Prediction of Gas Hydrates in CCS Relevant Mixtures with Reference Equations of State

0397292 - ÚT 2014 GB eng C - Conference Paper (international conference)
Jäger, A. - Span, R. - Vinš, Václav - Hrubý, Jan
Prediction of Gas Hydrates in CCS Relevant Mixtures with Reference Equations of State.
16th International Conference on the Properties of Water and Steam. Londýn: British & Irish Association for Properties of Water and Steam (BIAPWS) a Institution of Mechanical Engineers, 2013, s. 50-50.
[International Conference on the Properties of Water and Steam /16./ ICPWS. University of Greenwich, Londýn (GB), 01.09.2013-05.09.2013]
R&D Projects: GA AV ČR(CZ) M100761201
Institutional support: RVO:61388998
Keywords : CCS technologies * gas hydrates * modeling * reference equations of state

The binary mixtures of water and selected pure gases, e.g., carbon dioxide and methane, relevant in CCS technologies, has been investigated in detail. The gas hydrate model of Ballard and Sloan [Fluid Phase Equilib. 194, S. 371–383, 2002] was adapted and modified to accurately predict the properties of selected pure sI hydrate formers. The modified model was fitted to thermal expansion, isothermal compressibility and three-phase hydrate formation data. The compressibility of sI hydrates was analyzed with the help of Murnaghan and Birch-Murnaghan equations. The novelty of this model is that it allows for the prediction of hydrate formation in combination with the most accurate equations available for the fluid and pure solid phases. Consequently, the thermodynamic properties together with hydrate formation conditions in the system H2O + CO2 can be calculated with good accuracy over wide temperature and pressure ranges [Fluid Phase Equilib. 338, S. 100–113, 2013].
Permanent Link: http://hdl.handle.net/11104/0225281