Device for removing dust from flue gas generated after household garbage incineration

Abstract

The utility model relates to a device for dedusting flue gas after household garbage incineration, which comprises an impurity removal mechanism, a spraying mechanism, a cyclone dedusting mechanism, an electrostatic dedusting mechanism and a deodorization mechanism, the top of the impurity removal mechanism is communicated to the lower part of the spraying mechanism through an air supply pipe, and the upper part of the spraying mechanism is communicated to the lower part of the cyclone dedusting mechanism through an air supply pipe; an exhaust fan is arranged at the top of the cyclone dust removal mechanism and connected with an air supply pipe to communicate with the bottom of the electrostatic dust removal mechanism and the deodorization mechanism, and the top of the electrostatic dust removal mechanism communicates with the deodorization mechanism through the air supply pipe. According to the utility model, the impurity removal mechanism, the spraying mechanism, the cyclone dust removal mechanism, the electrostatic dust removal mechanism and the deodorization mechanism are sequentially arranged to carry out large-particle cyclone impurity removal treatment, spraying dust removal treatment, cyclone dust removal and steam removal treatment, electrostatic dust removal treatment and deodorization treatment on flue gas generated after household garbage incineration; large-particle impurities and smoke dust in flue gas can be efficiently removed, the dust removal effect is good, and the dust removal quality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a device for removing dust from flue gas after burning domestic garbage. Background Art

[0002] Due to the massive increase in domestic waste in modern society, it will cause problems such as large land area and environmental pollution. Therefore, in the prior art, there is a method of treating domestic waste by incinerating the domestic waste. The waste incineration is carried out through appropriate thermal decomposition, combustion, melting and other reactions.

[0003] During the burning process of garbage, due to the complexity and unevenness of the garbage components, many different chemical reactions occur during the incineration process. The flue gas produced includes a large amount of particulate matter, smoke and other chemical substances, which contain components that are directly and indirectly harmful to the human body and the environment, including carbon dioxide, carbon monoxide, nitrogen oxides, sulfides, chlorides, fluorides, heavy metals and other harmful substances. Therefore, garbage incineration facilities must be equipped with flue gas treatment facilities. The dust content in the flue gas generated by garbage incineration is very large. The flue gas needs to be dedusted and then other chemical substances in the flue gas are removed to avoid large particle impurities in the smoke from clogging or damaging the equipment. Even if the garbage incineration flue gas does not contain harmful chemicals, it needs to be dedusted before being discharged to prevent heavy metals, organic pollutants, etc. from being discharged into the environmental medium again to cause environmental pollution and affect human health. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of dust removal device for flue gas after the incineration of domestic waste to solve the problem in the prior art that the flue gas after the incineration of domestic waste contains a large amount of components including particulate matter, heavy metals, organic pollutants, chemical pollution, etc., which will pollute the environment and affect the ecology and human health.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: to provide a device for removing dust from flue gas after incineration of domestic waste, characterized in that it includes a debris removal mechanism, a spray mechanism, a cyclone dust removal mechanism, an electrostatic dust removal mechanism and a deodorization mechanism, the top of the debris removal mechanism is connected to the lower part of the spray mechanism through an air supply pipe, the upper part of the spray mechanism is connected to the lower part of the cyclone dust removal mechanism through an air supply pipe, the top of the cyclone dust removal mechanism is provided with an exhaust fan, the exhaust fan is connected to the bottom of the electrostatic dust removal mechanism and the deodorization mechanism respectively through the connecting air supply pipe, the top of the electrostatic dust removal mechanism is connected to the deodorization mechanism through the air supply pipe, and the deodorization mechanism is also provided with an exhaust fan.

[0006] Furthermore, the impurity removal mechanism includes an impurity removal barrel and an overflow box, the impurity removal barrel is arranged in the overflow box, the upper part of the impurity removal barrel is an impurity removal chamber, and the lower part is an impurity removal sewage chamber, a funnel-shaped impurity removal drainage piece connected to the impurity removal chamber is provided in the impurity removal sewage chamber, and an impurity removal overflow port is provided on the side wall of the upper part of the impurity removal sewage chamber; a smoke inlet pipe is provided at the lower part of the impurity removal chamber, and two impurity removal nozzles are provided in sequence on the side wall of the impurity removal chamber in the vertical direction, and an impurity removal nozzle is also provided on the side wall of the smoke inlet pipe.

