The Effect of SARA Fractions on Viscosity for Five Mexican Vacuum Residues

Peralta-Martínez, M. V.; García-Trujillo, M. E.; Palacios-Lozano, E. M.; Blass-Amador, G.

doi:10.1080/15567030903289825

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…Bitumens display a Newtonian behavior at high temperature, with a viscosity controlled by the SARA fractions contents. Thus, the highest viscosities are observed with high asphaltene and low aromatic contents [14]. Mechanical properties of bitumen also depend on the temperature.…”

Section: Introductionmentioning

confidence: 99%

Rheology-morphology relationships of new polymer-modified bitumen based on thermoplastic polyurethanes (TPU)

Gallu

Méchin

Dalmas

et al. 2020

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Rheology-morphology relationships of new polymer-modified bitumen based on thermoplastic polyurethanes (TPU)

Gallu

Méchin

Dalmas

et al. 2020

Construction and Building Materials

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“…For that reason, we performed a study employing four different SARA analysis techniques: LUKOIL Neftohim Burgas (LNB) method, ASTM D-4124, high-performance liquid chromatography (HPLC), and TLC-Iatroscan to evaluate their consistency. We have also used literature data for 139 vacuum residual oils having a very broad range of variations in the SARA composition and relative density ( d 4 20 ) between 0.938 and 1.12, extracted from 22 literature sources. ,,,− The nonlinear least-squares method was applied to improve the prediction of the vacuum residue aromatic structure content from density since the established relation from our earlier studies , used a second-order polynomial fit. The disadvantage of the second-order polynomial fit is that beyond the maximum density for which this regression is developed, the predicted aromatic structure content starts to decrease with a further increase of the density, which is unrealistic.…”

Section: Introductionmentioning

confidence: 99%

Commercial Investigation of the Ebullated-Bed Vacuum Residue Hydrocracking in the Conversion Range of 55–93%

et al. 2020

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The LUKOIL Neftohim Burgas vacuum residue hydrocracking has increased the vacuum residue conversion from 55 to 93% as a result of a proper feed selection, optimal catalyst condition, and the use of a Mo nanodispersed catalyst. It was found that the feed colloidal instability index estimated from the feed saturates, aromatics, resins, and asphaltenes (SARA) data negatively correlated with the conversion. Correlations based on the use of the nonlinear least-squares method, which relates the density to the aromatic structure contents for the straight run and hydrocracked vacuum residues, were developed. Intercriteria analysis was applied to evaluate the relations between the different properties of the straight run and the hydrocracked vacuum residual oils. The density of the hydrocracked vacuum residue measured by dilution with toluene was found to strongly correlate with the conversion, Conradson carbon content, softening point, and Fraasss breaking point.

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“…For example, a viscosity increase is often observed as asphaltene content increases and saturated hydrocarbon concentration decreases (Peralta-Martínez et al, 2011). Severely biodegraded oils are generally enriched in polar compounds and depleted in saturated hydrocarbon compounds.…”

Section: Resultsmentioning

confidence: 99%