Journal articles: 'Oil Separation'

1

Zhong, Xing Fu, Ying Xiang Wu, Song Mei Li, and Peng Ju Wei. "Investigation of Pipe Separation Technology in the Oilfield." Advanced Materials Research 616-618 (December 2012): 833–36. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.833.

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Crude oil separating is an important technological process in the petroleum industry. Pipe separation technology (PST) is a new kind of separating method in oil-water-gas separation. To compare with conventional gravity separators, the new separator based on PST is low weight, low cost, efficient and convenient to maintain. This paper introduces this new compact separator, technological process and performance test. The test results show that the compact separator has good separating effect. When the water-cut inlet is from 50% to 60%, and the mixture flow rate is from 40 t/hr to 100 t/hr, the water-cut in oil outlet is less than 5%, and the oil-cut in water is less than 100 mg/l.

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Yang, Xin, Jian Mei Feng, Yun Feng Chang, and Xue Yuan Peng. "Experimental Study of Oil-Gas Cyclone Separator Performance in Oil-Injection Compressor System." Advanced Materials Research 383-390 (November 2011): 6436–42. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6436.

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Experimental study of the separation efficiency of oil-gas cyclone separator for oil-injection compressor system was conducted with the aim of understanding the separation process and identifying the main parameters affecting the separation efficiency. Malvern Particle Size analyzer was applied to analyze the separators’ performance. By simultaneously measuring the oil droplet size distribution and oil concentration upstream and downstream of the separators, the separation performance was assessed. The results of the study contribute to an optimized cyclone separator design.

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Sinha, Shayandev, Khaled A. Mahmoud, and Siddhartha Das. "Conditions for spontaneous oil–water separation with oil–water separators." RSC Advances 5, no. 98 (2015): 80184–91. http://dx.doi.org/10.1039/c5ra16096k.

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Kelbaliyev, G. I., V. I. Kerimli, and G. N. Huseynov. "MODELING OF THE PROCESSES OF SEPARATION OIL EMULSIONS." Azerbaijan Chemical Journal, no. 2 (June 20, 2019): 15–21. http://dx.doi.org/10.32737/0005-2531-2019-2-15-21.

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5

Yang, Lele, Jing Wang, Yong Ma, Sen Liu, Jun Tang, and Yongbing Zhu. "Oil-Water-Gas Three-Phase Separation in Multitube T-Junction Separators." Water 11, no. 12 (December 16, 2019): 2655. http://dx.doi.org/10.3390/w11122655.

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Multitube T-junctions can be used as an oil-water-gas pre-separator in the oil and gas industry. In this paper, the mixture model, coupled with the k-ε turbulent model, was applied for a simulation of the oil-water-gas three-phase flow characteristics in the multitube T-junction separator. The oil droplet size ranged from 1 to 4 mm. The water content ranged from 5% to 20% and the gas content from 3% to 25%. According to the phase separation results for different droplet sizes, it was found that, as the oil droplet size increased, the water content at the water outlet initially increased and then tended to be stable. Therefore, it was necessary to increase the oil droplet size through corresponding measures before flowing into the T-junction for separation. For the separator with an inner diameter of 50 mm, the oil content at the inlet had a great influence on the water-oil separation performance, and the water-oil separation performance was obviously improved as the oil content decreased. Owing to increased residence time, the oil content had little influence on the water-oil separation performance when the separator with an inner diameter of 100 mm was applied. Moreover, for the separator with an inner diameter of 100 mm, the oil content had little influence on the degassing effect, and more than 90% of the gas could be discharged from the gas outlet. The separation performance of the multitube T-junction separator became worse as the inlet gas content increased.

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Cai, Wen Bin, Yuan Gang Xu, and Qi Zhang. "Design of Downhloe Oil-Water Cyclone Separator and the Study of Laboratory Experiment." Advanced Materials Research 339 (September 2011): 630–33. http://dx.doi.org/10.4028/www.scientific.net/amr.339.630.

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The cyclone plays an important role in the downhole oil-water separator during artificial lift for high water cut oil well, the processes of oil-water separation is completing in the cyclone. The oil-water cyclone separator was designed based on the oil and water density contrast and the cyclone separation theory; the laboratory experiment of cyclone separator was carried out and the relationship of the cyclone oil cut of apex and split ratio, oil-water separation efficiency and the velocity , the pressure loss of the cyclone and the velocity were also studied. When the reinjectivity is within 70% of the produced volume, cyclone separator has good water-oil separation ability, split ratio increased with the increase of the vecolity, when the flow vecolity reached 0.25m/s, the split ratio over 30%. But with the increase of the velocity, the increased rate of the split ratio is reduced. The relationship of the flow rate and cyclone intrinsic pressure loss is nonlinear exponential curve.

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Kharkov, Nikita, Olga Ermak, and Olesya Aver’yanova. "Numerical Simulation of the Centrifugal Separator for Oil-Water Emulsion." Advanced Materials Research 945-949 (June 2014): 944–50. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.944.

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Calculation of a centrifugal water oil separator is shown. The separator represents alternative method of purifying water of oil inclusions and sludge (at a concentration up to 12%). The problems of creating a computational mesh, defining boundary conditions, separation two phases of oil-water emulsion and efficiency of separation are considered.

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Kartika, Ika Amalia, Muriel Cerny, Virginie Vandenbossche, Philippe Evon, Wega Trisunaryanti, Rino Rakhmata Mukti, Hartati Hartati, Nancy Dewi Yuliana, and Illah Sailah. "Optimisation of concurrent Calophyllum oil-resin extraction and separation." Research in Agricultural Engineering 67, No. 2 (June 25, 2021): 84–91. http://dx.doi.org/10.17221/67/2020-rae.

