A wet electrostatic precipitator with high efficiency in dust removal

Abstract

The utility model provides a wet electrostatic precipitator with high dust removal efficiency, including a wet electrostatic precipitator body, a ventilation duct and a spray assembly, the ventilation duct including an air inlet and an air outlet, two groups of spray assemblies are arranged below the ventilation duct, and a wet electrostatic precipitator structure for adsorption and dust removal is arranged below each spray assembly, wherein the wet electrostatic precipitator structure located below the air inlet is used to receive the dust-containing gas moving from the air inlet to the separation box from top to bottom. The utility model can bring users a higher dust removal effect and stable dust removal efficiency, with high operating efficiency, an effective purification rate of more than 99%, low pressure loss, and no secondary dust; at the same time, the vertical flow design is matched with a two-way flow channel, with a compact structure and a small footprint.

Description

Technical Field

[0001] The utility model belongs to the technical field of wet electric precipitators, and in particular relates to a wet electric precipitator with high-efficiency dust removal. Background Art

[0002] Wet electrostatic precipitator, also known as wet type electrostatic precipitator, is a high-voltage electrostatic dust removal equipment used to treat humid gases. It is mainly used to remove dust, acid mist, water droplets, aerosols, odors, PM2.5 and other harmful substances in humid gases. It is an ideal equipment for controlling atmospheric dust pollution.

[0003] Wet electrostatic precipitators are divided into horizontal and vertical types. Since the working efficiency of vertical wet electrostatic precipitators is higher than that of horizontal wet electrostatic precipitators, vertical wet electrostatic precipitators are one of the common devices in dust removal systems. However, in the prior art, only one adsorption channel is arranged inside the wet electrostatic precipitator. The gas enters from the air inlet, passes through the adsorption channel, and is then directly discharged through the air outlet. As a result, the discharged gas still carries some unabsorbed dust, and multiple dust removal processes are required to meet the needs of users. The dust removal effect is poor and resources are seriously wasted. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a wet electrostatic precipitator with high dust removal efficiency.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A wet electrostatic precipitator with high efficiency in dust removal, a wet electrostatic precipitator with high efficiency in dust removal, comprising a wet electrostatic precipitator body, a ventilation duct and a spray assembly, the ventilation duct comprising an air inlet and an air outlet, two groups of spray assemblies being arranged below the ventilation duct, a wet electrostatic precipitator structure for adsorption and dust removal being arranged below each spray assembly, wherein the wet electrostatic precipitator structure located below the air inlet is used for receiving dust-laden gas moving from the air inlet to a separation box from top to bottom, and the other wet electrostatic precipitator structure is used for receiving dust-laden gas moving from the separation box to the air outlet from bottom to top; the lower ends of the two groups of wet electrostatic precipitator structures are connected to a separation box together, and a water outlet in a closed shape is arranged at the lower end of the separation box.

[0007] The wet electrostatic precipitator structure comprises a plurality of anode tubes grounded by wires and a cathode passing through each anode tube.

[0008] The wet electrostatic precipitator structure comprises a plurality of anode plates grounded by wires and cathodes passing through cavities of two oppositely arranged anode plates.

[0009] The cathode is arranged in a straight line or a curved shape inside the anode tube, and the cathode does not contact the inside of the anode tube. When the device is powered on, an induced electric field occurs in the anode tube, so that the surface of the dust-containing gas entering the anode tube is charged.

[0010] A part of the anode tube is arranged in a separation box, which has a cavity and a certain depth. The outlet end of the separation box is connected to the inlet end of the water tank. The outlet end of the water tank is equipped with an electromagnetic valve for controlling the drainage state of the water tank.

[0011] The cathode is supported on a porcelain high-voltage insulator and connected to a high-voltage power supply. The porcelain high-voltage insulator is insulating ceramic.

[0012] The spray assembly comprises a water supply pipe spanning over the wet electrostatic precipitator structure and a plurality of atomizing nozzles installed on the water supply pipe. One end of the water supply pipe is connected to an external water supply pipe through an electromagnetic valve.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model adopts a vertical structure, which occupies a small area. At the same time, a double pipeline is arranged in the device. After the gas after the first filtration passes through the separation box to achieve simple gas-liquid separation, the gas moving upward is dust-removed again, which fundamentally improves the dust removal efficiency.

