S-H hydrate equilibria of (methane plus water plus 2-methylbutane plus magnesium chloride), (methane plus water plus 2,2-dimethylbutane plus magnesium chloride), and (methane plus water plus methylcyclohexane plus magnesium chloride)

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Four-phase (S-H hydrate + water-rich liquid + hydrocarbon-rich liquid + vapour) structure H (S-H) 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 MgCl2 exerted 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. (C) 1999 Academic Press.
Publisher
ACADEMIC PRESS LTD
Issue Date
1999-06
Language
English
Article Type
Article
Keywords

PHASE-EQUILIBRIA; ELECTROLYTES; PREDICTION; MIXTURES

Citation

JOURNAL OF CHEMICAL THERMODYNAMICS, v.31, no.6, pp.763 - 772

ISSN
0021-9614
URI
http://hdl.handle.net/10203/75256
Appears in Collection
ME-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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