CN111589580A - A high-efficiency wet vibrating wire grid electrostatic precipitator - Google Patents

Abstract

The invention discloses a high-efficiency wet-type vibrating wire grid electrostatic precipitator, which belongs to the technical field of flue gas purification. A nozzle, the electric field dust collecting assembly includes a cathode wire and an anode plate. On the basis of the dust collecting electrode plate of the present invention, a metal vibrating wire grid is added inside or between the electric fields, and it is used as a dust collecting electrode, which increases the dust collecting surface area and exerts its even distribution effect on the airflow; When the string grid is installed, the acoustic agglomeration effect produced by the vibration of the metal wire is used to enhance the collision and agglomeration effect between the dust and the dust, and the dust and the mist particles, so as to realize further efficient dust removal; , to avoid secondary dust, the use of sewage filtration and recycling of the spray water source has the advantages of environmental protection and water saving, and is worthy of popularization and use.

Description

A high-efficiency wet vibrating wire grid electrostatic precipitator

technical field

The invention relates to the technical field of flue gas purification, in particular to a high-efficiency wet vibrating wire grid electric precipitator.

Background technique

With the improvement of national air pollution emission standards and workplace dust occupational hazard limit requirements, the purification requirements for particulate matter have also become higher, especially for the control of respiratory fine particulate matter, how to efficiently remove fine particulate matter is becoming more and more today. The hot issue of dust removal.

Electrostatic precipitator mainly uses the electrostatic force generated by the electric field to separate the dust from the air flow. It mainly goes through three stages of corona discharge, particle charging, and dust collection and cleaning. It has the characteristics of high dust removal efficiency, low resistance and low energy consumption. It is widely used in flue gas purification in coal-fired power plants, steel, building materials, industrial boilers and other industries. However, the purification effect of general electrostatic precipitators on fine particles is not ideal, which restricts the popularization and application of electrostatic precipitators to a certain extent. The dust removal mechanism of the wet vibrating wire grid is to use the dust-laden airflow to drive the grid wire to vibrate, and to use the acoustic cohesion effect generated by the vibration to enhance the collision and cohesion between dust and dust, dust and mist particles, so as to achieve the purpose of dust reduction, and to reduce respiratory dust. The dust removal efficiency can reach 80%-90%.

The existing wet vibrating wire grid dust collector has certain deficiencies in the use process. Therefore, a high-efficiency wet vibrating wire grid electrostatic precipitator is proposed.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: how to solve it and provide a high-efficiency wet vibrating wire grid electrostatic precipitator.

The present invention solves the above technical problems through the following technical solutions. The present invention includes a box body, a spray assembly, an electric field dust collecting assembly, and at least one metal vibrating wire grid. The spray assembly includes a plurality of nozzles, and the electric field dust collecting assembly includes multiple nozzles. The assembly includes a cathode line and an anode plate, and the number of the cathode line and the anode plate is at least one. After the power is turned on, the cathode line and the anode plate form at least one electric field in the box, and the cathode line and the anode plate form at least one electric field through the cathode line. Charge the fine particles in the airflow, and initially collect the charged fine particles through the anode plate. The metal vibrating wire grid is arranged inside the box, inside the electric field or two adjacent places. Between the electric fields, the nozzle is arranged on the box, and the metal vibrating wire grid and the electric field dust collecting assembly are sprayed through the nozzle.

Further, the high-efficiency wet vibrating wire grid electrostatic precipitator further includes an ash hopper water tank, the ash hopper water tank is arranged at the lower part of the box body, and the nozzle is communicated with the ash hopper water tank.

Further, the spray assembly also includes a water supply pipe, a control valve, and a water pump, the water pump and the control valve are arranged on the water supply pipe, and the nozzle communicates with the ash hopper water tank through the water supply pipe .

Further, the spray assembly also includes a sewage filter screen, the ash hopper water tank is provided with a sewage outlet, the sewage outlet is arranged on one side of the ash hopper water tank, and the sewage filter screen is arranged on the ash hopper water tank. On the other side of the bucket water tank, the water inlet end of the water supply pipe is located on the filtered side of the ash bucket water tank.

Further, the electrostatic precipitator further comprises an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged on both sides of the box body.

Further, the electrostatic precipitator further includes an air distribution plate, and the number of the air distribution plates is two, which are respectively arranged at the rear of the air inlet and the front of the air outlet.

Further, the cathode line connected to the negative voltage is the negative electrode, the anode plate is grounded as the positive electrode, and the metal vibrating wire grid is grounded as the positive electrode.

