SHhydrate equilibria of (methane + water + 2-methylbutane + magnesium chloride), (methane + water + 2,2-dimethylbutane + magnesium chloride), and (methane + water + methylcyclohexane + magnesium chloride)
✍ Scribed by S.-P. Kang; Y.-T. Seo; H. Lee; B.-J. Ryu
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 124 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0021-9614
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✦ Synopsis
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 MgCl 2 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.