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Zhang W, Wang Y, Lang X, Fan S. Interfacial Adhesion Forces of Hydrate Particles in the Presence of Hydrate Inhibitors. Langmuir 2022; 38:15526-15533. [PMID: 36475693 DOI: 10.1021/acs.langmuir.2c02124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hydrate inhibitors are traditionally utilized to prevent hydrate plugging. In this study, the adhesion forces of cyclopentane (CP) hydrates with thermodynamic inhibitors (ethanol, urea, and NaCl) and anti-agglomerant inhibitors [sorbitan monooleate (Span 80) and lecithin] were measured to understand the effects of hydrate inhibitors on the adhesion forces of hydrates. It was found that the thermodynamic inhibitors increased the early hydrate interparticle adhesion force due to the enhanced liquid bridge force. However, the liquid bridge acted as a lubricant layer to prevent the irreversible agglomeration of hydrate after long-term contact. The hydrate adhesion forces decreased by 90.5-93.0% and 76.6-92.7% with an increase in the concentration of Span 80 and lecithin, respectively, from 0.1 to 1 wt %. Both rough morphology and low interfacial tension contributed to the adhesion force decrease of hydrate after the addition of anti-agglomerant inhibitors. The results may be helpful for understanding the mechanism of influence and quantifying the impact of hydrate inhibitors on hydrate interparticle adhesion force.
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Affiliation(s)
- Wenjuan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510640, China
| | - Yanhong Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510640, China
- Zhuahai Institute of Modern Industrial Innovation, South China University of Technology, Zhuhai519175, China
| | - Xuemei Lang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510640, China
| | - Shuanshi Fan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510640, China
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Guerra A, Mathews S, Marić M, Rey AD, Servio P. An Integrated Experimental and Computational Platform to Explore Gas Hydrate Promotion, Inhibition, Rheology, and Mechanical Properties at McGill University: A Review. Energies 2022; 15:5532. [DOI: 10.3390/en15155532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
(1) Background: Gas hydrates are historically notable due to their prevalence and influence on operational difficulties in the oil and gas industry. Recently, new technologies involving the formation of gas hydrates to accomplish various applications have been proposed. This has created new motivation for the characterization of rheological and mechanical properties and the study of molecular phenomena in gas hydrates systems, particularly in the absence of oil and under pre-nucleation conditions. (2) Methodology: This work reviews advances in research on the promotion, inhibition, rheology, and mechanical properties of gas hydrates obtained through an integrated material synthesis-property characterization-multi-scale theoretical and computational platform at McGill University. (3) Discussion: This work highlights the findings from previous experimental work by our group and identifies some of their inherent physical limitations. The role of computational research methods in extending experimental results and observations in the context of mechanical properties of gas hydrates is presented. (4) Summary and Future perspective: Experimental limitations due to the length and time scales of physical phenomena associated with gas hydrates were identified, and future steps implementing the integrated experimental-computational platform to address the limitations presented here were outlined.
