Application of New Modified Poly(ethylene Oxide)-Block-Poly(propylene oxide)-Block-Poly(ethylene oxide) Copolymers as Demulsifier for Petroleum Crude Oil Emulsion

Atta, Ayman M.; Fadda, Ahmed A.; Abdel‐Rahman, Adel A.‐H.; Ismail, Husein S.; Fouad, Rasha R.

doi:10.1080/01932691.2011.584484

Cited by 24 publications

(6 citation statements)

References 19 publications

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“…This is because water dropout/seperation becomes very difficult at low water content, because external pressure of the oil is greater than the internal pressure of the water droplets leading to increased interfacial film firmness, making it difficult for coalescence of water droplets to occur. At increased water content, the external pressure of the water droplets is less the internal pressure of the oil, leading to increased interfacial film thinning thus enhancing coalescence [19,20,21,22]. However, at 10% water content, water seperation for PT-4633 increases as concentration increases, compared to the formulated demulsifiers…”

Section: Effect Of Water Contentmentioning

confidence: 99%

Synthesis and Evaluation of Ethanolamine-Cashew Nut Shell Liquid Products as Crude Oil Emulsion Breakers

Victor-Oji

Chukwu

Akaranta

2020

AJACR

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Cashew Nut Shell Liquid (CNSL), a natural phenolic liquid, was extracted from cashew nut shells using acetone and derivatized using Ethanolamine (EA) and Diethanolamine (DEA) in varying molar ratios via a one-pot process into anacardic acid-based ethanolamine esters and evaluated for use as crude oil emulsion breakers. The CNSL extract was characterized for its physicochemical properties, FTIR spectral analysis for CNSL and the derivatives confirmed its chemical modification. Medium heavy crude and seawater sampled and characterized with ASTM standards were used in producing laboratory-simulated crude oil emulsions at varying crude oil: water mixing ratios of 90:10, 70:30 and 50:50. Performance of the anacardic acid-based CNSL extract and derivatives as demulsifiers were evaluated based on variation in dosage (10 ppm -50 ppm), water content (10%, 30% and 50%), and solvent types (xylene and butanol, BuOH) at 60℃ within a 3-hr period via bottle testing. The performance of effective demulsifier formulations were compared with a commercial demulsifier, Phase Treat-4633, PT-4633, under similar conditions. Results obtained Victor-Oji et al.; AJACR, 4(4): 1-33, 2019; Article no.AJACR.55226 2 showed that water separation increases with demulsifier concentration and emulsion water content respectively, though water seperation varied among the demulsifiers as concentration and water content increased. PT-4633 in butanol achieved efficient water separation with an optimal seperation (100%) observed after 5 minutes at 40 ppm and 50 ppm, 50% and 60℃. In conclusion, the evaluated ethanolamine-CNSL products possess emulsion breaking potential using BuOH as solvent at shorter times. This behaviour may be due to the synergetic effect of BuOH as a solvent, thus, BuOH should be considered as solvent substitute for xylene due to low cost and toxicity levels, unlike xylene which is toxic and expensive. Original Research Article

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Section: Effect Of Water Contentmentioning

confidence: 99%

Synthesis and Evaluation of Ethanolamine-Cashew Nut Shell Liquid Products as Crude Oil Emulsion Breakers

Victor-Oji

Chukwu

Akaranta

2020

AJACR

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“…4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, showed that water separation for the prepared emulsion breakers increases with increasing water content from 10 to 50% for TEA, TED and, TET at 60 ℃ and 3 h. This may be due to the fact that water separation becomes increasingly difficult at low water content, because external pressure of the oil droplet is greater than the internal pressure of the water droplets which leads to increased rigidity of the interfacial film, which makes coalescence of water droplets almost impossible. However, increasing the emulsion water content makes the external pressure of the water droplets lesser than the internal pressure of the oil droplet, leading to the increased thinning of the interfacial film and enhancing coalescence [13,[21][22][23].…”

Section: Effect Of Water Contentmentioning

confidence: 99%

Evaluation of triethanolamine-cashew nutshell liquid derivatives as crude oil emulsion breakers

