Dehydration electrode assembly

Abstract

The invention provides a dehydration electrode assembly which comprises a shell, a high-voltage electrode and a low-voltage electrode, the high-voltage electrode and the low-voltage electrode are arranged in the shell alternately, the high-voltage electrode and the low-voltage electrode are arranged in an inclined mode, and the high-voltage electrode and the low-voltage electrode are insulated from each other. And the high-voltage electrode and the low-voltage electrode are electrically connected with a power supply arranged outside the shell respectively. According to the dehydration electrode assembly, the electric field is generated between the high-voltage electrode and the low-voltage electrode, the oil-water emulsion is coalesced and dehydrated in the electric field between the electrodes, meanwhile, the high-voltage electrode and the low-voltage electrode are arranged in an inclined mode, the shallow pool effect is achieved, the migration distance of water drops can be shortened, the dehydration effect is improved, and the application range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of crude oil dehydration devices, and in particular to a dehydration electrode assembly. Background Art

[0002] Currently, the commonly used electrodes for crude oil electric dehydration are mostly horizontal hanging electrodes and vertical hanging electrodes. The electric field between the electrodes is used to dehydrate the crude oil. The electrodes themselves have no agglomeration effect on water droplets in the crude oil, and the dehydration effect is poor. Conventional dehydration electrodes are inconvenient to install and difficult to repair and replace. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a dehydration electrode assembly that combines electrical dehydration with mechanical separation based on the shallow pool principle to improve the dehydration effect.

[0004] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0005] A dehydration electrode assembly comprises a shell, a high-voltage electrode and a low-voltage electrode, wherein the high-voltage electrode and the low-voltage electrode are alternately arranged in the shell, and the high-voltage electrode and the low-voltage electrode are arranged in an inclined manner, the high-voltage electrode and the low-voltage electrode are insulated from each other, and the high-voltage electrode and the low-voltage electrode are respectively electrically connected to a power supply arranged outside the shell.

[0006] According to the dehydration electrode assembly of the present invention, an electric field is generated between the high-voltage electrode and the low-voltage electrode, and the oil-water emulsion is aggregated and dehydrated in the electric field between the electrodes. At the same time, the high-voltage electrode and the low-voltage electrode are arranged in an inclined manner, which has a shallow pool effect, can shorten the migration distance of water droplets, improve the dehydration effect, and expand the scope of application.

[0007] For the above technical solution, further improvements as described below can be made.

[0008] According to the dehydration electrode assembly of the present invention, in a preferred embodiment, the inclination angle of the high voltage electrode and the low voltage electrode is 55-65°.

[0009] Setting the inclination angle of the high-voltage electrode and the low-voltage electrode within the above range can effectively avoid the accumulation of silt on the high-voltage electrode and the low-voltage electrode, and facilitate the sliding of water droplets separated from the high-voltage electrode and the low-voltage electrode, thereby improving the agglomeration and separation effect.

[0010] Furthermore, in a preferred embodiment, the inclination angle of the high voltage electrode and the low voltage electrode is 60°.

[0011] Specifically, when the inclination angle of the high-voltage electrode and the low-voltage electrode is 60°, the effect of preventing sediment accumulation and improving the agglomeration and separation effect can be optimized.

[0012] Furthermore, in a preferred embodiment, groove structures arranged at intervals are pressed on the surfaces of the high voltage electrode and the low voltage electrode.

[0013] By pressing and processing a groove structure with a certain depth and intervals on the electrode plate, the rigidity and strength of the electrode can be effectively improved.

[0014] Furthermore, in a preferred embodiment, the width of the groove structure is 19-21 mm, and the depth of the groove structure is 1.5-2.5 mm.

[0015] The groove structure within the above-mentioned size range can not only improve the rigidity and strength, but also reduce the impact on the electric field.

[0016] Furthermore, in a preferred embodiment, a hydrophilic material layer is provided on the outer surface of the high voltage electrode and the low voltage electrode.

[0017] Specifically, the hydrophilic epoxy resin is attached to the upper surface of the electrode stainless steel plate by spraying or other processes to form a thin layer with a thickness of 5 to 10 μm. The hydrophilic properties of the hydrophilic resin are used to change the surface properties of the upper surface of the electrode to increase its hydrophilicity. When water droplets in the oil-water emulsion contact the upper surface of the electrode, they can be adsorbed and quickly adhere to the electrode. The water droplets accumulate on the surface of the electrode to form large droplets and slide downward, thereby separating from the oil phase, thereby further improving the dehydration effect.

