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Wu Z, Yang Q, Cui C, Wu Y, Xie Y, Wang H. Aromatic poly (amino acids) as an effective low-temperature demulsifier for treating crude oil-in-water emulsions. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134608. [PMID: 38754229 DOI: 10.1016/j.jhazmat.2024.134608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/08/2024] [Accepted: 05/11/2024] [Indexed: 05/18/2024]
Abstract
Amphiphilic aromatic poly (amino acids) polymers were designed as biodegradability demulsifiers with higher aromaticity, stronger polarity, and side chain-like combs. The effects of demulsifier dosage, structural characteristics and emulsion properties such as pH, salinity, and oil content on the demulsification efficiency were investigated. The results show that the poly (L-glutamic-benzyl ester)-block-poly (L-phenylalanine) (PBLG15-b-PPA15) as the demulsifier can remove more than 99.97% of the oil in a 5.0 wt% oil-in-water (O/W) emulsion at room temperature within 2 min. The poly (L-tyrosine)-block-poly (L-phenylalanine) (PTyr15-b-PPA15) with environmental durability demonstrates high effectiveness, universality, and demulsification speed. It achieves a remarkable demulsification efficiency of up to 99.99% for a 20.0 wt% O/W emulsion at room temperature. The demulsification mechanism indicates that demulsifiers have sufficient interfacial activity can quickly migrate to the oil-water interface after being added to the emulsions. Additionally, when demulsifiers are present in a continuous phase in the molecular form, their "teeth" side chains are beneficial for increasing coalescence and flocculation capacities. Furthermore, according to the Density Functional Theory (DFT) calculations, enhancing the intermolecular interactions between demulsifiers and the primary native surfactants that form an oil-water interfacial film is a more efficient approach to reducing demulsification temperature and improving demulsification efficiency and rate.
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Affiliation(s)
- Zhuyu Wu
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China
| | - Qiliang Yang
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China
| | - Can Cui
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China
| | - Yiyi Wu
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China.
| | - Yadian Xie
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China
| | - Huanjiang Wang
- School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China.
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2
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Gao J, Zhu J, Gao Q, Zhao X, Yu L, Zhao J, Jia F, Wu Y, Li L, Guo J. Mechanism study of aging oil demulsification and dehydration under ultrasonic irradiation. ULTRASONICS SONOCHEMISTRY 2024; 105:106859. [PMID: 38552298 PMCID: PMC10995870 DOI: 10.1016/j.ultsonch.2024.106859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/19/2024] [Accepted: 03/25/2024] [Indexed: 04/08/2024]
Abstract
With the tertiary oil recovery in the oilfield, the content of aging oil emulsion with high water content and complex components has become more prevalent, so it is crucial for aging oil to break the emulsification. In this paper, the experimental laws of water content are explored under the conditions of different transducer input powers through the ultrasonic reforming of aging oil, and the microscopic topography, particle size, components, etc. of oil samples before and after the irradiation of ultrasound are characterized through the microscopic analysis, particle size analysis and component analysis and other ways. The results show that the oil samples achieve the effect of demulsification and dehydration in the presence of ultrasonic cavitation effect, with a maximum dehydration rate of 98.24 %, and that the dehydration rate follows an "M-type" trend with the increase of power. The results of microscopic and particle size analyses demonstrate that ultrasonic irradiation destabilizes the oil-water interfacial membrane, and causes droplets of different sizes to collide, agglomerate, and settle. It was also observed that the droplets of the emulsion system are more evenly distributed and the intervals are increased. Furthermore, we hypothesize that ultrasound may be less irreversible in demulsification and dehydration of aging oil.
