Formation of concentrated emulsions in heavy oil.
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| Title: | Formation of concentrated emulsions in heavy oil. |
|---|---|
| Authors: | Malkin, A.Ya.1 alex_malkin@mail.ru, Zadymova, N.M.2, Skvortsova, Z.N.2, Traskine, V.Yu.2, Kulichikhin, V.G.1,2 |
| Source: | Colloids & Surfaces A: Physicochemical & Engineering Aspects. Sep2016, Vol. 504, p343-349. 7p. |
| Subjects: | Heavy oil, Addition reactions, Aqueous solutions, Surface active agents, Hydrophilic compounds, Hydrophobic surfaces |
| Abstract: | The addition of aqueous solutions of some surfactants with high hydrophilic-lipophilic balance (HLB = 11–40) into heavy oil leads to the formation of concentrated oil-in-water emulsions. The basic oil sample is a Newtonian fluid in a wide temperature range and its viscosity is 4 Pa s at room temperature, which is too high for its transportation. So, the goal of the work was the creation of emulsions with an acceptable level of viscosity. The morphology and rheological properties of the formed emulsions have been studied. All the emulsions demonstrate visco-plastic behavior. Their yield stress and apparent viscosity at high shear stresses are determined by the HLB of the surfactant used, the regime of mixing and the content of water in the emulsion. The higher the HLB value, the more effective is its influence on the rheology of the emulsions. It was found that the optimal properties are provided by creating multiple emulsions of the water/oil/water type. In these emulsions, thin channels of aqueous phase are the outer continuous medium and the dispersed phase is the ultra-disperse invert emulsion, existing as rather large droplets and fine inclusions in the aqueous channels. The values of the yield stress in the best obtained emulsions lie in the range from 0.6 to 22 Pa and the apparent viscosity at high stresses was reduced by not less than 10 times (in the limiting case by 50 times) in comparison with the crude oil, wherein the content of water as a continuous phase can be reduced to 20%. [ABSTRACT FROM AUTHOR] |
| Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 116521589 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Formation of concentrated emulsions in heavy oil. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Malkin%2C+A%2EYa%2E%22">Malkin, A.Ya.</searchLink><relatesTo>1</relatesTo><i> alex_malkin@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Zadymova%2C+N%2EM%2E%22">Zadymova, N.M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Skvortsova%2C+Z%2EN%2E%22">Skvortsova, Z.N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Traskine%2C+V%2EYu%2E%22">Traskine, V.Yu.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kulichikhin%2C+V%2EG%2E%22">Kulichikhin, V.G.</searchLink><relatesTo>1,2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Colloids+%26+Surfaces+A%3A+Physicochemical+%26+Engineering+Aspects%22">Colloids & Surfaces A: Physicochemical & Engineering Aspects</searchLink>. Sep2016, Vol. 504, p343-349. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heavy+oil%22">Heavy oil</searchLink><br /><searchLink fieldCode="DE" term="%22Addition+reactions%22">Addition reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Aqueous+solutions%22">Aqueous solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrophilic+compounds%22">Hydrophilic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrophobic+surfaces%22">Hydrophobic surfaces</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The addition of aqueous solutions of some surfactants with high hydrophilic-lipophilic balance (HLB = 11–40) into heavy oil leads to the formation of concentrated oil-in-water emulsions. The basic oil sample is a Newtonian fluid in a wide temperature range and its viscosity is 4 Pa s at room temperature, which is too high for its transportation. So, the goal of the work was the creation of emulsions with an acceptable level of viscosity. The morphology and rheological properties of the formed emulsions have been studied. All the emulsions demonstrate visco-plastic behavior. Their yield stress and apparent viscosity at high shear stresses are determined by the HLB of the surfactant used, the regime of mixing and the content of water in the emulsion. The higher the HLB value, the more effective is its influence on the rheology of the emulsions. It was found that the optimal properties are provided by creating multiple emulsions of the water/oil/water type. In these emulsions, thin channels of aqueous phase are the outer continuous medium and the dispersed phase is the ultra-disperse invert emulsion, existing as rather large droplets and fine inclusions in the aqueous channels. The values of the yield stress in the best obtained emulsions lie in the range from 0.6 to 22 Pa and the apparent viscosity at high stresses was reduced by not less than 10 times (in the limiting case by 50 times) in comparison with the crude oil, wherein the content of water as a continuous phase can be reduced to 20%. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.colsurfa.2016.05.094 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 343 Subjects: – SubjectFull: Heavy oil Type: general – SubjectFull: Addition reactions Type: general – SubjectFull: Aqueous solutions Type: general – SubjectFull: Surface active agents Type: general – SubjectFull: Hydrophilic compounds Type: general – SubjectFull: Hydrophobic surfaces Type: general Titles: – TitleFull: Formation of concentrated emulsions in heavy oil. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Malkin, A.Ya. – PersonEntity: Name: NameFull: Zadymova, N.M. – PersonEntity: Name: NameFull: Skvortsova, Z.N. – PersonEntity: Name: NameFull: Traskine, V.Yu. – PersonEntity: Name: NameFull: Kulichikhin, V.G. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 09 Text: Sep2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 09277757 Numbering: – Type: volume Value: 504 Titles: – TitleFull: Colloids & Surfaces A: Physicochemical & Engineering Aspects Type: main |
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