Relevant bibliographies by topics / Demulsifier

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Demulsifier'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Demulsifier.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Demulsifier"

1

Chen, Shi Jun, Fan Tang, Wei Tian, Qiao Na Liu, and Gang Chen. "Research and Application of a New Demulsifier for the Processing of Produced Liquid in Chanqing Gasfield." Materials Science Forum 991 (May 2020): 166–71. http://dx.doi.org/10.4028/www.scientific.net/msf.991.166.

Full text
Abstract:
In view of the serious emulsification existing in Changqing condensate gas emulsion, the unclear oil-water interface and the poor application effect of demulsifier used in the field, it is urgent to study an efficient demulsifier. In this paper, PM and XP-1221 two kinds of demulsifiers are used to solve the emulsification problem. The PM demulsifier was compounded with XP-1221 chemical demulsifier to solve the emulsification problem of Changqing condensate. The effect of temperature and demulsifier concentration on demulsification performance was studied by bottle test method. The results showed that XP-1221 and PM could be effectively combined. The demulsification efficiency was high and the dehydrated water was clear. Studies have shown that XP-1221 has a good synergistic effect with PM. The suitable ratio of the composite demulsifier is 1:1, and the demulsifier effect of the demulsifier can meet the requirements of the oil field demulsifier. The composite demulsifier can meet the requirements of current oilfield demulsifiers.
APA, Harvard, Vancouver, ISO, and other styles
2

Xie, Yan Jiao, Feng Yan, and Jian Xin Li. "Interfacial Dilational Properties of Novel Crosslinking Phenol-Amine Resin Block Polyether Demulsifiers at Decane-Water Interfaces." Applied Mechanics and Materials 148-149 (December 2011): 202–5. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.202.

Full text
Abstract:
Nine novel crosslinking phenol-amine resin block polyether (PARPEmn) as demulsifier were synthesized for Shengli Oil Field. And the dilational rheological properties of absorbed film of nine different structural demulsifiers were investigated by longitudinal wavesmethod (the Langmuir trough-Wilhelmy plate technique) at the decane-water interfaces. The results show that demulsifier concentration is an important factor in controlling the dilational properties of adsorption layer. The dilational elasticity for all demulsifiers appeared a maximum value with the increasing concentration. Most important of all, the relations between interface dilational properties and demulsifier structures have been studied. It demonstrates that the interfacial dilational modulus increase with the increase the HLB value of demulsifiers.
APA, Harvard, Vancouver, ISO, and other styles
3

Wei, Nan Ning. "Synthesis and Application of a Polyether Demulsifiers." Advanced Materials Research 805-806 (September 2013): 1302–5. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.1302.

Full text
Abstract:
Aimed at the high water cut crude oil in Daqing Oilfield, polyether demulsifiers was synthesized indoor to investigate the dehydration effect of different initiator, catalyst, the mixture ratio of ethylene oxide and propylene oxide, block number of demulsifier on demulsifier. The results show that the polyether demulsifiers have high dehydration rate and out of the water of dehydration was clear. After using the polyether demulsifier, the crude oil demulsification temperature decreased from 55 °C to 40 °C and the average water cut of the crude oil is about 0.20%, it is reached the national crude oil external transport standard.
APA, Harvard, Vancouver, ISO, and other styles
4

Pramudono, B., and H. B. Mat. "Demulsifier Selection Based On The Evaluation Of Demulsification Performance Indicators." REAKTOR 9, no. 2 (June 19, 2017): 58. http://dx.doi.org/10.14710/reaktor.9.2.58-66.

Full text
Abstract:
A method for characterizing and selecting demulsifiers has been developed. The development was based on either the relationships between the demulsification parameters and demulsifier performance or demulsifier characteristics and demulsifier performance. The importance of each of these parameters to performance was discussed. The result was eight demulsification performance indicators consisting of the percentage of water separation, percentage of oil separation, demulsification efficiency, demulsification effectiveness, partition coefficient, interfacial pressure, interfacial activity, and Hydrophilic Balance (HLB). Quantification of the indicators conducted by determination of the performance indexes for each indicator. It was obtained from the condition that the demulsifier exhibits good performance. Additionally, the study found a correlation between the parameters it self. The demulsifier effectiveness as well as the interfacial pressure reaches a maximum value when the partition coefficient closed unity. Increasing of the interfacial pressure, in consequence, will increase both the demulsifier effectiveness and interfacial activity. The effect of both the HLB and molecular weight on the percentage of separation indicates a weak correlation.Keywords :A method for characterizing and selecting demulsifiers has been developed. The development was based on either the relationships between the demulsification parameters and demulsifier performance or demulsifier characteristics and demulsifier performance. The importance of each of these parameters to performance was discussed. The result was eight demulsification performance indicators consisting of the percentage of water separation, percentage of oil separation, demulsification efficiency, demulsification effectiveness, partition coefficient, interfacial pressure, interfacial activity, and Hydrophilic Balance (HLB). Quantification of the indicators conducted by determination of the performance indexes for each indicator. It was obtained from the condition that the demulsifier exhibits good performance. Additionally, the study found a correlation between the parameters it self. The demulsifier effectiveness as well as the interfacial pressure reaches a maximum value when the partition coefficient closed unity. Increasing of the interfacial pressure, in consequence, will increase both the demulsifier effectiveness and interfacial activity. The effect of both the HLB and molecular weight on the percentage of separation indicates a weak correlation.Keywords : Chemical demulsifier, demulsifier performance, demulsification parameters, performance index
APA, Harvard, Vancouver, ISO, and other styles
5

