Header menu link for other important links
X
Kinetics of methane hydrate formation in the presence of activated carbon and nano-silica suspensions in pure water
Varun Govindaraj, Deepjyoti Mech, Gaurav Pandey, ,
Published in Elsevier
2015
Volume: 26
   
Pages: 810 - 818
Abstract
New kinetic promoters must be researched for hydrate formation suitable for natural gas storage and transportation to push this technology towards economic feasibility. In this study, the kinetics of the methane hydrate formation have been investigated in the presence of activated carbon and nano-silica (0.5, 1.0 and 2.0wt%) suspensions in an aqueous solution. Experiments were conducted at 8MPa and 275.15K using methane gas as the hydrate former. Particles (activated carbon and nano-silica) were analyzed using scanning electron microscope (SEM) and X-ray diffraction before use. Information on the number of moles of gas consumed during hydrate formation, induction time, rate of hydrate formation, water-to-hydrate and gas-to-hydrate conversion were investigated. It was seen that the kinetics of hydrate formation were more favorable at higher concentrations of particles of activated carbon and nano-silica in the suspension. The effect of the deactivation of activated carbon was also studied and has shown a reversed trend when compared to other particles, behaving as an inhibitor for methane hydrate formation. The rate of hydrate formation was enhanced in the presence of activated carbon and was on the higher side when compared to suspensions of nano-silica. The water-to-hydrate and gas-hydrate conversions observed were in-line with the trends seen in the moles of gas consumed, with activated carbon being more effective than the rest of the particles. The induction time was observed to be reduced in the presence of suspensions of activated carbon when compared to the other hydrate forming systems studied in this work. In general, the results show that both activated carbon and nano-silica have promoting effects on methane hydrate formation kinetics, however, the effect of activated carbon is significantly more pronounced. This study provides a precursor for an improved understanding on the role of particle suspensions for methane hydrate formation suitable for gas storage applications. © 2015 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Natural Gas Science and Engineering
PublisherData powered by TypesetElsevier
Open AccessNo
Concepts (23)
  •  related image
    Activated carbon
  •  related image
    Enzyme kinetics
  •  related image
    Gases
  •  related image
    Hydration
  •  related image
    Ionization of gases
  •  related image
    Kinetics
  •  related image
    Methane
  •  related image
    Natural gas
  •  related image
    NATURAL GAS TRANSPORTATION
  •  related image
    Scanning electron microscopy
  •  related image
    Silica
  •  related image
    Solutions
  •  related image
    Suspensions (fluids)
  •  related image
    X ray diffraction
  •  related image
    CLATHRATE HYDRATE
  •  related image
    ECONOMIC FEASIBILITIES
  •  related image
    HYDRATE FORMATION
  •  related image
    KINETIC PROMOTERS
  •  related image
    METHANE HYDRATES
  •  related image
    NANO SILICA
  •  related image
    NATURAL GAS STORAGE
  •  related image
    PARTICLE SUSPENSIONS
  •  related image
    Gas hydrates