Emulsion oil-water separation device and separation method

Abstract

The invention discloses an emulsion oil-water separation device and a separation method.The emulsion oil-water separation device comprises an emulsion inlet and a tank body, the tank body comprises a filler sleeve and a drainage guide pipe, the filler sleeve is fixedly arranged in the tank body in the vertical direction, and the drainage guide pipe is fixedly arranged in the tank body in the vertical direction; an opening in the upper end of the filler sleeve is close to the emulsion inlet, the filler sleeve is filled with first oil-water separation blocks and second oil-water separation blocks, the first oil-water separation blocks and the second oil-water separation blocks are alternately arranged in the length direction of the filler sleeve, and the filling blocks on the uppermost layer and the filling blocks on the lowermost layer are the first oil-water separation blocks; the upper end of the drainage guide pipe is connected with the lower end of the first oil-water separation block, and the lower end of the drainage guide pipe is close to the bottom of the tank body. The emulsion oil-water separation device provided by the invention is simple in structure and convenient to mount, can realize demulsification and oil-water separation of different types of emulsions (O / W type and W / O type), and is high in oil-water separation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil-water separation, in particular to an emulsion oil-water separation device and a separation method. BACKGROUND

[0002] An emulsion is a system in which a liquid (dispersed phase) is dispersed in the form of droplets in another liquid (continuous phase) which is immiscible with it, mainly divided into oil-in-water type (O / W type) and water-in-oil type (W / O type). Emulsion is essentially an unstable system, but affected by various factors such as oil-water density difference, surfactant, dispersed phase droplet size, etc., the emulsion can exist for a long time and is difficult to break. Emulsion is very common in various industries, especially in the industrial production process of oil refining and chemical industry, and has a wide source and a large discharge amount. Oily wastewater emulsion is one of the most difficult to treat, with high COD content and complex composition, which has great harm to water and soil, greatly increasing the difficulty and cost of wastewater treatment. Water-containing oil product emulsion also brings many difficulties to the subsequent processing of oil products, and the water that has not been separated enters the subsequent processing process with the oil product, causing changes in operating conditions, device corrosion, affecting product quality, and even abnormal shutdown of the device. Therefore, it is particularly important to use efficient means to break the emulsion and separate the oil and water.

[0003] In industry, the breaking of emulsion and the separation of oil and water are divided into physical method, chemical method and biological method, mainly including heating, gravity sedimentation, centrifugal separation, adsorption separation, membrane separation, electric field breaking, microwave breaking, adding chemical reagents, microbial degradation and combination of various methods. However, for different types of emulsion, the existing different treatment technologies have many problems such as poor applicability, low separation efficiency, high treatment cost and secondary pollution. Therefore, how to realize the breaking of different types of emulsion (O / W type and W / O type) and the separation of oil and water is a problem to be solved at present. SUMMARY

[0004] The main purpose of the present application is to provide an emulsion oil-water separation device and a separation method, which can realize the breaking of different types of emulsion (O / W type and W / O type) and the separation of oil and water, so as to improve the oil-water separation efficiency, facilitate the recovery of oil products in wastewater and reduce the difficulty of wastewater treatment.

[0005] To achieve the above purpose, the present application provides an emulsion oil-water separation device, which comprises an emulsion inlet and a tank body, wherein the tank body comprises:

[0006] A filler sleeve is fixed in the tank body in the up-down direction, an upper end of the filler sleeve is open near the emulsion inlet, the filler sleeve is filled with first and second oil-water separation blocks, the first and second oil-water separation blocks are arranged alternately along the length direction of the filler sleeve, and the uppermost and lowermost filled blocks are both first oil-water separation blocks; and

[0007] A drainage guide pipe is connected with the lower end of the first oil-water separation block, and a lower end of the drainage guide pipe is near the bottom of the tank body.

[0008] Optionally, the emulsion oil-water separation device further comprises:

[0009] A first discharge pipe is arranged on the outer wall of the tank body near the lowermost end of the filler sleeve; and

[0010] A second discharge pipe is arranged on the bottom of the tank body.

