A wet electrostatic precipitator with an adjustable air distribution device

Abstract

The present invention belongs to the technical field of flue gas purification, and discloses a wet electrostatic precipitator with an adjustable air distribution device. It includes an upper head, a shell and a lower head, and the inside of the shell includes an adjustable air distribution device, a spray device, a honeycomb dust removal component, a spray device, and a sewage filter cover. By adjusting the air distribution device, the air flow velocity of each air distribution hole can be controlled, so that the equipment can achieve the optimal air flow distribution rate. This device has the characteristics of suppressing secondary dust, good air distribution effect, high purification efficiency, long maintenance cycle, and long equipment life.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas purification and relates to a wet electrostatic precipitator with an adjustable air equalizing device. Background Art

[0002] As a highly efficient purification device for capturing fine particles and mist particles, wet electrostatic precipitator is widely used in the purification treatment of flue gas terminals.

[0003] Existing wet electrostatic precipitators are mainly divided into two types in terms of structure: wire plate type and wire tube type. The dust collecting pole of the wire plate type wet electrostatic precipitator is a parallel flat plate, and the airflow flows horizontally through the electric field area; while the dust collecting pole of the tube type wet electrostatic precipitator is a parallel conductive tube, and the airflow flows vertically through the electric field area. Compared with traditional plate type wet electrostatic precipitators or circular tube type wet electrostatic precipitators, the honeycomb tube type wet electrostatic precipitators have a larger dust collecting area. Under the same processing capacity, the honeycomb type has a small volume, less materials, and low investment cost. However, since most tube type wet electrostatic precipitators use side air intake and top air outlet, and the inlet flow rate is relatively large, the airflow distribution is often uneven. The increased dust removal efficiency at low flow rates is far from enough to make up for the reduced efficiency at high flow rates, resulting in a reduction in overall efficiency. At the same time, the service life of the precipitator is also greatly reduced. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a wet electrostatic precipitator with an adjustable air distribution device, which has the characteristics of good air flow distribution effect, large dust collecting area and high purification efficiency.

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions: A wet electrostatic precipitator with an adjustable air distribution device comprises an upper head, a shell and a lower head, wherein the upper head is arranged at the upper end of the shell, and the lower head is arranged at the lower end of the shell; a honeycomb dust removal component and an adjustable air distribution device are arranged inside the shell, a sewage filter cover is arranged in the lower head, and the lower end of the sewage filter cover is connected to a circulating water pipeline; a drain port is arranged at the bottom of the shell; an air outlet is arranged at the top of the shell, and an insulating box is arranged outside the upper head;

[0006] The honeycomb dust removal assembly includes a cathode wire, a honeycomb anode tube, a cathode suspension device and a cathode anti-sway device; each honeycomb anode tube is provided with a cathode wire, the cathode suspension device is arranged on the top of the honeycomb anode tube, and the cathode anti-sway device is arranged on the bottom of the honeycomb anode tube; an air inlet is provided on the lower side of the shell, and an adjustable air equalization device is provided on the upper part of the air inlet.

[0007] The adjustable air balancing device includes an air flow distribution plate, an air blocking plate, an air balancing air hole, an air hole adjustment rod, and a fire blocking plate. The adjustable air balancing device has multiple groups of air balancing air holes, each of which corresponds to a honeycomb anode tube, and a fire blocking plate is provided on the outside of the air balancing air hole; the air balancing air hole and the air hole adjustment rod are connected through the air flow distribution plate, and two semicircular holes are opened on the air flow distribution plate corresponding to each air balancing air hole, a crossbeam is provided in the middle of the semicircular holes, and a threaded hole for the air hole adjustment rod to pass through is provided in the center of the crossbeam.

[0008] The adjustable air distribution device is provided with a spray device on the upper part, which can adjust the pressure head and flow rate;

[0009] The upper part of the honeycomb anode tube is provided with a spray device, which can adjust the pressure head and flow rate;

[0010] The adjustable air distribution device, the spray device, the honeycomb dust removal assembly, and the spray device are sequentially arranged in the housing along the airflow direction;

[0011] The pore adjustment rod comprises a pore adjustment screw and an adjustment nut; the pore adjustment screw and the adjustment nut are connected;

[0012] Furthermore, the air holes are cylindrical.

[0013] Furthermore, the spray device adopts a hollow cone nozzle, and the shower device adopts a solid cone nozzle.

[0014] Furthermore, the sewage filter cover is double-layered and has built-in high-efficiency filter cotton.

