Header menu link for other important links
X
Kinetics of methane hydrate formation in an aqueous solution of thermodynamic promoters (THF and TBAB) with and without kinetic promoter (SDS)
Deepjyoti Mech, Pawan Gupta,
Published in Elsevier B.V.
2016
Volume: 35
   
Pages: 1519 - 1534
Abstract

Kinetic studies concerning the combination of thermodynamic promoters (tetra-n-butyl ammonium bromide, TBAB and tetrahydrofuran, THF) and kinetic promoters (sodium dodecyl sulphate, SDS) have not yet been investigated in detail for methane hydrate system suitable for natural gas storage and transportation. In this work, experiments were conducted at an initial pressure conditions of 7.5 MPa and 276.15 K for pure water, SDS, TBAB, (TBAB + SDS), THF, (THF + SDS) and (THF + TBAB) aqueous systems for various concentrations. Similarly, at 5.5 MPa and 276.15 K, experiments were conducted for pure water, TBAB, (TBAB + SDS), THF and (THF + SDS) aqueous systems for various concentrations. In addition, at 3.0 MPa and 276.15 K, 0.05 and 0.1 mass fraction of TBAB, 0.005 and 0.01 mass fraction of THF and (0.01 + 0.1) mass fraction of (THF + TBAB) aqueous systems have been considered for the experiments. It has been observed that the methane hydrate formed from pure water with SDS shows higher moles of gas consumption per mole of water as compared to other aqueous systems at higher pressure. Also, the use of SDS with THF shows drastic increase in methane consumption as against semiclathrate hydrate/hydrate formed using TBAB aqueous system and pure water. At lower pressure, of about 3 MPa, gas consumption per mole of water in hydrate has found to enhance for a mixed promoter system containing (THF + TBAB) as compared with the other aqueous systems. Theoretical and actual gas storage capacity calculations has also been performed for various concentrations of THF and TBAB aqueous systems. This study essentially helps to understand the behaviour of TBAB and THF aqueous solution with and without SDS and mixed promoter system of (THF + TBAB) for methane hydrate formation desirable for applications like gas storage, transportation and gas recovery using hydrate-based gas separation method. © 2016 Elsevier B.V.

About the journal
JournalData powered by TypesetJournal of Natural Gas Science and Engineering
PublisherData powered by TypesetElsevier B.V.
Open AccessNo
Concepts (19)
  •  related image
    Enzyme kinetics
  •  related image
    Gases
  •  related image
    Hydration
  •  related image
    Kinetics
  •  related image
    Methane
  •  related image
    Natural gas
  •  related image
    NATURAL GAS TRANSPORTATION
  •  related image
    Organic solvents
  •  related image
    Sodium
  •  related image
    Solutions
  •  related image
    GAS STORAGE CAPACITY
  •  related image
    METHANE HYDRATES
  •  related image
    NATURAL GAS STORAGE
  •  related image
    SEMI-CLATHRATE HYDRATES
  •  related image
    Sodium dodecyl sulphate
  •  related image
    Tetra-hydrofuran
  •  related image
    TETRA-N-BUTYL AMMONIUM BROMIDES
  •  related image
    THERMODYNAMIC PROMOTERS
  •  related image
    Gas hydrates