Further, the electrostatic precipitator further includes an insulating support, and when the metal vibrating wire grid is located between two adjacent electric fields, the metal vibrating wire grid is connected to the box body through the insulating support, The metal vibrating wire grid is perpendicular to the plane where the anode plate is located.

Further, when the metal vibrating wire grid is located inside the electric field, the metal vibrating wire grid is directly connected to the anode plate, and the metal vibrating wire grid is perpendicular to the anode plate.

Further, the metal vibrating wire grid includes a frame and a plurality of metal wires, and the plurality of the metal wires are arranged side by side inside the frame at equal intervals.

Compared with the prior art, the present invention has the following advantages: in the high-efficiency wet vibrating wire grid electrostatic precipitator, a metal vibrating wire grid is added inside the electric field or between the electric fields on the basis of the dust collecting electrode plate, which is used as the dust collecting electrode to increase the dust collecting electrode. Moreover, when the airflow passes through the vibrating wire grid, the acoustic agglomeration effect generated by the vibration of the metal wire is used to enhance the collision and agglomeration effect between dust and dust, dust and mist particles, and achieve further High-efficiency dust removal; in addition, in the present invention, the dust collecting pole is cleaned by the spray assembly to avoid secondary dust.

Description of drawings

Fig. 1 is the structural representation of the high-efficiency wet vibrating wire grid electrostatic precipitator in the second embodiment of the present invention;

Fig. 2 is the structural representation of the high-efficiency wet vibrating wire grid electrostatic precipitator in the second embodiment of the present invention;

3a is a schematic diagram of the first state in which the metal vibrating wire grid is installed inside the electric field in the second embodiment of the present invention;

3b is a schematic diagram of the second state in which the metal vibrating wire grid is installed inside the electric field in the second embodiment of the present invention;

3c is a schematic diagram of a metal vibrating wire grid installed between adjacent electric fields in the second embodiment of the present invention;

4 is a schematic structural diagram of a metal vibrating wire grid in Embodiment 2 of the present invention;

5a is a schematic diagram of the linear arrangement shape of the metal wires in the second embodiment of the present invention;

Fig. 5b is a schematic diagram of the zigzag arrangement shape of the metal wires in the second embodiment of the present invention;

Figure 5c is a schematic diagram of the arc-shaped arrangement of the metal wires in the second embodiment of the present invention;

FIG. 5d is a schematic diagram of the wavy arrangement shape of the metal wires in the second embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following implementation. example.

This embodiment provides a technical solution: a high-efficiency wet vibrating wire grid electrostatic precipitator, comprising a box body, a spray assembly, an electric field dust collecting assembly, and at least one metal vibrating wire grid, and the spray assembly includes a plurality of nozzles, The electric field dust collecting assembly includes a cathode line and an anode plate, and the number of the cathode line and the anode plate is at least one. After the power is turned on, the cathode line and the anode plate form at least one electric field in the box. The fine particles in the airflow are charged through the cathode line, the charged fine particles are initially collected by the anode plate, and the metal vibrating wire grid is arranged inside the box, inside the electric field or Between two adjacent electric fields, the nozzle is arranged on the box, and the metal vibrating wire grid and the electric field dust collecting assembly are sprayed through the nozzle.

The high-efficiency wet vibrating wire grid electrostatic precipitator further includes an ash hopper water tank, the ash hopper water tank is arranged at the lower part of the box body, and the nozzle is communicated with the ash hopper water tank.

The spray assembly further includes a water supply pipe, a control valve and a water pump, the water pump and the control valve are arranged on the water supply pipe, and the nozzle communicates with the ash hopper water tank through the water supply pipe.

The spray assembly also includes a sewage filter screen, the ash hopper water tank is provided with a sewage outlet, the sewage outlet is arranged on one side of the ash hopper water tank, and the sewage filter screen is arranged on the other side of the ash hopper water tank. The water inlet end of the water supply pipe is located on the filtered side of the ash bucket water tank.

The electrostatic precipitator further comprises an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged on both sides of the box body.

The electrostatic precipitator further includes an air distribution plate, and the number of the air distribution plate is two, which are respectively arranged at the rear of the air inlet and the front of the air outlet.

The cathode line connected to a negative voltage is a negative electrode, the anode plate is grounded as a positive electrode, and the metal vibrating wire grid is grounded as a positive electrode.

The electrostatic precipitator further includes an insulating support. When the metal vibrating wire grid is located between two adjacent electric fields, the metal vibrating wire grid is connected to the box body through the insulating support, and the metal vibrating wire grid is connected to the box body through the insulating support. The string grid is perpendicular to the plane where the anode plate is located.

When the metal vibrating wire grid is located inside the electric field, the metal vibrating wire grid is directly connected to the anode plate, and the metal vibrating wire grid is perpendicular to the anode plate.

