Formation of Organic Deposits in Model Petroleum Systems

The formation of organic deposits in model petroleum-containing systems of various compositions has been studied. Introduction of asphaltene–resin substances into a model paraffin system reduces the amount of precipitated wax deposit to 40 wt %; significantly changes the ratio of liquid and solid hy...

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Published in:Petroleum chemistry 2020-06, Vol.60 (6), p.693-698
Main Authors: Yudina, N. V., Loskutova, Yu. V.
Format: Article
Language:English
Subjects:
Alkanes
Asphaltenes
Chemistry
Chemistry and Materials Science
Composition
Crystal lattices
Deposits
Industrial Chemistry/Chemical Engineering
Liquid phases
Paraffins
Shear stress
Weight reduction
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description The formation of organic deposits in model petroleum-containing systems of various compositions has been studied. Introduction of asphaltene–resin substances into a model paraffin system reduces the amount of precipitated wax deposit to 40 wt %; significantly changes the ratio of liquid and solid hydrocarbons in the n -alkane composition of the deposits, shifting the distribution maximum towards a lower molecular weight; and substantially reduces the mechanical strength. In the model paraffin system in the presence of resins and asphaltenes, which contain a greater amount of condensed aromatic structures and a smaller amount of paraffin structures, a precipitate is formed with an increased proportion of the liquid phase. The deposits are characterized by lower strength of the crystal lattice and, hence, a decreased value of ultimate shear stress.
doi_str_mv 10.1134/S0965544120060110
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subjects Alkanes
Asphaltenes
Chemistry
Chemistry and Materials Science
Composition
Crystal lattices
Deposits
Industrial Chemistry/Chemical Engineering
Liquid phases
Paraffins
Shear stress
Weight reduction
title Formation of Organic Deposits in Model Petroleum Systems
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