[0018] Furthermore, in a preferred embodiment, the thickness of the hydrophilic material layer is 5-10 μm.

[0019] Setting the thickness of the hydrophilic material layer within the above range can not only well improve the hydrophilicity of the electrode surface, but also save costs as much as possible.

[0020] Furthermore, in a preferred embodiment, outer surfaces of the high voltage electrode and the low voltage electrode are provided with groove structures.

[0021] Specifically, a micrometer-scale groove structure is produced on the surface of the electrode stainless steel plate by using chemical etching and other methods to increase the adhesion of the stainless steel surface to the hydrophilic epoxy resin.

[0022] Furthermore, in a preferred embodiment, a first bracket and a second bracket are arranged on the inner side of the shell, wherein the first bracket is relatively arranged on the inner side of the shell, the second bracket is located below the first bracket and relatively arranged on the inner side of the shell, a first support assembly is arranged on the first bracket, an insulating structure is arranged between the first support assembly and the first bracket, the high-voltage electrodes are arranged on the first support assembly at intervals, a second support assembly is arranged on the second bracket, and the low-voltage electrodes are arranged on the second support assembly at intervals.

[0023] Specifically, through the above-mentioned installation structure, the structure of the dehydration electrode assembly can be ensured to a great extent to be compact, stable and reliable, the electrode can be easily installed, easily repaired and replaced, and easily managed, and the insulation performance between the high-voltage electrode and the low-voltage electrode can be ensured to a great extent, thereby ensuring the safety and reliability of the operation process.

[0024] Further, in a preferred embodiment, the first support assembly includes a first support beam arranged on the top of the insulating structure, a first mounting and fixing plate is arranged on the first support beam, a first mounting and fixing component is arranged on the first mounting and fixing plate, a first support plate is arranged on the high-voltage electrode, and the first support plate is clamped on the first mounting and supporting component, and the second support assembly includes a second support beam arranged on the second bracket, a second mounting and fixing plate is arranged on the second support beam, a second mounting and fixing component is arranged on the second mounting and fixing plate, a second support plate is arranged on the low-voltage electrode, and the second support plate is clamped on the second mounting and supporting component.

[0025] The first support assembly and the second support assembly of the above-mentioned structural form can make the arrangement structure of the high-voltage electrode and the low-voltage electrode stable and reliable, and facilitate the setting of fixed slots on the first mounting support component and the second mounting support component, so that the high-voltage electrode and the low-voltage electrode can be extremely conveniently, stably and reliably clamped on the first mounting support component and the second support component respectively, thereby making the installation and maintenance of the entire dehydration electrode assembly more convenient.

[0026] Furthermore, in a preferred embodiment, the power supply is connected to the high-voltage electrode through a high-voltage connecting line passing through the shell, an insulating sealing connector is provided at the connection between the high-voltage connecting line and the shell, and the power supply and the low-voltage electrode are respectively connected to the shell through low-voltage connecting lines.

[0027] Specifically, the high-voltage output of the power supply passes through the high-voltage connecting line, through the insulating sealing connecting piece, into the shell of the container, and is connected to the first mounting support component. The first mounting support component conducts the high-voltage electricity to each high-voltage electrode; the low-voltage electrode is connected to the second mounting support component, and the second mounting support component is connected to the shell through the low-voltage connecting line, and the shell is connected to the power supply through the low-voltage connecting line, thereby realizing the loop connection of the power supply, which is convenient to install and disassemble, and has stable and reliable operation.

[0028] Compared with the prior art, the advantages of the present invention are that the high-voltage electrode and the low-voltage electrode are arranged in an inclined manner, which has a shallow pool effect, can shorten the migration distance of water droplets, improve the dehydration effect, and expand the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0030] Figure 1The overall structure of the high voltage electrode in the embodiment of the present invention is schematically shown;

[0031] Figure 2 The local structure of the high voltage electrode in the embodiment of the present invention is schematically shown;

[0032] Figure 3 The overall structure of the low voltage electrode in the embodiment of the present invention is schematically shown;

[0033] Figure 4 The local structure of the low voltage electrode in the embodiment of the present invention is schematically shown;

[0034] Figure 5 The installation structure of the high voltage electrode and the low voltage electrode in the embodiment of the present invention is schematically shown;

[0035] Figure 6 The overall installation structure of the dehydration electrode assembly according to an embodiment of the present invention is schematically shown.