[0015] Furthermore, the cathode wire is a ribbon-shaped spiral cathode wire made of duplex stainless steel.

[0016] Furthermore, the honeycomb anode tube is made of stainless steel, and its inscribed circle diameter can be 150-400 mm, and its length can be 2-6 m.

[0017] Furthermore, the insulation box is provided with an insulation porcelain sleeve, on which there is a high voltage power introduction terminal, which is connected to the cathode line.

[0018] Threaded fitting devices are provided between the air blocking plate and the air hole adjustment rod, and between the air hole adjustment rod and the air flow distribution plate, so that the height between the air blocking plate and the air hole can be adjusted at the lower side of the adjustable air equalizing device or at the upper side of the adjustable air equalizing device.

[0019] In another preferred embodiment of the present invention, the air hole adjustment rod is placed on one side of the air blocking plate and can be adjusted by changing the angle between the air blocking plate and the air equalizing air hole.

[0020] The purification process of a wet electrostatic precipitator with an adjustable air-balancing device is as follows: the flue gas enters the equipment from the air inlet, the airflow is evenly distributed in each channel through the adjustable air-balancing device, and enters the honeycomb dust removal component through the spray device. The gas around the cathode line is ionized by the strong field strength generated by high voltage electricity, and a large number of ions are generated to collide with dust or water mist to charge it. After the water mist combines with the dust, the resistivity of the dust can be reduced and the particle size can be increased. In addition, under the action of the DC high voltage, the water mist is charged and split and further atomized. Since the dust moving with the airflow and the water mist have relative motion, the charged water mist can capture dust particles through inertial collision, adsorption condensation, diffusion and the like. The dust particles reach the honeycomb anode tube driven by the electric field force, and are discharged into the lower head of the equipment along with the water film evenly distributed on the surface of the honeycomb anode tube. The circulating water enters the circulating water pipeline after being purified by the sewage filter cover, and the clean flue gas is discharged to the chimney through the air outlet.

[0021] The spray device located on the upper part of the honeycomb dust removal component can periodically clean the honeycomb anode tube and cathode wire, and its flow rate can be adjusted according to the dust accumulation of the honeycomb anode tube and cathode wire; it extends the maintenance cycle, inhibits secondary dust in principle, effectively eliminates the back corona phenomenon, and improves the purification efficiency per unit area.

[0022] When debugging the equipment, connect the fan and use a hot wire anemometer to test the gas velocity and resistance of each air balancing hole. By rotating the hole adjustment rods or wind resistance plates on the air flow distribution plates corresponding to multiple groups of cylindrical air balancing holes, the height or angle between the wind resistance plates and the air flow distribution plates is changed to make the mean square deviation of the air flow velocity and resistance of each air balancing hole within the set value, so that the air flow velocity of each honeycomb anode tube channel is close to the same, reducing the problem of reduced efficiency caused by high flow rate in some channels, which makes the dust not have time to be charged or move to the surface of the plate and be carried out of the electric field channel by the air flow, thereby allowing the equipment to achieve the optimal air flow distribution rate and maximize the flue gas purification efficiency.

[0023] The adjustable air balancing device adjusts the air flow resistance and speed through each air balancing air hole by adjusting the height or angle between the corresponding wind blocking plates and the air flow distribution plates on multiple groups of cylindrical air balancing air holes, and controls the mean square deviation of the air flow speed of each air balancing air hole within the set value, so that the device can achieve the optimal air flow distribution rate.

[0024] The beneficial effects of the present invention compared with the prior art are:

[0025] (1) By adjusting the height or angle of the air baffle in the adjustable air balancing device, the air volume and resistance of the air flow passing through each air balancing hole can be changed, so that the air flow velocity of each honeycomb anode tube channel is close to the same, reducing the problem of reduced efficiency caused by the high flow rate in some channels, which causes the dust to not have time to be charged or to move to the surface of the plate and be carried out of the electric field channel by the air flow, thereby ensuring the best gas distribution in the electric field and maximizing the flue gas purification efficiency.

[0026] (2) The spray device can continuously spray water mist, and its flow rate can be adjusted according to the amount of flue gas, so as to effectively reduce the resistivity of flue gas dust, increase the dust particle size, reduce the flue gas temperature, reduce the air ionization potential energy, and increase the electric field strength. It can capture dust particles through inertial collision, adsorption condensation, diffusion, etc., and improve the purification efficiency.