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Affiliation(s)
- Jinbiao Gao
- Earth Science College, Northeast Petroleum University, Daqing 163318, China; National Key Laboratory of Continental Shale Oil, Northeast Petroleum University, Daqing 163318, China
| | - Jianjian Zhu
- No.5 Oil Production Plant of Daqing Oilfield Co., Ltd., Daqing 163513, China
| | - Qinghe Gao
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163712, China.
| | - Xiaoqing Zhao
- Earth Science College, Northeast Petroleum University, Daqing 163318, China; National Key Laboratory of Continental Shale Oil, Northeast Petroleum University, Daqing 163318, China.
| | - Lanlan Yu
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China
| | - Jian Zhao
- Daqing Geophysical Exploration Company of BGP, CNPC, Daqing 163357, China
| | - Fangchao Jia
- Daqing Geophysical Exploration Company of BGP, CNPC, Daqing 163357, China
| | - Yunlong Wu
- No.5 Oil Production Plant of Daqing Oilfield Co., Ltd., Daqing 163513, China
| | - Limin Li
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163712, China
| | - Jiashuai Guo
- Earth Science College, Northeast Petroleum University, Daqing 163318, China
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3
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Sun C, Ma H, Yu F, Xia S. Preparation and evaluation of hydroxyethyl cellulose-based functional polymer for highly efficient utilization of heavy oil under the harsh reservoir environments. Int J Biol Macromol 2024; 259:128972. [PMID: 38151086 DOI: 10.1016/j.ijbiomac.2023.128972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/07/2023] [Accepted: 12/20/2023] [Indexed: 12/29/2023]
Abstract
Emulsification viscosity reduction and subsequent demulsification are effective strategies to improve the utilization rate of heavy oil. However, traditional surfactants are challenged by unsatisfactory salt tolerance, inadequate stability in emulsification, difficulty in demulsification and pollution problem of oily wastewater discharge. To realize the feasibility and environment-friendliness of heavy oil utilization in the harsh reservoir environments, we designed a functional polymer and conducted a comprehensive evaluation using heavy oil samples from Chenping oil well in Shengli Oilfield. It was synthesized by grafting two hydrophobic monomers, lauryl methacrylate (LMA) and N, N-Diethylaminomethyl methacrylate (DEAEMA), onto the hydrophilia hydroxyethyl cellulose (HEC) by free-radical polymerization. The viscosity reduction rate can reach 99.57 % even under the high salinity of 26,050 mg/L. The stable oil-in-water (O/W) emulsion can be maintained for >48 h, satisfying the actual requirements for heavy oil recovery. Moreover, the emulsion can be completely demulsified in a CO2 atmosphere within 30 min, suggesting its satisfactory demulsification performance. Our study achieved the one-step transformation of heavy oil emulsion between emulsification and demulsification, which provides a green bio-based material and an ingenious strategy for enhanced oil recovery and other chemical engineering applications including oil/water separation.
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Affiliation(s)
- Caixia Sun
- China Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Hao Ma
- China Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Fuce Yu
- China Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Shuqian Xia
- China Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
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4
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Jiang S, Li Q, Xu B, Zou T, Zhang Y, Ping W, Ma Q. Synthesis and Application of a Novel Multi-Branched Block Polyether Low-Temperature Demulsifier. Molecules 2023; 28:8109. [PMID: 38138594 PMCID: PMC10745829 DOI: 10.3390/molecules28248109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
In this paper, a low-temperature thick oil demulsifier with high polarity was prepared by introducing ethylene oxide, propylene oxide block, and butylene oxide using m-diphenol as a starting agent. The main reasons for the difficulty involved in the low-temperature emulsification of extractive fluids were explained by analyzing the synthetic influencing factors and infrared spectra of the star comb polymer (PR-D2) and by analyzing the four fractions, interfacial energies, and zeta potentials of crude oils from the Chun and Gao fields. The effects of PR-D2 surfactant on the emulsification performance of crude oil recovery fluids were investigated via indoor and field experiments. The experimental results indicate that the optimal synthesis conditions for this emulsion breaker are as follows: a quality ratio of ionic reaction intermediates and meso-diphenol of R = 10:1; 1 g of the initiator; a polymerization temperature of 80 °C; and a reaction time of 8 h. Colloidal asphaltenes in the crude oil were the main factor hindering the low-temperature demulsification of the Gao oilfield's extractive fluids, and the reason for the demulsification difficulty of the extractive fluids in the Chun oilfield is that the temperature of demulsification is lower than the wax precipitation point. The demulsification rate of the Chun oilfield's extractive fluids reached more than 98% when the PR-D2 concentration reached 150 mg/L at 43 °C. The demulsification rate of the Gao oilfield's extractive fluids reached more than 98% at a PR-D2 concentration of 150 mg/L at 65 °C. The field experiments show that the Chun oilfield's extractive fluids can still demulsify after the temperature is reduced to 43 °C in winter. The emulsification temperature of the Gao oilfield's extractive fluids was reduced from 73 °C to 68 °C, with an excellent demulsification effect.
