Improved empirical correlation for petroleum fraction composition quantitative prediction

El-hadi, Djamel; Bezzina, Mohamed

doi:10.1016/j.fuel.2004.08.023

Cited by 16 publications

(7 citation statements)

References 8 publications

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“…The chemical structure of crude oil fractions can be calculated using semiempirical correlations of n – d – M –LP, in which available information about the linear programming (LP) of the crude oil composition, refractive index ( n ), molecular weight ( M ), and relative density ( d ) were all taken into account. The n – d – M method can be expressed as the following: − where S is the number of sulfur, C A is the aromatic ring carbons, C R is the cycloalkane ring carbons, and C A %, C R %, C P %, and C N % are the percentage of carbon atoms on the aromatic ring, total ring, cycloalkane ring, and alkyl chain, respectively.…”

Section: Models Theory and Calculationsmentioning

confidence: 99%

Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems

et al. 2017

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An analytical apparatus with improved recirculating and sampling mechanisms was presented to investigate phase behavior of binary and multicomponent systems, which effectively avoided undesirable pressure gradients across the cell and serious disturbance of equilibrium during sampling procedure. Two one-channel magnetic recirculation pumps were designed and built to provide better mass transfer between the coexisting phases. Two six-port switching valves were used for sampling, quantitative fluid injection, and online compositional analysis by gas chromatography. The apparatus was validated by means of isothermal vapor–liquid equilibrium data for CO2 + hexane, and the results were found to be in good agreement with the literature data. High pressure phase equilibria data of CO2 + n-alkanes and CO2 + crude oil + n-alkanes were measured from 353.15 to 373.15 K. Three thermodynamic models of RR, PRSV, and YQE, based on Peng–Robinson and a modified quartic equation of state coupled with various mixing rules, were suggested to represent phase equilibrium. Calculations were compared with experimental values for evaluating the predictive ability of these proposed equations. Analysis of the results confirmed that the YQE model was superior to all the other equations examined and worked well in describing phase behavior of complex real fluids.

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Section: Models Theory and Calculationsmentioning

confidence: 99%

Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems

et al. 2017

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“…Density, refractive index, and FRI at 20°C and atmospheric pressure for distillation cuts from an Algerian crude oil13 .…”

mentioning

confidence: 99%

Density and Refractive Index of Petroleum, Cuts, and Mixtures

et al. 2015

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Densities and refractive indices were measured for native crude oils, distillation cuts, and thermo-and hydrocracked oils at 20°C and for some samples up to 60°C, all at atmospheric pressure. These data as well as pure component and crude oil data from the literature were used to develop correlations between: the refractive index function (FRI) and density; the thermal and FRI expansion coefficients, and; the binary interaction parameters used in mixing rules for the density and FRI of mixtures. The density (or FRI) of the components (or liquids treated as a single component) were both correlated to within 2%. The density (or FRI) of a mixture was fitted also to within 2% using mixing rules with only the known component density (or FRI) at 20°C as the input. The mixture density (or FRI) can be predicted to within 4% using only the correlated component density (or FRI) at 20°C. The correlations have yet to be tested at temperatures above 60°C and pressures above atmospheric.

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“…4. Calculation of molecular weight (MW) by refined Voinov equation depending on the characteristic factor and molecular boiling point of fraction (°С) [17]: …”

Section: Development Of Calculation Methods For Determining the Group mentioning

confidence: 99%

Calculation Method to Determine the Group Composition of Vacuum Distillate with High Content of Saturated Hydrocarbons

et al. 2016

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Abstract. Calculation method to determine the group composition of the heavy fraction of vacuum distillate with high content of saturated hydrocarbons, obtained by vacuum distillation of the residue from the West Siberian oil with subsequent hydrotreating, are given in this research. The method is built on the basis of calculation the physico-chemical characteristics and the group composition of vacuum distillate according to the fractional composition and density considering with high content of saturated hydrocarbons in the fraction. Calculation method allows to determine the content of paraffinic, naphthenic, aromatic hydrocarbons and the resins in vacuum distillate with high accuracy and can be used in refineries for rapid determination of the group composition of vacuum distillate.

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Improved empirical correlation for petroleum fraction composition quantitative prediction

Cited by 16 publications

References 8 publications

Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems

Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems

Density and Refractive Index of Petroleum, Cuts, and Mixtures

Calculation Method to Determine the Group Composition of Vacuum Distillate with High Content of Saturated Hydrocarbons

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Improved empirical correlation for petroleum fraction composition quantitative prediction

Cited by 16 publications

References 8 publications

Measurement and Correlation of High Pressure Phase Equilibria for CO2 + Alkanes and CO2 + Crude Oil Systems

Measurement and Correlation of High Pressure Phase Equilibria for CO2 + Alkanes and CO2 + Crude Oil Systems

Density and Refractive Index of Petroleum, Cuts, and Mixtures

Calculation Method to Determine the Group Composition of Vacuum Distillate with High Content of Saturated Hydrocarbons

Contact Info

Product

Resources

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Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems

Measurement and Correlation of High Pressure Phase Equilibria for CO₂ + Alkanes and CO₂ + Crude Oil Systems