[0007] Furthermore, the spray mechanism includes a spray tower, in which a spray device is provided, and the top of the impurity removal barrel is connected to the bottom of the spray tower through an air supply pipe.

[0008] Furthermore, the cyclone dust removal mechanism includes a dust removal barrel, the upper part of the dust removal barrel is a dust removal chamber, and the lower part is a dust removal sewage chamber. A funnel-shaped dust removal drainage piece connected to the dust removal chamber is provided in the dust removal sewage chamber, and a dust removal drainage port is provided on the side wall of the upper part of the dust removal sewage chamber; a smoke inlet pipe is provided at the lower part of the dust removal chamber, and the top of the spray tower is connected to the smoke inlet pipe through an air supply pipe, and the exhaust fan is arranged at the top of the dust removal barrel, and the bottom of the cyclone dust removal mechanism is also connected to the bottom of the spray tower through a connecting pipe.

[0009] Furthermore, a cyclone plate is provided in the smoke inlet pipe, one side of the cyclone plate is fixed to the inner wall of the smoke inlet pipe, and the other side is inclined toward the inside of the dust removal barrel or the debris removal barrel.

[0010] Furthermore, the electrostatic dust removal mechanism includes a bracket, an electrostatic upper box, an electrostatic lower box, an air inlet box and a sewage tank. The electrostatic upper box and the electrostatic lower box are both hollow and fixed on the bracket. The electrostatic upper box is located above the electrostatic lower box. Several electrostatic tubes are evenly arranged between the electrostatic upper box and the electrostatic lower box, and are connected through the electrostatic tubes; the air inlet box is fitted below the electrostatic lower box, and the sewage tank is arranged below the air inlet box;

[0011] An electrostatic plate is provided in both the electrostatic upper box and the electrostatic lower box. Four insulating pillars are fixedly provided at the four corners of the electrostatic plate in the electrostatic upper box, and electrostatic rods are evenly fixedly provided at the remaining parts. The tops of the insulating pillars are fixed at the top of the electrostatic upper box. The insulating pillars and the electrostatic rods are provided corresponding to several electrostatic tubes, and respectively penetrate the corresponding electrostatic tubes downwards and are connected with the electrostatic plate in the electrostatic lower box. The insulating pillars and the electrostatic rods are suspended in the electrostatic tubes.

[0012] A plurality of drainage holes are evenly arranged at the connection position between the electrostatic lower box and the air inlet box, and the electrostatic lower box and the air inlet box are connected through the drainage holes; a drainage pipe is arranged at the lower part of the air inlet box, and the drainage pipe is arranged above the sewage tank.

[0013] Furthermore, a distribution box is provided at each of the four corners of the electrostatic upper box, and an observation door is provided on each of the two opposite sides of the electrostatic lower box.

[0014] Furthermore, the deodorizing mechanism includes a deodorizing box and a deodorant arranged in the deodorizing box. The deodorizing box is also arranged below the air inlet box. The exhaust fan on the top of the dust removal barrel is respectively connected to one side of the deodorizing box and the air inlet box through the air supply pipe. The electrostatic upper box is connected to the deodorizing box through the air supply pipe, and the other side of the deodorizing box is also connected to the exhaust fan.

[0015] Furthermore, two serrated wrappings are provided on the periphery of the portion of the electrostatic rod located in the electrostatic tube, and the electrostatic rod is wrapped between the two wrappings; and two symmetrical cleaning nozzles are provided on the top of each electrostatic tube.

[0016] Furthermore, water pumps are provided at the bottom of the dust removal barrel, the bottom of the debris removal barrel and the bottom of the overflow tank. The water pumps are connected to sewage pipes, and the sewage tank is also connected to a sewage pipe.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The utility model is a device for removing dust from flue gas after the incineration of domestic waste, which is equipped with a cleaning mechanism, a spraying mechanism, a cyclone dust removal mechanism, an electrostatic dust removal mechanism and a deodorization mechanism in sequence. The flue gas generated after the incineration of domestic waste is subjected to large-particle cyclone cleaning, spraying dust removal, cyclone dust removal and water vapor removal, and finally electrostatic dust removal and deodorization. The large-particle impurities and smoke dust in the flue gas can be removed more efficiently, and the dust removal effect is good and the dust removal quality is high.