The metal vibrating wire grid includes a frame and a plurality of metal wires, and the plurality of the metal wires are arranged side by side inside the frame at equal intervals.

Embodiment 2

As shown in Figures 1 and 2, Figure 1 is a schematic structural diagram of a high-efficiency wet vibrating wire grid electrostatic precipitator, and Figure 2 is a cross-sectional view at A-A on Figure 1; the high-efficiency wet vibrating wire grid electrostatic precipitator in this embodiment includes: Air inlet 1, air distribution plate 2, multiple cathode lines 3, multiple anode plates 4 (ie, dust collector plates), at least one metal vibrating wire grid 5, insulating support 6, box 7, airflow outlet 8, sewage The mouth 9, the fixing frame 10, the ash bucket water tank 11 and the spray assembly.

Preferably, in this embodiment, the electrostatic precipitator is arranged horizontally and horizontally, and a plurality of electric fields can be connected in series in the electrostatic precipitator. The air inlet 1 and the air outlet 8 are respectively arranged on both sides of the box body 7 . The number of the air distribution plates 2 is two groups, which are respectively arranged in the corresponding positions of the box body 7 near the air inlet 1 and the air outlet 8, so as to play the role of uniform air distribution.

Preferably, the spray assembly includes a plurality of nozzles 121, a water supply pipe 122, a control valve 123, a water pump 124, and a sewage filter 125, wherein the plurality of nozzles 121 are installed on the top of the electric field and are connected to the water pump 124 through the water supply pipe 122, The anode plate 4 and the metal vibrating wire grid 5 are sprayed by using the spray assembly to avoid secondary dust. The water source for spraying adopts sewage filtration and recycling, which has the advantages of environmental protection and water saving.

Preferably, the sewage outlet 9 is located on one side of the bottom of the ash hopper water tank 11, and a sewage filter screen 125 is installed on the other side of the ash hopper water tank 11, so that sewage purification and reuse can be realized. The water end communicates with the filtered side of the ash hopper water tank 11 , and is used to pump the filtered sewage into the nozzle 121 for spraying.

As shown in FIG. 3 , the metal vibrating wire grid 5 is connected to the positive electrode (the ground is the positive electrode), and the metal vibrating wire grid 5 is installed inside each electric field or between each electric field. When the metal vibrating wire grid 5 is installed in the When it is between the cathode lines 3 in the electric field, it is directly fixed on the anode plate 4 and is vertically arranged with the anode plate 4; when the metal vibrating wire grid 5 is installed between the electric fields, it passes through the insulating support 6 It is fixed on the inner wall of the box body 7 .

As shown in FIG. 4 , the metal vibrating wire grid 5 includes a frame 51 and a plurality of metal wires 52. The metal vibrating wire grid 5 is evenly installed in the frame 51 by a plurality of metal wires 52 at equal intervals and in the same direction. The metal wires 52 do not cross each other, and the diameter of the metal wires 52 and the distance between the metal wires 52 can be adjusted according to the dust removal efficiency and the resistance of the dust collector. Reducing the diameter and spacing of the metal wires 52 helps to improve the dust removal efficiency; increasing the diameter and spacing of the metal wires 52 helps to reduce the internal resistance of the dust collector. On the basis of the dust collecting electrode plate, a metal vibrating wire grid 5 is added inside or between the electric fields, which will serve as an additional dust collecting electrode, increase the dust collecting surface area, and at the same time play its role in the uniform distribution of the airflow.

As shown in FIG. 5 , the arrangement shapes of the metal wires 52 in the metal vibrating wire grid 5 include straight lines ( FIG. 5 a ), broken lines ( FIG. 5 b ), arc shapes ( FIG. 5 c ), and wave shapes ( FIG. 5 b ). A single row of metal wires 52 may be arranged in the metal vibrating wire grid 5, or multiple rows of metal wires 52 may be arranged. The metal wires 52 are distributed vertically, so that the particles can be easily separated from the metal wires 52 under the action of the spray.

Working principle: The dust-laden airflow enters the dust collector from the airflow inlet 1, passes through the electric field corona zone, the particles are charged by ions, and some particles move to the anode plate 4 under the action of the electric field and are collected; the airflow passes through the metal vibrating wire grid 5 When the metal vibrating wire grid 5 is connected to the positive electrode, the particles are further captured by the metal wire 52, and when the air flow passes through the vibrating wire grid 5, the metal wire 52 vibrates (the "vibration" here is the dust-laden gas in the spraying The acoustic agglomeration effect formed under the action of the dust collector enhances the collision and agglomeration effect between dust and dust, dust and mist particles, and realizes further efficient dust removal; in addition, the anode plate 4 and the metal vibrating wire grid 5 are cleaned by the spray component , to avoid secondary dust, and the use of sewage filtration and recycling of the spray water source has the advantages of environmental protection and water saving.

