SHhydrate equilibria of (methane + water + 2-methylbutane + magnesium chloride), (methane + water + 2,2-dimethylbutane + magnesium chloride), and (methane + water + methylcyclohexane + magnesium chloride)

Four-phase (SHhydrate + water-rich liquid + hydrocarbon-rich liquid + vapour) structure H (SH) hydrate equilibria of (methane + water + 2-methylbutane + magnesium chloride), (methane + water + 2,2-dimethylbutane + magnesium chloride), and (methane + water + methylcyclohexane + magnesium chloride) were measured in the temperature range from T = 271.55 K to T = 284.65 K, and the pressure range from p = 1.47 MPa to p = 9.75 MPa. The results for three ternary hydrates were found to be in good agreement with those in the literature. The addition of MgCl2exerted a substantial inhibition effect on hydrate formation. The hydrate equilibrium temperature and pressure were predicted by the Redlich–Kwong–Soave equation of state (RKS-EOS) using the Huron–Vidal second-order (MHV2) mixing rule incorporated with the modified UNIFAC model and Aasberg-Petersen et al.’s model. Good agreement was observed between the predicted conditions and experimental results. A small deviation was found as the system pressure increased.
Publisher
Academic Press
Issue Date
2002-04-08
Keywords

hydrate; structure H; phase equilibria; methane; MgCl2

Citation

J. Chem. Thermodynamics, Vol.31, pp.763–772

ISSN
0021-9614
URI
http://hdl.handle.net/10203/9066
Appears in Collection
CBE-Journal Papers(저널논문)
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