Raynel, Guillaume, Debora Salomon Marques, Sajjad Al-Khabaz, Mohammad Al-Thabet, and Lanre Oshinowo. "A new method to select demulsifiers and optimize dosage at wet crude oil separation facilities." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 76 (2021): 19. http://dx.doi.org/10.2516/ogst/2020096.

Full text
Abstract:
The current practice for crude oil demulsifier selection consists of pre-screening of the best performing demulsifiers followed by field trials to determine the optimum demulsifier dosage. The method of choice for demulsifier ranking is the bottle test. As there is no standard bottle test method, there are different methodologies reported in the literature. In this work, a new approach to bottle test and field trial was described which improved significantly the selection and dosage of the demulsifier. The bottle test was optimized by measuring an accurate mass of demulsifier. This method produces repeatable results. This bottle-test methodology was benchmarked against field trial results performed in oil processing plants. The field trials were also improved to avoid the accumulation effect of demulsifier, when optimizing their dosage. The field data for the optimization of demulsifier dosage was analyzed mathematically; and a graphical method to determine the optimum range is described.
APA, Harvard, Vancouver, ISO, and other styles
6

Lou, Yan Min, Yong Hui Zhang, Yong Kun Zhang, and Qing Wang Liu. "Research and Application of Combinational Demulsifier." Advanced Materials Research 472-475 (February 2012): 2674–77. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.2674.

Full text
Abstract:
The dehydrationrate of Daqing crude oil was not stable and the amount of chemical demulsifier used too much, which caused serious environmental pollution and enlarged the difficulty of dealing with crude oil. Therefore, PRJ-1 bio-demulsifier was selected to combine with chemical demulsifiers SP-169 and GT-D01, respectively, to resolve the crude oil emulsion of Daqing. The results showed that PRJ-1 can combine with SP-169 efficiently. The demulsification efficiency was high and dehydrated water was clear. However, the demulsification efficiency increased a little with GD-D01. The study shows that efficient synergetic effect between PRJ-1 and SP-169 was confirmed. The suitable proportionality of combinational demulsifier is 1:1 and the demulsifying effect can meet requirement of oilfield demulsifiers currently.
APA, Harvard, Vancouver, ISO, and other styles
7

Liu, Bao Jun, Jing Cheng Shi, Li Ping Guo, and Yin Peng Li. "Experiment Study of Demulsifier on the Oily Wastewater Treatment." Advanced Materials Research 945-949 (June 2014): 3475–78. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.3475.

Full text
Abstract:
Adopts the method of adding demulsifiers into the oily wastewater to increase the droplets size to further improve the efficiency of oil-water separation, and puts forward the corresponding optimized indicators and methods of demulsifiers. The optimized selection of the demulsifiers and its additive dosage was carried out by indoor experiments based on the optimized indicators. Using artificial produced water to test the treatment effect of the optimized demulsifier at different action time. The experiments show that demulsifier S1 with additive dosage of 20mg/l can accordance with the requirements of the processing very well, and as the increase of action time, the average size of droplets increase and the amount of the droplets which under 1μm decrease.
APA, Harvard, Vancouver, ISO, and other styles
8

Otarbaev, Nurlybek Shyrynbekuly, Vladimir Mikhailovich Kapustin, Kazim Sadykovich Nadirov, Gulmira Zhankabylovna Bimbetova, Manap Kurmanbekovich Zhantasov, and Rashid Kazimovich Nadirov. "New Potential Demulsifiers Obtained by Processing Gossypol Resin." Indonesian Journal of Chemistry 19, no. 4 (August 13, 2019): 959. http://dx.doi.org/10.22146/ijc.38671.

