KR101431622B1 - Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith - Google Patents

Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith Download PDF

Info

Publication number
KR101431622B1
KR101431622B1 KR1020140027820A KR20140027820A KR101431622B1 KR 101431622 B1 KR101431622 B1 KR 101431622B1 KR 1020140027820 A KR1020140027820 A KR 1020140027820A KR 20140027820 A KR20140027820 A KR 20140027820A KR 101431622 B1 KR101431622 B1 KR 101431622B1
Authority
KR
South Korea
Prior art keywords
liner
oil
region
discharge portion
wall
Prior art date
Application number
KR1020140027820A
Other languages
Korean (ko)
Inventor
최금식
장호길
김동관
임재호
남병욱
최재호
이영우
김재래
유진아
Original Assignee
선보공업주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 선보공업주식회사 filed Critical 선보공업주식회사
Priority to KR1020140027820A priority Critical patent/KR101431622B1/en
Application granted granted Critical
Publication of KR101431622B1 publication Critical patent/KR101431622B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/081—Shapes or dimensions

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The present invention relates to a de-oiling liner for a de-oiling hydrocyclone step that is used in a produced water treatment system for treating produced water containing a large amount of oil which is generated during crude oil extraction. According to the present invention, an inner wall structure of the liner is optimized, and thus the efficiency of separation of an oil component from the produced water containing a large amount of oil can be more effectively improved than in the liners of the related art. The liner according to the present invention is divided into a first area, a second area, and a third area having different inclinations in a liner inner wall between one side end part of the liner where an upper discharge unit is positioned and the other side end part of the liner where a lower discharge unit is positioned. The liner inner wall of the first area has a curved surface shape with an exponential function form. The oil-containing produced water that is introduced through an introduction portion which is positioned in the first area is subjected to a vortex generated by a centrifugal force so that the oil component having a relatively lower specific gravity in the produced water is discharged through the upper discharge unit and a water component having a relatively higher specific gravity in the produced water is discharged through the lower discharge unit positioned in the third area through the second area positioned below the first area.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an oil-removing liner having a multi-

 A liner used in a De-oiling Hydrocyclone step included in a Produced water treatment system for treating production water containing a large amount of oil generated during crude oil picking, And it is an important object of the present invention to improve the oil separation efficiency by optimizing the inner wall structure of the liner.

Produced Water is Oily Wastewater which occupies the largest proportion among the wastes generated during the oil production process, and is essentially water entrapped in groundwater discharged to the earth surface during oil production. The production of one barrel of oil is about 7 to 10 barrels. These are highly toxic and usually contain oils, greases and other hydrocarbons, as well as large amounts of salts, metals and trace elements. Managing it can have significant environmental impacts and cost a lot (1).

The oil component extracted from the oil sands is heavy, sticky black viscous oil called bitumen, which accounts for about 10-12% of the oil sands (2). Since natural crude oil is lighter than water but bitumen has a similar weight to water, the bitumen does not flow in boreholes or pipelines in the natural state, so steam is added or diluent (ultra-hard crude oil or light petroleum product) Mixed and reduced in specific gravity and viscosity, and then transported to an oil pipeline. Because bitumen contains a large amount of water, it is necessary to separate the oil by using a primary separation FWKO (Free Water Knock-Out), a secondary separation as demulsifier chemicals, and an electric field (Electrostatic Field) (3, 4). The production water after the recovery of the oil component still contains a large amount of oil and solvent components, and in order to release or recycle it, the production water treatment process should be performed with water containing less than 5 ppm of oil.

Although there are techniques using adsorbents as an existing method of treating oil from the production water, this method requires a post-treatment process to treat the used adsorbent as well as the cost of adding or exchanging the adsorbent when the adsorbent is saturated (5,6). As another method for treating oil of production water, there is a biological treatment method using microorganisms, yeast, etc. However, since the treatment takes a long time, there is a problem that the equipment becomes large (5-7).

In order to overcome these problems, advanced oxidation techniques using photocatalysts, electrolysis, ultrasonic waves, UV, etc. have been introduced, but they are costly and difficult to maintain. Therefore, it is necessary to develop an economical and environmentally friendly method to enhance the efficiency of removing oil components (8-10).