[0027] (3) The spray device periodically cleans the honeycomb anode tube and cathode wire, and its flow rate can be adjusted according to the dust accumulation of the anode tube and cathode wire; it extends the maintenance cycle, inhibits secondary dust in principle, effectively eliminates the back corona phenomenon, and improves the purification efficiency per unit area.

[0028] (4) The device provided by the present invention has the characteristics of suppressing secondary dust, good air distribution effect, high purification efficiency, long maintenance cycle and long equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0031] Figure 2 This is a schematic diagram of the structure of the adjustable air equalizing device of Example 1.

[0032] Figure 3 This is a top view of the air flow distribution plate of Example 1.

[0033] Figure 4 This is a schematic diagram of the structure of the adjustable air equalization device of Example 2.

[0034] Figure 5 This is a top view of the air flow distribution plate of Example 2.

[0035] In the figure, 1. shell, 2. adjustable air equalization device, 3. cathode wire, 4. honeycomb anode tube, 5. cathode suspension device, 6. cathode anti-sway device, 7. spray device, 8. sprinkler device, 9. insulation box, 10. sewage filter cover, 11. air inlet, 12. air outlet, 13. drain outlet, 14. upper head, 15. lower head, 21. air flow distribution plate, 22. wind blocking plate, 23. air equalization air hole, 24. air hole adjustment screw, 25. adjustment nut, 26. fire blocking plate. DETAILED DESCRIPTION

[0036] The present invention is described in detail below by specific examples, but the protection scope of the present invention is not limited. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can be obtained from commercial channels.

[0037] Example 1

[0038] A wet electrostatic precipitator with an adjustable air distribution device comprises an upper end cap 14, a shell 1 and a lower end cap 15, wherein the upper end cap 14 is arranged at the upper end of the shell 1, and the lower end cap 15 is arranged at the lower end of the shell 1; a honeycomb dust removal assembly and an adjustable air distribution device 2 are arranged inside the shell 1, a sewage filter cover 10 is arranged in the lower end cap 15, and the lower end of the sewage filter cover 10 is connected to a circulating water pipeline; a drain port 13 is arranged at the bottom of the shell 1; an air outlet 12 is arranged at the top of the shell 1, and an insulating box 9 is arranged outside the upper end cap 14;

[0039] The honeycomb dust removal assembly includes a cathode wire 3, a honeycomb anode tube 4, a cathode suspension device 5 and a cathode anti-sway device 6; each honeycomb anode tube 4 is provided with a cathode wire 3, the cathode suspension device 5 is arranged on the top of the honeycomb anode tube 4, and the cathode anti-sway device 6 is arranged on the bottom of the honeycomb anode tube 4; an air inlet 11 is provided on the lower side of the shell 1, and an adjustable air equalization device 2 is provided on the upper part of the air inlet 11.

[0040] The adjustable air balancing device 2 includes a fire blocking plate 26, an air flow distribution plate 21, an air blocking plate 22, an air balancing air hole 23, and an air hole adjustment rod. The adjustable air balancing device 2 has multiple groups of air balancing air holes 23, each of which corresponds to a honeycomb anode tube 4, and a fire blocking plate 26 is provided on the outside of the air balancing air hole 23; the air balancing air hole 23 and the air hole adjustment rod are connected through the air flow distribution plate 21, and two semicircular holes are opened on the air flow distribution plate 21 corresponding to each air balancing air hole 23, a crossbeam is provided in the middle of the semicircular holes, and a threaded hole for the air hole adjustment rod to pass through is provided in the center of the crossbeam.

[0041] The adjustable air equalization device 2 is provided with a spray device 7 on the upper part, which can adjust the pressure head and flow rate;

[0042] The honeycomb anode tube 4 is provided with a spray device 8 on the upper part thereof, which can adjust the pressure head and flow rate;

[0043] The adjustable air distribution device 2, the spray device 7, the honeycomb dust removal assembly, and the spray device 8 are sequentially arranged in the housing 1 along the airflow direction;

[0044] The pore adjustment rod includes a pore adjustment screw 24 and an adjustment nut 25; the pore adjustment screw 24 and the adjustment nut 25 are connected;

[0045] The air distribution hole 23 is cylindrical.

[0046] The spray device 7 adopts a hollow cone nozzle, and the spray device 8 adopts a solid cone nozzle.

[0047] The sewage filter cover 10 is double-layered and has a built-in high-efficiency filter cotton.

