Abstract
Understanding the phase behavior and formation kinetics of CO2 hydrate is essential for developing the sequestration process of CO2 into the deep ocean and its feasibility. Three-phase equilibria of solid hydrate, liquid water, and vapor were determined for aqueous mixtures containing CO2 and NaCl/clay to examine the effect of both ocean electrolytes and sediments on hydrate stability. Due to the capillary effect by clay pores and inhibition effect by NaCl the corresponding hydrate formation pressure appeared to be a little higher than that required for simple and pure hydrate at specified temperature. In addition, the hydrate formation kinetics of carbon dioxide in pure water and aqueous NaCl solutions with or without clay mineral were also measured at various conditions. The formation kinetic behavior was found to be strongly influenced by pressure, temperature and electrolyte concentration. A simplified kinetic model having two adjustable parameters was proposed and the estimated results agreed well with the experimental data.
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References
Bishnoi, P. R. and Natarajan, V., “Formation and Decomposition of Gas Hydrate,”Fluid Phase Equilib.,117, 168 (1996).
Chun, M.-K. and Lee, H., “Kinetics of Formation of Carbon Dioxide Clathrate Hydrates,”Korean J. Chem. Eng.,13, 620 (1996).
Dholabhai, P.D., Kalogerakis, N. and Bishnoi, P. R., “Kinetics of Methane Hydrate Formation in Aqueous-electrolyte Solutions,”Can. J. Chem. Eng.,71, 68 (1993).
Englezos, P., “Clathrate Hydrates,”Ind. Eng. Chem. Res.,32, 1251 (1993).
Englezos, P., Kalogerakis, N., Dholabhai, P.D. and Bishnoi, P. R., “Kinetics of Formation of Methane and Ethane Gas Hydrates,”Chem. Eng. Sci.,42(11), 2647 (1987).
Huron, M.-J. and Vidal, J., “New Mixing Rules in Simple Equations of State for Representing Vapor-Liquid Equilibria of Strongly Non-ideal Mixtures,”Fluid Phase Equilib.,3, 255 (1979).
Makogon, Y. F., “Hydrates of Hydrocarbons,” PennWell, Tulsa (1997).
Malegaonkar, M. B., Dholabhai, P.D. and Bishnoi, P. R., “Kinetics of Carbon Dioxide and Methane Hydrate Formation,”Can. J. Chem. Eng.,75, 1090 (1997).
Natarajan, V., Bishnoi, P. R. and Kalogerakis, N., “Induction Phenomena in Gas Hydrate Nucleation,”Chem. Eng. Sci.,49(13), 2075 (1994).
Pitzer, K. S., “Thermodynamics of Electrolytes I. Theoretical Basis and General Equations,”J. Phys. Chem.,77, 268 (1973).
Seo, Y.-T., Kang, S.-P., Lee, H., Lee, C.-S. and Sung, W.-M., “Hydrate Phase Equilibria for Gas Mixtures Containing Carbon Dioxide: A Proof-of-Concept to Carbon Dioxide Recovery from Multi-component Gas Stream,”Korean J. Chem. Eng.,17, 659 (2000).
Shindo, Y., Lund, P.C., Fujioka, Y. and Komiyama, H., “Kinetics of Formation of CO2 Hydrate,”Energy Convers. Mgmt.,34, 1073 (1993).
Sloan, Jr. E. D., “Clathrate Hydrates of Natural Gases,” Marcel Dekker, New York (1998).
Sloan, Jr. E. D. and Fleyfel, F., “A Molecular Mechanism for Gas Hydrate Nucleation from Ice,”AIChE J.,37, 1281 (1991).
Soave, G., “Equilibrium Constants from a Modified Redlich-Kwong Equation of State,”Chem. Eng. Sci.,27, 1197 (1972).
Sung, W.-M., Huh, D.-G., Ryu, B.-J. and Lee, H.-S., “Development and Application of Gas Hydrate Reservoir Simulator Based on Depressurizing Mechanism,”Korean J. Chem. Eng.,17, 344 (2000).
Teng, H., Kinoshita, C. M. and Masutani, S.M., “Hydrate Formation on the Surface of a CO2 Droplet in High-pressure, Low-temperature Water,”Chem. Eng. Sci.,50, 559 (1995).
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This paper is dedicated to Professor Wha Young Lee on the occasion of his retirement from Seoul National University.
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Lee, Jw., Chun, MK., Lee, KM. et al. Phase equilibria and kinetic behavior of co2 hydrate in electrolyte and porous media solutions: application to ocean sequestration of CO2 . Korean J. Chem. Eng. 19, 673–678 (2002). https://doi.org/10.1007/BF02699316
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DOI: https://doi.org/10.1007/BF02699316