CN112588442A - Electrostatic dust removal device of thermal power plant - Google Patents

Abstract

The invention discloses an electrostatic dust removal device for a thermal power plant, which belongs to the technical field of the thermal power plant and comprises a box body, a negative plate, an anode plate, a heat collecting pipe, a conductive coil and a replacement component, wherein the negative plate and the anode plate are fixed inside the box body; the device reduces the flue gas temperature, improves the dust collection efficiency of the electrostatic dust collector, enables the electrostatic dust collector to operate more efficiently and reasonably, reduces the smoke emission, and effectively improves the air quality.

Description

Electrostatic dust removal device of thermal power plant

Technical Field

The invention belongs to the technical field of thermal power plants, and particularly relates to an electrostatic dust removal device for a thermal power plant.

Background

At present, the temperature of boiler exhaust gas of a thermal power plant is generally between 125 ℃ and 135 ℃, and the flue gas enters an electrostatic dust collector and a desulfurization absorption tower in sequence after being discharged from an air preheater of the boiler, and then is discharged into the atmosphere through a chimney. The specific resistance of the flue gas fly ash in the temperature range is high, the dust concentration of the flue gas is also high, and the flue gas is not beneficial to dust collection of an electrostatic dust collector.

The generated energy of the thermal power plant accounts for about 70% of the total generated energy. Many thermal power plant unit desulfurization systems are not provided with a gas-gas heat exchanger (GGH), the flue gas discharged by a chimney is saturated wet flue gas, the temperature is about 50 ℃, the flue gas discharged by a power plant chimney is white or even gray, the transparency is extremely poor, and white gypsum slurry drops frequently fall in the peripheral area of a power plant to cause serious pollution. The mechanical demister is often additionally arranged at the top of the desulfurizing tower in the prior art, certain removal effect is achieved on the carried gypsum, but the mechanical demister generally has hardening and blocking phenomena in long-time operation, and cannot stably operate for a long time, so that gypsum slurry droplets enter the atmosphere along with the emission of flue gas. In addition, the conventional electrostatic demister has the treatment speed of 0.8-1.2m/s, low gas treatment capacity and efficiency and large equipment volume, and is not suitable for being used in a flue gas deep purification system of a large-scale thermal power plant.

Disclosure of Invention

The invention aims to provide an electrostatic dust collector of a thermal power plant, which is used for reducing the temperature of flue gas, improving the dust collection efficiency of an electrostatic dust collector, enabling the electrostatic dust collector to run more efficiently and reasonably, reducing the emission of smoke dust and effectively improving the air quality.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electrostatic precipitator device of thermal power plant, this electrostatic precipitator device of thermal power plant includes box, negative plate, anode plate, heat collecting pipe, conductive coil, change the subassembly the box is inside fixed negative plate and anode plate, negative plate and anode plate are fixed respectively at box inner wall both ends, and the negative plate is cyclic annular setting, and the inside change subassembly of rotating the connection both ends about the box that is equipped with of negative plate, and the conductive coil is fixed both ends about the box is inside, and conductive coil external connection has energy converter, and energy converter keeps away from the conductive coil end and is connected to the heat collecting pipe, and the heat collecting pipe covers and sets up inside whole thermal power plant, and other regional.

Preferably, the length of the conductive coil is equal to the distance between the cathode plate and the anode plate, a metal rod is fixedly connected between the upper conductive coil and the lower conductive coil, and an insulating shell is fixed outside the metal rod.

Preferably, the antistatic layer adopts the coating of alkane sulfonate material, and every antistatic layer junction sets up insulating material layer.

Preferably, change the subassembly including rotating the dwang of connection between the both ends about the box, the outside sliding connection of dwang has an adsorption section of thick bamboo, and the through-hole of corresponding adsorption section of thick bamboo size is seted up to the bottom half, and the through-hole bottom is fixed with the joint spare, and the dwang upper end is fixed with the motor, and the motor is fixed at the box top.

Preferably, the joint spare is including fixing the joint piece in the bottom half, and joint piece both sides sliding connection has the joint board, and the joint board is close to joint piece outside end and is fixed with the spring, and the spring is kept away from joint board end and is fixed with the actuating lever, adsorb bobbin base portion department and seted up the draw-in groove.

Preferably, a plurality of grooves are formed in the circumferential direction of the adsorption cylinder, and the grooves are uniformly distributed on the adsorption cylinder.

Preferably, the cathode plate is provided with a plurality of empty grooves along the circumferential direction.

The invention has the beneficial effects that:

1. this electrostatic precipitator device of thermal power plant, it adsorbs a section of thick bamboo and can follow inside the joint piece gets into the box, and actuating lever on the accessible joint piece is dismantled simultaneously, simple structure, and the sedimentary dust clearance of being convenient for adsorb a section of thick bamboo improves electrostatic absorption effect.

2. This electrostatic precipitator device of thermal power plant all coats on other lateral walls in the box and has had antistatic material, prevents to bond the dust on the box inner wall, saves follow-up cleaning time, and insulating material is all fixed at antistatic material both ends simultaneously, does not influence the anode plate and discharges.

3. This electrostatic precipitator device of thermal power plant can collect the inside surplus heat of thermal power plant, carries out two conductive coil power supplies, forms the acceleration electric field of anion, and make full use of waste heat resource effectively improves dust collection efficiency simultaneously.

4. This electrostatic precipitator device of thermal power plant sets up a plurality of recesses on the absorption section of thick bamboo outer wall, fully adsorbs the dust, improves the dust and absorbs the volume of placing.

Drawings

FIG. 1 is a schematic structural diagram of an electrostatic dust collector for a thermal power plant according to the present invention;

in the figure: 1. a box body; 2. a cathode plate; 3. an anode plate; 4. a heat collecting pipe; 5. a conductive coil; 6. replacing the component; 7. an energy converter; 8. an antistatic layer; 9. a metal rod; 10. an insulating case; 11. a layer of insulating material; 12. rotating the rod; 13. an adsorption cylinder; 14. a through hole; 15. a motor; 16. a clamping block; 17. a clamping and connecting plate; 18. a spring; 19. a drive rod; 20. a card slot; 21. a groove; 22. and (4) emptying the groove.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

Referring to fig. 1, an electrostatic precipitator for a thermal power plant according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

This electrostatic precipitator device of thermal power plant includes box 1, negative plate 2, anode plate 3, heat collecting pipe 4, conductive coil 5, change subassembly 6, the box, 1 is inside fixed negative plate 2 and anode plate 3, negative plate 2 and anode plate 3 are fixed respectively at 1 inner wall both ends of box, negative plate 2 is cyclic annular setting, the inside change subassembly 6 that rotates the connection at both ends about box 1 that is equipped with of negative plate 2, conductive coil 5 is fixed at 1 inside upper and lower both ends of box, 5 external connection of conductive coil has energy converter 7, 5 end connections to heat collecting pipe 4 of conductive coil are kept away from to energy converter 7, heat collecting pipe 4 covers and sets up inside whole thermal power plant, other regional coatings in 1 inner wall of box have antistatic layer 8.

Specifically, the length of the conductive coil 5 is equal to the distance between the cathode plate 2 and the anode plate 3, a metal rod 9 is fixedly connected between the upper conductive coil 5 and the lower conductive coil 5, and aninsulating shell 10 is fixed outside the metal rod 9.

Specifically, the antistatic layers 8 are coated with an alkyl sulfonate material, and an insulating material layer 11 is arranged at the joint of each antistatic layer 8.

Specifically, change subassembly 6 and include that thedwang 12 of rotation connection between box 1 upper and lower both ends,dwang 12 outside sliding connection has an absorption section of thick bamboo 13, and the through-hole 14 of a corresponding absorption section of thick bamboo 13 size is seted up to box 1 bottom, and through-hole 14 bottom is fixed with the joint spare, and dwang 12 upper end is fixed with motor 15, and motor 15 is fixed at box 1 top, and absorption section of thick bamboo outer wall material is the ordinary polypropylene resin material of antistatic properties difference.

Specifically, the joint spare is including fixing the joint piece 16 in the 1 bottom of box, and 16 both sides sliding connection of joint piece has joint board 17, and joint board 17 is close to 16 external ends of joint piece and is fixed with spring 18, and spring 18 keeps away from 17 ends of joint board and is fixed with actuating lever 19, adsorb a 13 bottom departments of section of thick bamboo and seted up draw-in groove 20.