As mentioned above, the production water is wastewater generated from petroleum refining process or bitumen extraction process of oil sand, and the production water can not be used for agriculture and food because it contains oil component. It is water. The production water treatment methods are roughly classified into three types: physical treatment, biological treatment, and chemical treatment (5). Among them, the most widely used methods are physical treatment methods, and the methods with high separation efficiency are biological treatment methods and chemical treatment methods.

Physical treatment methods are the easiest and easiest methods to use, such as Filtration, Sorption, Gravity, Centrifugal force, Membrane, Distillation, Skimmer, (Flotation) [6]. The advantage is that it is easier to control than chemical or biological treatment techniques, and the disadvantage is that it is difficult to expect high separation efficiency with physical treatment technology.

In order to reliably remove the organic matter contained in the production water, methods using chemical reaction or biological reaction are additionally needed. Currently the most used techniques are filtration, sorption (adsorption / absorption) and gravity sedimentation. Filtration and sorption have the advantage that they can be obtained easily. Gravity settling is advantageous in that the drying cost of the apparatus is higher than that of filtration or sorption, but the maintenance cost is lower.

Biological treatment methods can be classified into microbial treatment methods and treatment methods using activated sludge. Methods of treatment with microorganisms can be divided into aerobic microbiology and anaerobic microbiology. Among biological treatment methods, aerobic microorganism treatment is most commonly used. Trickling filter, Sequencing Batch Reactor (SBR), and Biological Aerated Filter are some of the biological treatment methods.

The anaerobic microbial treatment method is advantageous in cost efficiency when the concentration of the pollutant is low. The reed bed method is widely used and the average hydrocarbon separation efficiency is 96% at the production water treatment of 3,000 m3 / day (5,7).

Activated sludge is a type of aerobic microorganism that is one of the most used techniques in water treatment process. It is mainly used with the skimmer technology and it is known that it has a separation efficiency of about 98 ~ 99% at 20 days of Solids Retention Time (SRT) (5).

Chemical treatment methods include oxidation, coagulation, and demulsifier chemicals. In recent years, there has been a great deal of research on electrochemical processes and photocatalytic treatments using electricity. Research is underway (5).

Oxidation is mainly used to decompose refractory chemicals. Strong Oxidant, Catalyst, Irradiation, etc. are used. At present, AOP (Advanced Oxidation Process) technology is developed and commercialized, and AOP simultaneously generates ultraviolet wavelengths and ozone generating wavelengths in a discharge lamp, so that a large amount of OH radicals And oxidation treatment. Condensation is used to remove suspended solids and colloidal particles, and it is inefficient to remove dissolved substances (5, 10).

The present invention relates to a de-oiling hydrocyclone for removing oil contained in a produced water treatment system for treating production water containing a large amount of oil generated during crude oil collection as shown in FIG. 1, To the liner used in the step. The liner used in the hydrocyclone step is a key component that physically separates the oil from the production water containing the oil and it is general that the separation efficiency of the oil is determined according to the performance of the liner .

As the environmental regulations at the time of discharging the produced water to the ocean become strict, the efficiency of the de-oiling hydrocyclone for oil removal is treated very importantly, and the liner The optimized design structure of the liner is essential. In the present invention, the efficiency of oil separation can be increased by newly changing the internal structure or internal shape of the liner to optimize it.

Published Japanese Patent Application No. 199-0045521 (published June 25, 1999)