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Affiliation(s)
- Shaohui Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum East China, Qingdao 266580, China;
| | - Qingsong Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum East China, Qingdao 266580, China;
| | - Botao Xu
- China Oilfield Services Limited, Tianjin 300450, China;
| | - Tao Zou
- Huabei Oilfield Company, China National Petroleum Corporation, Renqiu 062552, China;
| | - Yan Zhang
- Drilling & Production Engineering Technology Research Institute, CNPC Chuanqing Drilling Engineering Company Limited, Xi’an 710018, China;
| | - Wei Ping
- Fujian Provincial Company of National Petroleum and Natural Gas Pipeline Network Group, Fuzhou 350000, China;
| | - Qiang Ma
- CNPC Chuanqing Drilling Engineering Company Limited, Chengdu 610051, China;
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5
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Li X, Lin W, Petrescu FIT, Li J, Wang L, Zhu H, Wang H, Shi G. A Solar-Driven Oil-Water Separator with Fluorescence Sensing Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2696. [PMID: 37836337 PMCID: PMC10574624 DOI: 10.3390/nano13192696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/26/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023]
Abstract
Presently, the separation of oil and water through functional membranes inevitably entails either inefficient gravity-driven processes or energy-intensive vacuum pressure mechanisms. This study introduces an innovative photothermal evaporator that uses solar energy to drive oil-water separation while concurrently facilitating the detection of Fe3+ in wastewater. First, by alkali delignification, small holes were formed on the side wall of the large size tubular channel in the direction of wood growth. Subsequently, superhydrophilic SiO2 nanoparticles were in situ assembled onto the sidewalls of the tubular channels. Finally, carbon quantum dots were deposited by spin-coating on the surface of the evaporator, paralleling the growth direction of the wood. During the photothermal evaporation process, the tubular channels with small holes in the side wall parallel the bulk water, which not only ensures the effective water supply to the photothermal surface but also reduces the heat loss caused by water reflux on the photothermal surface. The superhydrophilic SiO2 nanoparticles confer both hydrophilic and oleophobic properties to the evaporator, preventing the accumulation of minute oil droplets within the device and achieving sustained and stable oil-water separation over extended periods. These carbon quantum dots exhibit capabilities for both photothermal conversion and fluorescence transmission. This photothermal evaporator achieves an evaporation rate as high as 2.3 kg m-2 h-1 in the oil-water separation process, and it has the ability to detect Fe3+ concentrations in wastewater as low as 10-9 M.
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Affiliation(s)
- Xin Li
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Wei Lin
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Florian Ion Tiberiu Petrescu
- Department of Mechanisms and Robots Theory, National University of Science and Technology Polytechnic Bucharest, 060042 Bucharest, Romania;
| | - Jia Li
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Likui Wang
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Haiyan Zhu
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Haijun Wang
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
| | - Gang Shi
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; (X.L.); (J.L.); (L.W.); (H.Z.)