[0036] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0037] Reference numerals:

[0038] 1. Shell; 2. High voltage electrode; 3. Low voltage electrode; 4. Power supply; 5. Groove structure; 6. Insulating sealing connector;

[0039] 10. Dehydration electrode assembly; 11. First bracket; 12. Second bracket; 13. First support assembly; 14. Insulation structure; 15. Second support assembly;

[0040] 21. A first supporting plate;

[0041] 31. A second supporting plate;

[0042] 41. High voltage connecting wire; 42. Low voltage connecting wire;

[0043] 131. First support beam; 132. First mounting fixing plate; 133. First mounting support member;

[0044] 151. A second support beam; 152. A second mounting fixing plate; 153. A second mounting support component. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereby.

[0046] Figure 1 The overall structure of the high voltage electrode 2 in the embodiment of the present invention is schematically shown. Figure 2The partial structure of the high voltage electrode 2 in the embodiment of the present invention is schematically shown. Figure 3 The overall structure of the low voltage electrode 3 in the embodiment of the present invention is schematically shown. Figure 4 The partial structure of the low voltage electrode 3 in the embodiment of the present invention is schematically shown. Figure 5 The schematic diagram shows the installation structure of the high voltage electrode 2 and the low voltage electrode 3 in the embodiment of the present invention. Figure 6 The overall installation structure of the dehydration electrode assembly 10 according to the embodiment of the present invention is schematically shown.

[0047] like Figure 6 As shown, the dehydration electrode assembly 10 of an embodiment of the present invention includes a shell 1, a high-voltage electrode 2 and a low-voltage electrode 3, wherein the high-voltage electrode 2 and the low-voltage electrode 3 are alternately arranged in the shell 1, and the high-voltage electrode 2 and the low-voltage electrode 3 are arranged in an inclined manner, the high-voltage electrode 2 and the low-voltage electrode 3 are insulated from each other, and the high-voltage electrode 2 and the low-voltage electrode 3 are respectively electrically connected to a power supply 4 arranged outside the shell 1.

[0048] According to the dehydration electrode assembly of an embodiment of the present invention, an electric field is generated between the high-voltage electrode and the low-voltage electrode, and the oil-water emulsion is agglomerated and dehydrated in the electric field between the electrodes. At the same time, the high-voltage electrode and the low-voltage electrode are arranged in an inclined manner, which has a shallow pool effect, can shorten the migration distance of water droplets, improve the dehydration effect, and expand the scope of application.

[0049] According to the dehydration electrode assembly of the present invention, in this embodiment, the inclination angle of the high-voltage electrode 2 and the low-voltage electrode 3 is 55 to 65°. Setting the inclination angle of the high-voltage electrode and the low-voltage electrode within the above range can effectively prevent the accumulation of silt on the high-voltage electrode and the low-voltage electrode, and facilitate the sliding of the separated water droplets on the high-voltage electrode and the low-voltage electrode, thereby improving the agglomeration and separation effect. Further, in this embodiment, the inclination angle of the high-voltage electrode 2 and the low-voltage electrode 3 is 60°. Specifically, when the inclination angle of the high-voltage electrode and the low-voltage electrode is 60°, the effect of preventing the accumulation of silt and improving the agglomeration and separation effect can be optimized.

[0050] like Figure 2 and Figure 4As shown, further, in this embodiment, the surfaces of the high-voltage electrode 2 and the low-voltage electrode 3 are pressed with spaced groove structures 5. By pressing and processing the spaced groove structures of a certain depth on the electrode plate, the rigidity and strength of the electrode can be effectively improved. Further, in this embodiment, the width of the groove structure 5 is 19 to 21 mm, and the depth of the groove structure 5 is 1.5 to 2.5 mm. The groove structure within the above-mentioned size range can not only improve the rigidity and strength, but also reduce the impact on the electric field. Specifically, in this embodiment, the groove structure 5 is a corrugated structure. In some embodiments not shown, the structure of the groove structure 5 can be one or more of the structures of arc, trapezoid, and triangle.

