Description of asphaltene polydispersity and precipitation by means of thermodynamic model of self-assembly

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Description of asphaltene polydispersity and precipitation by means of thermodynamic model of self-assembly. / Victorov, Alexey I.; Smirnova, Natalia A.

In: Fluid Phase Equilibria, Vol. 158-160, 1999, p. 471-480.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{00c75326852b48f3a60a57e16d1ff426,

title = "Description of asphaltene polydispersity and precipitation by means of thermodynamic model of self-assembly",

abstract = "A thermodynamic approach describing the precipitation of asphaltene materials from petroleum fluids as a consequence of aggregate break-up is presented. The aggregation equilibrium for asphaltenes and resins is considered along with the bulk-phase equation of state (EOS) to account for the effects of pressure and solvents on the thermodynamic behavior of asphaltene dispersions. Polydispersity of asphaltene aggregates is taken into account. The effect of the resin molecular shape on the size distribution is considered. Relation between the shape factors and elastic constants of the resin shell of the aggregates is given. Precipitation curves for several real crude oil mixtures are calculated and structural characteristics of the aggregates are estimated. Comparison with the experimental data shows that the results are reasonable.",

keywords = "Asphaltene, Method of calculation, Micelles, Model, Polydispersity",

author = "Victorov, {Alexey I.} and Smirnova, {Natalia A.}",

year = "1999",

language = "English",

volume = "158-160",

pages = "471--480",

journal = "Fluid Phase Equilibria",

issn = "0378-3812",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Description of asphaltene polydispersity and precipitation by means of thermodynamic model of self-assembly

AU - Victorov, Alexey I.

AU - Smirnova, Natalia A.

PY - 1999

Y1 - 1999

N2 - A thermodynamic approach describing the precipitation of asphaltene materials from petroleum fluids as a consequence of aggregate break-up is presented. The aggregation equilibrium for asphaltenes and resins is considered along with the bulk-phase equation of state (EOS) to account for the effects of pressure and solvents on the thermodynamic behavior of asphaltene dispersions. Polydispersity of asphaltene aggregates is taken into account. The effect of the resin molecular shape on the size distribution is considered. Relation between the shape factors and elastic constants of the resin shell of the aggregates is given. Precipitation curves for several real crude oil mixtures are calculated and structural characteristics of the aggregates are estimated. Comparison with the experimental data shows that the results are reasonable.

AB - A thermodynamic approach describing the precipitation of asphaltene materials from petroleum fluids as a consequence of aggregate break-up is presented. The aggregation equilibrium for asphaltenes and resins is considered along with the bulk-phase equation of state (EOS) to account for the effects of pressure and solvents on the thermodynamic behavior of asphaltene dispersions. Polydispersity of asphaltene aggregates is taken into account. The effect of the resin molecular shape on the size distribution is considered. Relation between the shape factors and elastic constants of the resin shell of the aggregates is given. Precipitation curves for several real crude oil mixtures are calculated and structural characteristics of the aggregates are estimated. Comparison with the experimental data shows that the results are reasonable.

KW - Asphaltene

KW - Method of calculation

KW - Micelles

KW - Model

KW - Polydispersity

UR - http://www.scopus.com/inward/record.url?scp=0033150690&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033150690

VL - 158-160

SP - 471

EP - 480

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

ER -

ID: 10847379