Electrostatic field dust removal device

Abstract

An embodiment of the present invention provides an electrostatic field dust removal device, which belongs to the technical field of electrostatic dust removal. The electrostatic field dust removal device includes: at least one negative electrode plate for releasing negative charges; at least one positive electrode plate, which is arranged alternately in parallel with at least one negative electrode plate, for receiving the negative charges released by at least one negative electrode plate; an electrostatic dust removal area and a glow plasma area are formed between each negative electrode plate of at least one negative electrode plate and each positive electrode plate of at least one positive electrode plate; the exhaust gas flows between each negative electrode plate and each positive electrode plate and is alternately purified, wherein the exhaust gas is corona purified in the electrostatic dust removal area and ionized in the glow plasma area. The electrostatic dust removal device of the present invention simultaneously realizes the corona dust removal purification and plasma ionization antibacterial and deodorization of the exhaust gas through two negative charge release modes.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic precipitators, and in particular relates to an electrostatic field precipitator. Background Art

[0002] In industrial production processes, such as power plants, chemical plants, metallurgical and mining operations, fuel combustion or chemical reactions are often involved. Therefore, a large amount of smoke and dust is generated in these industrial production processes. These smoke and dust contain a large number of components that are harmful to the environment. For example, the industrial setting machines commonly used in the printing and dyeing industry mainly emit a large amount of smoke, dust and lint, mixed with a large amount of oil mist, polyphenyl organic matter, printing and dyeing auxiliaries, etc. If the exhaust gas is not purified, it will accumulate in the pipeline for a long time and further undergo physical and chemical changes, produce odor and pollute the environment, and even spontaneously combust, causing fires, posing serious safety hazards.

[0003] In addition to using various filter devices for physical isolation, the common dust removal method is currently also widely used. For example, tubular electrostatic precipitators, plate-type electrostatic precipitators, annular electric field precipitators, etc. However, the above-mentioned electrostatic precipitators are often affected by the composition of the exhaust gas, specific resistance, flow parameters, etc., resulting in low dust removal efficiency and substandard purification. At the same time, the power consumption and equipment costs are generally high.

[0004] In view of the fact that the dust removal effect, power consumption and safety of the existing electrostatic precipitators need to be optimized, it is hoped to provide a new type of electrostatic field dust removal device to fully or partially solve the above problems. Summary of the invention

[0005] In order to solve at least one aspect of the above problems and defects in the prior art, an embodiment of the present invention provides an electrostatic field dust removal device, which simultaneously realizes the corona dust removal and purification of waste gas and the antibacterial and deodorization of plasma ionization through two negative charge release modes. The technical solution is as follows:

[0006] According to one aspect of the present invention, an electrostatic field dust removal device is provided, the electrostatic field dust removal device comprising:

[0007] at least one negative electrode plate for releasing negative charges;

[0008] At least one positive electrode plate is arranged alternately and in parallel with at least one negative electrode plate, and is used to receive negative charges released by at least one negative electrode plate;

[0009] wherein an electrostatic dust removal region and a glow plasma region are formed between each negative electrode plate of at least one negative electrode plate and each positive electrode plate of at least one positive electrode plate;

[0010] The exhaust gas flows between each negative electrode plate and each positive electrode plate and is alternatively purified, wherein it is corona purified in the electrostatic precipitator area and ionized in the glow plasma area.

[0011] In some embodiments, at least two first spike structures are disposed on each negative electrode plate, and each negative electrode plate releases negative charge through the tips of the at least two first spike structures; the at least two first spike structures are alternately disposed on the plate surfaces on both sides of each negative electrode plate.

[0012] Furthermore, each positive electrode plate is provided with at least two second spike structures corresponding to the arrangement of the at least two first spike structures on each negative electrode plate.

[0013] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate facing it to form an electrostatic dust removal area.

[0014] Furthermore, the plane on the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the opposite positive electrode plate to form a glow plasma region.

[0015] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures includes at least two discharge tips, wherein the at least two discharge tips include four discharge tips arranged centrally and symmetrically, or three discharge tips arranged in a triangle.

[0016] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or by separately processing each first spike structure and then welding each first spike structure to each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or by separately processing each second spike structure and then welding each second spike structure to each positive electrode plate.

[0017] In some embodiments, when punching each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, a first spike structure and a second spike structure are punched out on one side of the plate surface, or two first spike structures and two second spike structures stacked together are punched out in the same direction on both side plate surfaces at the same time.

[0018] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first spike structure and each second spike structure are set at the center of a convex position or a concave position of the wavy plate surface.

[0019] In some embodiments, at least one liquid guide channel is disposed on the plate surface of each negative electrode plate and each positive electrode plate.

[0020] In some embodiments, the electrostatic precipitator further comprises at least one group of nozzles, and the at least one group of nozzles is arranged on the wall surface of the shell near the insulator of the electrostatic precipitator for cleaning the insulator.

[0021] In some embodiments, the electrostatic field dust removal device also includes at least one shell, and a group of negative electrode plates and positive electrode plates are integrated and installed in each shell of the at least one shell to form an electrostatic field dust removal unit; the integrated electrostatic field dust removal unit is fixed by connecting each adjacent shell.

