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Experimental Study of Effect of Nano-graphen Oxide on Methane Hydrate Formation Rate and Storage Capacity

Montazeri, Vahab | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46208 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Baghalha, Morteza; Ramazani, Ahmad; Zarenezhad, Bahman
  7. Abstract:
  8. According to the importance of conversion and transmission of energy, and introduction of hydrate formation process as an alternative method, in this study, the nano-graphene oxide is used to increase the rate if methane gas hydrates formation. The experiments were performed at different concentrations of 30 to 70 ppm and the results were compared with pure water. The effect of temperature and pressure on hydrate formation at temperatures of 1 and 2˚C and pressures of 48 and 53 bar were studied. And it was found that nano-graphene oxide can be used to accelerate the methane hydrates formation. The effect of ultrasonic on methane hydrate formation has been studied that it was found that the improvement of methane hydrate conditions. In separate tests, the effect of different volumes of fluid within the reactor, on hydrate formation was investigated and the optimum volume of 150 cc was obtained. Also, the water that has already been formed hydrate and discrete, was used in hydrate formation again, and found that the induction time reduced greatly and increase the rate of hydrate formation. Finally, the effect of salts in water were examined, it seems that in addition to increasing the surface tension of water, it act as a thermodynamic inhibitor and cause slow process of hydrate formation
  9. Keywords:
  10. Hydrates ; Inhibitor ; Ultrasonic Waves ; Promoter ; Nanographene Oxide ; Induction Time ; Formation Rate

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