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This research optimised the application of a hexane-methanol mixture as a binary solvent for the concurrent oil-resin extraction and separation from Calophyllum seeds on a pilot scale, in a direct stage. The optimum oil and resin yields were determined by optimising the extraction conditions using response surface methodology and a second order polynomial model. The extraction conditions affected the oil and resin yields, with the extraction time as the biggest influencing factor. Optimum oil (65%) and resin (16%) yields were predicted to be obtained at 5.2 h and 433 rpm. The model validation with these extraction conditions showed that the predicted results and actual oil (62%) and resin (15%) yields were in passable agreement. The oil was composed of 75.4% triglycerides with a density of 0.874 g·cm–3, a viscosity of 26.4 mPa·s–1, an acid value of 46.4 mg KOH·g–1, an iodine value of 98.0 g iodine·100 g–1, trace water and sediment contents, and zero ash content. The resin had a viscosity of 4 694.8 mPa·s–1, a total phenolic content of a 4.51% gallic acid equivalent, an antioxidant activity of an 8.82 mg ascorbic acid equivalent·g–1, and an acid value of 126.2 mg KOH·g–1.

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9

SASAKI, HIROSHI. "Oil separation by surface chemical separation method." RESOURCES PROCESSING 41, no. 2 (1994): 79–80. http://dx.doi.org/10.4144/rpsj1986.41.79.

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10

Zhang, Xiaobin, Lei Lang, Xiaofeng Zhang, Hongqing Lv, and Na Gao. "Performance Prediction Model of Dynamic Pressure Oil-Air Separator." International Journal of Aerospace Engineering 2021 (February 10, 2021): 1–13. http://dx.doi.org/10.1155/2021/6665869.

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Based on the aeroengine lubricating oil system test bench, this paper used a dimensional analysis method to establish a mathematical model for predicting the separation efficiency and resistance of a dynamic pressure oil-air separator suitable for engineering. The analysis of the multivariate nonlinear fitting error and the experimental data showed that the established separation efficiency and resistance model could accurately predict the separation and resistance performance of the dynamic pressure oil-air separator within a certain range; the average error of the four separation characteristic prediction models was 3.5%, and the maximum error was less than 16%. The model that was established by the least square method had the highest accuracy; the average error of the multivariate nonlinear fitting of the four resistance characteristic prediction models was less than 4%, and the maximum error was less than 15%, which could be used to predict the resistance performance of the separator. The applicable working condition of the model is lubricating oil flow rate 4.3~8.5 L/min and oil-air ratio 0.5~3.

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11

Carvalho, A. J. G., D. C. Galindo, M. S. C. Tenório, and J. L. G. Marinho. "MODELING AND SIMULATION OF A HORIZONTAL THREE-PHASE SEPARATOR: INFLUENCE OF PHYSICOCHEMICAL PROPERTIES OF OIL." Brazilian Journal of Petroleum and Gas 14, no. 04 (January 7, 2021): 205–20. http://dx.doi.org/10.5419/bjpg2020-0016.

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Fluids produced from oil reservoirs typically contain oil, natural gas, water, sediments, in varying amounts, and contaminating gases. Considering that economic interest usually targets mostly oil and gas, primary processing is used to separate water/oil/gas, in addition to treating these phases. Therefore, the well stream should be processed as soon as possible after reaching the surface. Separator vessels are among the main equipment used at surface production facilities, being responsible for the separation of the produced phases. This work focuses on studying the fluid dynamic behavior in a horizontal three-phase separator. To accomplish this goal, we used the computer fluid dynamics software ANSYS CFX. First, we performed a detailed analysis of a “Standard Case” to understand in detail the entire separation process within the vessel. The results show the three phases through the simulation time, analyses of the separation efficiency, different fluids flow lines, pressure gradient inside the vessel, and effect of the diverter baffle. It also considers a variation of fluid flow at the inlet of the separator. These analyses include pictures of all cases studied. Afterwards, some parameters of the standard case were altered to evaluate its influence on fluid dynamics behavior and the functioning of the separator vessel. At last, we analyzed the influences of oil density and viscosity on the separation. The oil quality affects the primary separation directly, as the oil density and viscosity increase, for example, increases the drag between the fluids and decreases the rate of sedimentation, which stickles the separation process difficult. Two out of the three cases generated satisfactory results. The simulation with the heaviest oil presented the worse results.

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12

Sokolovic, S., R. Secerov-Sokolovic, and S. Sevic. "Two-Stage Coalescer for Oil/Water Separation." Water Science and Technology 26, no. 9-11 (November 1, 1992): 2073–76. http://dx.doi.org/10.2166/wst.1992.0664.

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Many different types of coalescers are used for separation of oil-in-water dispersion. The investigated results of a newly developed two stage coalescer are given in this work. The proposed designofthis coalescer includes two independent stages which are set in the same coalescer body. Expanded polystyrene granules are being used in the first stage. By using this coalescent material, gravity separation and the large oil droplets, coalescence processes are at the same time being insured. The second stage of this new type of coalescer uses polyurethane foam. The surface of this layer has been previously oiled. the proposed two stage coalescer has been tested for different type of oily wastewaters. A high loaded oilywastewater has been treatedby the new coalescer separator in the field In a one year working period, a mean oil separation efficiency has been higher than 98 %. The proposed coalescer can be use for suspended solids separation at the same time. Mean separation efficiency has been 85% duringthe field test.

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13

Madyshev, I. N., V. E. Zinurov, A. V. Dmitriev, Xuan Vinh Dang, and G. R. Badretdinova. "Investigation of outlet diameter effect on emulsion separation efficiency in rectangular separators." Proceedings of Irkutsk State Technical University 24, no. 6 (January 13, 2021): 1232–42. http://dx.doi.org/10.21285/1814-3520-2020-6-1232-1242.

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The purpose of the study is to conduct experimental studies of oil -water emulsion separation in a rectangular separator in the range of velocities along the device working area from 1.43 to 2.5 m/s. The efficiency of emulsion separation is determined by an experimental method based on measuring the density of a two-phase liquid, provided that the density of each component of the mixture is previously determined. The authors propose to use a device with U-shaped elements to increase its performance when separating oil-water emulsions. The device under study including two rows of U-shaped elements consists of one complete separation stage. The authors have conducted experimental studies of the device with U-shaped elements on the "oil-water" system, during which the efficiency of emulsion separation was evaluated. It was detemined that the proposed device provides the highest efficiency of emulsion separation of 68% when the diameter of the holes intended for the exit of the heavy phase equals to 2.5 mm in the range of emulsion velocities from 1.43 to 2.5 m/s. The conducted experimental studies will allow to use a turbulence model for calculation in the programs like Ansys Fluent or FlowVision, which will most adequately describe the separation process of similar emulsions. The experiments have proved the possibility of obtaining high values of efficiency. Therefore, the correct selection of technological parameters (average flow rate, concentration) and the size of the characteristic elements of the proposed device will allow to specify the design of a rectangular separator, for example, to calculate the number of stages to achieve the required separation efficiency or to determine the size of the separation elements.

