Til hovedinnhold

Method using a density-energy state function with a reference equation of state for fluid-dynamics simulation of vapor-liquid-solid carbon dioxide

Method using a density-energy state function with a reference equation of state for fluid-dynamics simulation of vapor-liquid-solid carbon dioxide

Kategori
Tidsskriftspublikasjon
Sammendrag
With the advent of CO2 capture and storage (CCS) as an important remedy for reducing atmospheric CO2 emissions, it has become necessary to develop accurate and efficient simulation tools. Among other things, such tools should handle the depressurization from supercritical pressures down to atmospheric conditions. This might involve the formation of solid CO2 (dry ice) as the state passes the triple point. In this work, we propose a dynamic simulation method that handles the dry-ice formation. The method uses the Span--Wagner reference equation of state, with additional relations for thermodynamic properties along the sublimation line. A density-energy state function formulation is employed, which naturally follows from mass and energy conservation. To illustrate the method's capabilities, demanding test cases are considered, both for the depressurization of a vessel and for fluid dynamics in a pipeline, where phase change occurs due to changing boundary conditions.
Oppdragsgiver
  • Norges forskningsråd / 193816
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • SINTEF Energi AS / Gassteknologi
År
2013
Publisert i
Industrial & Engineering Chemistry Research
ISSN
0888-5885
Forlag
American Chemical Society (ACS)
Årgang
52
Hefte nr.
29
Side(r)
9965 - 9978