Full text
Abstract:
Water contained in crude oil, forms so-called water-in-oil emulsions, the presence of which negatively affects the transportation and processing of oil. Demulsifiers are the special mixtures that are used to remove water from emulsions. The present paper is devoted to obtaining the demulsifiers by catalytic acid esterification of fatty acids mixture extracted from gossypol resin with isopropanol. Fourteen mixtures, containing mainly fatty acids and their ethers, were obtained and tested for demulsifying performance by using the bottle test. The relationship of the following values with the demulsibility of final mixtures was determined: the conditions of fatty acids esterification, the content of fatty acids in the demulsifier, the relative solubility number of the demulsifier, the toluene/water dynamic interfacial tension. The following conditions of fatty acids mixture esterification provided 64.8% of water removal at the dosage of 20 ppm of demulsifier: 385 K; 4 h; H2SO4/fatty acids mixture ratio 2.5 wt.%.
APA, Harvard, Vancouver, ISO, and other styles
9

Okoro, Emmanuel E., Chinedu G. Nnaji, Samuel E. Sanni, Eze F. Ahuekwe, and Kevin C. Igwilo. "Evaluation of a naturally derived waste brown oil extract for demulsification of crude oil emulsion." Energy Exploration & Exploitation 38, no. 4 (February 20, 2020): 905–22. http://dx.doi.org/10.1177/0144598720905080.

Full text
Abstract:
Conventional methods of eliminating water from crude oil such as the chemical injection have both economic and environmental impacts; thus, this study proposed an economic and environmentally friendly demulsifier. The bottle test method was used to study the performance of the natural extract and commercial demulsifier on a crude oil sample. The GC-MS profile of the extract was in agreement with previous reports on composition of oil extracted from rice bran using hexane, ultrasound assisted extraction and conventional solvent extraction with ethanol. Varying degrees of saturated and unsaturated fatty acids as well as retention times as observed, was a function of total time of scanning, according to NIST08 library of mass spectra. The performance of the demulsifier was expressed in terms of percentage of water separated from 100 ml samples of the oil samples. For both the demulsifiers, the performance increased with increase in volume of the demulsifier, separation time and operating temperature. The extracted demulsifier performed better than the chemical demulsifier under all the experimental conditions adopted in this study. Based on the parametric evaluation, it was observed the results from software corroborated the results obtained from experiments in terms of the observations of the combined effect of temperature and volume which showed the most significant influence on demulsification of the emulsified crude. The highest efficiency of the bio-demulsifier was obtained with a volume of 5 mL of the extract, at a temperature of 70°C and separation time of 60 min. A water separation efficiency of 85.6% was obtained as compared to the chemical demulsifier, which gave an efficiency of 80.2%.
APA, Harvard, Vancouver, ISO, and other styles
10

Buist, Ian, Alun Lewis, Allan Guarino, and Joe Mullin. "EXAMINING THE FATE OF EMULSION BREAKERS USED FOR DECANTING1." International Oil Spill Conference Proceedings 2005, no. 1 (May 1, 2005): 171–75. http://dx.doi.org/10.7901/2169-3358-2005-1-171.

Full text
Abstract:
ABSTRACT Skimmers operating in waves often recover a large amount of water, both in the form of water-in-oil emulsions and free water. Recovered water dramatically reduces the temporary storage capacity available for oily fluids offshore. The addition of chemical emulsion breakers to the recovery system has been shown to increase the amount of water that can be quickly decanted when recovering emulsions. A significant potential impediment to the application of emulsion breakers to extend temporary storage capacity is the ultimate fate of the emulsion breaking chemical(s). If they end up in the separated water, they will be discharged into the marine environment when the water is decanted. The objective of this study was to research the partitioning of emulsion breakers injected into an oil spill recovery system at both lab-scale and mid-scale, at Ohmsett. The experiments were designed to simulate the conditions in an offshore oil spill recovery operation. The ability of emulsion breaker addition to reduce water contents of the recovered fluid and the effects of demulsifier addition of the oil content of decanted water were also assessed. The formation of micelles by the surfactants in the water at high concentrations and the resulting limitations of the analytical technique used to measure high concentrations of the demulsifiers in the decanted water make definitive, quantitative conclusions about the partitioning of the demulsifier between oily and water phases impossible. The following general conclusions could be made:A large fraction of the demulsifier injected into the recovered fluid stream appears to end up in the decanted water.The concentrations of demulsifier in the decanted water are well in excess of 100 ppm and could be as high as 1000's of ppm. The use of a demulsifier injected into a recovery system, combined with decanting, substantially reduced the volume of water in temporary storage tanks and the water content of emulsions for disposal/recycling. The efficacy of the demulsifier was a strong function of free water content: if the free water content exceeded approximately 55%, the effect of the surfactant was substantially reduced. The degree of emulsion breaking increased with increasing mixing energy applied to the fluid. Increasing the flow rate (and hence turbulence level) and increasing the length of the flow path both resulted in increased emulsion breaking. Primary break occurred in only a few minutes: the application of demulsifier did not appear to affect the time required compared to previous tests without demulsifiers. The results indicated that the use of a demulsifier increased oil droplet concentrations in the decanted water by approximately a factor of two compared to similar tests without demulsifier.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Demulsifier"

1

Andrade, Jo?o Marconi de. "Remo??o, por flota??o, de ?leo em ?guas produzidas na ind?stria de petr?leo: efici?ncia e modelagem do processo." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17699.