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6
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Xia X, Ma J, Liu F, Cong H, Li X. A Novel Demulsifier with Strong Hydrogen Bonding for Effective Breaking of Water-in-Heavy Oil Emulsions. Int J Mol Sci 2023; 24:14805. [PMID: 37834251 PMCID: PMC10573199 DOI: 10.3390/ijms241914805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
In the heavy petroleum industry, the development of efficient demulsifiers for the effective breaking of interfacially active asphaltenes (IAA)-stabilized water-in-heavy oil (W/HO) emulsions is a highly attractive but challenging goal. Herein, a novel nitrogen and oxygen containing demulsifier (JXGZ) with strong hydrogen bonding has been successfully synthesized through combining esterification, polymerization and amidation. Bottle tests indicated that JXGZ is effectual in quickly demulsifying the IAA-stabilized W/HO emulsions; complete dehydration (100%) to the emulsions could be achieved in 4 min at 55 °C using 400 ppm of JXGZ. In addition, the effects of demulsifier concentration, temperature and time on the demulsification performance of JXGZ are systematically analyzed. Demulsification mechanisms reveal that the excellent demulsification performance of JXGZ is attributed to the strong hydrogen bonding between JXGZ and water molecules (dual swords synergistic effect under hydrogen bond reconstruction). The interaction of the "dual swords synergistic effect" generated by two types of hydrogen bonds can quickly break the non-covalent interaction force (π-π stacking, Van der Waals force, hydrogen bonds) of IAA at the heavy oil-water interface, quickly promote the aggregation and coalescence of water molecules and finally achieve the demulsification of W/HO emulsions. These findings indicate that the JXGZ demulsifier shows engineering application prospects in the demulsification of heavy oil-water emulsions, and this work provides the key information for developing more efficient chemical demulsifiers suitable for large-scale industrial applications.
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Affiliation(s)
- Xiao Xia
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Jun Ma
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Fei Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Haifeng Cong
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (H.C.); (X.L.)
- Zhejiang Institute of Tianjin University, Ningbo 315201, China
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (H.C.); (X.L.)
- Zhejiang Institute of Tianjin University, Ningbo 315201, China
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7
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Cheng Q, Cao G, Bai Y, Zhu Z, Zhang N, Li D. Probing the Demulsification Mechanism of Emulsion with SPAN Series Based on the Effect of Solid Phase Particles. Molecules 2023; 28:molecules28073261. [PMID: 37050024 PMCID: PMC10096346 DOI: 10.3390/molecules28073261] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 03/28/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023] Open
Abstract
The solid particles in the produced fluids from the oil wells treated by compound flooding can greatly stabilize the strength of the interfacial film and enhance the stability of the emulsion, increasing the difficulty of processing these produced fluids on the ground. In this paper, the oil phase and the water phase were separated from the SPAN series emulsions by electrical dehydration technology and adding demulsifier agents. The changing trends of the current at both ends of the electrodes were recorded during the process. The efficient demulsification of the emulsion containing solid particles was studied from the perspective of oil-water separation mechanisms. Combined with the method of molecular dynamics simulation, the effect of the addition of a demulsifier on the free movement characteristics of crude oil molecules at the position of the liquid film of the emulsion were further analyzed. The results indicated that the presence of solid particles greatly increased the emulsifying ability of the emulsion and reduced its size. Under the synergistic effect of demulsifier and electric dehydration, the demulsification effect of the emulsion increased significantly, and the demulsification rate could reach more than 82%. The addition of demulsifiers changed the stable surface state of the solid particles. The free movement ability of the surrounding crude oil molecules was enhanced, which led to a decrease in the strength of the emulsion film so that the water droplets in the emulsions were more likely to coalesce and break. These results are of great significance for the efficient treatment of wastewater from oilfields, promoting the sustainability of environment-friendly oilfield development.
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Affiliation(s)
- Qingchao Cheng
- Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
| | - Guangsheng Cao
- Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
| | - Yujie Bai
- Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
| | - Zhixuan Zhu
- Research Institute of Oil Production Engineering, PetroChina Daqing Oilfield Limited Company, Daqing 163453, China
- Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation, Daqing 163453, China
| | - Ning Zhang
- Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
| | - Dongju Li
- Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
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8
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Meng M, Yang Q. Investigation of the Microscopic Process of the Media Coalescence Treatment of Water-in-Oil Emulsion. ACS OMEGA 2023; 8:11908-11915. [PMID: 37033871 PMCID: PMC10077465 DOI: 10.1021/acsomega.2c07274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/13/2023] [Indexed: 06/19/2023]
Abstract
Medium coalescence technology is a research hotspot for the separation of oil-in-water emulsions. However, the coalescence mechanism is still unclear, making it challenging to effectively improve the separation performance. Herein, the microscopic mechanism of medium coalescence was revealed. We found that the effective collision positions under the action of the flow field include the exposed granule surface, adherent droplet surface, and three-phase contact line. Furthermore, a numerical model of the microscopic process of water-in-oil emulsion permeation through a granular bed was established. The effects of different parameters (including the number of medium layers, Reynolds number, and inlet concentration) on the microscopic process of capturing dispersed-phase droplets in the bed and the pressure drop in the coalescence area were studied. The numerical results show that the droplets form the bridging structure between the granules. On the one hand, the bridging structure promotes the capture of the droplets by the bed; on the other hand, it causes pressure-drop fluctuations in the coalescence area and asymmetric distribution of the velocity field.