[0051] Furthermore, in the present embodiment, a hydrophilic material layer is provided on the outer surface of the high-voltage electrode 2 and the low-voltage electrode 3. Specifically, in the present embodiment, the thickness of the hydrophilic material layer is 5 to 10 μm. Setting the thickness of the hydrophilic material layer within the above range can not only well improve the hydrophilicity of the electrode surface, but also save costs as much as possible. Specifically, the hydrophilic epoxy resin is attached to the upper surface of the electrode stainless steel plate by spraying or other processes, and a thin layer with a thickness of 5 to 10 μm is formed. The hydrophilic properties of the hydrophilic resin are used to change the surface properties of the upper surface of the electrode to increase its hydrophilicity. When water droplets in the oil-water emulsion contact the upper surface of the electrode, they can be adsorbed and quickly adhered to the electrode. The water droplets accumulate on the surface of the electrode into large water droplets and slide down, thereby separating from the oil phase, thereby further improving the dehydration effect.

[0052] Furthermore, in this embodiment, groove structures are provided on the outer surfaces of the high voltage electrode 2 and the low voltage electrode 3. Specifically, micrometer-scale groove structures are made on the upper surface of the electrode stainless steel plate by chemical etching and other methods to increase the adhesion of the stainless steel surface to the hydrophilic epoxy resin.

[0053] like Figure 1 , Figure 3 and, Figure 5 , Figure 6As shown, further, in this embodiment, a first bracket 11 and a second bracket 12 are arranged inside the shell 1, wherein the first bracket 11 is relatively arranged inside the shell 1, the second bracket 12 is located below the first bracket 11 and relatively arranged inside the shell 1, a first support assembly 13 is arranged on the first bracket 11, an insulating structure 14 is arranged between the first support assembly 13 and the first bracket 11, the high-voltage electrode 2 is arranged on the first support assembly 13 at intervals, a second support assembly 15 is arranged on the second bracket 12, and the low-voltage electrode 3 is arranged on the second support assembly 15 at intervals. Specifically, through the above-mentioned installation structure, it can be ensured to a great extent that the structure of the dehydration electrode assembly is compact, stable and reliable, the electrode is easy to install, easy to repair and replace, and easy to manage, and it can also ensure the insulation performance between the high-voltage electrode and the low-voltage electrode to a great extent, thereby ensuring the safety and reliability of the operation process.

[0054] like Figures 1 to 6 As shown, further, in this embodiment, the first support assembly 13 includes a first support beam 131 arranged on the top of the insulating structure 14, a first mounting and fixing plate 132 is arranged on the first support beam 131, a first mounting and fixing plate 133 is arranged on the first mounting and fixing plate 132, a first support plate 21 is arranged on the high-voltage electrode 2, and the first support plate 21 is clamped on the first mounting and supporting component 133, the second support assembly 15 includes a second support beam 151 arranged on the second bracket 12, a second mounting and fixing plate 152 is arranged on the second support beam 151, a second mounting and fixing plate 153 is arranged on the second mounting and fixing plate 152, and a second support plate 31 is arranged on the low-voltage electrode 3, and the second support plate 31 is clamped on the second mounting and supporting component 153. The first support assembly and the second support assembly of the above-mentioned structural form can make the arrangement structure of the high-voltage electrode and the low-voltage electrode stable and reliable, and facilitate the setting of fixed card slots on the first mounting support component and the second mounting support component, so that the high-voltage electrode and the low-voltage electrode can be extremely conveniently and stably and reliably connected to the first mounting support component and the second supporting component, respectively, thereby making the installation and maintenance of the entire dehydration electrode assembly more convenient. Preferably, the fixed card slots on the first mounting support component 133 and the second mounting support component 153 are set as a structure with adjustable inclination angle.