Full text
Abstract:
Made available in DSpace on 2014-12-17T15:42:05Z (GMT). No. of bitstreams: 1 JoaoMApdf.pdf: 2174206 bytes, checksum: a1de24fc592da4515b2bf51d89278503 (MD5) Previous issue date: 2009-03-30
Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
The separation oil-water by the use of flotation process is characterized by the involvement between the liquid and gas phases. For the comprehension of this process, it s necessary to analyze the physical and chemical properties command float flotation, defining the nature and forces over the particles. The interface chemistry has an important role on the flotation technology once, by dispersion of a gas phase into a liquid mixture the particles desired get stuck into air bubbles, being conduced to a superficial layer where can be physically separated. Through the study of interface interaction involved in the system used for this work, was possible to apply the results in an mathematical model able to determine the probability of flotation using a different view related to petroleum emulsions such as oil-water. The terms of probability of flotation correlate the collision and addition between particles of oil and air bubbles, that as more collisions, better is the probability of flotation. The additional probability was analyzed by the isotherm of absorption from Freundlich, represents itself the add probability between air bubbles and oil particles. The mathematical scheme for float flotation involved the injected air flow, the size of bubbles and quantity for second, the volume of float cell, viscosity of environment and concentration of demulsifier. The results shown that the float agent developed by castor oil, pos pH variation, salt quantity, temperature, concentration and water-oil quantity, presented efficient extraction of oil from water, up to 95%, using concentrations around 11 ppm of demulsifier. The best results were compared to other commercial products, codified by ―W‖ and ―Z‖, being observed an equivalent demulsifier power between Agflot and commercial product ―W‖ and superior to commercial product ―Z‖
A separa??o ?leo/?gua pelo processo de flota??o ? caracterizada pelo envolvimento entre as fases l?quida e gasosa. Para a compreens?o desse processo, ? necess?rio estudar as propriedades f?sicas e qu?micas que governam a flota??o, estabelecendo a natureza e as for?as entre as part?culas. A qu?mica de interfaces desempenha um papel importante na tecnologia de flota??o, onde, por dispers?o de uma fase gasosa em uma mistura na fase l?quida, as part?culas a serem flotadas prendem-se ?s bolhas de ar e s?o conduzidas at? a camada superficial da solu??o, onde s?o separadas fisicamente. Atrav?s do estudo das intera??es interfaciais envolvidas, foi poss?vel aplicar seus resultados em uma equa??o que determina a probabilidade de flota??o por uma nova ?tica relacionada ?s emuls?es de petr?leo do tipo ?leo/?gua. Os termos da probabilidade de flota??o correlacionam os fen?menos de colis?o e de ades?o entre as part?culas de ?leo e as bolhas de ar. Na probabilidade de colis?o observa-se que quanto maior o n?mero de colis?es maior a probabilidade de flota??o. A probabilidade de ades?o foi analisada atrav?s da isoterma de adsor??o de Freundlich, que representa a probabilidade de ades?o entre as bolhas de ar e as part?culas de ?leo. A modelagem matem?tica para a flota??o envolveu o fluxo de ar injetado, o tamanho das bolhas de ar, a quantidade de bolhas por segundo, o volume da c?lula de flota??o, a viscosidade e a concentra??o do desemulsificante. Os resultados mostraram que o agente de flota??o desenvolvido a partir do ?leo de mamona, ap?s a varia??o do pH, salinidade, temperatura, concentra??o de desemulsificante e teor de ?leo/?gua, apresentou uma efici?ncia de remo??o de ?leo em ?gua acima dos 95%, usando uma concentra??o em torno de 11 ppm de desemulsificante. Os melhores resultados foram comparados com outros produtos comerciais, codificados por ―W‖ e ―Z‖, sendo observado um poder desemulsificante equivalente entre o Agflot e o produto comercial ―W‖ e superior ao produto comercial ‖Z‖
APA, Harvard, Vancouver, ISO, and other styles
2

Jimeno, Nieves. "Effect of demulsifiers on the separation of water-in-oil emulsion /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8347.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

WU, JIAN-ZHONG, and 吳建中. "Study the compatibility between demulsifier and gasoline additives." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/85435315055119970748.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liang, Chih-Hang, and 梁志宏. "On the Study of the Application of Amine-terminated Mannich PU resin demulsifier." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/51106083627980598284.

