Electric demister with double electric fields

Abstract

The utility model belongs to the technical field of demisting equipment, and particularly relates to an electric demister with double electric fields, which comprises a shell and two electric field devices, a flue gas outlet pipeline and a flue gas inlet pipeline are respectively arranged at the upper end and the lower end of the shell, a spraying water pipe and an insulating partition plate are arranged in the shell, a plurality of spraying heads are mounted on the spraying water pipe, and the insulating partition plate is arranged in the shell. The insulating partition plate is vertically arranged and located below the spraying water pipe, the insulating partition plate divides an inner cavity of the shell into a left cavity and a right cavity, the two electric field devices are fixedly arranged in the two cavities of the shell respectively, each electric field device comprises two electric field units, and each electric field unit comprises a cathode wire and an anode plate arranged around the cathode wire. According to the device, the electric demister is physically divided, and a cleaning program is optimized, so that the problem that the electric demister can be cleaned only after being offline is solved, local cleaning in the operation process of the electric demister is realized, the electric demister is ensured to be in a continuous working state, and the tail gas dust removal effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of demisting equipment, and in particular relates to an electric demisting device with double electric fields. Background Art

[0002] The electrostatic precipitator needs to be cleaned regularly to remove the materials attached to the anode plate of the electrostatic precipitator. If the electrostatic precipitator is not cleaned for a long time, the anode plate will discharge due to excessive accumulation of materials, affecting the normal operation of the equipment, the operating effect will be reduced, and the dust removal effect of the exhaust gas will be affected.

[0003] The existing electrostatic precipitator must be cleaned under offline conditions, that is, the power supply system of the electrostatic precipitator is temporarily shut down, and the electrostatic precipitator is in a power-off state. After ensuring that there is no electric field in the electrostatic precipitator, the materials attached to the anode plate in the electrostatic precipitator are rinsed with cleaning water. After the rinse is completed, the power supply to the electrostatic precipitator is restored and the electrostatic precipitator is put into operation.

[0004] Generally, there are four high-voltage control cabinets on the electrostatic precipitator. Each high-voltage control cabinet is responsible for controlling the current on and off of the cathode wire of an electric field. The cathode wire forms an electric field with the anode plate to achieve the purpose of removing particulate matter in the exhaust gas. However, the electrostatic precipitator needs to be powered off during cleaning. The disappearance of the electric field will not be able to remove particulate matter in the exhaust gas, resulting in the risk of excessive dust content in the exhaust gas. The traditional response is to install a two-stage electrostatic precipitator, which is cleaned alternately to ensure the exhaust gas dust removal effect. However, the two-stage electrostatic precipitator is large in size and has high investment costs. Therefore, how to achieve online cleaning of the electrostatic precipitator and ensure the exhaust gas dust removal effect is an urgent problem to be solved. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the utility model provides an electric demister with a dual electric field, comprising a shell and two electric field devices, the top of the shell is connected to a smoke outlet duct, the bottom of the shell is connected to a smoke inlet duct, a spray water pipe and an insulating partition are arranged inside the shell, the spray water pipe is arranged horizontally and located at the top of the shell, the spray water pipe is installed with a plurality of spray heads, the insulating partition is arranged vertically and located below the spray water pipe, the insulating partition divides the inner cavity of the shell into left and right chambers, the two electric field devices are respectively fixedly arranged in the two chambers of the shell, each electric field device comprises two electric field units, each electric field unit comprises a vertically arranged cathode wire, a weight is fixed to the bottom end of the cathode wire, and an anode plate is arranged parallel to the cathode wire.

[0006] Optionally, an air intake baffle is provided below the insulating baffle, and the bottom end of the air intake baffle is close to the smoke intake duct.

[0007] Optionally, the sprinkler water pipe is connected to an external water source through a water supply pipe.

[0008] Specifically, there are two spray water pipes, which are respectively arranged in the left and right chambers of the shell. The water supply pipeline includes a water supply main and two water supply branches connected to the water supply main. The two water supply branches are respectively connected to the two spray water pipes, and each water supply branch is provided with a secondary valve. The water supply main is provided with a water pump and a main valve.

[0009] Optionally, four high-voltage control cabinets are further arranged outside the shell, and the four high-voltage control cabinets respectively supply power to the four electric field units.

[0010] Specifically, four high-voltage control cabinets are arranged in groups of two, and are disposed on the left and right sides above the shell.

[0011] The utility model also includes other components that enable the electric demister with dual electric fields to be used normally, which are all conventional technical means in the art. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the art, such as high-voltage control cabinets, etc.

[0012] The working principle of the utility model is that when the electric precipitator is operating normally, the exhaust gas enters the shell through the smoke inlet duct at the bottom, and under the separation and diversion effect of the air inlet baffle, the exhaust gas enters the left and right chambers respectively. After the dust is removed by the electric field unit, the exhaust gas converges at the top of the shell and enters the subsequent treatment process through the smoke outlet duct.

[0013] When the electrostatic precipitator needs to be cleaned after being used for a period of time, the two high-voltage control cabinets on the left side above the shell can be closed first to cut off the power to the two electric field units in the left chamber of the shell, that is, only the anode plate in the left chamber of the shell is flushed, while the right chamber continues to operate normally to remove exhaust dust; after the left chamber is cleaned, the operation is resumed and the right chamber is flushed; when both the left and right chambers are cleaned, the electrostatic precipitator fully resumes normal operation.