[0048] The cathode wire 3 is a belt-shaped spiral cathode wire made of duplex stainless steel.

[0049] The honeycomb anode tube 4 is made of stainless steel, and its inscribed circle diameter can be 400 mm and its length can be 6 m.

[0050] The insulating box 9 is provided with an insulating porcelain sleeve, on which there is a high voltage power lead-in terminal, which is connected to the cathode line 3 .

[0051] Threaded fitting devices are provided between the air baffle plate 22 and the air hole adjustment rod, and between the air hole adjustment rod and the air flow distribution plate 21, so that the height between the air baffle plate 22 and the air hole 23 can be adjusted at the lower side or the upper side of the air distribution device. The advantage of such a setting is that when the height adjustment is adopted, the air distribution device can be adjusted on both sides: when the distance between the air baffle plates is small and it is inconvenient for maintenance personnel to pass through, it can be adjusted in the maintenance passage at the lower side of the air distribution device; when there is sewage in the water collecting bucket and it is inconvenient for maintenance personnel to pass through, it can be adjusted in the maintenance passage at the upper side of the air distribution device; or when there are restrictions on the height of the equipment, the height of the maintenance passage on one side can be appropriately reduced, and a single-side adjustment method can be adopted. This adjustment method is more flexible, has higher adjustment accuracy, and has a better airflow distribution effect.

[0052] A purification process of a wet electrostatic precipitator with an adjustable air-equalizing device: the flue gas enters the wet electrostatic precipitator from the air inlet 11, is evenly distributed in each channel through the adjustable air-equalizing device 2, enters the honeycomb dust removal assembly through the spray device 7, and ionizes the gas around the cathode line 3 by using the strong field strength generated by high voltage electricity, generates a large number of ions that collide with dust or water mist to charge it, and the water mist combines with the dust, so that the specific resistance of the dust decreases and the particle size increases. Under the action of the DC high voltage, the water mist is charged and split and further atomized. The charged water mist captures dust particles through inertial collision, adsorption condensation, diffusion and the like. The dust particles reach the honeycomb anode tube 4 driven by the electric field force, and are discharged into the lower head 15 of the wet electrostatic precipitator along with the water film evenly distributed on the surface of the honeycomb anode tube 4. The sewage enters the circulating water pipeline after being purified by the sewage filter cover 10, and the clean flue gas is discharged through the air outlet 12;

[0053] By rotating the plurality of groups of cylindrical air balancing holes 23 and the corresponding air hole adjustment rods or air blocking plates 22 on the air flow distribution plate 21, the height between the air blocking plates 22 and the air flow distribution plate 21 is changed, so that the mean square deviation of the air flow velocity and resistance of each air balancing hole 23 is within the set value, so that the air flow velocity of each of the 4 channels of the honeycomb anode tube is nearly equal;

[0054] The spray device 8 located at the upper part of the honeycomb dust removal assembly periodically cleans the honeycomb anode tube 4 and the cathode line 3 , and its flow rate is adjusted according to the dust accumulation of the honeycomb anode tube 4 and the cathode line 3 .

[0055] Example 2

[0056] A wet electrostatic precipitator with an adjustable air distribution device comprises an upper end cap 14, a shell 1 and a lower end cap 15, wherein the upper end cap 14 is arranged at the upper end of the shell 1, and the lower end cap 15 is arranged at the lower end of the shell 1; a honeycomb dust removal assembly and an adjustable air distribution device 2 are arranged inside the shell 1, a sewage filter cover 10 is arranged in the lower end cap 15, and the lower end of the sewage filter cover 10 is connected to a circulating water pipeline; a drain port 13 is arranged at the bottom of the shell 1; an air outlet 12 is arranged at the top of the shell 1, and an insulating box 9 is arranged outside the upper end cap 14;

[0057] The honeycomb dust removal assembly includes a cathode wire 3, a honeycomb anode tube 4, a cathode suspension device 5 and a cathode anti-sway device 6; each honeycomb anode tube 4 is provided with a cathode wire 3, the cathode suspension device 5 is arranged on the top of the honeycomb anode tube 4, and the cathode anti-sway device 6 is arranged at the bottom of the honeycomb anode tube 4; an air inlet 11 is provided at the lower side of the shell 1, and an adjustable air balancing device 2 is provided on the upper part of the air inlet 11,

[0058] The adjustable air balancing device 2 comprises a fire blocker 26, an air flow distribution plate 21, an air blocker 22, an air balancing air hole 23, and an air hole adjustment rod. The adjustable air balancing device 2 has multiple groups of air balancing air holes 23, each of which corresponds to a honeycomb anode tube 4. An air hole adjustment rod is provided on the air flow distribution plate 21 at a distance of 10 to 150 mm from each air balancing air hole 23, and an air blocker 22 is provided on the gas adjustment rod. The advantage of such a setting is that when the angle is adjusted, an elliptical or ∞-shaped air blocker can be used and placed between two air balancing air holes to adjust the air flow rate of two adjacent air balancing air holes at the same time. This adjustment method is more convenient and simpler to operate.