(1) Tellez, GT, Nirmalakhandan, N. and Gardea-Torresdey, JL, "Evaluation of Biokinetic Coefficients in Degradation of Oilfield Produced Water under Varying Salt Concentrations", Wat. Res., 29 (7), 1711-1718 ). (2) Park, Y. K., Choi, W. C., Jeong, S. Y. and Lee, C. W., "High Value Added Technology of Oilsands", Korean Chem. Eng. Res. (HWAHAK KONGHAK), 45 (2), 109-116 (2007). (3) Park, K., Han, S. D., Han, H. J., Kang, K. S., Bae, W. and Rhee, Y. W., "Technology Trend of Oil Treatment for Oilsands by the Patent Analysis ", CLEAN TECHNOLOGY, 15 (3), 210-223 (2009). (4) Park, K., Han, SD, Noh, SY, Bae, W. and Rhee, YW, "Characteristics of Separation of Water / Bitumen Emulsion by Chemical Demulsifier", CLEAN TECHNOLOGY, 15 (2009). (5) Fakhru'l-Razi, A., Pendashteh, A., Abdullah, LC, Biak, DRA, Madaeni, SS and Abidin, ZZ, "Review of Technologies for Oil and Gas Produced Water Treatment" , 170 (2-3), 530-551 (2009). (6) Murray-Gulde, C., Heatly, JE, Karanfil, T., Rodgers Jr., JH and Myers, JE, "Performance of a Hybrid Reverse Osmosis-Generated Wetland Treatment System for Brackish Oil Field Produced Water" , 37 (3), 705-713 (2003). (7) Xu, P., Drewes, JE, Heil, D. and Wang, G., "Treatment of Brackish Produced Water Using Carbon Aerogel-based Capacitive Deionization Technology", Water Res., 42 (10-11), 2605 -2617 (2008). (8) Cha, Z., Lin, C., Cheng, C. and Hong, PKA, "Removal of Oil and Oil Sheen from Produced Water by Pressure- assisted Ozonation and Sand Filtration", Chemosphere, 590 (2010). (9) McCormack, P., Jones, P., Hetheridge, MJ and Rowland, SJ, "Analysis of Oilfield Produced Waters and Production Chemicals by Electrospray Ionization Multi-Stage Mass Spectrometry (ESI-MSn) (15), 3567-3578 (2001). (10) Shpiner, R., Vathi, S. and Stuckey, DC, "Treatment of Oil Wells" Produced Water "by Waste Stabilization Ponds: Removal of Heavy Metals", Water Res., 43 (17), 4258-4268 2009).

The present invention relates to a de-oiling hydrocyclone liner used in a produced water treatment system for treating a large amount of oily water generated during crude oil sampling, and is characterized in that it separates water and oil components from the produced water containing oil To improve the efficiency and increase the throughput to reduce the running cost.

More specifically, the inner wall structure of the liner is divided into a first region and a second region in which the inclination of the inner wall of the liner from the one end portion of the liner where the upper discharge portion is located to the other end portion of the liner where the lower discharge portion is located, It is possible to more effectively swirl in the liner to thereby separate the oil component and the water component due to the difference in the specific gravity of the produced water containing the oil.

That is, the liner inner wall of the first region in which the production water containing oil and the upper discharge port are located is in the form of a gentle curve in the form of an exponential function, and the inner wall of the liner in the second region, So that the liner inner wall of the present invention has a multi-stage inner wall slope.

In addition, in the present invention, the shape of the introduction portion into which the produced water containing oil is introduced is not an ordinary rectangular or circular opening, but an elliptical opening shape so that a production water containing a larger amount of oil can be carried on the inner wall of the liner So that the throughput can be further increased, and the problem of the processing capacity and the processing cost is solved.

The hydrocyclone liner having a hollow structure capable of separating water and oil components from the produced water containing the oil of the present invention comprises an inlet portion into which the produced water containing the oil is introduced; An upper discharge portion through which the oil component having a relatively low specific gravity is discharged in the produced water; And a lower discharge portion through which the water component having relatively high specific gravity is discharged in the produced water.

Wherein the upper discharge portion is located at the center of one end of the liner of the hollow structure and the lower discharge portion is located at the center of the other end of the opposite end of the hollow structure, A first region, a second region and a third region in which slopes of the inner wall of the liner from the one end of the liner to the other end of the liner where the lower discharge portion is located are different from each other.

The produced water containing oil introduced through the inlet portion located in the first region is discharged through the upper outlet portion due to the vortex generated by centrifugal force and the oil component having a relatively low specific gravity in the produced water is discharged through the upper outlet portion, The water component having a relatively high specific gravity is discharged through the lower discharge portion located in the third region through the second region located in the lower portion of the first region.

The maximum diameter of the liner inside wall of the first region D H, the maximum diameter of the liner inside wall is D S, the diameter of the upper outlet of the second zone D 0, and the diameter of the lower portion is discharged D U respectively 0.03≤ D 0 / D H ? 0.08, 0.4? D S / D H ? 0.6, and 0.2? D U / D H ? 0.3.

Particularly, the diameter D of the inner wall of the liner in the first region having a curved shape of the exponential function shape is set such that, in the longitudinal direction z along the liner center axis from the upper discharge portion to the lower discharge portion,

Figure 112014023070720-pat00001
(Where the constant a is a constant value that affects the slope changing in the form of an exponential function and has a value ranging from 6 to less than 21, and z in the longitudinal direction varies from 0 to 225 ), The liner inner wall (D s ) in the second region has a size of the inner angle 2b ranging from 1.3 o to 1.5 o .