It should be noted that the spray components and the dust removal system are operated synchronously, because the spray droplets generated by the spray help the collision and agglomeration between the dust and the droplets, and the spray also plays a role in cleaning the dust during the operation of the equipment. .

To sum up, for the above two groups of high-efficiency wet vibrating wire grid electrostatic precipitators, on the basis of the dust collection plate, a metal vibrating wire grid is added inside or between the electric fields, and it is used as a dust collection electrode to increase the dust collection surface area. Moreover, when the airflow passes through the vibrating wire grid, the acoustic agglomeration effect produced by the vibration of the metal wire is used to enhance the collision and agglomeration effect between dust and dust, dust and mist particles, and achieve further efficient dust removal; In addition, in the present invention, the dust collecting pole is cleaned by the spray assembly to avoid secondary dusting, and the water source for spraying adopts sewage filtration and recycling, which has the advantages of environmental protection and water saving, and is worthy of popularization and use.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A high-efficiency wet vibrating wire grid electrostatic precipitator is characterized in that: comprising a box, a spray assembly, an electric field dust collecting assembly, and at least one metal vibrating wire grid, the spray assembly includes a plurality of nozzles, and the electric field The dust collecting assembly includes a cathode line and an anode plate. After the power is turned on, the cathode line and the anode plate form at least one electric field in the box, and the fine particles in the airflow are charged through the cathode line, and the anode plate is Preliminarily collecting the charged fine particles, the metal vibrating wire grid is arranged inside the box, inside the electric field or between two adjacent electric fields, and the nozzle is arranged in the box On the above, the metal vibrating wire grid and the electric field dust collecting assembly are sprayed through the nozzle. 2 . The high-efficiency wet vibrating wire grid electrostatic precipitator according to claim 1 , wherein the high-efficiency wet vibrating wire grid electrostatic precipitator further comprises an ash hopper water tank, and the ash hopper water tank is arranged in the box. 3 . In the lower part of the body, the nozzle communicates with the ash hopper water tank. 3. A high-efficiency wet vibrating wire grid electrostatic precipitator according to claim 2, wherein the spray assembly further comprises a water supply pipe, a control valve, and a water pump, and the water pump and the control valve are arranged at the On the water supply pipe, the nozzle communicates with the ash hopper water tank through the water supply pipe. 4 . The high-efficiency wet vibrating wire grid electrostatic precipitator according to claim 3 , wherein the spray assembly further comprises a sewage filter screen, the ash hopper water tank is provided with a sewage outlet, and the sewage outlet The sewage filter is arranged on one side of the ash hopper water tank, the sewage filter screen is arranged on the other side of the ash hopper water tank, and the water inlet end of the water supply pipe is located on the filtered side of the ash hopper water tank. 5. A high-efficiency wet vibrating wire grid electrostatic precipitator according to claim 1, characterized in that: the electrostatic precipitator further comprises an airflow inlet and an airflow outlet, and the airflow inlet and the airflow outlet are respectively arranged in the on both sides of the box. 6 . The high-efficiency wet-type vibrating wire grid electrostatic precipitator according to claim 5 , wherein the electrostatic precipitator further comprises an airflow uniform distribution plate, and the number of the airflow uniform distribution plates is two, which are set respectively. 7 . at the rear of the air inlet and the front of the air outlet. 7. A high-efficiency wet-type vibrating wire grid electrostatic precipitator according to claim 1, characterized in that: the negative voltage of the cathode line is a negative electrode, the grounding of the anode plate is a positive electrode, and the grounding of the metal vibrating wire grid is a positive electrode. 8 . The high-efficiency wet-type vibrating wire grid electrostatic precipitator according to claim 1 , wherein the electrostatic precipitator further comprises an insulating support, and the metal vibrating wire grid is located between two adjacent electric fields. 9 . In time, the metal vibrating wire grid is connected to the box body through the insulating support. 9 . The high-efficiency wet vibrating wire grid electrostatic precipitator according to claim 1 , wherein when the metal vibrating wire grid is located inside the electric field, the metal vibrating wire grid is directly connected to the anode plate. 10 . connected, the metal vibrating wire grid is perpendicular to the anode plate. 10. A high-efficiency wet-type vibrating wire grid electrostatic precipitator according to claim 1, wherein the metal vibrating wire grid comprises a frame and a plurality of metal wires, and a plurality of the metal wires are arranged side by side at equal intervals in the inside the framework.

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