[0022] The present invention also provides a plurality of embodiments according to the following aspects, which are specifically as follows:

[0023] Aspect 1: A method for manufacturing an electrostatic field dust removal device, the manufacturing method comprising:

[0024] manufacturing at least one negative electrode plate for releasing negative charges;

[0025] Manufacturing at least one positive electrode plate, arranged alternately and in parallel with at least one negative electrode plate, for receiving negative charges released by at least one negative electrode plate;

[0026] An electrostatic dust removal region and a glow plasma region are formed between each negative electrode plate of at least one negative electrode plate and each positive electrode plate of at least one positive electrode plate, and the exhaust gas flows between each negative electrode plate and each positive electrode plate and is purified alternately, wherein the exhaust gas is corona purified in the electrostatic dust removal region and ionized in the glow plasma region.

[0027] Aspect 2: A manufacturing method according to Aspect 1, wherein at least two first spike structures are installed on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of at least two first spike structures; and at least two first spike structures are alternately installed on the plate surface on both sides of each negative electrode plate.

[0028] Aspect 3: According to the manufacturing method described in Aspect 2, at least two second spike structures are installed on each positive electrode plate in accordance with the arrangement of at least two first spike structures on each negative electrode plate.

[0029] Aspect 4: A manufacturing method according to Aspect 3, wherein each of the at least two first spike structures and each of the at least two second spike structures includes at least two discharge tips, wherein the at least two discharge tips include four discharge tips arranged symmetrically with respect to the center, or three discharge tips arranged in a triangle.

[0030] Aspect 5: A manufacturing method according to Aspect 4, wherein each first spike structure is formed by stamping each negative electrode plate, or by separately processing each first spike structure and then welding each first spike structure to each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or by separately processing each second spike structure and then welding each second spike structure to each positive electrode plate.

[0031] Aspect 6: According to the manufacturing method according to claim 5, when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, a first spike structure and a second spike structure are stamped on one side of the plate surface, or two first spike structures and two second spike structures stacked together are stamped in the same direction on both side plate surfaces at the same time.

[0032] Aspect 7: A manufacturing method according to any one of Aspects 1-6, wherein the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first spike structure and each second spike structure are set at the center of a raised position or a recessed position of the wavy plate surface.

[0033] Aspect 8: According to the manufacturing method described in Aspect 7, at least one liquid guide channel is provided on the plate surface of each negative electrode plate and each positive electrode plate.

[0034] Aspect 9: According to the manufacturing method described in Aspect 8, the electrostatic precipitator further includes at least one group of nozzles, which are arranged on the wall surface of the shell near the insulator of the electrostatic precipitator for cleaning the insulator.

[0035] Aspect 10: A manufacturing method according to Aspect 9, wherein the electrostatic field dust removal device further comprises at least one shell, and a group of negative electrode plates and positive electrode plates are integrated and installed in each shell of the at least one shell to form an electrostatic field dust removal unit; and the electrostatic field dust removal unit is integrated by connecting and fixing each adjacent shell.

[0036] Aspect 11: A purification method using an electrostatic field dust removal device manufactured according to any one of aspects 1 to 10, the purification method comprising:

[0037] The exhaust gas to be purified passes through an electrostatic precipitator area and is corona purified in the electrostatic precipitator area, wherein the electrostatic precipitator area is formed by the tips of at least two first spike structures on each negative electrode plate releasing negative charges to the plate surface of the positive electrode plate facing the tip;

[0038] The waste gas to be purified enters the glow plasma area after passing through the electrostatic dust removal area. The glow plasma area is formed by releasing negative charges from the plane of the opposite side of the plate surface where at least two first spike structures on each negative electrode plate are located to the tips of at least two second spike structures on the positive electrode plate facing it. The waste gas is ionized in the glow plasma area to achieve deodorization and antibacterial.

[0039] The waste gas to be purified is made to alternately pass through the electrostatic dust removal area and the glow plasma area which are arranged in sequence.

[0040] In some embodiments, at least two first spike structures are disposed on each negative electrode plate, and each negative electrode plate releases negative charge through the tips of the at least two first spike structures; the at least two first spike structures are alternately disposed on the plate surfaces on both sides of each negative electrode plate.

[0041] Furthermore, each positive electrode plate is provided with at least two second spike structures corresponding to the arrangement of the at least two first spike structures on each negative electrode plate.

[0042] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate facing it to form an electrostatic dust removal area.

[0043] Furthermore, the plane on the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the opposite positive electrode plate to form a glow plasma region.

[0044] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures includes at least two discharge tips, wherein the at least two discharge tips include four discharge tips arranged centrally and symmetrically, or three discharge tips arranged in a triangle.

[0045] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or by separately processing each first spike structure and then welding each first spike structure to each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or by separately processing each second spike structure and then welding each second spike structure to each positive electrode plate.

[0046] In some embodiments, when punching each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, a first spike structure and a second spike structure are punched out on one side of the plate surface, or two first spike structures and two second spike structures stacked together are punched out in the same direction on both side plate surfaces at the same time.

[0047] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first spike structure and each second spike structure are set at the center of a convex position or a concave position of the wavy plate surface.

[0048] In some embodiments, at least one liquid guide channel is disposed on the plate surface of each negative electrode plate and each positive electrode plate.