2021

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Three bio-based crude oil emulsion breakers have been prepared from agricultural waste by chemical treatment of cashew nutshell liquid (CNSL) extract with triethanolamine via a one-pot reaction at 120 ℃. The triethanolamine-ester derivatives were characterized by Fourier Transform–InfraRed spectroscopy. Their effectiveness as crude oil emulsion breakers were investigated experimentally using the bottle test method. The effect of solvent type, water content, and concentration of the emulsion breaker, was used to study the demulsification process and determine their demulsification efficiency at a temperature of 60 ℃ for a contact time of 180 min. A commercial demulsifier, PhaseTreat 4633 (PT-4633) was used as a benchmark. Performance evaluation of the prepared emulsion breakers revealed their effectiveness in descending order as: triethanolamine dianacardate (TED) > triethanolamine trianacardate (TET) > triethanolamine anacardate (TEA). The data reveals that their emulsion breaking efficiency increases with increasing emulsion water content, and concentration. PT-4633 exhibited better demulsification efficiency than the triethanolamine-esters in xylene across the concentration and water content studied. Improved water separation was however observed for the triethanolamine-esters in butanol, as triethanolamine trianacardate (TET) performed better than PT-4633 at 10 ppm to 20 ppm at 30% water content with a water separation of 83.33% and 80% respectively. The evaluated triethanolamine ester derivatives exhibited better emulsion breaking potentials in butanol than xylene at shorter times, which may be due to the synergistic effect of butanol. Therefore, butanol could be used as a sustainable solvent substitute for xylene in demulsifier formulations.

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“…Among these methods, chemical demulsification is widely applied owing to the tunable structure of demulsifier, high efficiency, and convenient operation [ 21 ]. Various chemical demulsifiers have been developed in last few decades, such as block copolymer [ 22 ], polysiloxane [ 23 ], hyperbranched polymer [ 24 ], dendrimer [ 25 ], and ionic liquids [ 26 ]. Chemical demulsifiers are widely used to break water-in-oil emulsions during the early stage of oilfield development.…”

Section: Introductionmentioning

confidence: 99%

Demulsification of Heavy Oil-in-Water Emulsion by a Novel Janus Graphene Oxide Nanosheet: Experiments and Molecular Dynamic Simulations

Wang

et al. 2022

Molecules

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Various nanoparticles have been applied as chemical demulsifiers to separate the crude-oil-in-water emulsion in the petroleum industry, including graphene oxide (GO). In this study, the Janus amphiphilic graphene oxide (JGO) was prepared by asymmetrical chemical modification on one side of the GO surface with n-octylamine. The JGO structure was verified by Fourier-transform infrared spectra (FTIR), transmission electron microscopy (TEM), and contact angle measurements. Compared with GO, JGO showed a superior ability to break the heavy oil-in-water emulsion with a demulsification efficiency reaching up to 98.25% at the optimal concentration (40 mg/L). The effects of pH and temperature on the JGO’s demulsification efficiency were also investigated. Based on the results of interfacial dilatational rheology measurement and molecular dynamic simulation, it was speculated that the intensive interaction between JGO and asphaltenes should be responsible for the excellent demulsification performance of JGO. This work not only provided a potential high-performance demulsifier for the separation of crude-oil-in-water emulsion, but also proposed novel insights to the mechanism of GO-based demulsifiers.

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Application of New Modified Poly(ethylene Oxide)-Block-Poly(propylene oxide)-Block-Poly(ethylene oxide) Copolymers as Demulsifier for Petroleum Crude Oil Emulsion

Cited by 24 publications

References 19 publications

Synthesis and Evaluation of Ethanolamine-Cashew Nut Shell Liquid Products as Crude Oil Emulsion Breakers

Synthesis and Evaluation of Ethanolamine-Cashew Nut Shell Liquid Products as Crude Oil Emulsion Breakers

Evaluation of triethanolamine-cashew nutshell liquid derivatives as crude oil emulsion breakers

Demulsification of Heavy Oil-in-Water Emulsion by a Novel Janus Graphene Oxide Nanosheet: Experiments and Molecular Dynamic Simulations

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