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14

Wan, Chang Dong. "Numerical Simulation and Response Surface Optimization of Oil-Gas Separator." Advanced Materials Research 466-467 (February 2012): 396–99. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.396.

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CFD (computational fluid dynamics) is a good method for simulation of the oil-gas separator. When the volume concentration is less than 10%, the oil particle tracks can be simulated by DPM （Discrete Phase Model）. The results show that the separation efficiency is obviously affected by the diameter of separator air-outlet, the diameter of separator oil-outlet, and the angle of separator cone. But the quantified analysis on separation efficiency is difficultly brought forward by CFD. RSM (response surface methods) can help to identify factors influencing the responses by experiments. Finally, the optimum responses and design parameters will be obtained altogether.

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15

Zhang, Xiaojun, Yun Cheng, Songlin Nie, Hui Ji, and Laiguo Liu. "Simulation of Multiphase Flow of the Oil-Water Separation in a Rotating Packed Bed for Oil Purification." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/404327.

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HIGEE (High Gravity Rotary Device) rotating oil purifier which consists of two parts: hydrocyclone separator and rotating packed bed (abbr. RPB) is considered to be capable of removing the solid particle contaminant, moisture and gas simultaneously. As the major unit of HIGEE, the RPB uses centrifugal force to intensify mass transfer. Because of the special structure of RPB, the hydraulic characteristics of the RPB are very important. In this study, the multiphase flow model in porous media of the RPB is presented, and the dynamical oil-water separation in the RPB is simulated using a commercial computational fluid dynamics code. The operating conditions and configuration on the hydraulic performance of the RPB are investigated. The results have indicated that the separation efficiency of HIGEE rotating oil purifier is predominantly affected by operating conditions and the configurations. The best inlet pressure is 0.002 MPa. When the liquid inlet is placed in the outside of the lower surface of RPB; oil outlet is placed in the upper surface, where it is near the rotation axis; and water outlet is placed in the middle of the RPB, where it is far away from the oil outlet, the separating efficiency is the best.

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Leitão, Antonio A., and Carla M. P. Rangel. "Analysis of the Copesul Water-Oil Separation System." Water Science and Technology 20, no. 10 (October 1, 1988): 91–100. http://dx.doi.org/10.2166/wst.1988.0128.

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This paper presents an overview of the water-oil separation system at COPESUL (Companhia Petroquímica do Sul). The design and operation of the system are discussed, and possible changes to be implemented to keep the oil and grease content of the effluent within the limits acceptable for its admission to SITEL (the integrated system of liquid effluent treatment of the South Petrochemical Complex). Since the start of operation, the system chosen, which includes a pre-separator and tiltable plate interceptor (TPI) water-oil separator, has experienced problems. The effluent generated has frequently had an oil and grease content above the limit set for acceptance by SITEL. The situation was investigated, and it was found that the problem was due to the following: operational conditions were different to the design conditions; oil with a density higher than water was present; there were deficiencies in the maintenance and cleaning systems. Various options were studied to eliminate these problems, and priority was given to increasing the capacity of the separation system, segregating the oil with a density higher than water at its source, and increasing the frequency of system maintenance. It was thought that these measures would result in an effluent oil and grease content less than 100 mg/l, and that the separation system would operate with greater flexibility.

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Alkarbalaee, Ayat Ragheb, Adel Sharif Hammadi, and Ghassan Hamid Abdul Majeed. "Treating Wet Oil in Amara Oil Field Using Nanomaterial (SiO2) With Different Types of De emulsifiers." Iraqi Journal of Chemical and Petroleum Engineering 22, no. 1 (March 30, 2021): 29–38. http://dx.doi.org/10.31699/ijcpe.2021.1.4.

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One of the most important problems in the oil production process and when its continuous flow, is emulsified oil (w/o emulsion), which in turn causes many problems, from the production line to the extended pipelines that are then transported to the oil refining process. It was observed that the nanomaterial (SiO2) supported the separation process by adding it to the emulsion sample and showed a high separation rate with the demulsifiers (RB6000) and (sebamax) where the percentage of separation was greater than (90 and 80 )% respectively, and less than that when dealing with (Sodium dodecyl sulfate and Diethylene glycol), the percentage of separation was (60% and 50%) respectively. The high proportion of (NaCl + distilled water) raises the probability of the separation efficiency as the separation was (88.5,79)% and (65.5, 55) % for (RB6000, SebaMax)respectively with (SiO2) at 70 °C, while the results of separation were (77,85)% and (65,40) for (RB6000, Seba Max) respectively with (SiO2) at 50 °C after 120 minutes, where the (w/o ratio) was (9:1) for the high separation results and (7:3) for the lower separation results, at a speed of (12000rpm), and with a salt concentration of (1500) ppm, and less of these results at lower volumetric and temporal conditions. The (NaCl) salt deals with the wall films separating the droplets and reduces their viscosity [1]. As for the pH factor, it is at the value (2 and 3) represent a stable emulsion that is difficult to separate easily, but with the passage of raising the pH away from the acidic medium and near to the basic direction, a significant increase in the separation process was observed compared with the acidic medium at lower values, after 120 minutes the separation seemed to be good efficient, reaching (60 and 70) % respectively, while at the same time the emulsion reached a more efficient separation level with a pH of ( 8 and 7) equal to (80 and 87.3) %, at 50 °C with SebaMax demulsifier in presence of (SiO2), and with the same pH values, an increase was observed in the separation with the increase in temperature to (70 °C), then it returns to be a reverse emulsifier when the value exceeds (10) to (11, 12, 13).

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18

Liu, Hong Jun, Guang Zheng Jia, Shi Peng Chen, and Yong Peng Cai. "Optimization of Flow Deflector Quantities for Gravity Oil-Water Separator." Applied Mechanics and Materials 675-677 (October 2014): 685–88. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.685.