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Affiliation(s)
- Min Meng
- School
of Mechanical and Power Engineering, East
China University of Science and Technology, Shanghai 200237, P.R. China
- Computational
Aerodynamics Institute, China Aerodynamics Research & Development
Center, Mianyang 621000, P.R. China
| | - Qiang Yang
- School
of Mechanical and Power Engineering, East
China University of Science and Technology, Shanghai 200237, P.R. China
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9
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Chen Q, Liu Y, Hou J, Li X, Wei B, Du Q. Phase Transition Characteristics of Heavy Oil-Viscosity Reducer-Water Emulsion Systems. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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10
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Ma H, Xia S, Sun C, Yu F, Cameron A, Zheng W, Shu Q, Pei H, Han Y. Novel Strategy of Polymers in Combination with Silica Particles for Reversible Control of Oil-Water Interface. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2216-2227. [PMID: 36576434 DOI: 10.1021/acsami.2c19037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hybrid smart emulsification systems are highly applicable in manipulating oil-in-water (O/W) droplets. Herein, novel switchable block polymers containing both zwitterionic and tertiary amine pendent groups were designed and synthesized to combine with charged silica particles to stabilize the O/W emulsion responsive to pH. This study was carried out in O/W emulsions stabilized with the polymer and silica particles under different pH conditions. The emulsion system was also simulated using molecular dynamics simulation to reveal the mechanism at molecular levels, thus gaining insight into the relationships between the emulsifying properties and the molecular interaction of the mixed system. Upon acidification of the continuous aqueous phase, protonated polymers with excellent hydrophilicity were induced by charged silica particles to cause rapid emulsion coalescence. In alkaline media, the mixed system conversely stabilized the O/W emulsions, cutting polymer consumption by over three-quarters. The emulsification and demulsification can be switched alternately by tuning the pH conditions. The applications exhibited excellent efficiency in separating heavy oil/water emulsions and proved the high conversion rate in emulsion polymerization. Overall, with this novel strategy to relieve tedious modifications on particle surfaces and massive consumption of polymers, the designed responsive emulsification systems can impart intelligent and controllable chemical reactivity to emulsions on demand in a more affordable and sustainable way.
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Affiliation(s)
- Hao Ma
- School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China
| | - Shuqian Xia
- School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China
| | - Caixia Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China
| | - Fuce Yu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China
| | - Alexandre Cameron
- School of Mining and Petroleum Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
| | - Wangang Zheng
- Research Institute of Petroleum Engineering, Sinopec Shengli Oilfield Co., Ltd., Dongying, Shandong257067, China
| | - Qinglin Shu
- Research Institute of Petroleum Engineering, Sinopec Shengli Oilfield Co., Ltd., Dongying, Shandong257067, China
| | - Haihua Pei
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao266580, China
| | - You Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China
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11
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A Review of Oil-Solid Separation and Oil-Water Separation in Unconventional Heavy Oil Production Process. Int J Mol Sci 2022; 24:ijms24010074. [PMID: 36613516 PMCID: PMC9820792 DOI: 10.3390/ijms24010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/08/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Unconventional heavy oil ores (UHO) have been considered an important part of petroleum resources and an alternative source of chemicals and energy supply. Due to the participation of water and extractants, oil-solid separation (OSS) and oil-water separation (OWS) processes are inevitable in the industrial separation processes of UHO. Therefore, this critical review systematically reviews the basic theories of OSS and OWS, including solid wettability, contact angle, oil-solid interactions, structural characteristics of natural surfactants and interface characteristics of interfacially active asphaltene film. With the basic theories in mind, the corresponding OSS and OWS mechanisms are discussed. Finally, the present challenges and future research considerations are touched on to provide insights and theoretical fundamentals for OSS and OWS. Additionally, this critical review might even be useful for the provision of a framework of research prospects to guide future research directions in laboratories and industries that focus on the OSS and OWS processes in this important heavy oil production field.