[0015] 2. The overall connection degree of the device is high. The setting of the anode structure and the cathode generates an induced electric field in the device. The induced electric field charges the dust. The charged dust can be adsorbed on the anode structure, and then lose electricity after the anode structure conducts electricity, so that it can be cleaned by the water sent by the upper spray system to achieve the dust removal effect.

[0016] 3. In order to improve the wastewater utilization rate of the device, a water tank can be connected to the lower end of the separation box of the device. After the water tank collects the water discharged from the device, it can be discharged or treated in a centralized manner. The treated water flow can be circulated and applied to the spray system in the device to achieve resource affinity.

[0017] 4. The utility model can bring higher dust removal effect and stable dust removal efficiency to users, with high operating efficiency, effective purification rate of more than 99%, small pressure loss and no secondary dust; at the same time, the vertical flow design is matched with a two-way flow channel, with a compact structure and a small footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection structure of the insulating ceramic and the cathode of the utility model.

[0020] In the figure:

[0021] 1. Air inlet; 2. Inspection door; 3. First installation cavity; 4. Spray assembly; 5. Anode tube; 6. Cathode; 7. Separation box; 71. Drain outlet; 72. Drain pipe; 8. Water tank; 9. Second installation cavity; 10. Air outlet; 11. Ventilation duct; 12. Insulating ceramics. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] As attached Figure 1 As shown, the wet electrostatic precipitator to be protected by the utility model comprises a precipitator body, a ventilation duct 11 for gas to pass through, and an adsorption dust removal structure arranged in the precipitator body for treating the dust-containing gas, wherein the ventilation duct 11 comprises an air inlet 1 for feeding the dust-containing gas into the precipitator body and an air outlet 10 for discharging the dust-removed gas.

[0024] The dust collector body is vertical, and the air inlet 1 is located at the top of the dust collector body and is open. A hollow box body is arranged at the lower end of the air inlet 1, and a partition divides the cavity in the box body into a first installation cavity 3 and a second installation cavity 9. Spray assemblies 4 are respectively installed in the first installation cavity 3 and the second installation cavity 9. Two sets of independent adsorption dust removal structures are arranged opposite to each other at the lower end of the spray assembly 4. The dust-containing gas enters from the inside of the air inlet 1, is adsorbed by the adsorption dust removal structure opposite to the spray assembly 4 in the first installation cavity 3 and is cleaned by the spray assembly 4 installed in the first installation cavity 3, and then enters the adsorption dust removal structure opposite to the spray assembly 4 in the second installation cavity 9 again and is cleaned by the spray assembly 4 installed in the second installation cavity 9 before being discharged from the air outlet 10.

[0025] Combination Figure 2The above-mentioned adsorption dust removal structure includes an anode tube 5 and a cathode 6 which are grounded through a wire. The cathode 6 passes through the anode tube 5. The cathode 6 is supported by a porcelain high-voltage insulator and connected to a high-voltage power supply. After the device is powered on, the cathode 6 releases high voltage electricity to form an induced electric field in the anode tube 5. At this time, the dust-containing gas entering from the air inlet 1 moves downward and contacts the induced electric field in the anode tube 5, so that the dust is negatively charged and moves toward the inner wall of the anode tube 5 under the action of the electric field force, and finally the dust is adsorbed on the inner wall of the anode tube 5. On the wall, at this time, the anode tube 5 conducts away the electricity carried by the dust, and the spray assembly 4 sends water into the anode tube 5. The dust that has lost electricity is no longer adsorbed by the anode tube 5, and is flushed out of the anode tube 5 by the water. At this time, the dust-containing gas that has been dust-removed once moves upward, and the dust-containing water flow moves downward into the separation box 7. The dust-containing gas moving upward enters the adsorption dust removal structure under the second installation cavity 9. After being dust-removed again, the gas is discharged through the air outlet 10, and the discharged dust-containing water flow enters the separation box 7 and is discharged outside the device.

[0026] The above-mentioned porcelain high-voltage insulator can be insulating ceramic 12.

[0027] In order to ensure that the gas in the separation box 7 can be smoothly separated from the dust-containing water flow, the separation box 7 should have a certain depth. At the same time, in order to prevent a large amount of gas from being discharged through the outlet of the separation box 7, the outlet of the separation box 7 should be closed.

[0028] A water tank 8 can be set at the bottom of the separation box 7 to collect waste water. Therefore, there should be at least one drain pipe 72 at the bottom of the separation box 7 to discharge the dust-containing water flow. In order to improve the drainage efficiency of the device, a sewage pipe 71 can be set. The water collected in the water tank 8 can be connected to an external sewage treatment equipment for centralized treatment. The treated water can be recycled and used for cleaning inside the wet electrostatic precipitator, thereby realizing resource saving.