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Liu Y, Wu C, Lv X, Xu X, Ma Q, Meng J, Zhou S, Shi B, Song S, Gong J. Evolution of morphology and cohesive force of hydrate particles in the presence/absence of wax. RSC Adv 2022; 12:14456-14466. [PMID: 35702235 PMCID: PMC9096918 DOI: 10.1039/d2ra02266d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/06/2022] [Indexed: 01/10/2023] Open
Abstract
In the exploitation of deep-sea oil and gas resources, the multiphase production and transportation process is frequently plagued by pipeline blockage issues. Especially when hydrates and wax coexist simultaneously, the viscosity and plugging tendency of multiphase flow systems will synergistically increase. Understanding the evolution of morphology of hydrate particles and the agglomeration characteristics of hydrate particles in the presence or absence of wax crystals is crucial to flow assurance industry. With the assistance of a visualized reactor equipped with a three axis moving platform, microscopic images of cyclopentane hydrate during hydrate growth were obtained, and the cohesive force between hydrate particles was measured. It was found that during the hydrate growth on wax-free water droplets, the untransformed water inside the particles gradually wetted the surface of the particle. With the increase in temperature and contact time, the shell of hydrate particles changed from solid and rough to smooth and moist. The cohesive force measured in this work ranges from 3.14 ± 0.52 to 11.77 ± 0.68 mN m−1 with different contact times and temperature. When the contact time was 0 s and 10 s, the cohesive force between particles increased first and then stabilized with temperature. When the contact time was 20 s, the cohesive force was greater than the first two cases and showed an overall stable trend. An interesting phenomenon was also discerned: a large water bridge between particles formed during their separation process. For the wax-containing system, it required a longer time for water droplets to be converted into hydrate particles than that for wax-free systems. After wax participated in hydrate growth, hydrate particles showed the properties of elasticity and stickiness, which resulted in a larger liquid bridge between hydrate particles after their contact. It was suggested that wax crystal would alter the shell structure of hydrate particles, and change the surface properties of hydrate particles and the formation process of the liquid bridge, leading to significant and rapid increase in the cohesive force. In the exploitation of deep-sea oil and gas resources, the multiphase production and transportation process is frequently plagued by pipeline blockage issues.![]()
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Affiliation(s)
- Yang Liu
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Chengxuan Wu
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Xiaofang Lv
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China .,Institute of Petroleum Engineering Technology, Sinopec Northwest Oil Field Company Urumqi Xinjiang 830011 China
| | - Xinyi Xu
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Qianli Ma
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Jiawei Meng
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Shidong Zhou
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University Changzhou Jiangsu 213164 China
| | - Bohui Shi
- National Engineering Laboratory for Pipeline Safety/State Key Laboratory of Natural Gas Hydrate, China University of Petroleum-Beijing Beijing 102249 China
| | - Shangfei Song
- National Engineering Laboratory for Pipeline Safety/State Key Laboratory of Natural Gas Hydrate, China University of Petroleum-Beijing Beijing 102249 China
| | - Jing Gong
- National Engineering Laboratory for Pipeline Safety/State Key Laboratory of Natural Gas Hydrate, China University of Petroleum-Beijing Beijing 102249 China
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Wang D, Li D, Kelland MA, Cai H, Wang J, Xu Y, Lu P, Dong J. Unraveling Amphiphilic Poly( N-vinylcaprolactam)/Water Interface by Nuclear Magnetic Resonance Relaxometry: Control of Clathrate Hydrate Formation Kinetics. Langmuir 2022; 38:4774-4784. [PMID: 35380846 DOI: 10.1021/acs.langmuir.2c00472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Water-soluble amphiphilic polymers are vital chemicals in the oil and gas industry to retard crystal growth of hydrocarbon hydrate via surface adsorption and suppress nucleation of a pristine hydrate nucleus, thereby preventing formation of hydrate blockages in flow lines during oil and natural gas production. Apart from a few theoretical modeling studies, an experimental method to study the polymer/water interface in the crystal growth is critically needed. Here, water motions in the hydration shells of an exemplary kinetic inhibitor, poly(N-vinylcaprolactam), during hydrate formation from the tetrahydrofuran/water system are revealed via nuclear magnetic resonance relaxometry. Unequivocal experiments show that the pivotal interfacial water in the tightly bound state gradually freezes at rates depending on the polymer molecular weight (MW). This is supported by nonfreezable water analysis, which is correlated to the inhibition time. The polymers tune the kinetics of the hydration process via interaction with and perturbation of the water molecules. The free water component in the polymer solution crystallizes at a very slow rate when in partially restricted mobility, whereas the bound water component increases in the reaction, with the polymer/water interface serving as the reaction sites. The appropriate MW (including average MW and polydispersity values) of the inhibitive polymers can give rise to maximal retardation of the hydrate crystal growth. This work will help control other multiphase crystallization kinetic processes through the design of inhibitors or promoters functioning in the interface.