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12
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Saleh Medina LM, Cánneva A, Molinari FN, D'Accorso N, Negri RM. High removal of chlorinated solvents by reusable polydimethylsiloxane based absorbents. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Leila M. Saleh Medina
- Department of Inorganic, Analytical and Physical Chemistry. School of Exact and Natural Sciences University of Buenos Aires Buenos Aires Argentina
| | | | | | - Norma D'Accorso
- Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR) CONICET–Universidad de Buenos Aires Buenos Aires Argentina
- Institute of Physical Chemistry of Materials, Environment and Energy (INQUIMAE) University of Buenos Aires, National Council for Scientific and Technical Research (CONICET) Buenos Aires Argentina
| | - R. Martín Negri
- Department of Inorganic, Analytical and Physical Chemistry. School of Exact and Natural Sciences University of Buenos Aires Buenos Aires Argentina
- Institute of Physical Chemistry of Materials, Environment and Energy (INQUIMAE) University of Buenos Aires, National Council for Scientific and Technical Research (CONICET) Buenos Aires Argentina
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13
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Reversible demulsification and emulsification of surfactant emulsions regulated by light-responsive azo functionalized copper nanoclusters. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Li B, Ju M, Dou X, Li N, Zhang W, Sun Z, Yu K, Wang J, Wang Z. Assessing nanoparticle-surfactant-salt synergistic effects on droplet–droplet electrocoalescence by molecular dynamics simulations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Zeng Q, Zhang J, Zhao S, Yue H, Huang J, Guo Z, Liu W. Durable 3D Porous Superhydrophobic Composites for Versatile Emulsion Separation in Multiple Environments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12217-12228. [PMID: 36169614 DOI: 10.1021/acs.langmuir.2c01855] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Polydopamine as a multifunctional biomimetic polymer with nonselective strong adhesion properties has become a hot research topic in recent years. However, there are a few reports on the durable and effective emulsion separation of polydopamine composites from other materials. Therefore, it is necessary to construct durable polydopamine composites to achieve selective adsorption of materials. In this work, polypyrrole (PPy)-PDA was obtained on sponges by an in situ polymerization reaction, followed by the attachment of SiO2 nanoparticles to the surface by polydimethylsiloxane to achieve superhydrophobicity. As a result, previously unreported selective superhydrophobic adsorbents for PPy-PDA coatings were obtained. The prepared sponges have an excellent adsorption capacity for oils and organic solvents. Not only can the sponges absorb 19-39 g of organic solvents per gram but they can also absorb oil from oil-in-water emulsions. The chemical oxygen demand value of the emulsion can be reduced to 219 mg/L after separation. More importantly, the performance remains good in the cycle test, and due to the construction of a durable superhydrophobic sponge, it can still maintain its relatively good performance in artificial seawater, acid-base environments, and can achieve relatively stable emulsion separation. At the same time, the potential of the polymer material composited with PDA in lasting and stable emulsion separation was also verified.
