Thermodynamic modeling of hydrate formation based on new concepts

A new hydrate model distinguished from the well known van der Waals-Platteeuw-type model has been developed on the basis of a more reasonable description of the mechanism of hydrate formation. The new concepts proposed include: local stability, linked cavity, basic hydrate, and basic hydrate compone...

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Bibliographic Details
Published inFluid phase equilibria Vol. 122; no. 1; pp. 43 - 65
Main Authors Chen, Guang-Jin, Guo, Tian-Min
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 31.07.1996
Elsevier Science
Subjects
Chemical thermodynamics
Chemistry
Exact sciences and technology
General and physical chemistry
General. Theory
Hydrate
Mechanism
Method of calculation
New concepts
Statistical mechanics
Model
Hydrate
Statistical mechanics
Mechanism
New concepts
Method of calculation
Theoretical study
Gas hydrates
Gas mixture
Thermodynamic model
Formation mechanism
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Summary:A new hydrate model distinguished from the well known van der Waals-Platteeuw-type model has been developed on the basis of a more reasonable description of the mechanism of hydrate formation. The new concepts proposed include: local stability, linked cavity, basic hydrate, and basic hydrate component (for mixtures). The corresponding thermodynamic model derived has been extensively tested by prediction of hydrate formation from pure gases and gas mixtures. Comparison with experimental data reported in the literature and predictions based on a typical VDW-P-type model indicate that the new model is capable not only of improving prediction accuracy, but also of explaining some intriguing experimental observations in hydrate formation.
ISSN:0378-3812
1879-0224
DOI:10.1016/0378-3812(96)03032-4