Full text
Abstract:
碩士
中國文化大學
應用化學研究所
88
This research is mainly to explore the feasibility of amine-terminated mannich oligomer as a demulsifier used in gasoline, and to further synthesize the new demulsifiers, i.e., amine-terminated mannich oligomer PU resins, and to study their physical properties. Experimental results show that, under fixed concentrations of detergent and other additives, increasing the concentration of respective demulsifier（i.e., R2-90, R2-89, R40-1, R40-2, R44-1, R44-23, R43-14, R43-15, R35-32, R35-33） will not change the surface tension of oil phase and the oil-water interfacial tension after shaking the graduate cylinder containing oil and water. The surface tension for water phase after shaking appears to decrease slightly, as a result of a small amount of oil diffusing into water phase. The experimental results also indicate that for water phase before shaking the conductivity coefficient is seen to increase slightly, as a result of increased hydrophilic groups. On the other hand, for water phase after shaking, the conductivity coefficient decreases drastically. This is because a small amount of oil drops diffusing into water phase to prevent the formation of hydrogen bonding between water molecules results in decreasing the conductivity coefficient. It is interesting to note that for oil-water interface before and after shaking the conductivity coefficient at the oil-water interface increases, as the concentration of demulsifier increases. This is the result of increased hydrophilics at the oil-water interface. Under the fixed concentration of additives but demulsifier, it was found that the viscosity for oil phase after shaking appeared to remain unchanged, but, for water phase after shaking, the viscosity decreased slightly. This is the result of a small amount of demulsifier diffusing into water phase from oil phase, thus causing the emulsification to take place. The efficacy for demulsifiers to absorb water from oil phase, under the same experimental condition described as above, appears to be better for R2-90, R40-1, R40-2 and R35-32 than for R2-89, R35-33, R43-14, R43-15, R44-1 and R44-23, respectively. For water phase, the performance is seen to be better for R2-89, R40-2, R35-32, R35-33, R43-15, R44-1 and R44-23 than for R40-1, R2-90 and R43-14, respectively. Interestingly, it was found that for oil phase before shaking the average particle size of oil molecule increased with increasing the concentration of R44-23 demulsifier, but, for oil phase after shaking, the average particle size of oil molecules decreased slightly. This may be the result of decreased free volume of oil molecules resulting from the intramolecular interaction of oil molecule itself. The structure of new demulsifier, i.e., amine-terminated mannich oligomer PU resin, has been proven by IR spectra. Under the fixed concentration of detergent, the surface tension for oil phase before and after shaking remains unchanged, but, for water phase after shaking, the surface tension decreases slightly, as a result of oil molecules adsorbed at the surface of water.
APA, Harvard, Vancouver, ISO, and other styles
5

Lin, Jong-Ching, and 林忠慶. "On the Study of the Physcial Properties of Alcohol/ Amine-terminated Mannich PU resin demulsifier." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02292213482294510862.

Full text
Abstract:
碩士
中國文化大學
應用化學研究所
89
This research mainly explores the feasibility of alcohol/amine-terminated mannich oligomer as a demulsifier used in gasoline,and further synthesizes the new demulsifiers, i.e.,alcohol/amine-terminated mannich PU resins,as well as studies their physical properties. Experimental results show that, under the fixed concentrations of detergent and other additives,increasing the concentration of the respective demulsifier(i.e.,Mb6,Mp2,R56-59 and Kao-R65)will increase the surface tension of the oil phase and the interfacial tension of the the oil-water interface,respectively,after shaking the graduate cylinder containing both oil and water. After shaking the mixed solution,the surface tension of the water phase appears to decrease slightly,as a result of a small amount of oil diffusing into water phase. Under the fixed concentration of detergent,the surface tension of of the oil phase and the the interfacial tension of the oil-water interface befor shaking appear to increase with increasing the respective concentration of Mb'6,Mp'2,R'56-59 and Kao'-R65,but the surface tension of the water phase after shaking is seen to decrease with increasing. After shaking the mixed solution , the surface tension of the water phase appears to decrease slightly,as a result of the oil molecules adsorbed at the surface of water. It is interesting to note that,for the system containing the samples of Mp'2 and R'56-59,the surface tension of water phase before shaking increases with increasing the concentration of Mp'2 and R'56-59,respectively,but,for the system containing Kao'-R65 sample,the surface tension of water phase before shaking decreases with an increase of Kao'-R65 concentration. The experimental results also indieate that,for the water phase before shaking,(i.e.,Mb6,Mp2,R56-59 and Kao-R65),the conductivity coefficient of this water phase containing the systems with the repective samples of Mb6,Mp2,R56-59 and Kao-R65,seems to increase slightly with increasing the respective concentration of Mb6,Mp2,R56-59 and Kao-R65. Under the fixed concentration of detergent,the experimental results also indicate that,for both the water phase and the oil-water interface before shaking the mixed solution,the conductiveity coefficient for the system containing respective sample of Mb'6 and Mp'2 seems to increase slightly with increasing the concentration of Mb'6 and Mp'2, respectively . Under the fixed concentration of Mb6,Mp2,R56-59and Kao-R65,respectively,except demulsifier,after shaking the mixed solution,the viscosity of the oil phase remains unchanged,but the viscosity of the water phase for the system with the respective samples of Mb6,Mp2,R56-59 and Kao-R65 decreases slightly,as the respective concentration of Mb6,Mp2,R56-59and Kao-56 increases. This is the result of a small amount of demulsifier diffusing into the water phase from the oil phase, thus causing the emulsificaton to take place. Under the fixed concentration of additives except the new demulsifier (i.e., Mb'6, Mp'2, R'56-59 and Kao'-R65),it has been found that,after shaking the mixed solution, the viscosity of oil phase remain unchanged,but,for the water phase,the viscosity decreases slightly.Under the same experimental condition described above,the efficacy of new demulsifiers absorbing water from the oil phase,appears to be better for the system containing the respective sample of Mb'6,Mp'2,R'56-59 and Kao'-R65 than for the system containing the respective sample of Mb6,Mp2,R56-59 and Kao-R65. For the water phase containing the system with the respective sample of Mb6,Mp2,R56-59 and Kao-R65,the performance seems to be better for the system with the respective sample of Mb6,Mp2 and R56-59 than for the system with the sample of Kao-R65. It was found that,for the oil phase of Mp2 system before shaking the mixed solution,the number average particle size of oil molecule increases with increasing the concentration of Mp2. On the other hand,for the system containing the respective sample of Kao-R65 and Mb6, the number average particle size of oil molecule for the oil phase before shaking the mixed solution decreases wih increasing the concentration of Mb6 and Kao-R65,repectively. After shaking the mixed solution,the number average particle size of oil molecules decreases slightly. This is the result of decreased free volume of the oil molecules resulting from the intramolecular interaction of oil molecule itelf. Interestingly,the structure of the new demulsifiers (i.e.,Mb'6,Mp'2,R'56-59andKao'-R65 ),alcohol/amine-terminated manich PU resins,has been proven by IR spectra. Under the fixed concentration of detergent expcept the new demulsifiers,it was found that,for the oil phase containing the system with the new demulsifiers before shaking the mixed solution ,the number average particle size of oil molecule increases with increasing the concentration of Mb'6 and Mp'2,respectively. For the oil phase after shaking,on the other,the average particle size of oil molcule decreases gradually with increasing the concentration of Mb'6 and Mp'2,respectively.
APA, Harvard, Vancouver, ISO, and other styles
6