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Affiliation(s)
- Qinghong Zeng
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Jiaxu Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- School of Engineering and Technology, China University of Geosciences, Beijing 730000, People's Republic of China
| | - Siyang Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Hao Yue
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Jinxia Huang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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16
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Li B, Ju M, Dou X, Li N, Zhang W, Xu H, Sun Z, Yu K, Wang J, Wang Z. Microscopic mechanism for nanoparticle-laden droplet–droplet electrocoalescence: A molecular dynamics study. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Zaman H, Shah AUHA, Ali N, Zhou C, Khan A, Ali F, Tian CT, Bilal M. Magnetically recoverable poly (methyl methacrylate-acrylic acid)/iron oxide magnetic composites nanomaterials with hydrophilic wettability for efficient oil-water separation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115690. [PMID: 35834853 DOI: 10.1016/j.jenvman.2022.115690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/18/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Due to the environmental and production problems of emulsion, it is important to efficiently separate oil-water emulsion to meet the refinery requirement and clean up oil spills. Synthesis of a universal demulsifier is not an easy task because the physical properties of crude oil vary, which makes its characterization and demulsification procedure difficult. To overcome this problem, hydrophilic and magnetically recoverable poly (methyl methacrylate-acrylic acid)/iron oxide magnetic composite nanoparticles ((P(MMA-AA)/Fe3O4 NPs) were developed as an efficient and economical demulsifier via soap-free emulsion polymerization. To characterize the magnetic composite NPs for their appropriate surface morphology and magnetic domain, TEM, FTIR, VSM, and TGA analyses were carried out. The newly synthesized NPs displayed good hydrophilic properties as they migrated quickly to the aqueous emulsion phase, which was also reassured by their water contact angle of 75°. They exhibit strong magnetic characteristics (20 amu/g) in the oil-water emulsion, makings the hydrophilic wettability capable and attractive to the external magnet. Experimental results revealed that the prepared magnetic composite NPs separated 99% of the water from stable emulsion in 30 min and could be recycled 8 times through magnetic separation. The recycled magnetic composite NPs maintain their hydrophilic wettability and efficiency in separating oil-water emulsion, making them economical and commercially viable. The migration of magnetic composite NPs to the aqueous phase in the stable emulsion with a strong magnetic domain explains the coalescence of emulsified water droplets and their quick separation from the stable emulsions through the external magnet.
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Affiliation(s)
- Hira Zaman
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Anwar Ul Haq Ali Shah
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan.
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
| | - Cao Zhou
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Adnan Khan
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Farman Ali
- Department of Chemistry, Hazara University, Mansehra, 21300, KPK, Pakistan
| | - Chen Tian Tian
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
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18
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Hassanshahi N, Hu G, Li J. Investigation of Dioctyl Sodium Sulfosuccinate in Demulsifying Crude Oil-in-Water Emulsions. ACS OMEGA 2022; 7:33397-33407. [PMID: 36157775 PMCID: PMC9494675 DOI: 10.1021/acsomega.2c04022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
This research investigated the performance of dioctyl sodium sulfosuccinate (DSS), a double-chain anionic surfactant, in breaking crude oil-in-water emulsions. The response surface methodology was used to consider the effect of the DSS concentration, oil concentration, and shaking time on demulsification efficiency and obtain optimum demulsification conditions. Further single-factor experiments were conducted to investigate the effects of salinity, crude oil conditions (fresh and weathered), and gravity separation settling time. The results showed that DSS efficiently demulsified stable emulsions under different oil concentrations (500-3000 mg/L) within 15 min shaking time. Increasing DSS concentration to 900 mg/L (critical micelle concentration) increased the demulsification efficiency to 99%. DSS not only improved the demulsification efficiency but also did not impede the demulsifier interfacial adsorption at the oil-water interface due to the presence of the double-chain structure. The low molecular weight enables the homogeneous distribution of DSS molecules in the emulsion, leading to a high demulsification efficiency within 15 min. Analysis of variance results indicated the importance of considering the interaction of oil concentration and shaking time in demulsification. DSS could reduce the total extractable petroleum hydrocarbons in the separated water to <10 mg/L without gravity separation and could achieve promising demulsification performance at high salinity (36 g/L) and various concentrations of fresh and weathered oil. The demulsification mechanism was explained by analyzing the microscopic images and the transmittance of the emulsion. DSS could be an efficient double-chain anionic surfactant in demulsifying stable oil-in-water emulsions.