[0059] The adjustable air equalization device 2 is provided with a spray device 7 on the upper part, which can adjust the pressure head and flow rate;

[0060] The honeycomb anode tube 4 is provided with a spray device 8 on the upper part thereof, which can adjust the pressure head and flow rate;

[0061] The adjustable air distribution device 2, the spray device 7, the honeycomb dust removal assembly, and the spray device 8 are sequentially arranged in the housing 1 along the airflow direction;

[0062] The pore adjustment rod comprises a pore adjustment screw 24 and an adjustment nut 25;

[0063] Furthermore, the air distribution hole 23 is cylindrical.

[0064] Furthermore, the spray device 7 adopts a hollow cone nozzle, and the spray device 8 adopts a solid cone nozzle.

[0065] Furthermore, the sewage filter cover 10 is double-layered and has built-in high-efficiency filter cotton.

[0066] The cathode wire 3 is a belt-shaped spiral cathode wire made of duplex stainless steel.

[0067] The honeycomb anode tube 4 is made of stainless steel, and its inscribed circle diameter can be 150 mm and its length can be 2 m.

[0068] The air hole adjustment rod is disposed on one side of the air blocking plate 22 , and can adjust the angle between the air blocking plate 22 and the air balancing air hole 23 .

[0069] A spray device is provided on the upper side of the adjustable air equalization device, which can continuously spray water mist, and its flow rate can be adjusted according to the amount of flue gas, so as to effectively reduce the flue gas dust resistivity, reduce the flue gas temperature, capture dust particles through inertial collision, adsorption condensation, diffusion and other effects, and improve the purification efficiency.

[0070] A spray device is provided on the upper side of the honeycomb anode tube, and its flow rate can be adjusted according to the dust accumulation of the honeycomb anode tube and cathode wire. The honeycomb anode tube and cathode wire are cleaned periodically to extend the maintenance cycle, inhibit secondary dust in principle, effectively eliminate the back corona phenomenon, and improve the purification efficiency per unit area.

[0071] Although the preferred embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments, which are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the present invention and the claims, such as changing the connection structure between the air baffle plate and the air flow distribution plate, changing the adjustment method of the air baffle plate such as angle adjustment, changing the shape of the body, changing the arrangement of the spray device and the spray device, or changing the number of honeycomb anode tubes, etc. Such changes all fall within the protection scope of the present invention. For ordinary technicians in this field, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the protection scope of the claims of the present invention.