SCOTT, LAUREN. "Designing the Head Group of Switchable Surfactants." Thesis, 2009. http://hdl.handle.net/1974/5294.

Full text
Abstract:
This thesis is an investigation into the development of amidine and guanidine based compounds to be employed as switchable surfactants. The surface activity of these molecules can be triggered by reaction with a benign gas, CO2. The ultimate application of these surfactants was to be used as emulsifying and demulsifying agents of crude oil and water emulsions. Synthesis and characterization of the following desired bases: N’-octyl-N,N-dimethylacetamidine (1), 2-octyl-2-imidazoline (2), 1-methyl-2-octyl-2-imidiazoline (3), N’-(4-heptylphenyl)-N,N-dimethylacetamidine (4), N’-(4-(octyloxy)phenyl)-N,N-dimethylacetamidine (5), N’-(4-(methyloxy)phenyl)-N,N-dimethylacetamidine (6), and N-octyl-N',N',N",N"-tetramethylguanidine (7) was carried out. Their solubility in water was quantified with NMR spectroscopy. All bases were reacted with CO2 and H2O to form bicarbonate salts, of which in situ characterization was achieved by IR and NMR spectroscopy. Percent conversion to the protonated forms at elevated temperatures was determined using NMR spectroscopy. A direct correlation between switchability and basicity was observed, as the strongest bases possessed the largest conversions to the protonated species, even at higher temperatures. The enthalpy of protonation was determined for each base through calorimetry experiments. These compounds were tested as demulsifying surfactants of crude oil and water emulsions. Demulsifying ability was determined to differ greatly with the head group structure of the various surfactants.
Thesis (Master, Chemistry) -- Queen's University, 2009-10-27 16:56:13.631
APA, Harvard, Vancouver, ISO, and other styles
7

Ilkhaani, Shahrokh. "MODELING AND OPTIMIZATION OF CRUDE OIL DESALTING." Thesis, 2009. http://hdl.handle.net/10012/4215.

Full text
Abstract:
When first received by a refinery, the crude oil usually contains some water, mineral salts, and sediments. The salt appears in different forms, most often times it is dissolved in the formation water that comes with the crude i.e. in brine form, but it could also be present as solid crystals, water-insoluble particles of corrosion products or scale and metal-organic compounds such as prophyrins and naphthenates. The amount of salt in the crude can vary typically between 5 to 200 PTB depending on the crude source, API, viscosity and other properties of the crude. For the following reasons, it is of utmost importance to reduce the amount of salt in the crude before processing the crude in the Crude Distillation Unit and consequently downstream processing units of a refinery. 1. Salt causes corrosion in the equipment. 2. Salt fouls inside the equipment. The fouling problem not only negatively impacts the heat transfer rates in the exchangers and furnace tubes but also affects the hydraulics of the system by increasing the pressure drops and hence requiring more pumping power to the system. Salt also plugs the fractionator trays and causes reduced mass transfer i.e. reduced separation efficiency and therefore need for increased re-boiler/condenser duties. 3. The salt in the crude usually has a source of metallic compounds, which could cause poisoning of catalyst in hydrotreating and other refinery units. Until a few years ago, salt concentrations as high as 10 PTB (1 PTB = 1 lb salt per 1000 bbl crude) was acceptable for desalted crude; However, most of the refineries have adopted more stringent measures for salt content and recent specs only allow 1 PTB in the desalted crude. This would require many existing refineries to improve their desalting units to achieve the tighter salt spec. This study will focus on optimizing the salt removal efficiency of a desalting unit which currently has an existing single-stage desalter. By adding a second stage desalter, the required salt spec in the desalted crude will be met. Also, focus will be on improving the heat integration of the desalting process, and optimization of the desalting temperature to achieve the best operating conditions in the plant after revamp.
APA, Harvard, Vancouver, ISO, and other styles
8