[0014] The beneficial effect of the utility model is that by modifying the electrostatic precipitator, a large chamber is divided into two relatively independent chambers, and at the same time the cleaning procedure is optimized, changing the original shutdown of all four high-voltage control cabinets to shutting down two high-voltage control cabinets at a time, thereby realizing alternating cleaning of the two chambers of the electrostatic precipitator, achieving uninterrupted exhaust gas dust removal, avoiding the situation where the dust content of the exhaust gas exceeds the standard, and ensuring the exhaust gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2It is a structural schematic diagram of the water supply pipeline of the utility model.

[0018] In the figure: 1. Shell, 2. Smoke outlet duct, 3. Smoke inlet duct, 4. Sprinkler water pipe, 5. Insulating partition, 6. Sprinkler head, 7. Electric field unit, 8. Cathode wire, 9. Heavy hammer, 10. Anode plate, 11. Inlet partition, 12. Left chamber, 13. Right chamber, 14. Water supply main pipe, 15. Water supply branch pipe, 16. Auxiliary valve, 17. Water pump, 18. Main valve, 19. High-voltage control cabinet, 20. Water supply pipe. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.

[0020] Example

[0021] like Figure 1-2 As shown, an embodiment of the utility model provides an electric demister with a dual electric field, including a shell 1 and two electric field devices, the top of the shell 1 is connected to a smoke outlet duct 2, the bottom of the shell 1 is connected to a smoke inlet duct 3, a spray water pipe 4 and an insulating partition 5 are arranged inside the shell 1, the spray water pipe 4 is arranged horizontally and located at the top of the shell 1, the spray water pipe 4 is installed with a plurality of spray heads 6, the insulating partition 5 is arranged vertically and located below the spray water pipe 4, the insulating partition 5 divides the inner cavity of the shell 1 into left and right chambers, and the two chambers are divided into a left chamber 12 and a right chamber 13, the two electric field devices are respectively fixedly arranged in the two chambers of the shell 1, each electric field device includes two electric field units 7, each electric field unit 7 includes a vertically arranged cathode wire 8, a weight 9 is fixed to the bottom end of the cathode wire 8, and an anode plate 10 is arranged in parallel around the cathode wire 8.

[0022] In addition, an air intake baffle 11 is provided below the insulating baffle 5, and the bottom end of the air intake baffle 11 is close to the smoke intake pipe 3. The spray water pipe 4 is connected to the external water source through the water supply pipe 20. The number of the spray water pipes 4 is two, and they are respectively arranged in the left and right chambers of the shell 1. The water supply pipe 20 includes a water supply main pipe 14 and two water supply branches 15 connected to the water supply main pipe 14. The two water supply branches 15 are respectively connected to the two spray water pipes 4, and each water supply branch pipe 15 is provided with an auxiliary valve 16. The water supply main pipe 14 is provided with a water pump 17 and a main valve 18. Four high-voltage control cabinets 19 are also provided outside the shell 1. The four high-voltage control cabinets 19 are respectively powered by the four electric field units 7. The four high-voltage control cabinets 19 are arranged in groups of two, and are arranged on the left and right sides above the shell 1.

[0023] The working principle of the utility model is that when the electric precipitator is operating normally, the exhaust gas enters the shell 1 through the flue gas inlet pipe 3 at the bottom, and under the separation and diversion effect of the air inlet baffle 11, the exhaust gas enters the left and right chambers respectively. After the dust is removed by the electric field unit 7, the exhaust gas converges at the top of the shell 1 and enters the subsequent treatment process through the flue gas outlet pipe 2.

[0024] When the electrostatic precipitator needs to be cleaned after being used for a period of time, the two high-voltage control cabinets 19 on the upper left side of the shell 1 can be closed first, so that the two electric field units 7 in the left chamber 12 of the shell 1 are powered off, that is, only the anode plate 10 in the left chamber 12 of the shell 1 is flushed, while the right chamber 13 continues to operate normally to remove exhaust dust; after the left chamber 12 is cleaned, the operation is resumed and the right chamber 13 is flushed; when the left and right chambers are cleaned, the electrostatic precipitator fully resumes normal operation.

[0025] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An electric demister with dual electric fields, comprising a housing and two electric field devices, characterized in that: The top of the shell is connected to a smoke outlet duct, the bottom of the shell is connected to a smoke inlet duct, a spray water pipe and an insulating partition are arranged inside the shell, the spray water pipe is arranged horizontally and located at the top of the shell, a plurality of spray heads are installed on the spray water pipe, the insulating partition is arranged vertically and located below the spray water pipe, the insulating partition divides the inner cavity of the shell into left and right chambers, two electric field devices are respectively fixedly arranged in the two chambers of the shell, each electric field device includes two electric field units, each electric field unit includes a vertically arranged cathode wire, a weight is fixed to the bottom end of the cathode wire, and an anode plate is arranged in parallel around the cathode wire.

2. The electric demister with double electric fields according to claim 1, characterized in that: An air intake baffle is arranged below the insulating baffle, and the bottom end of the air intake baffle is close to the smoke intake duct.

3. The electric demister with double electric fields according to claim 1, characterized in that: The sprinkler water pipe is connected to an external water source through a water supply pipe.

4. The electric demister with double electric fields according to claim 1, characterized in that: Four high-voltage control cabinets are also arranged outside the shell, and the four high-voltage control cabinets respectively supply power to the four electric field units.

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