A hyperbranched Poly(amido amine) demulsifier with trimethyl citrate as initial cores and its demulsification performance at ambient temperature

Kuang, Jiazhe; Mi, Yuanzhu; Zhang, Zejun; Ye, Fan; Yuan, Huaikui; Liu, Wangfu; Jiang, Xia; Luo, Yue

doi:10.1016/j.jwpe.2020.101542

Cited by 25 publications

(8 citation statements)

References 38 publications

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“…It is reported that it is conducive to the demulsification when the central core structure of hyperbranched polymers is similar to the emulsifier structure . In our previous work, we also found the law . It is well known that the film-forming material of an oil–water emulsion produced in the process of petroleum exploitation is asphaltene, which is a structure of polycyclic aromatic hydrocarbon.…”

Section: Introductionsupporting

confidence: 56%

“…Hyperbranched poly(amido amine) demulsifiers have been widely reported, but most of these demulsifiers are used in diesel-in-water emulsions or oily wastewater, and a high temperature was needed. ,− In our recent work, the hyperbranched demulsifier with trimethyl citrate as the central core could demulsify only a diesel-in-water emulsion at ambient temperature . The hyperbranched polymer with 1,4-phenylene diamine as the centronucleus could break the oily wastewater, but the aqueous phase was not clear .…”

Section: Introductionmentioning

confidence: 93%

“…15,19−22 In our recent work, the hyperbranched demulsifier with trimethyl citrate as the central core could demulsify only a diesel-in-water emulsion at ambient temperature. 23 The hyperbranched polymer with 1,4-phenylene diamine as the centronucleus could break the oily wastewater, but the aqueous phase was not clear. 24 It is reported that it is conducive to the demulsification when the central core structure of hyperbranched polymers is similar to the emulsifier structure.…”

Section: Introductionmentioning

confidence: 99%

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Hyperbranched Poly(amido amine) Demulsifiers Using Diaminonaphthalene as the Central Core and Their Demulsification Performance in Oil-in-Water and Water-in-Oil Emulsions

Zhang

Feng

Zeng³

et al. 2021

Energy Fuels

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Hyperbranched poly(amido amine) demulsifiers (PNDA-1 or PNDA-2) were synthesized with 1,5-diaminonaphthalene or 1,8-diaminonaphthalene as the central core by an improved "one-pot" method. Fourier transform infrared spectroscopy, nuclear magnetic resonance hydrogen spectra, and thermogravimetric analysis were utilized to explore their structure and thermal stability. It indicated that the two hyperbranched demulsifiers had good thermal stability. To evaluate their demulsification performance, some important factors such as concentration of the demulsifier, types of emulsion, temperature, and settling time were systematically investigated. When 80 mg/L of PNDA-1 or PNDA-2 was used in oily wastewater (O/W emulsion) at room temperature for 4 h, the light transmittance of the separated water reached 73.7 and 59.3%, respectively. The corresponding oil removal rate reached as high as 99.62 and 99.50%, respectively. After demulsifying with the concentration of 80 mg/L at 70 °C for 120 min, the demulsification efficiency (DE) of PNDA-1 and PNDA-2 in the crude oil emulsion (W/O emulsion) reached 92 and 83%, respectively. The DE of PNDA-1 is obviously better than that of PNDA-2 in both O/W and W/O emulsions. The possible demulsification mechanism was discussed by the interfacial tension, zeta potential, and micrograph analysis. The current work provided new hyperbranched demulsifiers, and the discussion on the mechanism also provided some references for the research of a demulsifier.

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Section: Introductionsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Hyperbranched Poly(amido amine) Demulsifiers Using Diaminonaphthalene as the Central Core and Their Demulsification Performance in Oil-in-Water and Water-in-Oil Emulsions

Zhang

Feng

Zeng³

et al. 2021

Energy Fuels

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“…Demulsifier of phenolamine resin type has large molecular weight, low dosage and high dehydration efficiency. However, oil‐water emulsions are difficult to break effectively at room temperature [38] . Room temperature demulsification can simplify the operation process, improve safety, and then achieve the purpose of reducing energy consumption and cost.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Research of Highly Efficient Polyether Demulsifier

2022

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Separation of oil and water has always been a top priority in the oil industry. In this study, bisphenol A phenolamine resin (BPA) was synthesized from bisphenol A, diethylenetriamine and formaldehyde. With KOH as a catalyst, the initiator, ethylene oxide (EO) and propylene oxide (PO) were polycondensed into triblock polyethers with different molecular weights, and then crosslinked to increase the molecular weight. The target product was determined by 1 HNMR and FT-IR, and the synthesis process of triblock polyether demulsifier was optimized by changing the ratio of initiator to head PO, PO to EO and head PO to tail PO. Then, the important influential factors for the demulsification such as the demulsifier concentration, standing time, temperature, pH and Hydrophile-lip-ophile balance (HLB) values were investigated. The results suggestted that the optimal synthesis ratio of BPA type triblock polyether demulsifier was as follows: initiator/PO = 1 : 109, PO/ EO = 2 : 1, head PO/ tail PO = 1 : 3. Under demulsification conditions, the dehydration temperature was 50 °C, the dosage was 75 mg ⋅ L À 1 , pH was 7.6 and HLB was 9.1, and the dehydration rate reached 92.5 % in 90 minutes. Compared with the existing demulsifier, the demulsifier has a lower demulsification temperature and higher demulsification efficiency. Therefore, it can be concluded that the polyether demulsifier has potential application for the crude oil dehydration, and the current work may be helpful to explore the demulsification development.

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“…Furthermore, MKh-GO can be recycled seven times without obvious decrease in e ciency. Kuang et al (Kuang et al 2020) prepared a hyperbranched demulsi er (PTC) with trimethyl citrate as centronucleus. LTA could reach 91.5% with 50 mg/L of PTC at ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Silica Coated Graphene Oxide and Its Demulsifying Performance in Water-in-oil and Oil-in-water Emulsions

Shen

Lei³

et al. 2021

Preprint

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In present study, GO@SiO2 nanocomposites was prepared by coating nanoscale silica onto graphene oxide (GO). The nanocomposites were characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (IF-IR). Additionally, the demulsifying performance of the nanocomposites was investigated by the bottle test method. The results showed that GO@SiO2 nanocomposites had a good demulsifying performance both in oil-in-water (O/W) and water-in-oil (W/O) emulsions. When the concentration of GO@SiO2 was 200 ppm in O/W emulsion, the optimal light transmittance of aqueous phase (LTA) and corresponding oil removal rate (ORR) at room temperature could reach 86.9% and 99.48%, respectively. Also, GO@SiO2 had an excellent salt tolerance under acidic condition. Furthermore, GO@SiO2 nanocomposites also could demulsify the W/O emulsion, and the efficiency at 70℃ could reach 80.5% when the concentration was 400 ppm.

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A hyperbranched Poly(amido amine) demulsifier with trimethyl citrate as initial cores and its demulsification performance at ambient temperature

Cited by 25 publications

References 38 publications

Hyperbranched Poly(amido amine) Demulsifiers Using Diaminonaphthalene as the Central Core and Their Demulsification Performance in Oil-in-Water and Water-in-Oil Emulsions

Hyperbranched Poly(amido amine) Demulsifiers Using Diaminonaphthalene as the Central Core and Their Demulsification Performance in Oil-in-Water and Water-in-Oil Emulsions

Synthesis and Research of Highly Efficient Polyether Demulsifier

Nanoscale Silica Coated Graphene Oxide and Its Demulsifying Performance in Water-in-oil and Oil-in-water Emulsions

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