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Affiliation(s)
- Dong Wang
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Dongfang Li
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Malcolm A Kelland
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger N-4036, Norway
| | - Haokun Cai
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fiber Inspection Institute), Ningbo, Zhejiang Province 315048, China
| | - Jie Wang
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Ying Xu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Ping Lu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Jian Dong
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
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Huang B, Li J, Fu C, Guo T, Ding C, Zhang L, Guo W. Rheology investigation of propane gas hydrate crystallization in water/asphaltene-resin-wax deposit emulsions. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2032134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Bin Huang
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
- Daqing Oilfield Company, Post-Doctoral Scientific Research Station, Daqing, China
| | - Jiaoyang Li
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
| | - Cheng Fu
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
- Daqing Oilfield Company, Post-Doctoral Scientific Research Station, Daqing, China
| | - Tianyue Guo
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
| | - Chang Ding
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
| | - Lu Zhang
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
| | - Wei Guo
- Key Laboratory of Enhanced Oil, Recovery (Northeast Petroleum University), Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing, China
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Laroui A, Kelland MA, Wang D, Xu S, Xu Y, Lu P, Dong J. Kinetic Inhibition of Clathrate Hydrate by Copolymers Based on N-Vinylcaprolactam and N-Acryloylpyrrolidine: Optimization Effect of Interfacial Nonfreezable Water of Polymers. Langmuir 2022; 38:1522-1532. [PMID: 35067060 DOI: 10.1021/acs.langmuir.1c02903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Amphiphilic polymers have now been designed to achieve an icephobic performance and have been used for ice adhesion prevention. They may function by forming a strongly bonded but nonfreezable water shell which serves as a self-lubricating interfacial layer that weakens the adhesion strength between ice and the surface. Here, an analogous concept is built to prevent the formation of clathrate hydrate compounds during oil and natural gas production, in which amphiphilic water-soluble polymers act as efficient kinetic hydrate inhibitors (KHIs). A novel group of copolymers with N-vinylcaprolactam and N-acryloylpyrrolidine structural units are investigated in this study. The relationships among the amphiphilicity, lower critical solution temperature, nonfreezable bound water, and kinetic hydrate inhibition time are analyzed in terms of the copolymer compositions. Low-field NMR relaxometry revealed the crucial interfacial water in tightly bound dynamic states which led to crystal growth rates changing with the copolymer compositions, in accord with the rotational rheometric analysis results. The nonfreezable bound water layer confirmed by a calorimetry analysis also changes with the polymer amphiphilicity. Therefore, in the interface between the KHI polymers and hydrate, water surrounding the polymers plays a critical role by helping to delay the nucleation and growth of embryonic ice/hydrates. Appropriate amphiphilicity of the copolymers can achieve the optimal interfacial properties for slowing down hydrate crystal growth.
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Affiliation(s)
- Abdelatif Laroui
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Malcolm A Kelland
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Dong Wang
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Siyuan Xu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Ying Xu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Ping Lu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
| | - Jian Dong
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province 312000, China
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Peng Z, Wang W, Cheng L, Yu W, Li K, Liu Y, Wang M, Xiao F, Huang H, Liu Y, Ma Q, Shi B, Gong J. Effect of the Ethylene Vinyl Acetate Copolymer on the Induction of Cyclopentane Hydrate in a Water-in-Waxy Oil Emulsion System. Langmuir 2021; 37:13225-13234. [PMID: 34735162 DOI: 10.1021/acs.langmuir.1c01734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this paper, the effect of the ethylene vinyl acetate (EVA) copolymer, commonly used in improving rheological behavior of waxy oil, is introduced to investigate its effect on the formation of cyclopentane hydrate in a water-in-waxy oil emulsion system. The wax content studied shows a negative effect on the formation of hydrate by elongating its induction time. Besides, the EVA copolymer is found to elongate the induction time of cyclopentane hydrate through the cocrystallization effect with wax molecules adjacent to the oil-water interface.