Zhou, Xiu-Jing, and 周秀靜. "Study the Effect of Demulsifiers on the Property of Diesel." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/76552771889506272491.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Demulsifier"

1

Jansson, Mikael. "Organic Ions as Demulsifiers." In Emulsions — A Fundamental and Practical Approach, 259–68. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2460-7_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Akay, G., Z. Z. Noor, and M. Dogru. "Process Intensification in Water-in-Crude Oil Emulsion Separation by Simultaneous Application of Electric Field and Novel Demulsifier Adsorbers Based on Polyhipe Polymers." In ACS Symposium Series, 378–92. Washington, DC: American Chemical Society, 2005. http://dx.doi.org/10.1021/bk-2005-0914.ch023.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Umar, Abubakar A., Nobert I. Nnakenyi, Muhammad K. Abba, and I. H. Roy-Omeni. "Surfactants as Integral Components of Chemical Demulsifiers." In Surfactants in Upstream E&P, 443–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70026-3_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Mukherjee, Surajit, and Arnold P. Kushnick. "Effect of Demulsifiers on Interfacial Properties Governing Crude Oil Demulsification." In ACS Symposium Series, 364–74. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0396.ch019.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Breen, Patrick J. "Adsorption Kinetics of Demulsifiers to an Expanded Oil—Water Interface." In ACS Symposium Series, 268–79. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1995-0615.ch018.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Singh, Man, and Sunita Singh. "Demulsifier Salts: Pulling out of Impurities by Preferential Binding Activities." In Survismeter, 293–96. Jenny Stanford Publishing, 2019. http://dx.doi.org/10.1201/9780429027611-46.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"Demulsifiers." In Petroleum Engineer's Guide to Oil Field Chemicals and Fluids, 787–808. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-803734-8.00023-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Fink, Johannes Karl. "Demulsifiers." In Hydraulic Fracturing Chemicals and Fluids Technology, 89–93. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-411491-3.00007-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fink, Johannes. "Demulsifiers." In Hydraulic Fracturing Chemicals and Fluids Technology, 113–17. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-822071-9.00014-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Fink, Johannes Karl. "Demulsifiers." In Oil Field Chemicals, 325–44. Elsevier, 2003. http://dx.doi.org/10.1016/b978-075067703-5/50047-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Demulsifier"

1

Li, Ang, Jianfeng Bai, Yun Shen, Hang Jin, Wei Wang, Jing Gong, and Yaorong Feng. "Experimental Research on the Effect of Heating Temperature, Demulsifier Dose and Water Cut on the Oil-Water Separation in Three-Phase Separator." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84285.

Full text
Abstract:
The three-phase separator has a wide range of applications in oil production industry. For the purpose of studying the effect of heating temperature, demulsifiers and water content on the separation of oil-water mixture in the three-phase separator, eight kinds of oil samples were taken from different oil transfer stations in Changqing Oilfield and the mixtures were prepared by stirring method. To simulate the two-stage dehydration process, the first stage dehydration experiments without any heating were performed on mixtures at the dose of 100ppm demulsifer at 20°C, and the water cut of these mixtures is the same as that of the gathering pipeline in each oil transfer station. The water cut of the upper crude oil was measured after 40 minutes, and the values of them ranged from 0.5 vol% to 65.2 vol%. No visual stratification was observed for the sample most difficult to separate, so it was selected to conduct the second stage dewatering process. Three bottles of the same mixture were prepared and heated to 30°C, 40°C and 50°C, respectively. The results showed that all of them stratified in 10 minutes, and the water-cut values of the upper oil layer were 1.4 vol%, 0.5 vol% and 0.3 vol%, respectively, compared to 65.2 vol% at 20°C. When the concentration of demulsifier was changed to 200ppm and 300ppm, the results exhibited almost no differences. So it is deduced that the further improvement of heating temperature and demulsifier dose have limited enhancement on oil-water separation. At Last, 35 vol%, 50 vol%, 70 vol% and 85 vol% water cut mixtures of the special oil sample were made to experiment as previously. In consequence, the 35 vol% water-cut emulsions presented a relatively slow rate of oil-water stratification at low heating temperature, and the oil content of the lower separated water was improved by the addition of demulsifier dosage above 100ppm when the water cut was 90 vol%. It is indicated that high heating temperature is necessarry for low water-cut mixtures oil-water separation and can be appropriately reduced to save energy consumption as the water cut continues to rise. The demulsifier dosage is also neccessary be controlled in high water cut period. These experimental data provide the basis for the further optimization operation of the three-phase separator.
APA, Harvard, Vancouver, ISO, and other styles
2