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The internal structure and the working principle of gravity oil-water separator used for self-circulation well-flushing equipment were introduced. Based on CFD, the flow field was calculated and analyzed with different quantities of horizontal deflectors and inclined deflectors in the separator. According to velocity vector diagrams and oil drop trajectory diagrams with different number of horizontal deflectors and inclined deflectors, the influence rules on separation efficiency were analyzed. The results show that the separation efficiency is improved gradually with the amount of horizontal deflectors increased, and the optimal value of separation efficiency is 3 inclined deflectors.

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Seon, Guwon, and Joon Ahn. "Design of Inlet-Port of the Cyclone-Type Oil Separator Using CFD." International Journal of Air-Conditioning and Refrigeration 24, no. 04 (December 2016): 1650025. http://dx.doi.org/10.1142/s2010132516500255.

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Numerical analysis was performed in order to design the shape of the oil separator for the cyclone-type used in the refrigeration system, which can raise the separation efficiency, and which can reduce the pressure drop. Based on the result of the existing research, the total length of the oil separator, the length of the outlet-port, and the pitch, the turn-number of the spiral structure inside the cylinder was determined. This research was performed to compare and to analyze the separation efficiency and pressure drop of the oil separator while the location of the inlet-port was changed. According to three locations in the entrance, the separation efficiency was predicted from 95.0% to 100%, and the pressure drop ranged from 2.33 to 19.8[Formula: see text]kPa. In conclusion, the shape, which was made eccentric to the edge, had the separation efficiency of 100% and the pressure drop of 2.33[Formula: see text]kPa, which could get the most excellent performance.

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GOTOH, Yoshio, Akimi SERIZAWA, Toshihiko EGUCHI, Hiroshi TANAKA, and Mitsuru IZUMI. "Oil Separation from Oil Polluted Soil by Micro Bubble Injection and Separation Mechanisms." JAPANESE JOURNAL OF MULTIPHASE FLOW 20, no. 1 (2006): 39–49. http://dx.doi.org/10.3811/jjmf.20.39.

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21

Ul'yanenko, V. I., N. P. Yur'eva, and V. P. Sergeev. "Separation of oil-soluble sulfonates from sulfonated oils." Chemistry and Technology of Fuels and Oils 22, no. 5 (May 1986): 214–17. http://dx.doi.org/10.1007/bf00719346.

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Fu, Zhendong, Jianyin Miao, Qi Wu, and Hongyang Zheng. "Analytical Study on Gas-Oil Separation of a Heat Pump System under Lunar Gravity." Advances in Mechanical Engineering 12, no. 10 (October 2020): 168781402096640. http://dx.doi.org/10.1177/1687814020966408.

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A heat pump in the aerospace industry can significantly reduce the area of radiator by elevating the rejection temperature. Especially for a Lunar base, the heat pump can improve the heat rejection capability of the thermal control system to adapt the high-temperature environment. However, gravity on the Lunar (about 1/6 g) may have an adverse impact on a gas-oil separator of the heat pump, and solving this problem is the key for a heat pump used on Lunar base. At present, the gas-oil separator all based on gravity separation theories, the researches under low or micro gravity were blank. In this work, a gravity separation model based on a single-particle principle was built, and the effects of the vapor velocity, the oil droplet initial velocity, and the oil droplet diameter were investigated under normal gravity. Then the variations of the separation efficiency under Lunar gravity were discussed and the numerical calculation results showed that the separation efficiency was reduced when the vapor velocity or droplet initial velocity increased in a certain height of the separator whenever under normal or Lunar gravity. Particularly, the separation efficiency under Lunar gravity was reduced from 99% to 55% than it under normal gravity.

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Dmitriev, Andrey, Vadim Zinurov, Dang Vinh, and Oksana Dmitrieva. "Removal of moisture from contaminated transformer oil in rectangular separators." E3S Web of Conferences 110 (2019): 01026. http://dx.doi.org/10.1051/e3sconf/201911001026.

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This paper deals with the removal of moisture from the contaminated transformer oil. Design of a rectangular separator and the results of water-oil emulsion separation are shown in this paper. The influence of different values of the separator height and the distance between the rows of elements on the emulsion separation efficiency was studied. In order to calculate the process of removing the moisture from transformer insulating oil, the multiphase Eulerian-Eulerian model “Volume of Fluid” with the number of phases equal to 2 was applied in ANSYS Fluent software package. K–ε turbulence model was used for the calculations. The results were obtained while solving the nonstationary issue. In the course of numerical simulation, the object of study was the transformer oil T-1500U, containing some water amount. The results of numerical simulation of water-oil emulsion separation in a rectangular separator are shown. In the course of numerical studies, it was found that the use of a rectangular separator in order to remove the moisture from transformer oil allows it to be purified from water by 99.99%, providing that the geometrical dimensions of device are chosen correctly. The use of developed rectangular separator can be an alternative to the use of decanting tanks, various separators and other purification devices, which have extremely low rate of purification of contaminated spent oils. This separator allows purifying the transformer oil from water with a speed of 1-2 m/s while the efficiency is equal to 99.99%.

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Maksimov, Yu V., S. S. Ivanov, and E. V. Zamaskina. "Separation of oil extracted from subgas oil fringes." Neftyanoe khozyaystvo - Oil Industry, no. 9 (2017): 124–27. http://dx.doi.org/10.24887/0028-2448-2017-9-124-127.

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Wang, Lingzi, Jianmei Feng, Shijing Xu, Xiang Gao, and Xueyuan Peng. "An experimental investigation of the oil film distribution in an oil–gas cyclone separator." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 231, no. 1 (August 3, 2016): 14–25. http://dx.doi.org/10.1177/0954408916658319.