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Affiliation(s)
- Nahid Hassanshahi
- Environmental
Engineering Program, University of Northern
British Columbia, Prince
George, British Columbia V2N4Z9, Canada
| | - Guangji Hu
- School
of Engineering, University of British Columbia,
Okanagan, Kelowna, British Columbia V1V 1V7, Canada
| | - Jianbing Li
- Environmental
Engineering Program, University of Northern
British Columbia, Prince
George, British Columbia V2N4Z9, Canada
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19
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Ma H, Xia S, Li N, Wang T, Zheng W, Yu T, Shu Q, Han Y. Emulsifying stability and viscosity reduction for heavy crude oil in surfactant-polymer composite system. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119713] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Li X, Yue X, Zou J, Yan R. A Novel Method to Characterize Dynamic Emulsions Generation and Separation of Crude Oil–Water System. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoxiao Li
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China
- College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, PR China
| | - Xiang’an Yue
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China
- College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, PR China
| | - Jirui Zou
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China
- College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, PR China
| | - Rongjie Yan
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China
- College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, PR China
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21
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Perspectives in the stability of emulsion explosive. Adv Colloid Interface Sci 2022; 307:102745. [PMID: 35872440 DOI: 10.1016/j.cis.2022.102745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/09/2022] [Accepted: 07/17/2022] [Indexed: 11/24/2022]
Abstract
This review explores the stability of emulsion explosive, through summarizing its instability reason, stability mechanism, affecting factors, improvement ways and evaluation methods. The emulsion explosive can be recognized as highly concentrated emulsion due to the volume fraction of dispersed phase exceed 74%. The polydispersity, deformation of compassed droplets and the high content of AN in dispersed phase should be considered for the stability of emulsion explosive. The coalescence is one of the important factor for the instability of emulsion explosive as the droplets bound to each other tightly, together with that, the crystallization of AN in dispersed droplets will occur. This process will further decrease the stability of emulsion explosive. Interfacial tension, the strength of interfacial film and electrical properties of droplets are the important mechanism for preparation and stability of emulsion explosive, among the three, the effect of the strength of interfacial film is most important, and the greater the strength of the interfacial film, the more stable the emulsion explosive. The stability of emulsion explosive will be affected by the emulsifier's structure, the viscosity and polarity of oil, the crystallization point of AN and the nature of matrix, in which, it is important to pay attention to the influence of emulsifier structure because adjusting emulsifier structure is a key channel to improve the stability of emulsion explosive. Besides that, the targeted methods to improve the stability of different emulsion explosive, such as bulk emulsion explosive, packaged emulsion explosive and powdery emulsion explosive, were concluded and established. Finally, we proposed some effective methods for evaluating and predicting stability of emulsion explosive. These results will facilitate the further development of the researches in the mechanism and improvement approach of stability, as well as it will also provide effective technical support for exploring the stability of other similar highly concentrated emulsions.
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22
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Wang X, Wang N, Yuan S, Tang Q, Wang Y, Fang S, Duan M. Acrylate polymer prepared by dispersion polymerization and its crude oil emulsion demulsification performance. J Appl Polym Sci 2022. [DOI: 10.1002/app.52777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiujun Wang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
- State Key Laboratory of Offshore Oil Exploitation Beijing China
| | - Naxiang Wang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Sisi Yuan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Qingqing Tang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
| | - Yifan Wang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
- Industrial Hazardous Waste Disposal and Resource Utilization Research Institute Southwest Petroleum University Chengdu China
| | - Ming Duan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
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23
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Abstract
Oil–water emulsions are widely generated in industries, which may facilitate some processes (e.g., transportation of heavy oil, storage of milk, synthesis of chemicals or materials, etc.) or lead to serious upgrading or environmental issues (e.g., pipeline plugging, corrosions to equipment, water pollution, soil pollution, etc.). Herein, the sources, classification, formation, stabilization, and separation of oil–water emulsions are systematically summarized. The roles of different interfacially active materials–especially the fine particles–in stabilizing the emulsions have been discussed. The advanced development of micro force measurement technologies for oil–water emulsion investigation has also been presented. To provide insights for future industrial application, the separation of oil–water emulsions by different methods are summarized, as well as the introduction of some industrial equipment and advanced combined processes. The gaps between some demulsification processes and industrial applications are also touched upon. Finally, the development perspectives of oil–water treatment technology are discussed for the purpose of achieving high-efficiency, energy-saving, and multi-functional treatment. We hope this review could bring forward the challenges and opportunities for future research in the fields of petroleum production, coal production, iron making, and environmental protection, etc.
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