Applications of the Peng-Robinson Equation of State
1977; American Chemical Society; Linguagem: Inglês
10.1021/bk-1977-0060.ch008
ISSN1947-5918
AutoresDonald B. Robinson, Ding‐Yu Peng, Heng‐Joo Ng,
Tópico(s)Methane Hydrates and Related Phenomena
ResumoThe recently proposed Peng-Robinson equation of state (1) incorporates the best features of the Soave (2) treatment of the Redlich-Kwong (3) equation into a new model which has some significant advantages over earlier two-parameter equation of state models. The purpose of this contribution is to indicate how the equation performs when it is used for calculating fluid thermodynamic properties for systems of industrial interest. The flexibility of the equation and the generality of the situations for which it can be used to give answers of acceptable reliability at a reasonable cost are illustrated through example calculations of vapor pressure, density, vapor-liquid equilibrium, critical properties, three phase L1L2G equilibrium for systems containing water, and HL1G, HL1L2G, and HL1L2 equilibrium in hydrate forming systems. The equation shows its best advantages in any situation involving liquid density calculations and in situations near the critical region, but it is usually better than other two
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