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The film flow behavior in an oil–gas cyclone separator was experimentally studied to improve the separation efficiency in terms of the effect of the oil film on the cylinder wall. The oil film flow pattern was captured using a high-speed camera, and the cylinder wall was divided into seven regions to analyze according to the different oil film flow patterns. Along the cyclone cylinder height, the central part of the cylinder was the main flow area, in which droplet–wall collisions and oil film splashing were severe. Additionally, the oil film’s distribution characteristics under inlet velocities of 14.0, 16.0, and 18.0 m/s were compared, and the results showed that more splashing oil droplets were generated under higher inlet velocity. Moreover, changing the structure of the central channel and outer cylinder slightly changed the oil film’s area and flow pattern but exhibited a weak effect on the oil film thickness and re-entrainment. Then, an improved structure was proposed by adding a porous cylinder to the outer cyclone to avoid the generation of small splashing droplets from the oil film. The performance of the modified separator was measured in a real oil-injected compressor system, which demonstrated higher separation efficiency with no increase in static pressure loss. The separation efficiency increased by up to 2.7%, while the pressure loss decreased by up to 10%. Thus, the improved structure can improve the performance of oil–gas separators by changing the distribution and thickness of the oil film on the cylinder wall.

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Zhao, Liucheng, Shaoying Li, Xiaodong Yu, and Zhenfu Luo. "Effect of separating tank of compound dry separation bed on oil shale separation performance." Powder Technology 380 (March 2021): 311–20. http://dx.doi.org/10.1016/j.powtec.2020.11.001.

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Yang, Shu Ren, Di Xu, Chao Yu, Jia Wei Fan, and Cheng Chu Yue Fu. "Optimization Design for Oil-Water Separator of Injection-Production Technology in the same Well." Advanced Materials Research 803 (September 2013): 383–86. http://dx.doi.org/10.4028/www.scientific.net/amr.803.383.

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In order to solve the problem of high water cut wells in some oil field in Daqing that it could not get the large-scale application because of the bad separating effect of down hole centrifugal oil-water separator, we optimize the design of multi-cup uniform flux oil-water separator according to the similar separation principle of multi-cup uniform flux gas anchor, and it is obtained to achieve of injection-production technology in the same well which is of high water cut. The design concept of the separator is increasing the number of opening every layer and aperture gradually in subsection from up to down in the design process. The purpose is to get the close intake quantity of every orifice and guarantee the residence time is long enough in the separator, effectively shorten the length of down hole oil-water separator and reduce the production costs and operating costs.

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Liu, Hong Jun, Guang Zheng Jia, Yong Peng Cai, and Shi Peng Chen. "Design and Analysis for Partition Plate of Gravity Oil-Water Separator." Applied Mechanics and Materials 675-677 (October 2014): 669–73. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.669.

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The internal structure and the working principle of gravity oil-water separator used for self-circulation well-flushing equipment were given. Based on CFD, the flow field was calculated and analyzed with partition plate settings. The influences on separation efficiency were analyzed, according to velocity vector diagrams and oil drop trajectory diagrams. The results show that the location of the primary partition plate is installed more reasonable, the efficiency of separation is more advantage. Also, the structure and size of the primary partition plate and the size of the auxiliary partition plate can influence the efficiency of oil-water separation regularly.

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Maj, G., M. Laurent, M. Mastrangeli, and Y. Lecoffre. "TURBYLEC: DEVELOPMENT AND EXPERIMENTAL VALIDATION OF AN INNOVATIVE CENTRIFUGAL OIL – WATER SEPARATOR." International Oil Spill Conference Proceedings 2014, no. 1 (May 1, 2014): 634–48. http://dx.doi.org/10.7901/2169-3358-2014.1.634.

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ABSTRACT An innovative oil/water separator (TURBYLEC) has been developed in the frame of the HOVERSPILLTM European project (Fast Air Cushion platform for Oil Spill Remediation), partly funded by the European Commission's 7th Framework Program. Conventional separation solutions are not appropriate to the remediation scenarios targeted by the HOVERSPILLTM project, mainly because low weight and compactness are absolutely required for transportation on a hovercraft. Namely, high separation efficiency, imposed to satisfy environmental legislation for water release, is particularly difficult to achieve with a compact separator when skimmed flow rate, oil content and density contrast are submitted to large variations. This paper describes the development of a customized patented centrifuge separator devoted to the specific needs of the HOVERSPILLTM project. Conceptual studies, prototype manufacturing and experimental validation are described. The TURBYLEC prototype tested at CEDRE's facilities has a bulk (size and weight) compatible with its integration on the HOVERSPILLTM platform. Tests results show that TURBYLEC matches with expected use (i.e. downstream of a non-selective skimmer). In this configuration, TURBYLEC separator shows very good oil / water separation performances for inlet oil contents up to 25%. In this range of operating conditions its cut diameter has been evaluated to 60 μm. In order to achieve the same separation performances as with TURBYLEC, which weighs only 70 kg (with liquids), it would be necessary to install an 8 m3 gravity separator. TURBYLEC separator has been developed for a very specific duty (i.e. for integration on an Hovercraft for Oil Spill remediation). Nevertheless, its proven performances render it particularly attractive, as a standalone system, for many other specific tasks in the field of oil spill remediation. It could also interest various other water treatment applications.

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Guan, Yihao, Fangqin Cheng, and Zihe Pan. "Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review." Polymers 11, no. 5 (May 6, 2019): 806. http://dx.doi.org/10.3390/polym11050806.

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Oil spills and the emission of oily wastewater have triggered serious water pollution and environment problems. Effectively separating oil and water is a world-wide challenge and extensive efforts have been made to solve this issue. Interfacial super-wetting separation materials e.g., sponge, foams, and aerogels with high porosity tunable pore structures, are regarded as effective media to selectively remove oil and water. This review article reports the latest progress of polymeric three dimensional porous materials (3D-PMs) with super wettability to separate oil/water mixtures. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed. The typical 3D porous structures (e.g., sponge, foam, and aerogel), commonly used polymers, and the most reported techniques involved in developing desired porous networks have been reviewed. The performances of 3D-PMs such as oil/water separation efficiency, elasticity, and mechanical stability are discussed. Additionally, the current challenges in the fabrication and long-term operation of super-wetting 3D-PMs in oil/water separation have also been introduced.

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Lu, Ya Guo, and Jian Ping Hu. "Numerical Simulation for Air/Oil Separator of Aero-Engine." Applied Mechanics and Materials 510 (February 2014): 197–201. http://dx.doi.org/10.4028/www.scientific.net/amm.510.197.

