Hydrate Model for CCS Relevant Gases Compatible with Highly Accurate Equations of State I. Parameter Study and Model Fitting
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F15%3A00449190" target="_blank" >RIV/61388998:_____/15:00449190 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Hydrate Model for CCS Relevant Gases Compatible with Highly Accurate Equations of State I. Parameter Study and Model Fitting
Popis výsledku v původním jazyce
In this study, a gas hydrate model for pure CO2 hydrates was extended to eight hydrate formers relevant in CCS applications. The new model is compatible with highly accurate equations of state (EoS) for other phases than hydrate given in the form of the Helmholtz energy or the Gibbs energy. A detailed analysis of the main model parameters including the specific hydrate volume, the Langmuir constant, and the EoSs employed for other phases was carried out. A new correlation based on the Murnaghan EoS for solids was developed for the volume of gas hydrates. A comprehensive procedure for fitting the hydrate-model parameters was developed. The chemical potential of water for three-phase equilibria with hydrates and various hydrate composition data can be used in a multi-property fit to determine the model parameters. The uncertainties of the experimental data were thoroughly studied in order to define a dimensionless quality criterion for the multi-property fit.
Název v anglickém jazyce
Hydrate Model for CCS Relevant Gases Compatible with Highly Accurate Equations of State I. Parameter Study and Model Fitting
Popis výsledku anglicky
In this study, a gas hydrate model for pure CO2 hydrates was extended to eight hydrate formers relevant in CCS applications. The new model is compatible with highly accurate equations of state (EoS) for other phases than hydrate given in the form of the Helmholtz energy or the Gibbs energy. A detailed analysis of the main model parameters including the specific hydrate volume, the Langmuir constant, and the EoSs employed for other phases was carried out. A new correlation based on the Murnaghan EoS for solids was developed for the volume of gas hydrates. A comprehensive procedure for fitting the hydrate-model parameters was developed. The chemical potential of water for three-phase equilibria with hydrates and various hydrate composition data can be used in a multi-property fit to determine the model parameters. The uncertainties of the experimental data were thoroughly studied in order to define a dimensionless quality criterion for the multi-property fit.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
20303 - Thermodynamics
Návaznosti výsledku
Projekt
<a href="/cs/project/7F14466" target="_blank" >7F14466: Phase behaviour in CCS systems (Fázové přechody v CCS systémech)</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2015
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů