Electrostatic adsorption separation equipment

Abstract

The invention belongs to the technical field of catalytic cracking slurry oil removal solid catalyst, and discloses electrostatic adsorption separation equipment, which comprises a separator body, a raw material inlet, a purified raw material outlet, a high-voltage electricity inlet, a backwashing solvent outlet, a plurality of groups of backwashing solvent inlets and a hand hole, a transformer is also arranged at the top of the separator body close to the high-voltage lead-in port, and extends into the high-voltage lead-in port through a high-voltage flexible connector to be connected with the electrode; the electrode is hung on the electrode beam; a plurality of groups of filler supporting plates and backwashing devices are arranged in an array manner in the direction perpendicular to the length direction of the separator body; the backwashing device is connected with the backwashing solvent inlet; the electrode extends from the topmost filler support plate to the bottommost filler support plate. According to different heights and cleaning requirements of the electrostatic separator, the arrangement of the filler bed layers in the electrostatic separator is realized by adopting a mode of multiple layers of filler supporting plates and multiple layers of backwashing pipes, fluidization cleaning is realized, and the cleaning efficiency and effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of removing solid catalyst from catalytic cracking oil slurry, and in particular to an electrostatic adsorption separation device. Background Art

[0002] With the rapid consumption of oil resources around the world, the storage capacity of light oil is decreasing, and the proportion of heavy oil is gradually increasing. Catalytic cracking (FCC) technology plays an important role in the process of lightening heavy oil. In addition to producing light oil, catalytic cracking units also produce products such as slurry oil. According to incomplete statistics, the slurry oil produced by my country's catalytic cracking slurry oil unit is not less than 7.5 million tons per year. At present, the methods for refineries to treat catalytic cracking slurry oil are mainly recycling and external disposal: the recycling process is prone to coking and scaling of the unit, resulting in a decrease in the unit's processing capacity; the externally disposed slurry oil is mostly directly burned as fuel, with a very low resource utilization rate, resulting in a large waste of resources. Therefore, increasing the added value of catalytic cracking slurry oil and maximizing its value have very important economic and social benefits.

[0003] Catalytic cracking slurry (FCCS) contains a large amount of polycyclic aromatic hydrocarbons, which can be used to produce high value-added products such as needle coke, carbon black, and carbon-based materials, and can also be used as high-quality raw materials such as asphalt modifiers, strengtheners, and heat transfer oils, with extremely high comprehensive utilization value. However, the presence of catalyst particles in the slurry restricts the high-value utilization of the slurry, and the removal of catalyst particles has become the key to achieving high-value utilization of the slurry. At present, the commonly used methods for FCCS solid removal include sedimentation separation, filtration separation, cyclone separation, centrifugal separation, and electrostatic separation. Among them, the electrostatic separation method has the advantages of good separation performance, large processing capacity, and small pressure drop, and has great advantages in separating small-size particles or low solid concentration conditions.

[0004] At present, the main design concept of the electrostatic oil slurry desolidification setting comes from two US patents: US3799857 "ELECTROFILTER SYSTEM" and US5308586 "ELECTROSTATIC SEPARATOR USIN GA BEAD BED". Some domestic enterprises have further developed it. Chinese invention patent: Announcement number "CN111303938B", named "A method for effectively desolidifying catalytic oil slurry to produce needle coke raw oil", discloses a method for efficiently desolidifying catalytic oil slurry to produce needle coke raw oil, which solves the problem of difficult filtration of catalytic oil slurry in China that cannot be broken through by traditional electrostatic separation and mechanical filtration methods through efficient liquid-solid separation treatment methods, realizes the process of refining difficult-to-handle, low economic added value catalytic oil slurry into low solid content, high added value and high-quality catalytic oil slurry, and realizes long-term stable, continuous and efficient production and treatment. This technical solution provides a new method and technology for high value-added applications of oil slurry, realizes efficient filtration and refining of catalytic oil slurry, and at the same time realizes full utilization of backwash oil and optimized use of peripheral system supporting facilities, breaking through the bottleneck of the electric filtration method in which the separator is not easy to clean online in the traditional electrostatic separation technology. Chinese invention patent: Publication number "CN115851310A", named "A process and equipment for desolidification of oil slurry integrating chemical sedimentation and electrostatic separation", discloses a process and equipment for desolidification of oil slurry integrating chemical sedimentation and electrostatic separation, belongs to the field of catalytic cracking oil slurry solid removal, a desolidification equipment for oil slurry integrating chemical sedimentation and electrostatic separation, including a static mixer, a first-stage sedimentation separation component, a two-stage electrostatic separation component and a filter connected in sequence, the first-stage sedimentation separation includes a sedimentator, the two-stage electrostatic separation includes an electrostatic separator A, an electrostatic separation B and electrostatic separator C, wherein electrostatic separator A, electrostatic separator B and electrostatic separator C are connected in series; the electrostatic separator is provided with a vertically suspended mesh electrode plate and a spherical seasoning inside to realize the liquid-solid separation of the oil slurry under the condition of a high-voltage electrostatic field; it can be realized by adopting a process combining a primary auxiliary agent precipitation and a secondary electrostatic separation, and the impurities with large particle size are initially settled and removed before electrostatic separation, and the impurities with small particle size are deeply removed by electrostatic separation, which improves the efficiency of oil slurry solid removal, improves the solid impurity removal rate, reduces the power load of electrostatic separation, and reduces the cleaning frequency. The above-mentioned electrostatic separators all face a backwashing problem, that is, the glass bead packing bed layer adsorbed with catalyst particles needs to be washed so that it has the ability to adsorb again. In order to achieve a better cleaning effect, the diameter and height of a single electrostatic separator should not be too large. The large diameter of the electrostatic separator will cause two problems: first, the cleaning of the packing bed is inconvenient, and second, the electric field strength is limited, because traditional electrostatic separators are all divided into uniform electric fields. The larger the diameter of the separator, the lower the electric field strength at the center of the principle separator, and the worse the electrostatic separation effect.However, the smaller diameter and height of the separator greatly limit the oil slurry processing capacity of a single separator. Therefore, the above-mentioned prior art often uses multiple electrostatic separators in parallel to increase the oil slurry processing capacity, which makes the entire oil slurry desolidification system complicated and large. However, the larger diameter of the electrostatic separator and the thicker glass column bed make it difficult to achieve the ideal effect of the backwashing process. Developing and designing large-scale electrostatic separators, increasing the processing capacity of unit equipment, solving the problem of cleaning the bed packing, and improving the electrostatic separation efficiency have become a difficulty that limits the use of electrostatic methods for catalytic cracking oil slurry desolidification technology. Summary of the invention

[0005] In order to solve the problem that the increase in the oil slurry processing volume achieved by connecting multiple electrostatic separators in parallel in the above-mentioned prior art will make the entire oil slurry desolidification system complicated and large, and at the same time, the larger diameter of the electrostatic separator and the thicker glass column bed make it difficult to achieve the ideal effect of the backwashing process. The present invention proposes an electrostatic adsorption separation device, which aims to achieve the stability of the electrostatic field strength in the entire separator under the conditions of large-scale electrostatic separators with more diameters and greater heights, and to achieve high efficiency in cleaning the packed bed. Through this technology, a single electrostatic separator device can process more oil slurry, reduce the number of equipment and system complexity, and make the cleaning of the packed bed more convenient and more effective.

[0006] The present invention is realized through the following technical scheme: comprising a separator body, a raw material inlet and a purified raw material outlet respectively arranged at the top and bottom of the separator body, and a high-voltage electricity inlet and a backwashing solvent outlet respectively arranged at both sides of the top of the separator body, and also comprising a plurality of groups of backwashing solvent inlets and hand holes; the separator body is long and strip-shaped and vertically arranged; a transformer is also arranged at the top of the separator body near the high-voltage electricity inlet, and the transformer is extended into the high-voltage electricity inlet through a high-voltage electricity soft connection and connected to the electrode inside the separator body; the electrode is suspended on the electrode beam and connected to the electrode beam through an insulating material; a plurality of groups of filler support plates and backwashing devices are arranged in an array perpendicular to the length direction of the separator body, and the filler is laid on the filler support plate to form a filler bed layer; the backwashing device is connected to the backwashing solvent inlet; the electrode extends from the top filler support plate to the bottom filler support plate.

[0007] As a further preference, a packing cover plate is arranged above the packing support plate near the top of the inner part of the separator body, and a gap is left between the packing cover plate and the packing support plate.

[0008] As a further preference, the filler support plate is a porous plate, and the diameter of the holes on the porous plate is smaller than the diameter of the filler.

[0009] As a further preference, the filler is made of a material having electrostatic adsorption effect.

[0010] As further preferred, the filler is glass beads.

[0011] As a further preference, the electrode is a rod-type electrode, which is a regular or irregular cylindrical shape and is made of a metal material.

[0012] As a further preference, the electrode is an annular electrode, which is a metal cylinder with openings at upper and lower ends and a center axis of the separator body as the axis.

[0013] As a further preference, the electrode is a plate electrode, and the plate electrode is one or more metal grid plates.

[0014] As a further preference, the backwashing device is an H-type backwashing device, which is composed of four straight pipelines, namely pipeline one, pipeline two, pipeline three and pipeline four; one end of pipeline one is connected to the backwashing solvent inlet, and the other end is connected to the center of pipeline two, and pipeline one and pipeline two are perpendicular to each other; the two ends of pipeline two are respectively connected to pipeline three and pipeline four, and pipeline three and pipeline four are respectively arranged parallel to pipeline one; pipeline three and pipeline four are both provided with a plurality of nozzles.

[0015] As a further preference, the backwashing device is an annular backwashing device, which is composed of three pipelines, namely pipeline five, pipeline six and pipeline seven. The pipeline five and pipeline six are straight pipelines, and pipeline seven is an annular pipeline; one end of the pipeline five is connected to the backwashing solvent inlet, and the other end is connected to the center of pipeline six and is perpendicular to pipeline six; both ends of the pipeline six are connected to pipeline seven, and a plurality of nozzles are arranged on the pipeline seven.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts a single electrode, multiple electrodes, annular electrodes, plate electrodes and the like to power the electrostatic separator. According to different diameters and separation requirements of the electrostatic separator, several electrodes or several layers of annular electrodes or several plate electrodes are arranged to make the high-voltage electrostatic field inside the electrostatic separator as uniform and stable as possible, and does not decay too quickly as the size of the electrostatic separator increases.

[0018] 2. The present invention adopts a multi-layer packing support plate and a multi-layer backwashing pipe to realize the arrangement of the packing bed in the electrostatic separator. According to different electrostatic separator heights and cleaning requirements, several layers of packing support plates and backwashing pipes are arranged so that each layer of the packing bed can achieve fluidized cleaning as much as possible while meeting the separation requirements, thereby improving the cleaning efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall internal structure of the present invention.

[0021] Figure 3 It is a schematic diagram of a rod-type electrode in the electrode type of the present invention.

[0022] Figure 4 It is a schematic diagram of a ring electrode in the electrode type of the present invention.

[0023] Figure 5 It is a schematic diagram of a plate electrode in the electrode type of the present invention.

[0024] Figure 6 It is a schematic diagram of the H-type backwashing device of the present invention.

[0025] Figure 7 It is a schematic diagram of the annular backwashing device of the present invention.

[0026] Indicated in the figure:

[0027] 1. Separator body; 2. Raw material inlet; 3. Purified raw material outlet; 4. High-voltage electricity inlet; 5. Backwash solvent inlet one; 6. Backwash solvent inlet two; 7. Backwash solvent inlet three; 8. Backwash solvent outlet; 9. Hand hole one; 10. Hand hole two; 11. Hand hole three; 12. Transformer; 13. High-voltage electricity flexible connection; 14. Electrode beam; 15. Electrode; 16. Packing support plate one; 17. Packing bed one; 18. Backwash device one; 19. Packing support plate two; 20. Packing bed two; 21. Backwash device two; 22. Packing support plate three; 23. Packing bed three; 24. Backwash device three; 25. Packing cover plate; 26. Rod electrode; 27. Ring electrode; 28. Plate electrode; 29. ​​H-type backwash; 30. Nozzle; 31. Ring backwash. DETAILED DESCRIPTION

[0028] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 and Figure 2As shown, it is embodiment 1 of the present invention. The present invention provides an electrostatic adsorption separation device, including a separator body 1, a raw material inlet 2, a purified raw material outlet 3 and a high-voltage electricity introduction port 4. The raw material inlet 2 is used for the catalytic cracking oil slurry raw material to enter the electrostatic adsorption separation device, the purified raw material outlet 3 is used for the catalytic cracking oil slurry after the solid catalyst is removed to leave the electrostatic adsorption separation device, and the high-voltage electricity introduction port 4 is used to introduce the high voltage electricity generated by the transformer 12 into the electrode plate in the electrostatic adsorption separation device. The separation device also includes a backwash solvent outlet 8 and at least one backwash solvent inlet and at least one hand hole. The number of the backwash solvent inlets is determined according to the height of the electrostatic adsorption separation device. This example takes three backwash solvent inlets as an example, namely, backwash solvent inlet one 5, backwash solvent inlet two 6 and backwash solvent inlet three 7. The number of the hand holes is determined according to the number of backwash solvent inlets, which is consistent with the number of backwash solvent inlets. The hand holes are used for loading and unloading of packing beds at different positions. This embodiment takes three hand holes as an example, namely, hand hole one 9, hand hole two 10 and hand hole three 11. The backwash solvent outlet 8 is used for the backwash solvent after cleaning to leave the electrostatic adsorption separation device. The separator body 1 is in the shape of an elongated strip and is arranged vertically. The raw material inlet 2 is arranged at the top of the separator body 1, and the purified raw material outlet 3 is arranged at the bottom of the separator body 1. The high-voltage electricity inlet 4 and the backwash solvent outlet 8 are respectively arranged on both sides of the top of the separator body 1. Several backwash solvent inlets are arranged on one side of the separator body 1, and several hand holes are arranged on the side adjacent to the backwash solvent inlet. In this embodiment, a backwash solvent inlet 1 5, a backwash solvent inlet 2 6 and a backwash solvent inlet 3 7 are arranged in sequence from the bottom to the top of the separator body 1, and similarly, a hand hole 1 9, a hand hole 2 10 and a hand hole 3 11 are arranged in sequence from the bottom to the top of the separator body 1.

[0031] The electrostatic adsorption separation device described in the present invention also includes a transformer 12, which is installed at the top of the separator body 1 near the high-voltage electricity inlet 4. The transformer 12 is used to boost industrial electricity to high voltage electricity (25kV and above) for providing power to the electrostatic separator. It can be an AC transformer, a DC transformer, a pulse transformer or other new transformers. The transformer 12 is connected to a high-voltage electricity introduction device, which is arranged in the separator body 1. The high-voltage electricity introduction device is used to introduce the high-voltage electricity generated by the transformer 12 into the separator body 1, including a high-voltage electricity soft connection 13 and an electrode beam 14. The transformer 12 is connected to the high-voltage electricity soft connection 13, and the high-voltage electricity soft connection 13 extends into the high-voltage electricity introduction port 4, thereby entering the separator body 1. An electrode beam 14 is arranged near the top of the separator body 1, and the electrode beam 14 is used to suspend the electrode 15 inside the separator body 1. The electrode beam 14 is connected to the electrode 15 by an insulating material. The high-voltage electric flexible connection 13 extending into the separator body 1 is connected to the electrode 15, and the high-voltage electricity generated by the transformer 12 is connected to the electrode 15 through the high-voltage electric flexible connection 13. Under the action of the high-voltage electricity, the electrode 15 generates a high-voltage electric field in the separator body 1. The electrode 15 can be a single-rod electrode, a multi-rod electrode, a single-layer annular electrode, a multi-layer annular electrode, a plate electrode, etc., and the specific form of the appropriate electrode 15 is selected according to the actual diameter of the separator body and the requirements of the electric field strength required for liquid-solid separation. Various electrodes 15 constitute the high-voltage electrode system of the present invention, which is used to generate a high-voltage electrostatic field in the separator body 1 when power is turned on.

[0032] A packing support plate is also arranged in the separator body 1 for supporting the packing for electrostatic separation. According to the actual height of the separator body 1, multiple layers of packing support plates can be arranged in the separator body 1. The packing support plates are arranged in an array perpendicular to the length direction of the separator body 1. The electrode 15 extends from the top packing support plate to the bottom packing support plate. In this embodiment, three layers of packing support plates are arranged, namely, a packing support plate 1 16, a packing support plate 2 19 and a packing support plate 3 22, which are arranged in sequence from the bottom to the top of the separator body 1. The electrode 15 extends from the packing support plate 3 22 to the packing support plate 1 16. The packing support plate is a porous plate with a hole diameter smaller than the packing diameter, which is used to support the packing. The packing is loaded through the hand hole, and the loaded packing forms a packing bed layer under the support of the packing support plate, such as the packing in this embodiment forms a packing bed layer 17 on the packing support plate 1 16, a packing bed layer 20 on the packing support plate 2 19, and a packing bed layer 3 23 on the packing support plate 3 22. A backwashing device is arranged above each layer of packing support plate, and the backwashing device is connected to the backwashing solvent inlet, and is used for the backwashing solvent to enter the separator body 1 to backwash the packing of the packing bed layer. The backwashing device is used to backwash the packing bed layer, and includes a cleaning liquid distributor and a nozzle 30. A backwashing device is arranged above each layer of packing support plate. As in the present embodiment, there are three backwashing devices, namely, a backwashing device 18 connected to the backwashing solvent inlet 1 5, a backwashing device 21 connected to the backwashing solvent inlet 2 6, and a backwashing device 3 24 connected to the backwashing solvent inlet 3 7. A packing cover plate 25 is arranged above the topmost packing bed layer. As in the present embodiment, the packing cover plate 25 is arranged above the packing bed layer 3 23. The packing cover plate 25 is used to prevent the packing of the topmost layer from being carried out of the separator by the backwashing solvent during backwashing. The packing support plate of the upper layer can be used as the packing cover plate 25 of the next packing bed layer. As in this embodiment, the packing support plate three 22 can be used as the packing cover plate 25 of the packing bed layer two 20 , and the packing support plate two 19 can be used as the packing cover plate 25 of the packing bed layer one 17 .

[0033] A certain space is reserved between the packing cover plate 25 and the packing bed layer for backwashing. The high-pressure backwashing fluidizes the packing bed layer, that is, the packing bed layer is compact during normal liquid-solid separation, and the raw material liquid moves from top to bottom. During backwashing, the packing bed layer should be loose, and the backwashing solvent moves from bottom to top, driving the packing of the packing bed layer to flow in the space between the packing cover plate 25 and the packing support plate, thereby enhancing the cleaning effect.

[0034] The filler is preferably glass beads, or other spherical or non-spherical fillers that can produce electrostatic adsorption. The backwash solvent can be diesel, kerosene, toluene or other solvents, and can also include additives such as phosphoric acid and nitric acid.

[0035] Example 2

[0036] like Figures 3 to 5 Schematic diagrams of several types of electrodes 15 in the present invention are shown.

[0037] The same parts of this embodiment as those of embodiment 1 are not described in detail. The difference between this embodiment and embodiment 1 is that: Figure 3 As shown, the electrode 15 in the separator body 1 can be a rod-type electrode 26, which has a regular or irregular cylindrical structure and is made of metal material. The number of rod-type electrodes 26 can be adjusted according to the diameter of the electrostatic adsorption separator body 1, the voltage of the high voltage output by the transformer 12, and the strength of the high voltage electrostatic field required for liquid-solid separation. There can be one or more rod-type electrodes 26, and the multiple rod-type electrodes 26 can be arranged in a straight line or in a star shape.

[0038] like Figure 4 As shown, the electrode 15 of the separator body 1 can be an annular electrode 27. The structure of the annular electrode 27 is a cylinder with openings at both ends, with the center axis of the separator body 1 as the axis. The cylinder can be made of metal plates or frame-type grid plates made of metal. The number of annular electrodes 27 and the spacing between different annular electrodes 27 can be adjusted according to the diameter of the electrostatic adsorption separator body 1, the voltage of the high voltage output by the transformer 12, and the strength of the high voltage electrostatic field required for liquid-solid separation.

[0039] like Figure 5 As shown, the electrode 15 of the separator body 1 can be a plate electrode 28, and the structure of the plate electrode 28 is one or more grid plates made of metal. The number of plate electrodes 28 and the spacing between different plate electrodes 28 can be adjusted according to the diameter of the electrostatic adsorption separator body 1, the voltage of the high voltage output of the transformer 12, and the field strength of the high voltage electrostatic field required for liquid-solid separation.

[0040] Regardless of the type of electrode 15, it is connected to the high-voltage electric soft connection 13 for introducing the high voltage electricity generated by the transformer 12. It is connected to the electrode beam 14 through an insulating component for the electrode 15 to be stably suspended in the separator body 1. It passes through the packing support plate, the packing bed, the packing cover plate, and the backwashing device. When it intersects with the packing support plate, the packing cover plate, and the backwashing device, safe insulation measures are adopted, such as wrapping the electrode 15 with a protective cover made of PTFE (polytetrafluoroethylene) material to prevent the electrode 15 from direct contact with metal parts in the separator body 1 except the high-voltage electric soft connection 13.

[0041] Example 3

[0042] like Figure 6 and Figure 7As shown, it is a schematic diagram of several backwashing devices of the present invention. The same parts of this embodiment as those of embodiment 1 and embodiment 2 are not repeated here. The difference between this embodiment and embodiment 1 and embodiment 2 is that the structure of the backwashing device can be H-shaped or annular. Figure 6 As shown, the H-type backwash 29 of this embodiment is arranged in the separator body 1, above the packing support plate. The H-type backwash 29 is composed of four straight pipelines, namely pipeline one, pipeline two, pipeline three and pipeline four. One end of pipeline one is connected to the backwash solvent inlet, and the other end is connected to the center of pipeline two, and pipeline one and pipeline two are perpendicular to each other. The two ends of pipeline two are respectively connected to pipeline three and pipeline four, and pipeline three and pipeline four are respectively arranged parallel to pipeline one. Pipeline three and pipeline four are both provided with a plurality of nozzles 30 for spraying the solvent into the packing bed at high pressure.

[0043] like Figure 7 As shown, the annular backwash 31 of this embodiment is composed of three pipelines, namely pipeline 5, pipeline 6 and pipeline 7. The pipelines 5 and 6 are straight pipelines, and pipeline 7 is an annular pipeline. One end of the pipeline 5 is connected to the backwash solvent inlet, and the other end is connected to the center of pipeline 6 and is perpendicular to pipeline 6. Both ends of the pipeline 6 are connected to pipeline 7, that is, pipeline 6 is connected to pipeline 7 with the diameter of pipeline 7 as pipeline 7, or pipeline 6 is at the position of the diameter of pipeline 7. A plurality of nozzles 30 are arranged on the pipeline 7.

[0044] Regardless of the H-type backwashing 29 or the annular backwashing 31 , a certain number of small holes can be directly opened in the backwashing device for spraying the backwashing solvent, and a certain number of nozzles 30 can also be installed.

[0045] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. An electrostatic adsorption separation device, comprising a separator body (1), a raw material inlet (2) and a purified raw material outlet (3) respectively arranged at the top and bottom of the separator body (1), and a high-voltage power inlet (4) and a backwash solvent outlet (8) respectively arranged at both sides of the top of the separator body (1), characterized in that: The separator body (1) is long and arranged vertically. A transformer (12) is arranged near the high-voltage power inlet (4) at the top of the separator body (1). The transformer (12) extends into the high-voltage power inlet (4) through a high-voltage power flexible connection (13) and is connected to an electrode (15) inside the separator body (1). The electrode (15) is suspended on an electrode beam (14) and connected to the electrode beam (14) through an insulating material. A plurality of groups of filler support plates and backwashing devices are arranged in an array perpendicular to the length direction of the separator body (1). The filler is laid on the filler support plates to form a filler bed. The backwashing device is connected to the backwashing solvent inlet. The electrode (15) extends from the top filler support plate to the bottom filler support plate.

2. The electrostatic adsorption separation device according to claim 1, characterized in that: A packing cover plate (25) is arranged above the packing support plate near the top of the separator body (1), and a gap is left between the packing cover plate (25) and the packing support plate.

3. The electrostatic adsorption separation device according to claim 2, characterized in that: The filler support plate is a porous plate, and the diameter of the holes on the porous plate is smaller than the diameter of the filler.

4. The electrostatic adsorption separation device according to claim 2, characterized in that: The filler is made of a material with electrostatic adsorption effect.

5. The electrostatic adsorption separation device according to claim 3, characterized in that: The filler is glass beads.

6. The electrostatic adsorption separation device according to claim 2, characterized in that: The electrode (15) is a rod-type electrode (26), which is in a regular or irregular cylindrical shape and is made of a metal material.

7. The electrostatic adsorption separation device according to claim 2, characterized in that: The electrode (15) is an annular electrode (27), and the annular electrode (27) is a metal cylinder with openings at both ends, with the center axis of the separator body (1) as the axis.

8. The electrostatic adsorption separation device according to claim 2, characterized in that: The electrode (15) is a plate-type electrode (28), and the plate-type electrode (28) is one or more metal grid plates.

9. The electrostatic adsorption separation device according to claim 2, characterized in that: The backwashing device is an H-type backwashing device (29), which is composed of four straight pipelines, namely pipeline one, pipeline two, pipeline three and pipeline four; one end of pipeline one is connected to the backwashing solvent inlet, and the other end is connected to the center of pipeline two, and pipeline one and pipeline two are perpendicular to each other; the two ends of pipeline two are respectively connected to pipeline three and pipeline four, and pipeline three and pipeline four are respectively arranged in parallel with pipeline one; pipeline three and pipeline four are both provided with a plurality of nozzles (30).

10. The electrostatic adsorption separation device according to claim 2, characterized in that: The backwashing device is an annular backwashing device (31), and the annular backwashing device (31) is composed of three pipelines, namely pipeline five, pipeline six and pipeline seven. The pipeline five and pipeline six are straight pipelines, and pipeline seven is an annular pipeline; one end of the pipeline five is connected to the backwashing solvent inlet, and the other end is connected to the center of pipeline six and is perpendicular to pipeline six; both ends of the pipeline six are connected to pipeline seven, and a plurality of nozzles (30) are arranged on the pipeline seven.

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