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Presently numerical simulation of separator is based on the assumption that all the droplets can be separated once they impinge the wall. However, large oil droplets may splash into small particles, which result in lower separation efficiency. A modified simulation model is presented in this paper to model the impact behavior of oil droplet. Some semi-empirical computational models are introduced to calculate the number and diameters of the secondary droplets. Then, the performance of a typical air/oil separator is predicted, including the separation efficiency and the minimum diameter. Results show that about the efficiency may reduce 1~2% due to the splash phenomena. While, no obvious difference is observed.

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Qiu, Lei, and Ji Hai Duan. "Design and Simulation Optimization of the Gravity Oil-Water Separator." Advanced Materials Research 955-959 (June 2014): 2756–59. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2756.

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An oil/water separator with inlet component, perforated plates and coalesence internals was designed in this paper. The influence of the perforated plates on the flow field and the structures of coalesence component on the oil/water separation were simulated by commercial software FLUENT. The results show that the perforated plates can prevent turbulence and eliminate back-mixing flow effectively. And the flow field uniformity was the best,when the distance between the two plates was 140mm.The separator with inclined plates had the highest separation efficiency of the three structures.

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Carpenter, Chris. "Method Quantifies Separator-Oil Shrinkage." Journal of Petroleum Technology 72, no. 12 (December 1, 2020): 48–49. http://dx.doi.org/10.2118/1220-0048-jpt.

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper IPTC 19775, “Quantifying Separator-Oil Shrinkage,” by Mathias Lia Carlsen, SPE, and Curtis Hays Whitson, SPE, Whitson, prepared for the 2020 International Petroleum Technology Conference, Dhahran, Saudi Arabia, 13-15 January. The paper has not been peer reviewed. Copyright 2020 International Petroleum Technology Conference. Reproduced by permission. In tight unconventionals, oil and gas rates often are measured daily at separator conditions. Consequently, converting these rates reliably to volumes at standard conditions is necessary in cases where direct stock-tank measurements are not available. Because of changes in producing-wellstream compositions and separator conditions, the separator-oil shrinkage factor (SF) can change significantly over time. The complete paper presents a rigorous and consistent method to convert daily separator rates into stock-tank volumes. Recommendations for developing field-specific shrinkage correlations using field test data also are proposed. SF and Flash Factor (FF) Separator-Oil SF. Separator-oil SF is the fraction of metered separator oil rate that remains (or transforms into) stock-tank oil after further processing to standard conditions of 1 atm and 60°F. Put simply, the SF quantifies the decrease in oil volume from separator conditions to stock tank. The magnitude can range from less than 0.65 to 0.99. Separator-Oil FF. Separator-oil FF is the ratio of liberated gas from metered separator oil after further processing to standard conditions of 1 atm and 60°F. The FF accounts for the increase in gas volume from separator conditions to stock tank and explains why oil is shrinking (i.e., gas is coming out of the solution). The magnitude of the FF can range from 5 to 1,000 scf/STB. Total producing gas/oil ratio (GOR) can be calculated easily when SF and FF are known. An SF always is associated with an FF and is literally the solution GOR of the separator oil. Both SF and FF are a function of the top-side surface process and an associated wellstream composition. Surface Process. The surface process represents the number of topside separation stages and the associated separator pressure and temperature of each stage. In shale basins, two- and three-stage separation trains are common. The number of separation stages typically is fixed throughout the lifetime of a well. However, the separator temperature and pressure may vary significantly. Wellstream Composition. The well-stream composition quantifies the relative amounts of different components flowing out of a well at a given day. This measurement is typically expressed in mol%. Tight unconventional basins contain many kinds of in-situ reservoir fluid compositions from dry gas to black oils. The produced-wellstream compositions from these systems tend to change considerably with time because of producing flowing bottomhole pressures below the saturation pressure, as seen in the field example presented in Fig. 1. In the figure, the shut-in period after approximately 330 days results in a transient period with large compositional changes.

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Zhou, Y. B., L. Chen, X. M. Hu, and J. Lu. "Separation of oil from oily wastewater by modified resin." Water Science and Technology 59, no. 5 (March 1, 2009): 957–63. http://dx.doi.org/10.2166/wst.2009.068.

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A new type of packing material, polystyrene resin modified by cetyltrimethyl-ammonium bromide (R-CTAB), was developed for separation of emulsified oil wastewater. The unique separation mechanism of the modified resin is due to the hydrogen bond formation between hydrocarbon molecules and the free hydrophilic part of the fixed surfactant. It changed the zeta potential of oil droplets and made them coalescing easier, which provide an optional choice without any chemicals added into the wastewater. A column of R-CTAB was investigated for its performance in separating emulsified oil droplets in oily wastewater. The effects of liquid space velocity and influent oil concentration were studied in particular. The results showed that R-CTAB column was more efficient than the un-modified resin column. Under the optimum experimental conditions, more than 85% of oil was removed by using R-CTAB column that at least 10% higher than the un-modified resin column.

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Hui, Ji, Nie Song-Lin, and Bai Xiao-Rong. "Simulation on mechanism of contamination mitigation through Higee and hydrocyclone techniques in fluid power system." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 1 (December 13, 2016): 77–93. http://dx.doi.org/10.1177/0954408916684161.

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In this study, an innovative Higee hydraulic oil purification device capable of removing the solid particle contaminants and water moisture simultaneously is developed for dealing with the contamination control problem of fluid power systems. The purification device is considered as a combination of two units (hydrocyclone separator and rotating packed bed) according to different separation functions. The mathematical models about the migration regularity and dynamic behavior of different phases have been established, in which discrete phase model model is employed to simulate the solid particles – hydraulic oil separation, and Eulerian model is selected as the multiphase simulation model to simulate the hydraulic oil – water moisture separation. Simulation results demonstrate that the hydrocyclone separator can remove solid particles of 5 to 15 µm, while the rotating packed bed can mitigate water moisture. The results indicate that the developed Higee hydraulic oil purification device can provide an effective and efficient manner for controlling the contamination level of fluid power systems.

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Rafikovna Ganieva, Guzel, and Putu Aunda Niradgnani. "Modernization of Two-Phase Oil and Gas Separator." Nexo Revista Científica 33, no. 02 (December 31, 2020): 616–22. http://dx.doi.org/10.5377/nexo.v33i02.10797.