[0011] Optionally, when the oil phase density of the emulsion is greater than the water phase density, the first oil-water separation block is oleophilic and hydrophobic material, and the second oil-water separation block is hydrophilic and oleophobic material.

[0012] Optionally, when the oil phase density of the emulsion is less than the water phase density, the first oil-water separation block is hydrophilic and oleophobic material, and the second oil-water separation block is oleophilic and hydrophobic material.

[0013] Optionally, the second oil-water separation block is N, and the first oil-water separation block is N+1, wherein N is an integer greater than or equal to 1.

[0014] Optionally, the lower end of the first oil-water separation block in the lowermost layer is provided with a tapered structure, and the tip angle of the tapered structure is between 90-180°.

[0015] Optionally, the tip angle of the tapered structure is between 120-180°.

[0016] Optionally, the filler sleeve is provided in plurality, the drainage guide pipe is correspondingly provided in plurality, the lower ends of the plurality of drainage guide pipes converge at one place, and a drainage collection pipe is extended at the converging place.

[0017] Optionally, the tank body further comprises:

[0018] An upper distributor is arranged transversely in the tank body to fix the upper end of the filler sleeve; and

[0019] A lower fixer is arranged transversely in the tank body to fix the lower end of the filler sleeve.

[0020] The application further provides a method for separating oil and water by using the emulsion oil-water separation device.

[0021] The emulsion to be separated is introduced into the packing sleeve through the emulsion inlet, and then separated by the first oil-water separation block and the second oil-water separation block, and then the heavy-density liquid is guided to the bottom of the tank body by the drainage guide pipe, and the low-density liquid seeps out from the lower end of the packing sleeve, so as to realize oil-water separation.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] (1) The technical scheme of the application fills the first oil-water separation block and the second oil-water separation block with different properties in the packing sleeve, so that the liquid with large density is transported to the bottom of the tank body by the drainage guide pipe, and the liquid with small density enters the lower part of the packing sleeve after passing through the separation block, thereby realizing oil-water separation.

[0024] (2) The emulsion oil-water separation device provided by the application has simple structure and is easy to install, can realize demulsification and oil-water separation of different types of emulsions (O / W type and W / O type), has high oil-water separation efficiency, is beneficial to recycling of oil in waste water, reduction of waste water treatment difficulty, refining of water-containing oil, and improvement of oil quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0026] Figure 1 FIG. 1 is a structural schematic view of an embodiment of the emulsion oil-water separation device of the application;

[0027] Figure 2 FIG. 2 is a structural schematic view of the packing sleeve in the emulsion oil-water separation device of the application; Figure 1

[0028] Figure 3 FIG. 4 is a structural schematic view of the upper distributor in the emulsion oil-water separation device of the application; Figure 1

[0029] Figure 4 FIG. 6 is a structural schematic view of the lower fixed device in the emulsion oil-water separation device of the application; Figure 1

[0030] Figure 5 FIG. 7 is a comparison diagram of emulsion oil-water separation in the experimental example 1 of the application (FIG. (a) is an emulsion diagram before separation; FIG. (b) is a liquid phase diagram after separation).​​​

[0031] Figure 6 Figures (a) and (b) are micrographs of the water phase before and after separation of the emulsion oil-water separation in Example 1 of the present application (Figure (a) is the emulsion before separation; Figure (b) is the liquid phase after separation).

[0032] The embodiment figure number of the present application is provided as follows:

[0033] Reference Name Reference Name 100 Emulsion oil-water separation device 22 Drainage conduit 1 Emulsion inlet 23 Drainage collector 2 Tank 24 Upper distributor 21 Packing sleeve 25 Lower holder 211 First oil-water separation block 3 First discharge pipe 212 Second oil-water separation block 4 Second discharge pipe

[0034] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0037] In addition, if the present application embodiments involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0038] In view of the problems of poor applicability, low separation efficiency, high treatment cost, secondary pollutants and other problems in the existing oil-water separation treatment technology, the present application provides an emulsion oil-water separation device, which is described with reference to Figures 1 to 4 , Figure 1 Figure 1 is a structural schematic diagram of an embodiment of the emulsion oil-water separation device of the present application.Figure 2 As Figure 1 The structural schematic view at the middle filler sleeve; Figure 3 As Figure 1 The structural schematic view at the upper distributor; Figure 4 As Figure 1 The structural schematic view at the lower fixer. The emulsion oil-water separation device will be described in detail below with reference to the accompanying drawings.