Specifically, a plurality of grooves 21 are formed in the circumferential direction of the adsorption cylinder 13, and the grooves 21 are uniformly distributed on the adsorption cylinder 13.

Specifically, the cathode plate 2 is provided with a plurality of empty slots 22 along the circumferential direction.

The working principle of the invention is as follows: when the adsorption device works, negative ions are emitted by the anode plate 3, dust in the adsorption box body 1 moves towards the cathode plate 2, the conductive coil 5 is electrified in the moving process, an accelerating electric field is formed through the metal rod 9, the internal negative ions move and accelerate and move towards the cathode plate 2, when the conductive coil moves to the cathode plate 2, the dust is deposited into a groove 21 in the adsorption cylinder 13 to be collected under the action of the adsorption cylinder 13, when the dust is seriously accumulated on the adsorption cylinder 13, the driving rod 19 is pulled to move outwards, the adsorption cylinder 13 falls down along the through hole 14 in the pulling process of the clamping plate 17, the adsorption cylinder 13 is cleaned, and when the adsorption cylinder 13 is installed, the clamping plate 17 is used for fixedly clamping and connecting the adsorption cylinder 13 under the action of the spring 18;

the electric quantity required by the conductive coil 5 is collected by the heat collecting pipe 4 to collect residual heat in the thermal power plant, and the residual heat is converted into electric energy through the energy converter 7 after heat collection to supply power.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The electrostatic dust removal device for the thermal power plant is characterized by comprising a box body (1), a cathode plate (2), an anode plate (3), a heat collecting pipe (4), a conductive coil (5) and a replacing component (6), wherein the cathode plate (2) and the anode plate (3) are fixed inside the box body (1), the cathode plate (2) and the anode plate (3) are respectively fixed at two ends of the inner wall of the box body (1), the cathode plate (2) is arranged in an annular shape, the replacing component (6) which is rotatably connected to the upper end and the lower end of the box body (1) is arranged inside the cathode plate (2), the conductive coil (5) is fixed at the upper end and the lower end inside the box body (1), the energy converter (7) is connected to the outside of the conductive coil (5), the end, far away from the conductive coil (5), of the energy converter (7) is, the other areas of the inner wall of the box body (1) are coated with antistatic layers (8).

2. The electrostatic precipitator for the thermal power plant according to claim 1, wherein the length of the conductive coil (5) is equal to the distance between the cathode plate (2) and the anode plate (3), a metal rod (9) is fixedly connected between the upper conductive coil and the lower conductive coil (5), and an insulating shell (10) is fixed outside the metal rod (9).

3. An electrostatic precipitator for a thermal power plant according to claim 1, characterized in that the antistatic layers (8) are coated with an alkyl sulfonate material, and an insulating material layer (11) is provided at the junction of each antistatic layer (8).

4. The electrostatic dust removal device for the thermal power plant according to claim 1, wherein the replacement assembly (6) comprises a rotating rod (12) rotatably connected between the upper end and the lower end of the box body (1), an adsorption cylinder (13) is slidably connected to the outside of the rotating rod (12), a through hole (14) corresponding to the size of the adsorption cylinder (13) is formed in the bottom of the box body (1), a clamping member is fixed to the bottom of the through hole (14), a motor (15) is fixed to the upper end of the rotating rod (12), and the motor (15) is fixed to the top of the box body (1).

5. The electrostatic dust removal device for the thermal power plant according to claim 4, wherein the clamping member comprises a clamping block (16) fixed at the bottom of the box body (1), clamping plates (17) are slidably connected to two sides of the clamping block (16), a spring (18) is fixed to the clamping plate (17) close to the outer end of the clamping block (16), a driving rod (19) is fixed to the spring (18) far away from the clamping plate (17), and a clamping groove (20) is formed in the bottom of the adsorption cylinder (13).

6. The electrostatic precipitator device of a thermal power plant according to claim 4, wherein a plurality of grooves (21) are formed in the circumferential direction of the adsorption cylinder (13), and the grooves (21) are uniformly distributed on the adsorption cylinder (13).

7. An electrostatic precipitator for a thermal power plant according to claim 1, characterized in that the cathode plate (2) is provided with a plurality of slots (22) in the circumferential direction.

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