What components does the saturated vapor pressure of liquefied gas depend on?
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What components does the saturated vapor pressure of liquefied gas depend on?
The saturated vapor pressure of multi-component systems must be determined experimentally; calculations can be carried out using thermodynamic formulas. The liquid phase can be calculated using the electrolyte NRTL model in ASPEN PLUS, while the gas phase is calculated using the ideal gas law
It is related to all components, but most closely related to the lightest component.
It is determined by temperature and the contents of C2 and C3 in the liquefied gas.
It is related to the partial pressure of any component in the liquefied gas. Think about Dalton’s law
Liquefied gas is a mixture; its saturated vapor pressure depends on the composition of its various components
It is determined by the temperature of the medium and the contents of C2, C3, and C4 in the liquefied gas.
The saturated vapor pressure of a mixture is related to its composition; more precisely, it depends on the percentage content of each component, which can be determined through calculation based on those percentages.
Saturation vapor pressures of each component + reasonable mixing rules
Also, liquefied gases are not highly polar, so I personally think it’s unnecessary to use the NRTL equation; the PR equation is sufficient
It is related to the content of the lightest and heaviest components in the liquefied gas.