[0039] In the embodiment of the present application, as Figure 1 shown, the emulsion oil-water separation device comprises an emulsion inlet 1 and a tank body 2, the tank body 2 comprises a filler sleeve 21 and a drainage guide pipe 22, the filler sleeve 21 is fixedly arranged in the tank body 2 along the up-down direction, the upper end opening of the filler sleeve 21 is close to the emulsion inlet 1, the filler sleeve 21 is filled with first oil-water separation blocks 211 and second oil-water separation blocks 212, the first oil-water separation blocks 211 and the second oil-water separation blocks 212 are alternately arranged along the length direction of the filler sleeve 21, and the uppermost layer and the lowermost layer of the filler blocks are both the first oil-water separation blocks 211; the upper end of the drainage guide pipe 22 is connected with the lower end of the first oil-water separation block 211, and the lower end of the drainage guide pipe 22 is close to the bottom of the tank body 2.

[0040] The technical scheme of the present application fills the filler sleeve 21 with the first oil-water separation blocks 211 and the second oil-water separation blocks 212 with different properties, the first oil-water separation blocks 211 mainly adsorb liquid with large density, then the liquid with large density is transported to the bottom of the tank body 2 through the drainage guide pipe 22, the first oil-water separation blocks 212 mainly adsorb liquid with small density, and the liquid with small density enters the lower part of the filler sleeve 21 after passing through the separation blocks, so as to realize oil-water separation. The oil-water separation device provided by the present application has the advantages of simple structure, continuous operation, stable operation, high demulsification separation efficiency, low oil content in water and low water content in oil after separation.

[0041] It should be noted that the drainage guide pipe 22 is made of the same material as the first oil-water separation blocks 211, and has a uniform streamline shape, which is beneficial to the downward movement of water droplets / oil droplets along the drainage guide pipe 22.

[0042] Further, please refer to Figure 1The emulsion oil-water separation device further comprises a first discharge pipe 3 and a second discharge pipe 4, the first discharge pipe 3 is arranged on the outer wall of the tank body 2 near the lowermost end of the filler sleeve 21, and the second discharge pipe 4 is arranged at the bottom of the tank body 2. The first discharge pipe 3 is above the oil-water interface, and the low-density liquid phase is discharged. The second discharge pipe 4 is at the bottom of the emulsion separation tank, and the high-density liquid phase is discharged. After the emulsion is separated by the first oil-water separation block 211 and the second oil-water separation block 212, the low-density liquid phase is in the upper part of the tank body 2, and the high-density liquid phase is in the lower part of the tank body 2, respectively discharged through the first discharge pipe 3 and the second discharge pipe 4, and the oil-water interface height is controlled by controlling the discharge speed of the two discharge pipes, so that the tank maintains a certain oil-water interface.

[0043] Preferably, the material types of the first oil-water separation block 211 and the second oil-water separation block 212 are determined according to the density of the oil phase. When the oil phase density of the emulsion is greater than the water phase density, the first oil-water separation block 211 is an oleophilic and hydrophobic material, and the second oil-water separation block 212 is a hydrophilic and oleophobic material, so that the water layer is above the oil-water interface, the first discharge pipe 3 discharges the water phase, the oil layer is below the oil-water interface, and the second discharge pipe 4 discharges the oil phase; when the oil phase density of the emulsion is less than the water phase density, the first oil-water separation block 211 is a hydrophilic and oleophobic material, and the second oil-water separation block 212 is an oleophilic and hydrophobic material, so that the oil layer is above the oil-water interface, the first discharge pipe 3 discharges the oil phase, the water layer is below the oil-water interface, and the second discharge pipe 4 discharges the water phase.

