Emulsifying behavior between oil and water of flowback fluids from acidizing oil wells based on high-voltage electric field oil–water separation technology

Li, Dongju; Gao, Bingkun; Cui, Xiangyu

doi:10.1039/d2nj02306g

Cited by 6 publications

(2 citation statements)

References 18 publications

(19 reference statements)

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“…Meanwhile, in the process of oil production, efficient oil–water separation helps to improve the purity and quality of oil . Traditional oil–water separation methods mainly rely on differences in the physical properties of oil and water (density and solubility), such as centrifugal separation, gravity separation, filtration, adsorption, flotation, thermal separation, and electrical separation . However, for the separation of emulsions, these traditional oil–water separation methods, which are mainly based on density differences, are no longer effective because the oil droplets are fine and stabilized in the water by the emulsifier. , In addition, in the actual separation process, not all oil has a lower density than water, and some oil has a higher density than water, which leads to the limited effectiveness of gravity-dominated separation methods.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Lin,

Zhang,

Chen

et al. 2024

Langmuir

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To achieve the green, sustainable, and controllable recovery of oil−water resources and to address the limited functionality of single superwet materials in oil− water separation, this study reports a multifunctional oil−water separation strategy by compositing the underwater superoleophobic and underoil superhydrophobic materials (HS). The underwater superoleophobic quartz sands with an oil contact angle of 152.68°were prepared by adjusting the particle size. This material demonstrated a water flux of 4688 L m −2 h −1 and a low-density oil and water mixture separation efficiency of 98.6%, which remained above 97.9% over 50 cycles. It was effective in separating oil-in-water emulsions with a separation efficiency of >99%. For HS, quartz sands were modified with dodecyltrimethoxysilane. The optimized HS-4 exhibited superhydrophobic properties with a water contact angle of 157.06°. It achieved an oil flux of 5775 L m −2 h −1 and a water and dichloromethane mixture separation efficiency of 98.4%. Additionally, they exhibited significant potential in the separation of water-inoil emulsions. Furthermore, by placing the underwater superoleophobic and underoil superhydrophobic units at the bottom of the filter, we achieved cyclic separation of high-density oil and water mixtures, low-density oil and water mixtures, water-in-oil emulsions, and oil-in-water emulsions. The separation efficiency consistently exceeded 96.5% over 10 cycles. In addition, the oil−water separation mechanism of underwater oleophobic and underoil hydrophobic materials was demonstrated by the relative concentration distribution of water and oil with molecular dynamics simulations. This intelligent oil− water separation method marks a significant advancement in the sustainable separation of diverse oil−water mixtures.

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Section: Introductionmentioning

confidence: 99%

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Lin,

Zhang,

Chen

et al. 2024

Langmuir

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“…Developing an efficient, economical, and environmentally friendly oil-water separation technology is significant to build an environment-friendly society [3]. Compared with traditional industrial methods such as the gravity method [4,5], a centrifugal method [6][7][8], an air flotation method [9,10], an electric field method [11], and coagulation technique, the filtering oil-water separation technology based on the unique wettability of the surface, has become a hotbed of scientific study due to its benefits of high separation efficiency, cheap cost, and recyclability. It has potential application value in many aspects, such as oily wastewater treatment, oil exploitation, and oil spill control.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic/oleophobic Copper Mesh for Oil-water Separation

Zhao,

Shang,

et al. 2023

J. Phys.: Conf. Ser.

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Functional materials based on the special wettability of the surface have always been the focus of scientific research, which are of great significance in the treatment of oily sewage and oil spill cleaning. The easily achievable hydrophobic/oleophilic and hydrophilic/underwater oleophobic surfaces cannot fully meet the needs of oil-water separation, while the ideal hydrophilic/oleophobic separation nets are less studied due to their “abnormal” wetting properties. In this study, a kind of hydrophilic/oleophobic copper mesh was prepared, which has hydrophobic-hydrophilic switching/oleophobic wetting properties, can separate immiscible oil and water, and has good recycling, water resistance, Frictional stability.

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Isolation of interfacially active molecules from Brazilian oils and characterization by high resolution analytical techniques

Romão

Barros

Madeira

et al. 2023

Braz. J. Chem. Eng.

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Emulsifying behavior between oil and water of flowback fluids from acidizing oil wells based on high-voltage electric field oil–water separation technology

Abstract: In this paper, the high-speed emulsifier and electric dehydrator were used to study the main factors affecting the emulsifying stability of flowback fluids from acidizing oil wells in Daqing Oilfield...

Cited by 6 publications

References 18 publications

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Hydrophilic/oleophobic Copper Mesh for Oil-water Separation

Isolation of interfacially active molecules from Brazilian oils and characterization by high resolution analytical techniques

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