MacConnachie, C. A., R. J. Mikula, L. Kurucz, and R. J. Seoular. "Correlation Of Demulsifier Performance And Demulsifier Chemistry." In Technical Meeting / Petroleum Conference of The South Saskatchewan Section. Petroleum Society of Canada, 1993. http://dx.doi.org/10.2118/ss-93-39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chang, Hongli, Naresh Saravanan, Yaoze Cheng, Yin Zhang, Abhijit Dandekar, and Shirish Patil. "Experimental Investigation of Heavy Oil Emulsion Stability: the Effect of Various Physicochemical Parameters." In SPE Western Regional Meeting. SPE, 2021. http://dx.doi.org/10.2118/200868-ms.

Full text
Abstract:
Abstract The formation of stable heavy oil emulsion, which may upset separation facilities and eventually lead to production impairment, is one of the most common issues encountered in the development of heavy oil reservoirs. This paper investigates the influence of various physicochemical parameters, including water cut, polymer status (sheared/unsheared), polymer concentration, demulsifier type and concentration, and the coexistence of polymer and demulsifiers on the stability of heavy oil emulsion. The viscosity of heavy oil emulsion is also studied at various water cut and polymer concentration. In this study, water-in-heavy oil emulsion was prepared at the water cut of 30% as the blank sample using heavy oil with API gravity of 14.5° and the synthetic brine. The effect of the water cut was investigated by both the bottle test method and multiple light scattering (MLS) method to validate the effectiveness and reliability of the MLS method. The other parameters were studied only through the MLS method. The results showed that the increasing water cut resulted in the decrease of heavy oil emulsion stability and could potentially invert the stable w/o emulsion to loose o/w emulsion at the phase inversion point where the emulsion viscosity peak occurred. Adding polymer, regardless of the polymer status, tended to reduce the stability of heavy oil emulsion, and the unsheared polymer contributed to less emulsion stability. However, the influence of polymer concentration was rather complicated. The emulsion stability decreased as polymer concentration increased, and further increasing polymer concentration enhanced the emulsion stability. A similar trend was also evidenced by emulsion viscosity with increasing polymer concentration. The addition of three oil-soluble emulsion breakers was able to break the heavy oil emulsion efficiently, whereas the water-soluble demulsifier had little demulsification effect. Furthermore, there existed an optimal concentration for the selected oil-soluble demulsifier to achieve the maximum separation. Although polymer itself could intensify the destabilization of heavy oil emulsion, it hindered the destabilization process of the heavy oil emulsion when the oil-soluble demulsifiers were added. This study will provide a comprehensive understanding of the factors affecting heavy oil emulsion stability.
APA, Harvard, Vancouver, ISO, and other styles
4

Wu, Di, Xiangchun Meng, Fengling Zhao, Sen Lin, Neng Jiang, Shaohui Zhang, Liyan Qiao, and Hui Song. "Dual Function Reverse Demulsifier and Demulsifier for the Improvement of Polymer Flooding Produced Water Treatment." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2013. http://dx.doi.org/10.2523/iptc-16594-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Wu, Di, Xiangchun Meng, Fengling Zhao, Sen Lin, Neng Jiang, Shaohui Zhang, Liyan Qiao, and Hui Song. "Dual Function Reverse Demulsifier and Demulsifier for the Improvement of Polymer Flooding Produced Water Treatment." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2013. http://dx.doi.org/10.2523/16594-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

MacConnachie, C., R. J. Mikula, R. J. Scoular, and L. J. Kurucz. "Optimizing Demulsifier Performance: A Fundamental Approach." In Annual Technical Meeting. Petroleum Society of Canada, 1994. http://dx.doi.org/10.2118/94-09.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Erfando, Tomi, and Emre Fathan. "Emulsion Treatment using Local Demulsifier from Palm Oil." In The Second International Conference on Science, Engineering and Technology. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0009360102990303.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Beetge, J. H., and B. O. Horne. "Chemical Demulsifier Development Based on Critical Electric Field Measurements." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2005. http://dx.doi.org/10.2118/93325-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Nguyen, Duy Thai, and Nick Sadeghi. "Selection of the Right Demulsifier for Chemical Enhanced Oil Recovery." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/140860-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wei, Lixin, Jinxiu Wang, Zhihua Wang, and Jincai Hou. "Selection and Evaluation of Demulsifier Applied to Aging Crude Oil Dehydration." In 2010 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2010. http://dx.doi.org/10.1109/appeec.2010.5449509.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Demulsifier' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography