Journal
CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS
Volume 54, Issue 6, Pages 738-742Publisher
SPRINGER
DOI: 10.1007/s10553-019-00981-2
Keywords
gas hydrates; hydrate-formation inhibitors; MeOH; MgC1(2)
Funding
- RF Ministry of Science and Higher Education [14.577.21.0233, PNIER RFMEFI57716X0233]
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Mixtures of magnesium chloride and MeOH were studied as mixed thermodynamic inhibitors of hydrate formation. The equilibrium P,T-conditions for methane hydrate decomposition in the presence of binary solutions H2OMeOH and H2OMgCl2 and ternary solutions H2OMeOHMgCl2 were determined using an isochoric method in a stirred autoclave. Measurements were made at pressures of 3.5-9.5 MPa; MeOH concentrations, 0-25 mass%. The salt content in the aqueous solutions was constant at 5 mass%. The results showed that mixed samples containing MeOH and MgCl2 gave the largest thermodynamic shifts of hydrate formation as compared to samples with MeOH at the same inhibitor mass fraction. The larger thermodynamic shift was related to synergism between the affects of MgCl2 and MeOH in the aqueous solution.
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