Claims

1. A wet electrostatic precipitator with an adjustable air distribution device, characterized in that: The invention comprises an upper end cap (14), a shell (1) and a lower end cap (15), wherein the upper end cap (14) is arranged at the upper end of the shell (1), and the lower end cap (15) is arranged at the lower end of the shell (1); a honeycomb dust removal component and an adjustable air distribution device (2) are arranged inside the shell (1); a sewage filter cover (10) is arranged in the lower end cap (15), and the lower end of the sewage filter cover (10) is connected to a circulating water pipeline; a drain outlet (13) is arranged at the bottom of the shell (1); an air outlet (12) is arranged at the top of the shell (1), and an insulating box (9) is arranged outside the upper end cap (14); The honeycomb dust removal assembly comprises a cathode wire (3), a honeycomb anode tube (4), a cathode suspension device (5) and a cathode anti-sway device (6); each honeycomb anode tube (4) is provided with a cathode wire (3), the cathode suspension device (5) is provided at the top of the honeycomb anode tube (4), and the cathode anti-sway device (6) is provided at the bottom of the honeycomb anode tube (4); an air inlet (11) is provided at the lower side of the shell (1), and an adjustable air balancing device (2) is provided at the upper part of the air inlet (11); The adjustable air balancing device (2) comprises an air flow distribution plate (21), an air blocking plate (22), an air balancing air hole (23), a fire blocking plate (26), and an air hole adjustment rod. The adjustable air balancing device (2) has a plurality of groups of air balancing air holes (23), and a fire blocking plate (26) is arranged outside the air balancing air holes (23). Each air balancing air hole (23) corresponds to a honeycomb anode tube (4), and an air blocking plate (22) and an air hole adjustment rod are arranged on the upper part of the cylinder of the air balancing air hole (23). The adjustable air distribution device (2) is provided with a spray device (7) on its upper part; A spray device (8) is provided on the upper part of the honeycomb anode tube (4); The adjustable air distribution device (2), the spray device (7), the honeycomb dust removal assembly, and the spray device (8) are arranged in sequence along the airflow direction in the housing (1); The air flow distribution plate (21) is provided with two semicircular holes corresponding to each air distribution hole (23), a crossbeam is provided in the middle of the semicircular holes, and a threaded hole is provided in the center of the crossbeam for the air hole adjustment rod to pass through; A threaded fitting device is provided between the air blocking plate (22) and the air hole adjustment rod, and between the air hole adjustment rod and the air flow distribution plate (21), so that the height between the air blocking plate (22) and the air hole (23) can be adjusted at the lower side or the upper side of the adjustable air balancing device (2); An air hole adjustment rod is provided on the air flow distribution plate (21) at a distance of 10 to 150 mm from each air balancing air hole (23); the air hole adjustment rod is placed on one side of the air blocking plate (22) to adjust the angle between the air blocking plate (22) and the air balancing air hole (23).

2. A wet electrostatic precipitator with an adjustable air distribution device as claimed in claim 1, characterized in that: The air distribution hole (23) is cylindrical; the sewage filter cover (10) is double-layered and has built-in filter cotton.

3. A wet electrostatic precipitator with an adjustable air distribution device as claimed in claim 1, characterized in that: The pore adjustment rod comprises a pore adjustment screw (24) and an adjustment nut (25); the pore adjustment screw (24) and the adjustment nut (25) are connected; the spray device (7) is a hollow conical nozzle, and the shower device (8) is a solid conical nozzle.

4. A wet electrostatic precipitator with an adjustable air distribution device as claimed in claim 1, characterized in that: The cathode wire (3) is a ribbon-shaped spiral cathode wire made of duplex stainless steel.

5. A wet electrostatic precipitator with an adjustable air balancing device as claimed in claim 1, characterized in that: The insulating box (9) is equipped with an insulating porcelain sleeve, on which there is a high-voltage power lead-in terminal, which is connected to the cathode line (3).

6. A wet electrostatic precipitator with an adjustable air balancing device as claimed in claim 1, characterized in that: The honeycomb anode tube (4) is made of stainless steel, and has an inscribed circle diameter of 150-400 mm and a length of 2-6 m.

7. A purification method for a wet electrostatic precipitator with an adjustable air distribution device according to any one of claims 1 to 6, characterized in that: The flue gas enters the wet electrostatic precipitator from the air inlet (11), is evenly distributed in each channel through the adjustable air distribution device (2), and enters the honeycomb dust removal component through the spray device (7). The gas around the cathode line (3) is ionized by the strong field strength generated by the high voltage electricity, and a large number of ions are generated to collide with dust or water mist to charge it, and the water mist combines with the dust, so that the specific resistance of the dust decreases and the particle size increases. Under the action of the DC high voltage, the water mist is charged and split and further atomized. The charged water mist captures dust particles through inertial collision, adsorption condensation, diffusion and the like. The dust particles are driven by the electric field force to reach the honeycomb anode tube (4) and are discharged into the lower head (15) of the wet electrostatic precipitator along with the water film evenly distributed on the surface of the honeycomb anode tube (4). The sewage enters the circulating water pipeline after being purified by the sewage filter cover (10), and the clean flue gas is discharged through the air outlet (12); By rotating the plurality of groups of cylindrical air balancing holes (23) and the corresponding air hole adjustment rods or air blocking plates (22) on the air flow distribution plate (21), the height or angle between the air blocking plates (22) and the air flow distribution plate (21) is changed, so that the mean square deviation of the air flow velocity and resistance of each air balancing hole (23) is within a set value, so that the air flow velocity of each honeycomb anode tube (4) channel is nearly equal; The spray device 8 located at the upper part of the honeycomb dust removal assembly periodically cleans the honeycomb anode tube (4) and the cathode wire (3), and its flow rate is adjusted according to the dust accumulation of the honeycomb anode tube (4) and the cathode wire (3).

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