Demulsifying water-in-oil emulsions by ethyl cellulose demulsifiers studied using focused beam reflectance measurement

Chen, Zhuqi; Peng, Junxia; Ge, Lingling; Xu, Zhenghe

doi:10.1016/j.ces.2015.03.014

Cited by 42 publications

(14 citation statements)

References 44 publications

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“…This is considerably higher than the maximum value of 10 % recommended by the manufacturer. The fouling index and measures taken to reduce fouling are rarely reported in FBRM studies, so it is challenging to find methods to reduce fouling in the literature. Intermittent removal and washing of the probe may be possible in some applications but was not considered in this case due to the speed with which the probe fouled.…”

Section: Resultsmentioning

confidence: 99%

“…Focused beam reflectance measurement (FBRM) is a measurement technique that allows for in‐situ dynamic measurements of particle or drop sizes in a process. The FBRM probe is used extensively in crystallization processes and a number of processes with a solid dispersed phase, as well as in the study of liquid/liquid dispersions and more recently it has been applied to crude oil systems . The FBRM probe directs a laser beam through a sapphire window into the fluid and collects backscattered light.…”

Section: Introductionmentioning

confidence: 99%

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Effective sapphire repellency treatment to reduce fouling of a focused beam reflectance measurement (FBRM) probe in bituminous systems

et al. 2019

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The use of a focused beam reflectance measurement (FBRM) probe to track the chord length distribution dynamics in a bituminous system can be very challenging. Material coats the sapphire window of the probe and the quality of the data is compromised. The fouling index is a parameter used to assess the quality of the FBRM data. It is provided by the software and is the percentage similarity between two consecutive scans of the instrument, indicating how much of the reading has not changed due to material that is stuck to the optical window. When the FBRM was used in bitumen froth, the fouling index was higher than 90 %. In this work the significant reduction in fouling achieved with a sapphire repellency treatment is presented. The reduction in fouling was sufficient to detect broad trends in the FBRM data that will be used in future studies but was not sufficient to ensure quantitative measurement of the chord length distribution.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective sapphire repellency treatment to reduce fouling of a focused beam reflectance measurement (FBRM) probe in bituminous systems

et al. 2019

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“…The treatment of liquids produced from crude oil production has become a great challenge in the petroleum industry [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. With excessive exploitation, most oilfields have reached the high water cut stage, a circumstance in which crude-oil-in-water emulsion was usually generated in the produced liquids [ 8 , 9 ].…”

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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“…To date, several nonionic demulsifiers have been widely applied. These demulsifiers mainly include ethyl cellulose, polyethyleneimine, and hyperbranched polyamidoamine . Feng et al .…”

Section: Introductionmentioning

confidence: 99%

Demulsification of oil‐in‐water emulsions using hyperbranched poly(amido amine) demulsifiers with 4,4‐diaminodiphenyl methane as initial cores

Kuang

Jiang

et al. 2019

J of Applied Polymer Sci

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Hyperbranched poly(amido amine) demulsifier (PDDM) was synthesized by a modified “one‐pot” method with 4,4‐diaminodiphenyl methane as the central core and ethylenediamine as the interior branches. The structure of the demulsifier was confirmed by proton nuclear magnetic resonance and Fourier transform infrared. The effects of the temperature and PDDM concentration on the demulsification performance were investigated, and PDDM performance was compared to that of the hyperbranched demulsifier with 1,3‐propanediamine as the central core. When the emulsions were treated with the demulsifier concentration of 50 mg L−1 at 60 °C for 120 min, the light transmittance and removed total organic content of the aqueous phase reached 87.4 and 99.72%, respectively. At the optimal demulsification temperature of 60 °C, the surface tension reduction and the critical micelle concentration were 27.38 mN m−1 and 1.30 × 10−3 mol L−1, respectively. The combination of surface tension and interfacial tension measurements and the analysis of micrographs and particles sizes provide evidence for the possible demulsification mechanism. The excellent demulsification performance of the hyperbranched demulsifier indicates that it has great potential for use in the demulsification of oil‐in‐water emulsions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48846.

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Demulsifying water-in-oil emulsions by ethyl cellulose demulsifiers studied using focused beam reflectance measurement

Cited by 42 publications

References 44 publications

Effective sapphire repellency treatment to reduce fouling of a focused beam reflectance measurement (FBRM) probe in bituminous systems

Effective sapphire repellency treatment to reduce fouling of a focused beam reflectance measurement (FBRM) probe in bituminous systems

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

Demulsification of oil‐in‐water emulsions using hyperbranched poly(amido amine) demulsifiers with 4,4‐diaminodiphenyl methane as initial cores

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