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Separators play an important role in the basis of the technological scheme and field preparation of oil and gas. Separation is the process of oil separation from gas. Depending on the requirements for the feedstock, separators are distinguished according to the principle of operation and purpose. In this paper, the company "PT Pertamina EP Asset 3 Subang", Indonesia (Nirajani) is considered as an example. Dimensions, efficiency, reliability of equipment, capital and operating costs are the main indicators of separator work and productivity. "Subang PT Pertamina EP Asset 3 Subang" collection station has 3 horizontal two-phase separators (high pressure, low pressure and test separator). In 2020, it is planned to increase the extraction of raw materials. In this regard, the aim of this work is to modernize the existing two-phase horizontal separator operated at the field. To achieve this goal, it is necessary to study the design of the existing separator, and calculate its performance (Nirajani). After all the calculations, it is necessary to choose a separator suitable for performance. Modernization of the existing separator is economically feasible for this enterprise.

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Zhang, Xiaobin, Xiaofeng Zhang, Delin Gu, Lei Lang, and Na Gao. "Numerical Study on the Influence of Length-Diameter Ratio on the Performance of Dynamic Pressure Oil-Air Separator." International Journal of Chemical Engineering 2021 (June 4, 2021): 1–16. http://dx.doi.org/10.1155/2021/6649128.

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In order to study the separation characteristics of the aeroengine dynamic pressure oil-air separator, this paper uses the coupling method of PBM and CFD two-fluid model to study the influencing factors such as cylinder diameter, cylinder length, and other factors on the separator performance. The flow field structure, velocity, gas volume distribution, separation efficiency, and gas and liquid holdup rate in the separator under different operating conditions are analyzed. Combined with the analysis results of the cylinder diameter and the cylinder length, the influence law of length-diameter ratio on separation efficiency is summarized. The optimum length-to-diameter ratio that maximizes the separation performance of the separator is obtained in this research, which provides a reference for the design and improvement of the separator. The results show that, as the diameter of the cylinder increases, the separation efficiency increases first and then decreases. When dsep = 16 mm and dsep = 18 mm, the separator reaches its maximum efficiency, which is about 93%. With the increase of the cylinder length, the separation efficiency first increases and reaches the maximum when l2 = 90 mm and then decreases slowly. When the separator cylinder is either too long or too short, it will cause the separation performance to decrease. There is an optimal aspect ratio. There is an optimal aspect ratio, and the separation performance of the separator is the best when the aspect ratio is between 5 and 6.

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Ting, Chue Cui, Afiq Mohd Laziz, Khoa Dang Dang Bui, Ngoc Thi Nhu Nguyen, Pha Ngoc Bui, Khoa Ta Dang, An Si Xuan Nguyen, Ngon Trung Hoang, Ku Zilati Ku Shaari, and Hoàng Huy Phước Lợi Phạm. "Hydrodynamic studies on liquid-liquid two phase flow separation in microchannel by computational fluid dynamic modelling." Science & Technology Development Journal - Engineering and Technology 4, no. 2 (May 4, 2021): first. http://dx.doi.org/10.32508/stdjet.v4i2.810.

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Microfluidic systems undergo rapid expansion of its application in different industries over the few decades as its surface tension-dominated property provides better mixing and improves mass transfer between two immiscible liquids. Synthesis of biodiesel via transesterification of vegetable oil and methanol in microfluidic systems by droplet flow requires separation of the products after the reaction occurred. The separation technique for multiphase fluid flow in the microfluidic system is different from the macro-system, as the gravitational force is overtaken by surface force. To understand these phenomena completely, a study on the hydrodynamic characteristics of two-phase oil-methanol system in microchannel was carried out. A multiphase Volume of Fluid model was developed to predict the fluid flow in the microchannel. An inline separator design was proposed along with its variable to obtain effective separation for the oil-methanol system. The separation performance was evaluated based on the amount of oil recovered and its purity. The capability of the developed model has been validated through a comparison of simulation results with published experiment. It was predicted that the purity of recovered oil was increased by more than 46% when the design with side openings arranged at both sides of the microchannel. The highest percentage recovery of oil from the mixture was simulated at 91.3% by adding the number of side openings to ensure the maximum recovery. The oil that was separated by the inline separator was predicted to be at 100% purity, which indicates that no methanol contamination throughout the separation process. The purity of the separated product can be increased by manipulating the pressure drop across the side openings. Hence, it can be concluded that the separation in a large diameter microchannel system is possible and methodology can be tuned to achieve the separation goal. Finally, the simulation results showed that the present volume of fluid model had a good agreement with the published experiment.

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Zhao, Zhi Guo, and Wen Ming Yu. "Numerical Simulation of Internal Flow Field on Diesel Centrifugal Gas-Oil Separator Based on CFD." Applied Mechanics and Materials 373-375 (August 2013): 409–12. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.409.

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Aiming at the low efficiency problem of the traditional gas-oil separator, this paper put forward a centrifugal gas-oil separator. In order to identify out the interior fluid field character of centrifugal gas-oil separator, RANS equation, RNG k-ε model and discrete phase model was applied to simulate the interior fluid field character and separation efficiency of centrifugal gas-oil separator. The simulation results showed that the flow field in the disc clearance was mainly laminar flow, and the flow field at the import and export of the disc was turbulence. Meanwhile, the velocity and pressure of the interior fluid field were equably distributed, the velocity and pressure in the disc clearance fluctuate in a tight range along vertical direction, and decrease along horizontal direction, and the particles in the disc clearance were distributed uniformly. The separation efficiency was 96.6% and the results met the design requirements.

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Song, Xing Liang. "Research on Separation Efficiency for Oil/Gas Separator of Submersible Electrical Pump." Applied Mechanics and Materials 295-298 (February 2013): 3261–64. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.3261.

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The criteria equation was established by using dimensional analysis; through the method of field experiment measuring the flow parameters of two-phase-flow in the gas-separator in this paper, combining with the criteria equation and experiment data, the mathematical model, which can quantitatively describe the relation between separation efficiency and the gas fluid ratio by using numerical method, is established; and the relational plate is plotted between the separation efficiency and the separation time in the case of different gas fluid ratio, which can provide theoretical foundation for the optimization of the well production parameters and the geometric structure parameters of the oil/gas separator under the submersible electrical pump.