[0044] The filler height of the oleophilic and hydrophobic material and the hydrophilic and oleophobic material is determined according to the type of emulsion. If it is an oil-in-water (O / W) emulsion, the total filler height of the hydrophilic and oleophobic material accounts for 50% to 100%, preferably 70% to 90%, and the total filler height of the oleophilic and hydrophobic material accounts for 0% to 50%, preferably 10% to 30%; if it is a water-in-oil (W / O) emulsion, the total filler height of the hydrophilic and oleophobic material accounts for 0% to 50%, preferably 10% to 30%, and the total filler height of the oleophilic and hydrophobic material accounts for 50% to 100%, preferably 70% to 90%.

[0045] The bulk density of the oleophilic and hydrophobic material and the hydrophilic and oleophobic material is determined according to the particle size of the liquid droplets in the emulsion. When the average particle size of the liquid droplets is >20 μm, the bulk density is 0.2 to 2.0 g / mL, preferably 0.3 to 1.0 g / mL; when the average particle size of the liquid droplets is <20 μm, the bulk density is 0.5 to 5.0 g / mL, preferably 1.0 to 2.0 g / mL.

[0046] The flow rate of the emulsion through the packing sleeve 21 is determined according to the emulsion concentration. When the emulsion concentration is >2000 mg / L, the flow rate of the emulsion through the packing sleeve 21 is controlled at 0.025 m / s and below; when the emulsion concentration is <2000 mg / L, the flow rate of the emulsion through the packing sleeve 21 is controlled at 0.06 m / s and below.

[0047] In order to make the oil-water separation sufficient, please refer to Figure 2 , the second oil-water separation block 212 is N, and the first oil-water separation block 211 is N+1, where N is an integer greater than or equal to 1. By providing multiple separation blocks, multi-stage separation of oil and water can be achieved to improve the separation effect. Meanwhile, the first oil-water separation block 211 is one more than the second oil-water separation block 212, which can ensure that the uppermost and lowermost layers are both first oil-water separation blocks 211.

[0048] Further, please refer to Figure 1 , the lower end of the lowermost first oil-water separation block 211 is provided with a conical structure, and the tip angle of the conical structure is between 90-180°, preferably between 120-180°. By providing the lower end of the first oil-water separation block 211 with a conical structure, the separated high-density liquid phase can be concentrated at the tip of the conical structure, facilitating the drainage of the drainage conduit 22.

[0049] Preferably, please refer to Figure 1 , the packing sleeve 21 is provided with multiple, and the drainage conduit 22 is correspondingly provided with multiple, the lower ends of the multiple drainage conduits 22 converge at one point and extend out of a drainage collection pipe 23 at the convergence point. The lowermost end of the drainage collection pipe 23 is close to the bottom of the tank 2, below the oil-water interface, and immersed in the lower liquid phase. This structure design can separate the emulsion in each packing sleeve 21, then guide the high-density liquid phase to the bottom of the tank 2, and the low-density liquid phase into the upper part, achieving efficient separation.

[0050] Further, please refer to Figure 3 Figure 4 The tank 2 further comprises an upper distributor 24 and a lower fixer 25. The upper distributor 24 is transversely arranged in the tank 2. The upper distributor 24 is a bracket with through holes. Except for the through hole part, the other parts of the upper distributor 24 are sealed to ensure that the emulsion can only flow in through the upper part of the packing sleeve 21. The diameter of the through hole is equal to the outer diameter of the packing sleeve 21, so as to fix the upper end of the packing sleeve 21 in the tank 2. The lower fixer 25 is transversely arranged in the tank 2 to fix the lower end of the packing sleeve 21.

[0051] The application further provides a method for separating oil and water by using the emulsion oil-water separation device.

[0052] The emulsion to be separated is introduced into the packing sleeve 21 through the emulsion inlet 1, and then is separated by the first oil-water separation block 211 and the second oil-water separation block 212, and then the heavy-density liquid is guided to the bottom of the tank body 2 by the drainage guide pipe 22, and the low-density liquid is discharged from the lower end of the packing sleeve 21, so that the oil and water are separated.

[0053] The method for separating oil and water from emulsion provided by the application has simple process operation, low energy consumption, can quickly separate oil and water, can recycle the separated oil phase, and can be continuously operated for a long period.

[0054] The separation method of the application will be further described below in combination with some specific experimental examples.

