Prediction of vapor pressures and saturated volumes with a simple cubic equation of state: Part I. A reliable data base

Document Type

Article

Publication Date

1-1-1986

Abstract

A reliable unbiased data base comprising (i) vapor pressures, Ps, (ii) critical properties, Tc, and Pc, (iii) acentric factors, w, (iv) an improved correlation for critical compressibility, Zc, and (v) saturated liquid volume, Vs, for the Cl to C16 n-alkanes is presented. For vapor pressures, the data base covers a wide range of pressures for each compound, from 0.001 kilopascal through the critical pressure for some of them, with an estimated accuracy of 2 percent from the critical pressure to 0.1 kilopascal, and about 5 percent accuracy below 0.1 kilopascal. Critical properties are screened by plotting Tc and Pc versus the number of carbon atoms. Acentric factors, w, are re-evaluated using the vapor pressure data base. Plotting many experimental Zc data versus w gives a correlation which better represents Zc at high w. A saturated liquid volume data base was generated from the correlation of Hankinson and Thomson (1979), after it was tested with experimental data. This data base of Ps, Tc, Pc w, Zc, and Vs can be used in the development of equations of state (EOS) and the establishment of their limits of applicability, which is demonstrated with the translated Van der Waals (VdW-711) EOS in Part II. © 1986.

Identifier

0022078015 (Scopus)

Publication Title

Fluid Phase Equilibria

External Full Text Location

https://doi.org/10.1016/0378-3812(86)87038-8

ISSN

03783812

First Page

15

Last Page

34

Issue

C

Volume

27

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