[0029] In order to ensure the water discharge efficiency of the separation box 7 installed in the device, support legs are provided at the bottom of the device for contacting the ground and supporting the equipment. In order to improve the stability of the support legs, the optimal number of support legs is four, and the support legs separate the bottom surface of the device from the ground.

[0030] Since the device needs regular inspection or maintenance, an inspection door 2 needs to be reserved on the surface of the device to facilitate subsequent repair and maintenance by staff.

[0031] At the same time, the control system of this device is composed of a pulse controller, a differential pressure switch, a differential pressure gauge, an electromagnetic pulse valve, a high-voltage rectifier, an ammeter, etc. The specific connection method adopts the connection method known to technicians in this technical field, and the model is selected from the models in the known field, which will not be summarized here.

[0032] In another embodiment, the anode tube 5 can be replaced with an anode plate and fitted on the inner wall of the device. The cathode 6 passes through the anode plate, and the induced electric field occurs in the anode plate. At this time, the water flow rate is greater, and a greater single adsorption rate can be obtained. The rest is the same as the above embodiment.

[0033] In another embodiment, the cathode 6 is arranged in a bent shape inside the anode tube 5 or the anode plate, and an induced electric field occurs inside the anode tube or the anode plate. At this time, the dust in the water flow can be better charged, which is more conducive to the adsorption of the anode tube 5.

[0034] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A wet electrostatic precipitator with high dust removal efficiency, comprising a wet electrostatic precipitator body, a ventilation duct (11) and a spray assembly (4), wherein the ventilation duct (11) comprises an air inlet (1) and an air outlet (10), characterized in that: Two groups of spray assemblies (4) are arranged below the ventilation duct (11), and a wet electrostatic precipitator structure for adsorbing and removing dust is arranged below each spray assembly (4), wherein the wet electrostatic precipitator structure located below the air inlet (1) is used to receive dust-containing gas moving from the air inlet (1) to the separation box (7) from top to bottom, and the other wet electrostatic precipitator structure is used to receive dust-containing gas moving from the separation box (7) to the air outlet (10) from bottom to top; the lower ends of the two groups of wet electrostatic precipitator structures are connected to a separation box (7), and the lower end of the separation box (7) is provided with a closed water outlet.

2. The wet electrostatic precipitator for high-efficiency dust removal according to claim 1, characterized in that: The wet electrostatic precipitator structure comprises a plurality of anode tubes (5) grounded by wires and a cathode (6) passing through each anode tube (5).

3. The wet electrostatic precipitator for high-efficiency dust removal according to claim 1, characterized in that: The wet electrostatic precipitator structure comprises a plurality of anode plates grounded by wires and a cathode (6) passing through the cavities of two oppositely arranged anode plates.

4. The wet electrostatic precipitator for efficient dust removal according to any one of claims 2 or 3, characterized in that: The cathode (6) is arranged in a straight line or a bent shape.

5. The wet electrostatic precipitator for high-efficiency dust removal according to claim 4, characterized in that: The cathode (6) is supported on a porcelain high voltage insulator and connected to a high voltage power source.

6. The wet electrostatic precipitator for high-efficiency dust removal according to claim 5, characterized in that: The porcelain high voltage insulator is insulating ceramic (12).

7. The wet electrostatic precipitator for efficient dust removal according to claim 1, characterized in that: A portion of the anode tube (5) is arranged in a separation box (7), the separation box (7) has a cavity therein, and the separation box (7) has a depth.

8. The wet electrostatic precipitator for high-efficiency dust removal according to claim 7, characterized in that: The water outlet end of the separation box (7) is connected to the water inlet end of the water tank (8), and the water outlet end of the water tank (8) is equipped with an electromagnetic valve for controlling the drainage state of the water tank (8).

9. The wet electrostatic precipitator for high-efficiency dust removal according to claim 1, characterized in that: The spray assembly (4) comprises a water supply pipe spanning above the wet electrostatic precipitator structure and a plurality of atomizing nozzles installed on the water supply pipe. One end of the water supply pipe is connected to an external water supply pipe via an electromagnetic valve.

10. The wet electrostatic precipitator for high-efficiency dust removal according to claim 9, characterized in that: One group of spray assemblies (4) is installed in the first installation cavity (3), and another group of spray assemblies (4) is installed in the second installation cavity (9).

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