In the liner structure of the present invention, it is preferable that the maximum diameter D H of the inner wall of the liner in the first region is 30 mm to 70 mm, and the cross-section of the introduction portion into which the produced water containing the oil is introduced has a long axis and a short axis The ratio is preferably from 0.2 to 0.5 in terms of the processing capacity.

In the hydrocyclone liner of the hollow structure having the multi-stage inner wall slope of the present invention, the inner wall shape of the first region through which the produced water flows is formed into an exponential function curve shape rather than a straight line so that the produced water containing oil flows The oil and water can be separated more efficiently because the speed is further increased and the generated centrifugal force is larger than that of a conventional liner having a usual single inclined surface when passing through the first region.

In addition, the shape of the opening or through-hole of the inlet portion of the liner first region into which the produced water including the oil flows is in the form of an ellipse, unlike a typical rectangular or circular shape, Can flow through the inner wall, thereby increasing the throughput.

Figure 1 is a diagrammatic representation of a typical production water treatment system.
2 is a diagram schematically showing a conventional liner structure.
3 is a diagram schematically illustrating the liner structure of the present invention.
Fig. 4 is a computational result of the central axis velocity, the pressure and the concentration distribution of the comparative example (a) of the conventional liner structure and the liner (b) of the present invention.
Fig. 5 shows the result of computer simulation of the central axis velocity distribution and the tangential velocity distribution of the comparative example (a) of the conventional liner structure and the liner (b) of the present invention.
Fig. 6 shows the result of computational simulation of the separation efficiency of the comparative example for each droplet size.
Fig. 7 shows the results obtained by comparing the separation efficiencies of the present invention and the comparative example when the droplet size is 30 mu m.

Hereinafter, the structure of the hydrocyclone liner having a hollow structure for separating water and oil components from the produced water containing the oil of the present invention will be described in detail.

A common production water treatment system is the production of water (produced water) produced in the production of oil / gas in the oil / gas field, which can be reused in response to environmental regulations or clean water And FIG. 1 schematically shows such a production water treatment system.

 As can be seen from FIG. 1, a mixture of oil and water separated in a three-phase separator is separated into a water and an oil component from a hydrocyclone, and finally produced water is discharged through a filter.

The present invention relates to a structure of a liner used in the de-oiling hydrocyclone process, and optimizes the inner wall structure of the liner through computer simulation and experiments to improve oil separation efficiency Thereby maximizing the processing capacity and enabling an economical production water treatment.

First, a typical conventional liner structure is shown in FIG. As shown in FIG. 2, in the conventional liner, there is an inlet for introducing produced water containing oil into the upper side of the liner, and the produced water flows down along the inner wall of the liner. At this time, do.

Due to the difference in specific gravity between the oil component and water, the low specific gravity oil component is collected while forming a vortex at the center of the liner and discharged through the upper discharge portion existing above the inlet portion of the liner, Flows along the inner wall of the liner and finally discharged through the lower outlet.

In a typical liner structure, a linear hollow region in which the diameter does not change constantly along the liner at the introduction portion, a first reduction region where the diameter of the constant angle (2a) decreases, a more gentle angle 2b), and a third region where the diameter is kept constant.

The inner diameter of the inner liner is defined as a straight hollow region A1 maintaining a constant diameter D H , a first hollow region A1 having a diameter of D S , reduced area (A2), a constant in the second reduction zone (A3) (keeping the angle is 2b) and a diameter of the lower outlet portion diameter (D U) of the second further reduced diameter with a gentle slope compared with the first reduction zone And a third area A4 that is maintained.

The structure of the liner proposed in the present invention is similar to that of the structure of Fig. 3, but unlike the conventional liner of Fig. 2, the liner at the one end of the liner where the upper discharge portion is located, A slope of the inner wall of the liner leading to the end portion is divided into a first region, a second region and a third region, which are different from each other.

If the maximum diameter of the inner wall of the liner in the first region is D H , the maximum diameter of the inner wall of the liner in the second region is D S , the diameter of the upper discharge portion is D 0 and the diameter of the lower discharge portion is D U , D 0 / D H ≤ 0.08, 0.4 ≤ D S / D H ≤ 0.6, and 0.2 ≤ D U / D H ≤ 0.3.