[0055] Experimental Example 1

[0056] A method for separating oil and water from emulsion, comprising the following steps:

[0057] (1) The solution of organic solvent and water is configured in proportion, wherein the concentration of the organic solvent is 0.5% (5000 mg / L), and the solution is sheared by a shearing emulsifier to configure an emulsion with a droplet particle size of 5-15 μm;

[0058] (2) The emulsion is fed by a raw material pump, the operating temperature is normal temperature, the feeding amount is 1 L / h, the emulsion is introduced into the tank of the emulsion oil-water separation device for oil-water separation, and after the device is stably operated, the organic solvent is obtained from the tank bottom discharge port, the water is obtained from the lower discharge port of the tank, and the oil content in the water and the water content in the oil are analyzed, respectively.

[0059] Experimental Example 2

[0060] A method for separating oil and water from emulsion, comprising the following steps:

[0061] (1) The solution of organic solvent and water is configured in proportion, wherein the concentration of the organic solvent is 0.5% (5000 mg / L), and the solution is sheared by a shearing emulsifier to configure an emulsion with a droplet particle size of 5-15 μm;

[0062] (2) The emulsion is fed by a raw material pump, the operating temperature is normal temperature, the feeding amount is 2L / h, the emulsion enters the tank body of the emulsion oil-water separation device to perform oil-water separation, after the device is stably operated, the organic solvent is obtained from the tank bottom discharge port, the water is obtained from the lower discharge port of the tank, and the oil content in the water and the water content in the oil are analyzed respectively.

[0063] Experimental Example 3

[0064] An emulsion oil-water separation method, comprising the following steps:

[0065] (1) A solution of organic solvent and water is configured in proportion, wherein the concentration of the organic solvent is 0.1% (1000mg / L), and the solution is sheared to be configured into an emulsion with a droplet particle size of 5-15μm by using a shearing emulsifier;

[0066] (2) The emulsion is fed by a raw material pump, the operating temperature is normal temperature, the feeding amount is 1L / h, the emulsion enters the tank body of the emulsion oil-water separation device to perform oil-water separation, after the device is stably operated, the organic solvent is obtained from the tank bottom discharge port, the water is obtained from the lower discharge port of the tank, and the oil content in the water and the water content in the oil are analyzed respectively.

[0067] Experimental Example 4

[0068] An emulsion oil-water separation method, comprising the following steps:

[0069] (1) A solution of organic solvent and water is configured in proportion, wherein the concentration of the organic solvent is 0.1% (1000mg / L), and the solution is sheared to be configured into an emulsion with a droplet particle size of 20-50μm by using a shearing emulsifier;

[0070] (2) The emulsion is fed by a raw material pump, the operating temperature is normal temperature, the feeding amount is 1L / h, the emulsion enters the tank body of the emulsion oil-water separation device to perform oil-water separation, after the device is stably operated, the organic solvent is obtained from the tank bottom discharge port, the water is obtained from the lower discharge port of the tank, and the oil content in the water and the water content in the oil are analyzed respectively.

[0071] The oil content in the water and the water content in the oil after oil-water separation in the experimental examples 1-4 are analyzed by using “HJ 673-2018 Water Quality-Determination of Petroleum Oils and Animal and Vegetable Oils-Infrared Spectrophotometry” (water oil content analysis method) and “GBT 260-2016-Determination of Water Content in Petroleum Products-Distillation Method” (oil water content analysis method), and the analysis results are shown in Table 1. The emulsion before separation and after separation in the experimental example 1 are observed, and Figure 5 is obtained; the water phase microscopic observation of the emulsion before and after separation in the experimental example 1 is performed by using an inverted microscope (Leica DM IL LED), and Figure 6 is obtained.

[0072] Table 1 Analysis results of oil-water separation

[0073]

[0074] From the above table 1, it can be seen that according to the data comparison of oil content in water and water content in oil after separation in experimental examples 1 to 4, after the treatment of the device, the emulsion realizes demulsification and separation, under the condition of the same device structure, the lower the oil content in the original emulsion, the larger the particle droplets in the emulsion, the lower the feed flow rate of the emulsion, the lower the oil content in water and the water content in oil after separation. Figure 5 For comparison pictures of emulsion oil-water separation before and after, by Figure 5 It can be seen that after the treatment of the oil-water separation device of the application, the emulsion is successfully separated into two phases from the milky turbid state, wherein the upper layer is water phase and is relatively clear, and there are large oil droplet groups at the bottom. Figure 6 For water phase microscopic observation pictures of emulsion oil-water separation before and after, by Figure 6 It can be seen that after the treatment of the oil-water separation device of the application, the number of oil droplets suspended in the water phase is greatly reduced, and the oil content is low, realizing efficient oil-water separation.