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Affiliation(s)
- Zeheng Peng
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Wei Wang
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Lin Cheng
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Weijie Yu
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Kai Li
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Yingming Liu
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Mengxin Wang
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Fan Xiao
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Huirong Huang
- School of Petroleum Engineering, Chongqing University of Science & Technology, 20 Daxuecheng East Road, Shapingba, Chongqing 401331, PR China
| | - Yang Liu
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, No. 21, Gehu Middle Road, Wujin, Jiangsu, Changzhou 213016, PR China
| | - Qianli Ma
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, No. 21, Gehu Middle Road, Wujin, Jiangsu, Changzhou 213016, PR China
| | - Bohui Shi
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
| | - Jing Gong
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, State Key Laboratory of Natural Gas Hydrates, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, No.18 Fuxue Road, Changping, Beijing 102249, PR China
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Zhang D, Huang Q, Li R, Wang W, Zhu X, Li H, Wang Y. Effects of waxes on hydrate behaviors in water-in-oil emulsions containing asphaltenes. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116831] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Song G, Ning Y, Guo P, Li Y, Wang W. Investigation on Hydrate Growth at the Oil-Water Interface: In the Presence of Wax and Surfactant. Langmuir 2021; 37:6838-6845. [PMID: 34036780 DOI: 10.1021/acs.langmuir.1c01060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Natural gas hydrates can readily form in deep-water-oil production processes and pose a great threat to subsea pipeline flow assurance. The usage of surfactants and hydrate antiagglomerants is a common strategy to prevent hydrate hazards. In water/wax-containing oil systems, hydrate coexisting with wax could lead to more complex and risky transportation conditions. Moreover, the effectiveness of surfactants and hydrate antiagglomerants in the presence of wax should be further evaluated. In this work, for the purpose of investigating how wax and surfactants could affect hydrate growth at the oil-water interface, a series of microexperiments was conducted in an atmospheric visual cell where the nucleation and growth of hydrates took place on a water droplet surrounded by wax-containing oils. On the basis of the experimental phenomena observed using a microscope, the formation of a hydrate shell by lateral growth, the collapse of a water droplet after hydrate initial formation, and the formation of hollow-conical hydrate crystals were identified. These experimental phenomena were closely related to the concentration of wax and surfactant used in each case. In addition, it was shown that the effectiveness of the surfactant could be weakened by wax molecules. Moreover, there existed a critical wax content above which the effectiveness of the surfactant was greatly reduced and the critical wax content gradually increased with increasing surfactant concentration. This work could provide guidance for hydrate management in wax-containing systems.
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Affiliation(s)
- Guangchun Song
- Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, 266580 Shandong, China
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, 266580 Shandong, China
| | - Yuanxing Ning
- Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, 266580 Shandong, China
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, 266580 Shandong, China
| | - Penghao Guo
- Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, 266580 Shandong, China
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, 266580 Shandong, China
| | - Yuxing Li
- Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, 266580 Shandong, China
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, 266580 Shandong, China
| | - Wuchang Wang
- Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, 266580 Shandong, China
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, 266580 Shandong, China
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Bak IG, Heo CH, Kelland MA, Lee E, Kang BG, Lee JS. Clathrate Hydrate Inhibition by Polyisocyanate with Diethylammonium Group. Langmuir 2021; 37:4147-4153. [PMID: 33794088 DOI: 10.1021/acs.langmuir.0c03663] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polymers containing amide groups have been used as kinetic hydrate inhibitors (KHIs). The amide group has good performance for hydrate nucleus adsorption, resulting in inhibition of hydrate growth. Polyisocyanates composed of an amide backbone can be KHI candidates; however, the use of polyisocyanates as KHIs has not yet been reported. Herein, we prepared water-soluble poly[3-[[2-(diethylamino)ethyl]thio]-1-propyl isocyanate-ran-hexyl isocyanate] (P(DETPIC-ran-HIC)) to investigate the ability of polyisocyanates to inhibit hydrate formation. In the tetrahydrofuran (THF) clathrate hydrate crystal growth inhibition tests, P(DETPIC-ran-HIC) showed better performance than the polyamide, poly(N-vinylpyrrolidone) (PVP).
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Affiliation(s)
- In Gyu Bak
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
| | - Chi-Ho Heo
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
| | - Malcolm A Kelland
- Department of Chemistry, Bioscience and Environmental Engineering, University of Stavanger, N-4036 Stavanger, Norway
| | - Eunji Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
| | - Beom-Goo Kang
- Department of Chemical Engineering, Soongsil University, Seoul 06978, Korea
| | - Jae-Suk Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
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