In the first region, the inner wall of the liner has a curved shape in the form of an exponential function. In this case, the diameter D in the longitudinal direction z along the liner center axis from the upper discharge portion to the lower discharge portion is expressed by the following equation (1).

Figure 112014023070720-pat00002
(One)

In this case, a value affecting the slope of the exponential function in the first region is a constant value ranging from 6 to 21, and the z value in the longitudinal direction varies from 0 to 225.

The inner diameter D of the liner inner wall D is selected in the range of 1.3 o to 1.5 o in the second region and the maximum diameter D H of the inner wall of the liner in the first region is in the range of 30 mm to 70 mm .

Hereinafter, the oil separating performance of the conventional liner structure divided into four regions and the liner structure of the present invention divided into three regions will be described in detail.

[ Example  One]

First, in order to compare the performance of the liner structure of the present invention with the performance of the conventional liner structure, flow characteristics of the oil component and the water component in the liner structure were analyzed through computer simulation. Since the separation of water and oil is mainly caused by the vortex generated when the mixture of oil and water flows down along the liner tube wall, as mentioned above, the area of the last lower outlet portion where the effect of the vortex is relatively low Both liner were made identical.

Also, the liner structure of the present invention has a portion where the diameter is constantly maintained only at a portion communicating with the introduction portion, and a first region where the inner wall of the liner has a curved shape of an exponential function and is decreased from below the portion communicating with the introduction portion. (See FIG. 3).

The concrete structure of the sheath liner used at this time is shown in Table 1 below.

The liner structure of the present invention (embodiment) Conventional liner (comparative example) DH (maximum diameter of the first region) 60 mm 60 mm DU (diameter of bottom discharge part) 15 mm 15 mm DS (maximum diameter of the second area) 30 mm 30 mm D0 (diameter of upper discharge portion) 4.2 mm 4.2 mm L1 (length of the first area) 90 mm 16 mm LH (total liner length) 1416 mm 1392 mm The slope of the first region

Figure 112014023070720-pat00003
2a = 20 o The slope of the second region 2b = 1.5 o 2b = 1.34 o Introduction area 5.517 × 16 5.517 × 16

Figs. 4 (a) and 4 (b) are results of computer simulation of the center axis velocity, pressure and concentration distribution of the liner (b), which is a comparative example (a) .

In the conventional liner structure of FIG. 4 (a), it is confirmed that there exists a region having a positive (+) center axial velocity at the upper end of the liner center portion. In the case of the concentration distribution of the oil component in the liner, (50 ㎛), and it is found that the higher the concentration of the droplet is, the higher the concentration is in the vicinity of the upper discharge portion. I could.

4 (b), which is a result of the computer simulation of the liner structure of the present invention, it can be seen that the length of the region having the center axial velocity (+) is longer than that of the conventional liner structure, Structure, which means that the oil component with low specific gravity can be discharged more efficiently through the upper discharge portion. Also, it can be seen that the concentration distribution of the oil component also has the highest concentration point in the region of the upper discharge portion, and as a whole, the liner structure of the present invention is more effective in separating the oil component than the conventional liner structure.

5 is a graph showing the relationship between the central axis velocity distribution and the tangential velocity distribution of the comparative example (a) of the conventional liner structure and the liner (b) of the present invention at a specific position (Z = 1/2 D S , Z = D S ). It can be seen that the liner structure of the present invention having a reduced diameter in the form of an exponential function of the present invention has a relatively large central axis velocity in comparison with a conventional liner structure in which the diameter is reduced at a constant slope (or a certain angle) It can be seen that the difference in the speed increases as the distance to the bottom of the first area (i.e., closer to the second area) increases. In addition, it was confirmed that the liner of the present invention is also better in the tangential velocity distribution along with the central axial velocity distribution.

FIG. 6 shows the result of calculating the liner separation efficiency according to the size of the droplet when using the conventional liner structure as a comparative example, and FIG. 7 shows the results obtained by comparing the liner separation efficiency of the present invention and the comparative example, to be.

6, it was confirmed that all of the results converge at a constant separation efficiency within about 2 seconds. As the size of the droplet increases, the separation efficiency is improved. In the case of the droplet of about 50 μm, As shown in Fig.

In order to compare the separation efficiencies of the oil droplets of the liner of the present invention, the comparison was made for the case of droplets having a size of 30 mu m as shown in Fig. 7. The liner structure in which the diameter decreases in the form of the exponential function of the present invention It was confirmed that the separation efficiency was improved by about 8.7% with respect to the droplet of 30 mu m in comparison with the conventional liner structure in which the diameter was reduced by the inclination.