[0075] In summary, the emulsion oil-water separation device provided by the application has simple structure, can realize demulsification and oil-water separation of different types of emulsion (O / W type and W / O type), has high oil-water separation efficiency, is conducive to recycling of oil products in wastewater, reduces the difficulty of wastewater treatment, refines the oil product containing water, and improves the quality of the oil product.

[0076] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, any equivalent structural transformation made under the inventive concept of the application, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. An emulsion oil-water separation device comprising an emulsion inlet (1) and a tank body (2), characterized in that, The tank body (2) comprises: A filler sleeve (21) is fixed in the tank body (2) along the up-down direction, the upper end of the filler sleeve (21) is open near the emulsion inlet (1), the filler sleeve (21) is filled with first oil-water separation blocks (211) and second oil-water separation blocks (212), the first oil-water separation blocks (211) and the second oil-water separation blocks (212) are arranged alternately along the length direction of the filler sleeve (21), and the uppermost layer and the lowermost layer of the filled blocks are both the first oil-water separation blocks (211); and A drainage guide pipe (22) is connected with the lower end of the first oil-water separation block (211), and the lower end of the drainage guide pipe (22) is near the bottom of the tank body (2).

2. The emulsion oil-water separation device of claim 1, wherein, The emulsion oil-water separation device further comprises: A first discharge pipe (3) is arranged on the outer side wall of the tank body (2) near the lowermost end of the filler sleeve (21); and A second discharge pipe (4) is arranged at the bottom of the tank body (2).

3. The emulsion oil-water separation device of claim 1, wherein, When the oil phase density of the emulsion is greater than the water phase density, the first oil-water separation block (211) is oleophilic and hydrophobic material, and the second oil-water separation block (212) is hydrophilic and oleophobic material.

4. The emulsion oil-water separation device of claim 1, wherein, When the oil phase density of the emulsion is less than the water phase density, the first oil-water separation block (211) is hydrophilic and oleophobic material, and the second oil-water separation block (212) is oleophilic and hydrophobic material.

5. The emulsion oil-water separation device of claim 1, wherein, The second oil-water separation block (212) is N, and the first oil-water separation block (211) is N+1, wherein N is an integer greater than or equal to 1.

6. The emulsion oil-water separation device of claim 1, wherein The lower end of the first oil-water separation block (211) of the lowermost layer is provided with a tapered structure, and the tip angle of the tapered structure is between 90-180°.

7. The emulsion oil-water separation device of claim 6, wherein The tip angle of the tapered structure is between 120-180°.

8. The emulsion oil-water separation device of claim 1, wherein, The filler sleeve (21) is provided in plurality, and the drainage guide pipe (22) is correspondingly provided in plurality, the lower ends of the plurality of drainage guide pipes (22) converge at one place, and a drainage collection pipe (23) extends from the converging place.

9. The emulsion oil-water separation device of claim 1, wherein, The tank body (2) further comprises: An upper distributor (24) is transversely arranged in the tank body (2) to fix the upper end of the filler sleeve (21); and A lower fixer (25) is transversely arranged in the tank body (2) to fix the lower end of the filler sleeve (21).

10. A method for separating oil and water using the emulsion oil-water separation device according to any one of claims 1-9, characterized in that, The method comprises the following steps: The emulsion to be separated is introduced into the filler sleeve (21) through the emulsion inlet (1), and the oil-water separation is carried out through the first oil-water separation block (211) and the second oil-water separation block (212), then the heavy density liquid is guided to the bottom of the tank body (2) by the drainage guide pipe (22), and the low density liquid seeps out from the lower end of the filler sleeve (21), so as to realize the oil-water separation.

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