Investigation of physical and chemical properties of nonionic demulsifiers based on ethylene and propylene oxides

Authors

  • Олександр Іванович Лазорко President of JSC "UkrTransNafta" Kutuzova Str. , 18/7, Kyiv, 01133, Ukraine, Ukraine
  • Сергій Валерійович Бойченко National Aviation University ave. Komarova 1, Kyiv, 03680, Ukraine, Ukraine
  • Петро Іванович Топільницький National University "Lvivska Polytechnica" Str. St. Bandery, 12, Lviv, 79013, Ukraine, Ukraine
  • Юрій Володимирович Голич JSC "Ukrtatnafta" Svіshtovska str, 3 , Kremenchuk, Poltava reg., Ukraine, Ukraine
  • Вікторія Володимирівна Романчук National University "Lvivska Polytechnica" Str. St. Bandery, 12, Lviv, Ukraine, 79013, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.19204

Keywords:

oil, emulsion, dehydration, desalting, demulsifier, demulsifying ability

Abstract

Water with dissolved inorganic salts is an integral leader of oil in the layer. In the modern conditions of preparation and processing, oil is dehydrated and desalted using the combination of different methods of demulsificaton: mechanical, thermal, electrical. Along with these methods, adding of reagents-demulsifiers to the emulsion is used.

The efficiency of dehydration and desalting is determined by the right choice of demulsifiers. The demulsifier, being adsorbed on the interfacial surface of water drops promotes their dispergation. Nonionic surfactant deemulsifiers – block copolymers of ethylene and propylene oxides, show the highest demulsifying activity.

For the most effective use of nonionic demulsifier, the physicochemical properties (density, viscosity, pour point) of active bases of demulsifiers, their solutions with different molecular weight of block copolymer (M=3200, M=3500 and M=6000) and the dependence of the properties on the content of oxyethylene and oxypropylene groups in the molecule (OE/OP) were studied.

Investigation of the physicochemical properties of block copolymers and aqueous and solvent solutions showed that in all cases with the growth of the ratio of OE/OP and molecular weight density, pour point and viscosity increase.

For further research, namely the determination of demulsifying properties, the samples with molecular weights of 3200, 3500, 6000 were selected. The sample with a molecular weight of 6000 and content of ethylene oxide of 95 % is technologically unsuitable since the solution of this demulsifier, when dissolved in water and solvent freezes to -10 ºC that negatively affects the supply of this demulsifier to the installation in winter. Definition of demulsifying ability of the above samples will be described in the next paper.

Author Biographies

Олександр Іванович Лазорко, President of JSC "UkrTransNafta" Kutuzova Str. , 18/7, Kyiv, 01133, Ukraine

Ph.D.

Сергій Валерійович Бойченко, National Aviation University ave. Komarova 1, Kyiv, 03680, Ukraine

Doctor of Technical Sciences, Professor

Head of  Dpt of Ecology

Петро Іванович Топільницький, National University "Lvivska Polytechnica" Str. St. Bandery, 12, Lviv, 79013, Ukraine

Ph.D., Associate Professor

Department of Chemistry and Technology of Petroleum

Юрій Володимирович Голич, JSC "Ukrtatnafta" Svіshtovska str, 3 , Kremenchuk, Poltava reg., Ukraine

Vice - technology

Вікторія Володимирівна Романчук, National University "Lvivska Polytechnica" Str. St. Bandery, 12, Lviv, Ukraine, 79013

Ph.D., Science Associate Research

Department of  Chemistry and Technology of Petroleum

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Published

2013-12-17

How to Cite

Лазорко, О. І., Бойченко, С. В., Топільницький, П. І., Голич, Ю. В., & Романчук, В. В. (2013). Investigation of physical and chemical properties of nonionic demulsifiers based on ethylene and propylene oxides. Eastern-European Journal of Enterprise Technologies, 6(6(66), 47–51. https://doi.org/10.15587/1729-4061.2013.19204

Issue

Vol. 6 No. 6(66) (2013): Technology of organic and inorganic substanse

Section

Technology organic and inorganic substances

License

Copyright (c) 2014 Олександр Іванович Лазорко, Сергій Валерійович Бойченко, Петро Іванович Топільницький, Юрій Володимирович Голич, Вікторія Володимирівна Романчук

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