[ Example  2]

Based on the results of the computer simulation, an experiment was conducted to fabricate a liner structure having a reduced diameter in the form of an exponential function having the same structure as in Example 1, and to remove oil components from the produced water containing oil The specific experimental conditions and the oil removal efficiency are shown in Tables 2 and 3 below.

In the actual separation experiment, the cross-sectional structure of the introduction part introducing the production water containing oil was changed to the elliptical shape instead of the rectangular shape, unlike the first embodiment 1. In this case, the ratio of the major axis to the minor axis of the elliptical type inlet was in the range of 0.2 to 0.5 Respectively.

By thus changing the cross-section of the inlet section to an elliptical shape, Produced water containing more oil can be introduced into the liner through which fluid, including oil, can flow effectively through the inner wall of the liner There are advantages.

Experiment No. The introduced flow rate Q F The lower discharge portion flow rate Q U The upper discharge unit flow rate Q 0 Inlet pressure
P F Lower outlet pressure P U Top outlet pressure P O One 57.34 53.78 3.56 4.02 1.83 0.24 2 57.18 53.38 3.8 4.04 1.84 0.27 3 57.22 53.41 3.81 4.05 1.86 0.24

Experiment No. Inlet oil concentration
[ppm] The lower discharge portion
Oil concentration [ppm] Separation efficiency
[%] One 5721.6 432.9 0.92 2 3618.4 298.1 0.92 3 3555.2 275.5 0.92

In Table 2, the volume flow rate Q is in units of liter / min, the unit of pressure is bar, and the pressure drop ratio (PDR) is varied while changing the flow ratio Q 0 / Q H in the range of 0.06 to 0.07. Were all held at 1.7.

The separation efficiency of the oil components observed through these experiments was defined as the value obtained by dividing the oil concentration at the lower outlet by the inlet oil concentration minus 1. From the results of Table 3, %, Respectively.

100: Number of oil wells 110: Three phase primary separation tank
120: Three phase secondary separation tank 130: Water removal tank
140: dry by-product 150: transfer pump
160: Hydrocyclone 170: Gas floating tank
180: Media filter 190: Produced water discharge
210: inlet part 220: upper discharge part
230:

Claims (8)

A hollow cyclone liner for separating water and oil components from produced water containing oil,
An inlet for introducing production water containing the oil; An upper discharge portion through which the oil component having a relatively low specific gravity is discharged in the produced water; And a lower discharge portion through which the water component having relatively high specific gravity is discharged in the produced water,
Wherein the upper discharge portion is located at the center of one end of the liner of the hollow structure and the lower discharge portion is located at the center of the other end of the opposite end of the hollow structure,
A first region, a second region, and a third region in which inclination of the inner wall of the liner is different from one end of the liner where the upper discharge portion is located to the other end of the liner where the lower discharge portion is located,
The diameter D of the inner wall of the liner of the first region is changed in the longitudinal direction z along the liner center axis from the upper discharge portion toward the lower discharge portion as shown in Formula 1, The production water containing oil introduced through the introduction portion located in the first region has a curved shape in the form of an exponential function and the oil component having a relatively low specific gravity in the production water due to the vortex generated by the centrifugal force, And a water component having a relatively high specific gravity in the production water is discharged through a lower discharge portion located in a third region through a second region located in a lower portion of the first region, Of the hydrocyclone liner having a hollow structure.
Figure 112014058599106-pat00014
(One)
(Note that an a value that affects the exponential slope in the first region has a value between 6 and 21, and a value in the longitudinal direction z ranges from 0 to 225). The method according to claim 1,
If the maximum diameter of the inner wall of the liner in the first region is D H , the maximum diameter of the inner wall of the liner in the second region is D S , the diameter of the upper discharge portion is D 0 , and the diameter of the lower discharge portion is D U ,
0.03? D 0 / D H ? 0.08, 0.4? D S / D H ? 0.6, and 0.2? D U / D H ? 0.3. delete The method according to claim 1,
Wherein the inner liner wall (D S ) in the second region has a size of the inner angle (2b) ranging from 1.3 o to 1.5 o . The method according to claim 1,
Wherein the maximum diameter D H of the inner wall of the liner in the first region is from 30 mm to 70 mm. The method according to claim 1,
Wherein a cross-section of an inlet portion into which the produced water containing the oil is introduced is an elliptical cross-section. The method according to claim 6,
Wherein the ratio of the long axis to the minor axis of the elliptical inlet portion is 0.2 to 0.5. A hydrocyclone liner having a hollow structure having a multi-stage inner wall slope as set forth in any one of claims 1 to 4 and claim 7, characterized in that, by the centrifugal force generated inside the liner, A method for separating oil and water from production water.
KR1020140027820A 2014-03-10 2014-03-10 Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith KR101431622B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140027820A KR101431622B1 (en) 2014-03-10 2014-03-10 Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140027820A KR101431622B1 (en) 2014-03-10 2014-03-10 Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith

