-07-27 Published:2020-04-28
  • Contact: Liang Yang, Juan Wang
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (grant numbers 51606125, 51802190, 21978171, 51876130, 51674240), and the Innovation Program of Shanghai Municipal Education Commission (grant number 13ZZ117).

Accelerated methane storage in clathrate hydrates using surfactantstabilized suspension with graphite nanoparticles

Liang Yang1, Xin Wang1, Daoping Liu1, Guomin Cui1, Binlin Dou1, Juan Wang2, Shuqing Hao3   

  1. 1 Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
    2 School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
    3 National Engineering Research Center of Coal Preparation and Purification, China University of Mining & Technology, Xuzhou 221116, China
  • 通讯作者: Liang Yang, Juan Wang
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (grant numbers 51606125, 51802190, 21978171, 51876130, 51674240), and the Innovation Program of Shanghai Municipal Education Commission (grant number 13ZZ117).

Abstract: In this study, enhanced kinetics of methane hydrate formation in the sodium dodecyl sulfate (SDS) solution with different concentrations of suspended graphite nanoparticles (GNPs) were investigated at 6.1-9.0 MPa and 274.15 K. The GNPs with rough surfaces and excellent thermal conductivity not only provided a considerable number of microsites for hydrate nucleation but also facilitated the fast hydrate heat transfer in the suspension system. At a relatively low pressure of 6.1 MPa, the suspension with 0.4 wt% of GNPs exhibited the minimum induction time of 22 min and maximum methane uptake of 126.1 cm3·cm-3. However, the methane storage performances of the suspensions with higher and lower concentrations of GNPs were not satisfactory. At the applied pressure, the temperature increase arising from the hydrate heat in the suspension system with the optimized concentration (0.4 wt%) of GNPs was more significant than that in the traditional SDS solution. Furthermore, compared with those of the system without GNPs, enhanced hydration rate and storage capacity were achieved in the suspensions with GNPs, and the storage capacities were increased by 3.9%-17.0%. The promotion effect of GNPs on gas hydrate formation at low pressure is much more obvious than that at high pressure.

Key words: methane storage, clathrate hydrates, formation kinetics, suspension, graphite nanoparticles

摘要: In this study, enhanced kinetics of methane hydrate formation in the sodium dodecyl sulfate (SDS) solution with different concentrations of suspended graphite nanoparticles (GNPs) were investigated at 6.1-9.0 MPa and 274.15 K. The GNPs with rough surfaces and excellent thermal conductivity not only provided a considerable number of microsites for hydrate nucleation but also facilitated the fast hydrate heat transfer in the suspension system. At a relatively low pressure of 6.1 MPa, the suspension with 0.4 wt% of GNPs exhibited the minimum induction time of 22 min and maximum methane uptake of 126.1 cm3·cm-3. However, the methane storage performances of the suspensions with higher and lower concentrations of GNPs were not satisfactory. At the applied pressure, the temperature increase arising from the hydrate heat in the suspension system with the optimized concentration (0.4 wt%) of GNPs was more significant than that in the traditional SDS solution. Furthermore, compared with those of the system without GNPs, enhanced hydration rate and storage capacity were achieved in the suspensions with GNPs, and the storage capacities were increased by 3.9%-17.0%. The promotion effect of GNPs on gas hydrate formation at low pressure is much more obvious than that at high pressure.

关键词: methane storage, clathrate hydrates, formation kinetics, suspension, graphite nanoparticles