[0049] In some embodiments, the electrostatic precipitator further comprises at least one group of nozzles, and the at least one group of nozzles is arranged on the wall surface of the shell near the insulator of the electrostatic precipitator for cleaning the insulator.

[0050] In some embodiments, the electrostatic field dust removal device also includes at least one shell, and a group of negative electrode plates and positive electrode plates are integrated and installed in each shell of the at least one shell to form an electrostatic field dust removal unit; the integrated electrostatic field dust removal unit is fixed by connecting each adjacent shell.

[0051] The electrostatic field dust removal device provided by the embodiments of the present invention, as well as the manufacturing method and purification method thereof, have at least one or part of the following advantages:

[0052] (1) The electrostatic precipitator provided in the embodiment of the present invention realizes two negative charge release modes by correspondingly arranging spike structures at different positions on the positive and negative electrode plates, thereby forming an electrostatic precipitator region and a glow plasma region, and purifies and ionizes the exhaust gas at the same time, thereby enhancing the dust removal effect and achieving deodorization and antibacterial properties;

[0053] (2) The electrostatic precipitator provided by the embodiment of the present invention can significantly reduce the operating current and power consumption by staggered arrangement of positive and negative electrode plates and discharge at the tip of the spike structure;

[0054] (3) The electrostatic precipitator provided by the embodiment of the present invention effectively prevents the discharge tips from being passivated during repeated use by arranging a plurality of discharge tips on the spike structure, thereby extending the service life of the spike structure;

[0055] (4) The electrostatic precipitator provided by the embodiment of the present invention forms a spike structure by punching on the positive and negative electrode plates, which simplifies the processing, reduces the manufacturing cost, and ensures uniform structural stress;

[0056] (5) The electrostatic precipitator provided in the embodiment of the present invention sets the positive and negative electrode plates as corrugated plates, appropriately bends the exhaust gas flow channel, guides the exhaust gas flow, and improves the efficiency of exhaust gas dust removal and purification;

[0057] (6) The electrostatic precipitator provided by the embodiment of the present invention provides liquid guide grooves on the positive and negative electrode plates, which helps the water vapor in the dust removal process to avoid the discharge tip, avoid the accumulation of water vapor causing discharge ignition and causing the device to short-circuit, and ensure safe operation;

[0058] (7) The electrostatic precipitator provided in the embodiment of the present invention realizes cleaning and maintenance of the positive and negative electrode plates by arranging a spray structure in the liquid guide channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] These and / or other aspects and advantages of the present invention will become apparent and readily understood from the following description of the preferred embodiments in conjunction with the accompanying drawings, in which:

[0060] Figure 1 A schematic diagram of the structure of an electrostatic precipitator according to an embodiment of the present invention;

[0061] Figure 2 A schematic structural diagram of an integrated electrostatic precipitator according to another embodiment of the present invention;

[0062] Figure 3 for Figure 1 A schematic structural diagram of a negative electrode plate of an electrostatic precipitator shown;

[0063] Figure 4 for Figure 1 A schematic structural diagram of a positive electrode plate of an electrostatic precipitator shown;

[0064] Figure 5 for Figure 1 Schematic diagram of the negative charge release state of the electrostatic precipitator during discharge shown;

[0065] Figure 6 for Figure 5 A partially enlarged schematic diagram of

[0066] Figure 7 for Figure 3 A top view of a first spike structure on a negative electrode plate shown;

[0067] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure of the first spike structure shown;

[0068] Fig.9A and Fig. 9B for Figure 3 Schematic diagrams of two layouts of the first spike structure on the negative electrode plate shown;

[0069] Fig.10 for Figure 1 A schematic diagram of an electrostatic precipitator with insulators on its housing is shown. DETAILED DESCRIPTION

[0070] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0071] Electrostatic dust removal is a method of gas dust removal. In a strong electric field, dust-containing gas molecules are ionized into positive ions and electrons. The electrons encounter dust particles while moving toward the positive electrode, causing the dust particles to carry a negative charge and be adsorbed and deposited on the positive electrode to be collected. It is commonly used for the collection and purification of waste gas in industrial production processes such as factories and power stations that use coal as fuel, metallurgy, printing and dyeing, and chemicals.

[0072] Electrostatic dust removal equipment has many advantages, such as high purification efficiency, low resistance loss, high temperature resistance, and large processing capacity. However, existing electrostatic dust removal equipment has a complex structure and high requirements for equipment transportation, installation, and maintenance. On the other hand, its dust removal process has certain selectivity for the composition of the exhaust gas (such as the type of dust and its corresponding resistance value) and the state of the exhaust gas (such as the temperature and humidity of the exhaust gas), and the dust removal effect is obviously different under different conditions.

[0073] Taking into account the problems existing in the above-mentioned electrostatic dust removal equipment, an embodiment of the present invention proposes a novel electrostatic field dust removal device 100, which optimizes the discharge mode of the electrostatic field and simultaneously realizes the corona dust removal and purification of the waste gas and the plasma ionization antibacterial and deodorization.

[0074] See also Figure 1 , showing the overall structure of the electrostatic field dust removal device 100. Specifically, at least one negative electrode plate 10 and at least one positive electrode plate 20 are fixedly installed inside the shell 30. The at least one negative electrode plate 10 and the at least one positive electrode plate 20 are alternately arranged in parallel, and the at least one negative electrode plate 10 is used to release negative charges, and the at least one positive electrode plate 20 is used to receive the negative charges released by the at least one negative electrode plate 10. An electrostatic dust removal area and a glow plasma area are formed between each negative electrode plate 11 of the at least one negative electrode plate 10 and each positive electrode plate 21 of the at least one positive electrode plate 20. The exhaust gas flows between each negative electrode plate 11 and each positive electrode plate 21 and is alternately purified, wherein it is corona purified in the electrostatic dust removal area and ionized in the glow plasma area.

[0075] In one example, if Figure 1As shown, the electrostatic field dust removal device 100 is also provided with a negative electrode plate positioning tube 31 for fixing at least one negative electrode plate 10, and the negative electrode plate positioning tube 31 passes through the housing 30 through the positioning holes correspondingly provided on each negative electrode plate 11 and the end surface of the housing 30 and fixes at least one negative electrode plate 10. Similarly, a positive electrode plate positioning tube 32 is provided to fix at least one positive electrode plate 20.

[0076] In one example, an insulator 33 and a high-voltage connector 34 are also provided on the outside of the shell 30 of the electrostatic field dust removal device 100. Since the negative electrode plate 11 and the positive electrode plate 21 responsible for discharging to form an electrostatic field are both arranged inside the shell 30 and are both plate-shaped structures, the insulator 33 can be uniformly arranged on the outside of the shell 30, which can be isolated from the electric field and exhaust gas, and hidden by the shell 30, thereby improving the operating stability of the electrostatic field dust removal device 100.

[0077] In one example, see Figure 2 , showing that several Figure 1 The electrostatic field dust removal device 1000 shown is an integrated electrostatic field dust removal device 1000 in which the electrostatic field dust removal devices 100 are stacked and combined. Alternatively, the integrated electrostatic field dust removal device 1000 includes at least one shell, and a group of negative electrode plates (including at least one negative electrode plate 10) and positive electrode plates (including at least one positive electrode plate 20) are integrated and installed in each shell 30 of the at least one shell to form an electrostatic field dust removal unit 100', and the integrated electrostatic field dust removal device 1000 is formed by connecting and fixing each adjacent shell 30 to integrate the electrostatic field dust removal unit 100'. Figure 2 As shown, a group of 3×3 arrangements and an integrated electrostatic field dust removal device 1000 with the same electrode plate installation method for each electrostatic field dust removal unit 100' are shown. For the integrated electrostatic field dust removal device 1000, several electrostatic field dust removal units 100' need to be integrated or how to arrange several electrostatic field dust removal units 100' and other design details and schemes, those skilled in the art can arrange and combine them according to the actual use scenario, such as exhaust gas emission, power consumption, site layout, etc. This example is only an illustrative example, and those skilled in the art should not understand it as a limitation of the present invention.

[0078] In one example, at least one negative electrode plate 10 and at least one positive electrode plate 20 need to be designed in a matching manner to ensure their discharge paths and form a uniform and stable electrostatic field in the housing 30 of an electrostatic field dust removal device 100. Figure 3 The structure of a negative electrode plate 11 is shown. Figure 4 FIG. 2 shows the structure of a positive electrode plate 21. Figure 3 and Figure 4 Based on the structure of the positive and negative plates shown, see Figure 5The discharge paths of several positive and negative plates arranged in parallel and staggered manner inside the housing 30 are shown.

[0079] Specifically, in one example, combining Figure 3 and Figure 5 As shown, at least two first spike structures 111 are provided on each negative electrode plate 11, and each negative electrode plate 11 releases negative charges through the tips of the at least two first spike structures 111. Figure 5 As shown, at least two first spike structures 111 are alternately arranged on the plate surfaces on both sides of each negative electrode plate 11. Figure 4 and Figure 5 As shown, each positive electrode plate 21 is provided with at least two second spike structures 211 corresponding to the at least two first spike structures 111 on each negative electrode plate 11. Figure 5 and Figure 6 In the partial enlarged diagram shown in the figure, for example, a first spike structure 111 with a pointed end upward is set at the rightmost end of the upper plate surface of the first negative electrode plate 11 in the figure, and the two adjacent upper and lower positive electrode plates 21 are correspondingly provided with a second spike structure 211 at the same position and direction. Other first spike structures 111 and second spike structures 211 are set in the same manner.

[0080] Specifically, in one example, Figure 3 and Figure 4 As shown, multiple rows and columns of first spike structures 111 are respectively arranged on each negative electrode plate 11 (each positive electrode plate 21 is similarly arranged). Alternatively, each first spike structure 111 is evenly distributed on a negative electrode plate 11, that is, on each row, the center distance between each two adjacent first spike structures 111 is fixedly set to a first preset distance, and on each column, the center distance between each two adjacent first spike structures 111 is fixedly set to a second preset distance. Of course, those skilled in the art will understand that the first preset distance and the second preset distance may be equal or unequal, and the specific values ​​of the first preset distance and the second preset distance need to be matched and designed according to the actual dust removal requirements, such as the exhaust gas treatment volume, dust removal site, power consumption requirements, etc. This example is only an illustrative example, and those skilled in the art should not be understood as a limitation of the present invention.

[0081] Furthermore, in one example, considering the combined influence of ambient temperature and humidity and exhaust gas composition during electrostatic precipitator removal, it is very likely that water vapor will be generated in the exhaust gas, which poses a serious safety hazard to the electrostatic precipitator. Figure 3 and Figure 4As shown, at least one liquid guide channel is respectively arranged on the plate surface of each negative electrode plate 11 and each positive electrode plate 21. Specifically, for example, three groups of first liquid guide channels 112 are arranged on the plate surface of the negative electrode plate 11, and three groups of second liquid guide channels 212 are arranged on the plate surface of the positive electrode plate 21. In this way, the water vapor in the exhaust gas can be gathered inside the first liquid guide channel 112 and the second liquid guide channel 212, and flow downward inside and gather at the bottom for collection or treatment. It is prevented that the water vapor stays on the negative electrode plate 11 or the positive electrode plate 21 to cause electric shock and ignition, and the electrostatic field dust removal device 100 is prevented from having safety problems such as short circuit and fire during operation. For the position, number, specific structural shape, etc. of the guide channel design, only an illustrative example is provided in this example, and those skilled in the art can make adaptive adjustments according to the actual dust removal scene and processing technology, and this example should not be understood as a limitation of the present invention.

[0082] Specifically, in one example, combining Figure 5 and Figure 6 Taking one of the negative electrode plates 11 as an example, when the electrostatic field dust removal device 100 is started, two functional areas can be formed simultaneously within the electrostatic field discharge range, one functional area is the electrostatic dust removal area, and the other functional area is the glow plasma area, that is, Figure 5 Region A shown is the electrostatic dust removal region, and region B is the glow plasma region. This requires that two discharge paths be set correspondingly on the same negative electrode plate 11. Therefore, alternatively, the negative electrode plate 11 is first set to a structure with two layers of plate surfaces, and then a number of first spike structures 111 on the same row or column are staggered on the two layers of the negative electrode plate 11, and the tip of the first spike structure 111 points to the outside of the plate surface on which it is located. Similarly, the positive electrode plate 21 and the second spike structure 211 thereon are set accordingly. Then, after the above settings, if Figure 5 and Figure 6 As shown, a first spike structure 111 on the upper plate surface 11a of the negative electrode plate 11 discharges upward to the lower plate surface 21b of the adjacent positive electrode plate 21, forming area A, which is used to ionize the exhaust gas and adsorb impurities or oil fume particles that need to be purified. At the same time, the first spike structure 111 adjacent to it is set on the lower plate surface 11b of the negative electrode plate 11, and the corresponding upper plate surface 11a is a plane, which discharges upward to the same positive electrode plate 21, and the lower plate surface 21b of the positive electrode plate 21 is provided with a second spike structure 211 here, which receives the negative charge from the negative electrode plate 11, forming area B, which is used for ionization purification and also forms a glow plasma zone, generates a large amount of plasma to form a plasma barrier, and physically bombards the particles that need to be purified, changes their morphology, and increases the function of sterilization and deodorization.

[0083] Area A and area B are purified alternately to improve the exhaust gas purification efficiency and optimize the purification effect. Those skilled in the art will appreciate that the specific location of the first spike structure 111 is only an illustrative example. Figure 5 and Figure 6 The two adjacent first spike structures 111 shown are arranged one on the upper board surface 11a and the other on the lower board surface 11b, and so on. Of course, it can also be arranged that every two first spike structures 11 are arranged on the upper board surface 11a, and the next two first spike structures 11 are arranged on the lower board surface 11b, and so on. Therefore, this example should not be understood as a limitation to the present invention.

[0084] Specifically, in one example, Figure 5 As shown, in order to ensure that the exhaust gas can be fully retained after entering the electrostatic field dust removal device 100 so that the impurities, dust, oil fume particles, etc. therein can be fully ionized and purified, the plate surface of the negative electrode plate 11 and the positive electrode plate 21 are set to be a wavy plate surface. The arrangement of the wavy plate surface makes the electrostatic field space channel also present a wavy bending channel, and the exhaust gas can be fully ionized and purified through the bending channel, further improving the electrostatic field purification efficiency.

[0085] Further, in one example, corresponding to the example in which the first spike structure 111 and the second spike structure 211 are completely evenly distributed on the negative electrode plate 11 and the positive electrode plate 21, alternatively, each first spike structure 111 and each second spike structure 211 are arranged at the center of the convex position or the center of the concave position of the wavy plate surface. Specifically, as Figure 5 and Figure 6 As shown, alternatively, the first spike structure 111 or the second spike structure 211 located on the upper plate surface is set at the center of the convex position of the wavy plate surface of the negative electrode plate 11 or the positive electrode plate 21. Correspondingly, the first spike structure 111 or the second spike structure 211 located on the lower plate surface is set at the center of the concave position of the wavy plate surface of the negative electrode plate 11 or the positive electrode plate 21.

[0086] In the above example, the design of the wavy plate surface is only an exemplary description. Those skilled in the art can make appropriate designs according to actual dust removal requirements and site conditions to construct suitable exhaust gas flow bending channels. This example should not be a limitation to the present invention.

[0087] In one example, see Figure 7 , shows a top view of the first spike structure 111, corresponding to each first spike structure 111 on the negative electrode plate 11 including at least two discharge tips. Figure 7As shown, this example sets a total of four discharge tips 111a, 111b, 111c and 111d that are arranged symmetrically. That is to say, although each first spike structure 111 is a single-point discharge, it has four single-point spikes as discharge tips, which can increase the service life of the discharge tip. If there is only one spike, the spike will easily become passivated during frequent use, and the passivated spike will lose its discharge function. Local discharge failure will occur on the same negative electrode plate 11, affecting the stability and uniformity of the electrostatic field on the negative electrode plate 11, and further affecting the overall purification efficiency of the electrostatic field dust removal device 100. The positive electrode plate 21 can be set corresponding to the setting of the negative electrode plate 11, which will not be repeated here.

[0088] Furthermore, in one example, the number of discharge tips provided on the first spike structure 111 or the second spike structure 211 can be adjusted according to actual conditions, such as the four in the above example, or two, six, etc., which are evenly arranged in pairs, or three (an odd number) of discharge tips are arranged in a triangle, mainly to ensure stable and uniform discharge.

[0089] Further, see Figure 8 , shows an example of a discharge tip, that is, each discharge tip presents a triangular structure, and a tip of the triangular structure points to the outside of the plate surface where it is located. Of course, those skilled in the art can adjust the structure of the discharge tip by adjusting the manufacturing process, such as setting an opening at the tip pointing to the outside, setting a plurality of forked tips of different heights, etc. This example is only an illustrative example, and those skilled in the art should not understand it as a limitation of the present invention.

[0090] In one example, each first spike structure 111 can be formed in the following manner: by stamping each negative electrode plate 11 or separately processing each first spike structure 111 and then welding it to the corresponding position of the corresponding plate surface of each negative electrode plate 11. The second spike structure 211 can also be manufactured in the same manner as the first spike structure 111, which will not be repeated here. Alternatively, in this example, the plate surfaces of the negative electrode plate 11 and the positive electrode plate 21 are first manufactured by an integral stretch forming process, and then the corresponding discharge tips (four spikes are set at one discharge point) are manufactured by stamping according to the pre-planned layout of the first spike structure 111 and the second spike structure 211 to form the first spike structure 111 and the second spike structure 211.

[0091] In one example, see Fig.9A and Fig. 9B, taking the negative electrode plate surface 11 as an example, two layout modes of the first spike structure 111 on the negative electrode plate surface 11 are shown. In particular, when each first spike structure 111 on each negative electrode plate 11 is stamped, as shown in FIG. Fig.9A As shown, two first spike structures 111 stacked together can be formed by punching the two side panels simultaneously in the same direction, for example, Figure 5 and Figure 6 As shown, a first spike structure 111 is punched at the same position of the upper plate surface 11a and the lower plate surface 11b, and the centers of the two first spike structures 111 are coaxial and their spike directions are in the same direction. Fig. 9B As shown, it is also possible to combine the side panels (for example Figure 5 and Figure 6 A first spike structure 111 is punched on the lower plate surface 11b), that is, if a first spike structure 111 is punched on the lower plate surface 11b, then relatively, its upper plate surface 11a is a plane. Similarly, the same layout design can also be selected on the positive electrode plate 21, which will not be repeated here.

[0092] In one example, see Fig.10 , showing the specific position of the insulator 33 arranged on the electrostatic field dust removal device 100. It can be seen that the insulator 33 can actually be hidden in a relatively closed space by the shell 30 and isolated from the negative electrode plate 11 and the positive electrode plate 21, and is also isolated from the exhaust gas. Therefore, the insulator 33 can be cleaned centrally by adding a spray device. Alternatively, at least one group of nozzles (not shown) is provided at a position of the shell 30 close to the insulator 33, such as on the top inner wall of the shell 30 close to the upper insulator 33, for spraying and cleaning the insulator 33. Alternatively, the number of nozzles can also be increased at appropriate positions such as the middle and bottom of the shell. This example is only an illustrative example and those skilled in the art should not be understood as a limitation of the present invention.

[0093] In one example, referring to Table 1 and Table 2, taking an electrostatic precipitator with a wind volume of 40,000 as an example, the volume, power, adsorption area and other parameters of the electrostatic field dust removal device 100 of the present invention and the existing annular electrostatic field device are compared. Compared with the existing annular electrostatic field design, the electrostatic field dust removal device 100 can reduce the volume by about 1 / 4 on the basis of achieving the same exhaust gas dust removal amount, and can reduce the power consumption by about 1 / 3. While improving the purification efficiency, the working current is greatly reduced, thereby reducing energy consumption.

[0094] Table 1 Performance parameter comparison between electrostatic field dust removal device and annular electrostatic field at 40,000 air volume

[0095] long Width high Discharge distance power supply Number of power supplies Electrostatic field dust removal device 1070m 3000m 2500m 16m 1500W 6 Toroidal electrostatic field 800m 3000m 2500m 25m 800W 3

[0096] Table 2 Comparison of purification efficiency between electrostatic field dust removal device and annular electrostatic field

[0097]

[0098]

[0099] The present invention also provides a plurality of embodiments according to the following aspects, which are specifically as follows:

[0100] Aspect 1: A method for manufacturing an electrostatic field dust removal device, the manufacturing method comprising:

[0101] manufacturing at least one negative electrode plate for releasing negative charges;

[0102] Manufacturing at least one positive electrode plate, arranged alternately and in parallel with at least one negative electrode plate, for receiving negative charges released by at least one negative electrode plate;

[0103] An electrostatic dust removal region and a glow plasma region are formed between each negative electrode plate of at least one negative electrode plate and each positive electrode plate of at least one positive electrode plate, and the exhaust gas flows between each negative electrode plate and each positive electrode plate and is purified alternately, wherein the exhaust gas is corona purified in the electrostatic dust removal region and ionized in the glow plasma region.

[0104] Aspect 2: A manufacturing method according to Aspect 1, wherein at least two first spike structures are installed on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of at least two first spike structures; and at least two first spike structures are alternately installed on the plate surface on both sides of each negative electrode plate.

[0105] Aspect 3: According to the manufacturing method described in Aspect 2, at least two second spike structures are installed on each positive electrode plate in accordance with the arrangement of at least two first spike structures on each negative electrode plate.

[0106] Aspect 4: A manufacturing method according to Aspect 3, wherein each of the at least two first spike structures and each of the at least two second spike structures includes at least two discharge tips, wherein the at least two discharge tips include four discharge tips arranged symmetrically with respect to the center, or three discharge tips arranged in a triangle.

[0107] Aspect 5: A manufacturing method according to Aspect 4, wherein each first spike structure is formed by stamping each negative electrode plate, or by separately processing each first spike structure and then welding each first spike structure to each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or by separately processing each second spike structure and then welding each second spike structure to each positive electrode plate.

[0108] Aspect 6: According to the manufacturing method according to claim 5, when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, a first spike structure and a second spike structure are stamped on one side of the plate surface, or two first spike structures and two second spike structures stacked together are stamped in the same direction on both side plate surfaces at the same time.

[0109] Aspect 7: A manufacturing method according to any one of Aspects 1-6, wherein the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first spike structure and each second spike structure are set at the center of a raised position or a recessed position of the wavy plate surface.

[0110] Aspect 8: According to the manufacturing method described in Aspect 7, at least one liquid guide channel is provided on the plate surface of each negative electrode plate and each positive electrode plate.

[0111] Aspect 9: According to the manufacturing method described in Aspect 8, the electrostatic precipitator further includes at least one group of nozzles, which are arranged on the wall surface of the shell near the insulator of the electrostatic precipitator for cleaning the insulator.

[0112] Aspect 10: A manufacturing method according to Aspect 9, wherein the electrostatic field dust removal device further comprises at least one shell, and a group of negative electrode plates and positive electrode plates are integrated and installed in each shell of the at least one shell to form an electrostatic field dust removal unit; and the electrostatic field dust removal unit is integrated by connecting and fixing each adjacent shell.

[0113] Aspect 11: A purification method using an electrostatic field dust removal device manufactured according to any one of aspects 1 to 10, the purification method comprising:

[0114] The exhaust gas to be purified passes through an electrostatic precipitator area and is corona purified in the electrostatic precipitator area, wherein the electrostatic precipitator area is formed by the tips of at least two first spike structures on each negative electrode plate releasing negative charges to the plate surface of the positive electrode plate facing the tip;

[0115] The waste gas to be purified enters the glow plasma area after passing through the electrostatic dust removal area. The glow plasma area is formed by releasing negative charges from the plane of the opposite side of the plate surface where at least two first spike structures on each negative electrode plate are located to the tips of at least two second spike structures on the positive electrode plate facing it. The waste gas is ionized in the glow plasma area to achieve deodorization and antibacterial.

[0116] The waste gas to be purified is made to alternately pass through the electrostatic dust removal area and the glow plasma area which are arranged in sequence.

[0117] In some embodiments, at least two first spike structures are disposed on each negative electrode plate, and each negative electrode plate releases negative charge through the tips of the at least two first spike structures; the at least two first spike structures are alternately disposed on the plate surfaces on both sides of each negative electrode plate.

[0118] Furthermore, each positive electrode plate is provided with at least two second spike structures corresponding to the arrangement of the at least two first spike structures on each negative electrode plate.

[0119] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate facing it to form an electrostatic dust removal area.

[0120] Furthermore, the plane on the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the opposite positive electrode plate to form a glow plasma region.

[0121] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures includes at least two discharge tips, wherein the at least two discharge tips include four discharge tips arranged centrally and symmetrically, or three discharge tips arranged in a triangle.

[0122] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or by separately processing each first spike structure and then welding each first spike structure to each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or by separately processing each second spike structure and then welding each second spike structure to each positive electrode plate.

[0123] In some embodiments, when punching each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, a first spike structure and a second spike structure are punched out on one side of the plate surface, or two first spike structures and two second spike structures stacked together are punched out in the same direction on both side plate surfaces at the same time.

[0124] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first spike structure and each second spike structure are set at the center of a convex position or a concave position of the wavy plate surface.

[0125] In some embodiments, at least one liquid guide channel is disposed on the plate surface of each negative electrode plate and each positive electrode plate.

[0126] In some embodiments, the electrostatic precipitator further comprises at least one group of nozzles, and the at least one group of nozzles is arranged on the wall surface of the shell near the insulator of the electrostatic precipitator for cleaning the insulator.

[0127] In some embodiments, the electrostatic field dust removal device also includes at least one shell, and a group of negative electrode plates and positive electrode plates are integrated and installed in each shell of the at least one shell to form an electrostatic field dust removal unit; the integrated electrostatic field dust removal unit is fixed by connecting each adjacent shell.

[0128] The electrostatic field dust removal device provided by the embodiments of the present invention, as well as the manufacturing method and purification method thereof, have at least one or part of the following advantages:

[0129] (1) The electrostatic precipitator provided in the embodiment of the present invention realizes two negative charge release modes by correspondingly arranging spike structures at different positions on the positive and negative electrode plates, thereby forming an electrostatic precipitator region and a glow plasma region, and purifies and ionizes the exhaust gas at the same time, thereby enhancing the dust removal effect and achieving deodorization and antibacterial properties;

[0130] (2) The electrostatic precipitator provided by the embodiment of the present invention can significantly reduce the operating current and power consumption by staggered arrangement of positive and negative electrode plates and discharge at the tip of the spike structure;

[0131] (3) The electrostatic precipitator provided by the embodiment of the present invention effectively prevents the discharge tips from being passivated during repeated use by arranging a plurality of discharge tips on the spike structure, thereby extending the service life of the spike structure;

[0132] (4) The electrostatic precipitator provided by the embodiment of the present invention forms a spike structure by punching on the positive and negative electrode plates, which simplifies the processing, reduces the manufacturing cost, and ensures uniform structural stress;

[0133] (5) The electrostatic precipitator provided in the embodiment of the present invention sets the positive and negative electrode plates as corrugated plates, appropriately bends the exhaust gas flow channel, guides the exhaust gas flow, and improves the efficiency of exhaust gas dust removal and purification;

[0134] (6) The electrostatic precipitator provided by the embodiment of the present invention provides liquid guide grooves on the positive and negative electrode plates, which helps the water vapor in the dust removal process to avoid the discharge tip, avoid the accumulation of water vapor causing discharge ignition and causing the device to short-circuit, and ensure safe operation;

[0135] (7) The electrostatic precipitator provided in the embodiment of the present invention realizes cleaning and maintenance of the positive and negative electrode plates by arranging a spray structure in the liquid guide channel.

[0136] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrostatic field dust removal device, characterized in that: The electrostatic field dust removal device comprises: At least one negative electrode plate, used for releasing negative charges, at least two first spike structures are arranged on each negative electrode plate of the at least one negative electrode plate, the at least two first spike structures are respectively arranged alternately on the plate surface on both sides of each negative electrode plate, and each negative electrode plate releases negative charges through the tips of the at least two first spike structures; At least one positive electrode plate is arranged alternately and in parallel with the at least one negative electrode plate, and is used to receive negative charges released by the at least one negative electrode plate, and each of the at least one positive electrode plate is provided with at least two second spike structures in accordance with the arrangement of the at least two first spike structures on each negative electrode plate; The plate surface of each negative electrode plate and each positive electrode plate is set to be a wavy plate surface; Each of the at least two first spike structures and each of the at least two second spike structures are arranged at the center of the convex position or the center of the concave position of the wavy plate surface; Wherein, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate facing it to form an electrostatic dust removal area, and the plane on the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the positive electrode plate facing it to form a glow plasma area; The exhaust gas flows between each of the negative electrode plates and each of the positive electrode plates and is alternatively purified, wherein it is corona purified in the electrostatic precipitator region and ionized in the glow plasma region.

2. The electrostatic field dust removal device according to claim 1, characterized in that: Each of the at least two first spike structures and each of the at least two second spike structures comprises at least two discharge tips, The at least two discharge tips include four discharge tips arranged symmetrically with respect to the center, or three discharge tips arranged in a triangle.

3. The electrostatic field dust removal device according to claim 2, characterized in that: Each of the first spike structures is formed by punching each of the negative electrode plates, or After each of the first spike structures is processed separately, each of the first spike structures is welded onto each negative electrode plate; Each of the second spike structures is formed by punching each of the positive electrode plates, or Each second spike structure is processed separately and then welded to each positive electrode plate.

4. The electrostatic field dust removal device according to claim 3, characterized in that: When punching each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, A first spike structure and a second spike structure are formed by punching on one side of the plate surface, or Two first spike structures and two second spike structures stacked together are formed by punching the two side plate surfaces simultaneously in the same direction.

5. The electrostatic field dust removal device according to any one of claims 1 to 4, characterized in that: At least one liquid guide channel is respectively arranged on the plate surface of each negative electrode plate and each positive electrode plate.

6. The electrostatic field dust removal device according to claim 5, characterized in that: The electrostatic field dust removal device also includes at least one group of nozzles, which are arranged on the housing of the electrostatic field dust removal device and close to the insulators of the electrostatic field dust removal device for cleaning the insulators.

7. The electrostatic field dust removal device according to claim 6, characterized in that: The electrostatic field dust removal device further comprises at least one housing, in each of which a group of negative electrode plates and positive electrode plates are integrated and installed to form an electrostatic field dust removal unit; The electrostatic field dust removal unit is integrated by connecting and fixing each adjacent shell.

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