Publications (1)

Publication Number Publication Date
KR101431622B1 true KR101431622B1 (en) 2014-08-21

Family

ID=51750768

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140027820A KR101431622B1 (en) 2014-03-10 2014-03-10 Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith

Country Status (1)

Country Link
KR (1) KR101431622B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150129559A (en) * 2014-05-12 2015-11-20 삼성중공업 주식회사 Liner of hydrocylclone

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793924A (en) * 1985-06-17 1988-12-27 B.W.N. Vortoil Rights Co. Pty. Ltd. Cyclone separator
KR0171634B1 (en) * 1990-08-30 1999-02-18 피터 존 울리 High efficiency liquid/liquid hydrocyclone
US7011219B2 (en) * 2003-07-02 2006-03-14 Petreco International, Ltd. Erosion-resistant hydrocyclone liner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793924A (en) * 1985-06-17 1988-12-27 B.W.N. Vortoil Rights Co. Pty. Ltd. Cyclone separator
KR0171634B1 (en) * 1990-08-30 1999-02-18 피터 존 울리 High efficiency liquid/liquid hydrocyclone
US7011219B2 (en) * 2003-07-02 2006-03-14 Petreco International, Ltd. Erosion-resistant hydrocyclone liner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150129559A (en) * 2014-05-12 2015-11-20 삼성중공업 주식회사 Liner of hydrocylclone
KR101599462B1 (en) 2014-05-12 2016-03-03 삼성중공업 주식회사 Liner of hydrocylclone

Similar Documents

Publication Publication Date Title
Sun et al. Physical pretreatment of petroleum refinery wastewater instead of chemicals addition for collaborative removal of oil and suspended solids
CN1246064C (en) Combined degassing and flotation tank
CN111170552B (en) Oily sewage pretreatment method and device without air floatation
US20130118988A1 (en) Multistage daf-advanced oxidation system
AU2001294085A1 (en) Combined degassing and flotation tank
US10927309B2 (en) Conserving fresh wash water usage in desalting crude oil
KR101490147B1 (en) Treating method of Produced Water
CN102531291A (en) Standard discharge treatment system for rock debris wastewater
CN111170394B (en) Emission reduction method and device for volatile organic compounds in oily sewage cleaning treatment
TW201641437A (en) Method for separating pollutant from wastewater and system thereof
Li et al. Media coalescence filtration as a novel method for pretreatment of refinery wastewater
CN111170551B (en) Method and device for recovering oil in cleaning treatment of oily sewage
US10071928B2 (en) Systems and methods for de-oiling and total organic carbon reduction in produced water
KR101431622B1 (en) Exponential Deoiling Liner with Multi Spole and The Separation Method Therewith
CN113277597A (en) Method and device for separating oil-containing wastewater heterojunction microchannel
US20190233315A1 (en) Process and facility for treating produced water from an oil & gas field
KR101445101B1 (en) Hydrocyclone Liner with Modified Inner Stuctucture and Oil-Removal Method from Produced Water
Al-Ani Treatment of oily wastewater produced from old processing plant of north oil company
CN105366834A (en) Polymer-contained sewage processing system of offshore platform
KR20090011279A (en) Apparatus for separating oil from water
MX2014011783A (en) System and method for treating water.
CN104944496A (en) Phenol removing method for sodium sulfate waste water of coal tar processing
CN114314918B (en) Oil removal and oil removal process for coal-based needle coke wastewater
Oshinowo et al. Separation processes for sustainable produced water treatment and management
CN211813847U (en) Oil gas field effluent treatment plant

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20170725

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20190910

Year of fee payment: 6