Synthesis of fluorinated silicon-containing amphiphilic copolymer and its demulsification performance

Zhang, Yue; Xue, Dan; Li, Yi Fei; Zhao, Min; Bai, Xue; Zhang, Jian; Hao, Jun Sheng; Zhao, Yongxiang

doi:10.1016/j.colsurfa.2018.09.025

Cited by 24 publications

(9 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This adsorption will affect the stability of the interface. In this study, a positive effect of the high interfacial activity on the demulsification performance was observed, in agreement with other reports; , however, a weak or negative effect has also been reported. ,, …”

Section: Resultssupporting

confidence: 93%

“…The interfacial activity of a demulsifier represents its adsorption capacity at the oil–water interface. − Figure e shows that IFT decreases rapidly with an increase in demulsifier concentration, followed by the appearance of a plateau. With an increase in demulsifier concentration, more demulsifier molecules adsorb at the oil–water interface, decreasing the IFT.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, a positive effect of the high interfacial activity on the demulsification performance was observed, in agreement with other reports; 3,36 however, a weak or negative effect has also been reported. 31,37,38 Moreover, the hydrophilicity of the demulsifier is also an important factor for demulsification performance. As shown in Figure 2c, increased RSN is beneficial for improving the demulsification performance.…”

Section: Interfacial Tension (Ift)mentioning

confidence: 99%

See 2 more Smart Citations

Proanthocyanidin-Based Polyether Demulsifiers for the Treatment of Aging Oil Emulsions

Chen

et al. 2020

Energy Fuels

View full text Add to dashboard Cite

To separate the aging oil emulsions on offshore platforms, a series of polyether demulsifiers based on proanthocyanidins were synthesized, and a dehydration ratio of 94.4% can be obtained at a dosage of 100 mg/L and 70 °C within 120 min. The exceptional performance is due to the multibranched structure and multiaromatic core of the demulsifier, as revealed in our previous work. Meanwhile, the moderate molecular weight, high hydrophilicity, and high interfacial activity of the demulsifier also improve its performance. To understand the distribution of the demulsifier molecules after demulsification and elucidate the demulsification mechanism, partition coefficient (K pc) measurements were performed using the fluorescence labeling method. The results demonstrate that the demulsifier molecules are mainly present in the oil phase and the high K pc values favor demulsification. Furthermore, a high dehydration ratio can be achieved when the demulsifier has a strong ability to reduce the elastic modulus of aging oil emulsions, as illustrated by the rheological results. To confirm the practical applicability of the demulsifiers on offshore platforms, pilot production on a ton scale was carried out and the pilot product was found to exhibit excellent performance that was essentially the same as that of the laboratory sample.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Interfacial Tension (Ift)mentioning

confidence: 99%

See 1 more Smart Citation

Proanthocyanidin-Based Polyether Demulsifiers for the Treatment of Aging Oil Emulsions

Chen

et al. 2020

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…[18][19][20][21] In comparison to other methods, chemical demulsification is more convenient and effective. [22] As of now, there are many types of chemical demulsifiers, such as polyether, [23] ionic liquids, [24] siloxane, [25] nano composites, [26] hyperbranched polymer, [27] biode-mulsifiers, [28] and magnetic nanoparticles. [29] These synthetic demulsifiers can accelerate the aggregation of oil droplets by destroying the original interfacial film, so that the oil and water are separated to achieve the effect of demulsification.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Research of Highly Efficient Polyether Demulsifier

2022

View full text Add to dashboard Cite

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.

show abstract

“…[5][6][7][8] At present, many studies have been carried out on conventional demulsification methods, including the thermal method, electrical method, and chemical demulsification method. 9 Thermal and electrical methods sometimes also require to add the efficient chemical demulsifier to assist in demulsification, such as polyether demulsifier, 10 nonpolyether demulsifier, 11 siloxane demulsifier, 12 ionic liquid demulsifier, 13 cellulose polymer demulsifier, 14 hyperbranched polymer demulsifiers, 15 and composite demulsifier obtained by compounding two or more kinds of demulsifiers. 16 However, these demulsifiers have limited efficiency to cope with O/W emulsions with average oil droplet sizes of approximately 2 μm or less.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnetically responsive hyperbranched polyamidoamine based on the graphene oxide: Application as demulsifier for oil‐in‐water emulsions

et al. 2019

View full text Add to dashboard Cite

Summary In this study, a novel, highly efficient, and magnetically responsive demulsifier, namely, Fe3O4@hyperbranched polyamidoamine‐graphene oxide (MKh‐GO), was synthesized. First, Fe3O4 was synthesized, and Fe3O4 was wrapped in hyperbranched polyamidoamine (h‐PAMAM) by γ‐(methacryloyl oxide) propyltrimethoxysilane (kh570), and MKh‐GO was synthesized by condensation reaction. The chemical structures and morphologies of the samples were characterized by Fourier transform‐infrared spectroscopy (FTIR) and transmission electron microscope (TEM). The magnetic response of the sample was tested by vibrating sample magnetometer (VSM). The MKh‐GO was used to separate crude oil in water emulsion; the effects of MKh‐GO dosage, temperature, and pH value on the demulsifying efficiency were investigated. Possible demulsification mechanisms were summarized. The results show that MKh‐GO is successfully synthesized, and MKh‐GO exhibits excellent demulsification performance; MKh‐GO is recycled seven times, and the demulsification efficiency is 97%.

show abstract

Synthesis of fluorinated silicon-containing amphiphilic copolymer and its demulsification performance

Cited by 24 publications

References 20 publications

Proanthocyanidin-Based Polyether Demulsifiers for the Treatment of Aging Oil Emulsions

Proanthocyanidin-Based Polyether Demulsifiers for the Treatment of Aging Oil Emulsions

Synthesis and Research of Highly Efficient Polyether Demulsifier

Synthesis of magnetically responsive hyperbranched polyamidoamine based on the graphene oxide: Application as demulsifier for oil‐in‐water emulsions

Contact Info

Product

Resources

About