Vapour pressures and saturated-liquid volumes for heavy fossil fuel fractions from a perturbed hard-chain equation of state
✍ Scribed by Achim Wilhelm; John M. Prausnitz
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 766 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
A semitheoretical equation of state has been used to correlate residual thermodynamic properties of heavy hydrocarbons. The correlation requires three characteristic molecular parameters obtained from liquid density and vapour pressure data. These parameters are presented for 61 hydrocarbons with molecular weights up to 560 and are correlated with molecular weight and structural features. The correlation is extended to narrow-boiling fractions. Molecular parameters for such fractions are obtained from experimental characterization data (molecular weight, aromaticity, naphthenicity and number of methyl groups per molecule). Calculated vapour pressures and liquid densities are in reasonable agreement with new experimental results obtained from Belridge crude oil.