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Gaaseidnes, Knut, and Joseph Turbeville. "Separation of Oil and Water in Oil Spill Recovery Operations." Pure and Applied Chemistry 71, no. 1 (January 1, 1999): 95–101. http://dx.doi.org/10.1351/pac199971010095.

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The separation of water from oil that is collected in any oil spill recovery operation is a continuing and necessary requirement during every stage of the effort. Its importance is reflected in the cost of transport and storage of large volumes of oily water, the salvage value of separated oil and the added labor costs associated with long-term recovery operations.This paper addresses the effects of weathering and emulsion generation which increase the problems normally associated with water extraction. Separation theory, practical separation technology and recommendations for the future direction of research and development are presented.

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Yong, Jiale, Jinglan Huo, Feng Chen, Qing Yang, and Xun Hou. "Oil/water separation based on natural materials with super-wettability: recent advances." Physical Chemistry Chemical Physics 20, no. 39 (2018): 25140–63. http://dx.doi.org/10.1039/c8cp04009e.

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Kokal, Sunil L., and Abdulla Al Ghamdi. "Oil/Water Separation Experience From a Large Oil Field." SPE Production & Operations 21, no. 03 (August 1, 2006): 365–71. http://dx.doi.org/10.2118/93386-pa.

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Bybee, Karen. "Oil/Water-Separation Experience From a Large Oil Field." Journal of Petroleum Technology 57, no. 12 (December 1, 2005): 41–42. http://dx.doi.org/10.2118/1205-0041-jpt.

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van Schie, Louis. "Oil/water separation: Suparator meets the oil/water challenge." Filtration + Separation 50, no. 3 (May 2013): 50–51. http://dx.doi.org/10.1016/s0015-1882(13)70132-0.

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Xu, Hongxiang, Jiongtian Liu, Yongtian Wang, Gan Cheng, Xiaowei Deng, and Xiaobing Li. "Oil removing efficiency in oil–water separation flotation column." Desalination and Water Treatment 53, no. 9 (April 22, 2014): 2456–63. http://dx.doi.org/10.1080/19443994.2014.908413.

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Nunez, Cristian, Ramin Dabirian, Ilias Gavrielatos, Ram Mohan, and Ovadia Shoham. "Methodology for Breaking Up Nanoparticle-Stabilized Oil/Water Emulsion." SPE Journal 25, no. 03 (March 12, 2020): 1057–69. http://dx.doi.org/10.2118/199892-pa.

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Summary A state-of-the-art portable dispersion characterization rig (P-DCR) is applied to study emulsions with Exxsol™ mineral oil (ExxonMobil Chemical Company, Houston, Texas, USA), commercial distilled water, and hydrophobic silica nanoparticles (NPs) as emulsifiers. The emulsion is prepared in the P-DCR batch-separator vessel, whereby the separation kinetics are observed and recorded. In this study, emulsion breakup by the integration of oil extraction/water addition and a stirring process is investigated, which is formed with 25% water cut (WC) and 0.01% w/w hydrophobic NPs (dispersed in the oil phase). The experimental data are divided into three data sets: oil extraction only, oil-extraction/pure-water addition, and oil-extraction/water with hydrophilic NP addition. For oil extraction only (Data Set 1), the WC of the fluid mixture increases, and for a sufficient volume extraction, phase inversion occurs that results in a complete separation of the oil and water. The minimum final required NP concentration for a fast separation, defined as the minimum concentration of NP required to begin the phase separation of the emulsion, is approximately 0.0045%. The acquired data for oil-extraction/pure-water-addition (Data Set 2) result in a faster breakup of the emulsion, as compared with oil extraction only. The oil-extraction/pure-water-addition process increases the system WC faster, reaching the phase-inversion point sooner. For the oil-extraction/pure-water-addition, the final lowest WC and NP concentrations are approximately 37% and 0.006% w/w, respectively, for fast separation. Thus, it can be concluded that the NP concentration and the WC are related. Repetitive oil-extraction/pure-water-addition cycles enable determination of the combined effects of the WC and NP on the separation process. A relatively stable emulsion is reached after approximately 2 minutes from the beginning of each cycle, which enables determining whether a quick separation occurs at the current cycle. Data Set 3 (oil-extraction/water with hydrophilic NP addition) results reveal that dispersing hydrophilic NPs in water does not promote emulsion breakup. On the contrary, the NPs produce a slightly more stable emulsion. The separation process, however, does not differ significantly even for high hydrophilic NP concentrations, emphasizing the dominant role of the hydrophobic particles (dispersed in the base-case emulsion).

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Ahn, Joon, and Seongil Jang. "Effects of Oil Wettability on the Performance of a Cyclone-Type Oil Separator." International Journal of Air-Conditioning and Refrigeration 26, no. 01 (March 2018): 1850010. http://dx.doi.org/10.1142/s2010132518500104.

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The effects of oil wettability on the performance of a cyclone-type oil separator was studied through in situ experimentation and in a real refrigeration system. Based on previous research, the geometry of the oil separator in the present study was designed with an oil recovery device installed at its bottom to mount it on the actual refrigerator. The performance of the oil separator without surface treatment was predicted by applying design correlations proposed in the open literature, which were then compared with the experimental data. Through surface treatment, oleophilic or oleophobic properties were given to the inner wall and helix of the oil separator, and its performance was measured in a real refrigeration system. Oil wettability had a great effect on the performance of the oil separator, and in order to obtain high separation efficiency, oleophilic properties were found to be advantageous not only in the inner wall but also in the helix.

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Yong, Jiale, Qing Yang, Jinglan Huo, Xun Hou, and Feng Chen. "Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation." Nano Select 2, no. 8 (February 20, 2021): 1580–88. http://dx.doi.org/10.1002/nano.202000246.

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Ma, Wenjing, Qilu Zhang, Dawei Hua, Ranhua Xiong, Juntao Zhao, Weidong Rao, Shenlin Huang, Xianxu Zhan, Fei Chen, and Chaobo Huang. "Electrospun fibers for oil–water separation." RSC Advances 6, no. 16 (2016): 12868–84. http://dx.doi.org/10.1039/c5ra27309a.

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Journal articles on the topic 'Oil Separation'

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