[0055] like Figure 6As shown, further, in this embodiment, the power supply 4 is connected to the high-voltage electrode 2 through the shell 1 through the high-voltage connecting wire 41, and an insulating sealing connector 6 is provided at the connection between the high-voltage connecting wire 41 and the shell 1. The power supply 4 and the low-voltage electrode 3 are respectively connected to the shell 1 through the low-voltage connecting wire 42. Specifically, the high-voltage output of the power supply 4 passes through the high-voltage connecting wire 41, passes through the insulating sealing connector 6, enters the shell 1 of the container, and is connected to the first mounting support component 133. The first mounting support component 133 conducts the high-voltage electricity to each high-voltage electrode 2; the low-voltage electrode 3 is connected to the second mounting support component 153, and the second mounting support component 153 is connected to the shell 1 through the low-voltage connecting wire 42, and the shell 1 is connected to the power supply 4 through the low-voltage connecting wire 42, so that the loop connection of the power supply 4 is realized, the installation and disassembly are convenient, and the operation is stable and reliable.

[0056] Preferably, in this embodiment, the high-voltage electrode 2, the low-voltage electrode 3, the first support plate 21, the second support plate 31, the first mounting support component 133 and the second mounting support component 153, the first mounting fixing plate 132 and the second mounting fixing plate 152 can be made of stainless steel, and other components can be made of carbon steel. The insulating structure 14 is made of materials such as polytetrafluoroethylene or ceramics, and the structure is stable and reliable, and the insulation effect is good.

[0057] Specifically, in this embodiment, the first support plate 21 is welded on the high-voltage electrode 2, and the second support plate 31 is welded on the low-voltage electrode 3. The first support plate 21 and the second support plate 31 each include at least two groups to improve the installation stability of the high-voltage electrode 2 and the low-voltage electrode 3.

[0058] According to the above embodiments, it can be seen that in the dehydration electrode assembly involved in the present invention, the high-voltage electrode and the low-voltage electrode are arranged in an inclined manner, which has a shallow pool effect, can shorten the water droplet migration distance, improve the dehydration effect, and expand the scope of application.

[0059] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dehydration electrode assembly, characterized in that: It includes a shell, a high-voltage electrode and a low-voltage electrode; wherein, The high voltage electrode and the low voltage electrode are alternately arranged in the shell, and the high voltage electrode and the low voltage electrode are arranged in an inclined manner; The high voltage electrode and the low voltage electrode are insulated from each other; The high voltage electrode and the low voltage electrode are respectively electrically connected to a power source arranged outside the shell.

2. The dehydration electrode assembly according to claim 1, characterized in that: The inclination angles of the high voltage electrode and the low voltage electrode are 55-65°.

3. The dehydration electrode assembly according to claim 2, characterized in that: The inclination angle of the high voltage electrode and the low voltage electrode is 60°.

4. The dehydration electrode assembly according to any one of claims 1 to 3, characterized in that: The surfaces of the high voltage electrode and the low voltage electrode are pressed with groove structures arranged at intervals.

5. The dehydration electrode assembly according to claim 4, characterized in that: The width of the groove structure is 19-21 mm, and the depth of the groove structure is 1.5-2.5 mm.

6. The dehydration electrode assembly according to any one of claims 1 to 3, characterized in that: A hydrophilic material layer is arranged on the outer surfaces of the high voltage electrode and the low voltage electrode.

7. The dehydration electrode assembly according to claim 6, characterized in that: The thickness of the hydrophilic material layer is 5-10 μm.

8. The dehydration electrode assembly according to claim 6, characterized in that: The outer surfaces of the high voltage electrode and the low voltage electrode are provided with groove structures.

9. The dehydration electrode assembly according to any one of claims 1 to 3, characterized in that: The first bracket and the second bracket are arranged inside the shell; wherein, The first bracket is relatively arranged on the inner side of the shell, and the second bracket is located below the first bracket and relatively arranged on the inner side of the shell; A first support assembly is disposed on the first support, an insulating structure is disposed between the first support assembly and the first support, and the high-voltage electrodes are disposed on the first support assembly at intervals; A second support assembly is disposed on the second bracket, and the low-voltage electrodes are disposed on the second support assembly at intervals.

10. The dehydration electrode assembly according to claim 9, characterized in that: The first support assembly includes a first support beam arranged on the top of the insulating structure, a first mounting plate is arranged on the first support beam, a first mounting support component is arranged on the first mounting plate, a first support plate is arranged on the high voltage electrode, and the first support plate is clamped on the first mounting support component; The second support assembly includes a second support beam arranged on the second bracket, a second mounting plate is arranged on the second support beam, a second mounting support component is arranged on the second mounting support plate, a second support plate is arranged on the low-voltage electrode, and the second support plate is clamped on the second mounting support component.

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