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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Equilibrium of Methane and Carbon Dioxide Hydrates Below the Freezing Point of Water: Literature Review and Modeling

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Author(s):
Heidaryan, Ehsan [1, 2] ; Robustillo Fuentes, Maria Dolores [1] ; Pessoa Filho, Pedro de Alcantara [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Engn Sch, Dept Chem Engn, Caixa Postal 61548, BR-05424970 Sao Paulo, SP - Brazil
[2] Imperial Coll London, Dept Chem Engn, South Kensington Campus, London SW7 2AZ - England
Total Affiliations: 2
Document type: Review article
Source: JOURNAL OF LOW TEMPERATURE PHYSICS; v. 194, n. 1-2, p. 27-45, JAN 2019.
Web of Science Citations: 3
Abstract

This work presents a review of literature data of methane and carbon dioxide hydrate equilibrium at low temperatures. Constants of Arrhenius-type equation accurately determined for the mentioned lines which allow calculating the hydrate equilibrium pressure at any temperature below the quadruple point for both systems contain ice or supercooled water. Through intersection analysis, new accurate quadruple points were determined. Interpretations based on flash calculations by high accurate equations of states shown enthalpies of clathrate formation/dissociation, for equilibrium below quadruple point, lead to the similarity of Clapeyron and Clausius-Clapeyron approaches. Based on equality of equilibrium conditions at the quadruple point, new hydration numbers were calculated. Gamma-phi approach through high accurate equations of states of GERG-2008 and CG for the prediction of VHIw three-phase equilibrium line was evaluated. Commercial packages of Multiflash and PVTsim and open-source codes of CSMGem and CSMHYD were used to model the phenomena. (AU)

FAPESP's process: 14/25740-0 - Study on the formation and dissociation of gas hydrates at high pressure
Grantee:Maria Dolores Robustillo Fuentes
Support type: Scholarships in Brazil - Young Researchers
FAPESP's process: 16/09341-3 - Kinetic study on gas hydrate formation and dissociation
Grantee:Ehsan Heidaryan
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/22589-7 - Assessment of temperature and pressure influence on pH under CO2 saturation conditions and different ions: measurement and modeling applied to gas hydrate kinetics
Grantee:Ehsan Heidaryan
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 14/02140-7 - Study on the formation and dissociation of gas hydrates
Grantee:Maria Dolores Robustillo Fuentes
Support type: Research Grants - Young Investigators Grants