[0019] (2) The utility model is a device for removing dust from flue gas after the incineration of domestic waste. The electrostatic dust removal mechanism is provided by energizing the electrostatic rod. After the flue gas enters the air inlet box, it enters the electrostatic lower box, the electrostatic tube and the electrostatic upper box in sequence. During the process, the dust-containing flue gas passes through the electric field generated by the electricity on the electrostatic rod, and the gas molecules are ionized in the high-voltage electric field to produce charged particles. These charged particles collide with suspended particles in the air, causing them to be charged. The charged particles are attracted to the electrode with the opposite charge (i.e., the electrostatic rod) under the action of the electric field force, and accumulate on the electrode to form a dust layer. The electrostatic dust removal treatment of the flue gas is then completed. It can remove fine dust with a smaller particle size in the flue gas, and the high purification rate ensures that the flue gas is clean enough after dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Figure 1The utility model is a schematic diagram of the overall structure of a device for removing dust from flue gas after burning domestic waste.

[0021] Figure 2 For the utility model Figure 1 Side view of the smoke inlet pipe.

[0022] Figure 3 For the utility model Figure 1 Internal perspective view of the electrostatic upper box and the electrostatic lower box.

[0023] Figure 4 For the utility model Figure 1 The rear view of the electrostatic dust removal mechanism and deodorization mechanism as a whole.

[0024] Figure 5 For the utility model Figure 3 Enlarged view of point A in .

[0025] Figure 6 It is a perspective view of the inner bottom structure of the electrostatic lower box of the utility model.

[0026] Among them, 1-air supply pipe, 2-exhaust fan, 3-debris barrel, 4-overflow box, 5-debris chamber, 6-debris sewage chamber, 7-debris drainage parts, 8-debris overflow port, 9-smoke inlet pipe, 10-debris nozzle, 11-spray tower, 12-spray device, 13-dust barrel, 14-dust chamber, 15-dust sewage chamber, 16-dust drainage parts, 17-dust drainage port, 18-connecting pipe, 19-cyclone plate, 20- bracket, 21- electrostatic upper box, 22- electrostatic lower box, 23- air inlet box, 24- sewage tank, 25- electrostatic tube, 26- electrostatic plate, 27- insulating support, 28- electrostatic rod, 29- sewage hole, 30- sewage pipe, 31- distribution box, 32- observation door, 33- deodorizing box, 34- deodorant, 35- valve, 36- package, 37- water pump, 38- sewage pipe, 39- cleaning nozzle. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0028] The utility model provides a device for removing dust from flue gas after burning domestic waste, and its specific structure is as follows Figure 1As shown, it includes a debris removal mechanism, a spray mechanism, a cyclone dust removal mechanism, an electrostatic dust removal mechanism and a deodorization mechanism. The top of the debris removal mechanism is connected to the lower part of the spray mechanism through an air supply pipe 1, and the upper part of the spray mechanism is connected to the lower part of the cyclone dust removal mechanism through an air supply pipe. An exhaust fan 2 is provided on the top of the cyclone dust removal mechanism, and the exhaust fan is connected to the bottom of the electrostatic dust removal mechanism and the deodorization mechanism respectively through the connecting air supply pipe. The top of the electrostatic dust removal mechanism is connected to the deodorization mechanism through the air supply pipe, and the deodorization mechanism is also provided with an exhaust fan 2.

[0029] The impurity removal mechanism of the utility model includes an impurity removal barrel 3 and an overflow box 4. The impurity removal barrel is arranged in the overflow box. The upper part of the impurity removal barrel is an impurity removal chamber 5, and the lower part is an impurity removal sewage chamber 6. The impurity removal sewage chamber is provided with a funnel-shaped impurity removal drainage piece 7 connected to the impurity removal chamber, and the upper side wall of the impurity removal sewage chamber is provided with an impurity removal overflow port 8; the lower part of the impurity removal chamber is provided with a smoke inlet pipe 9, and the side wall of the impurity removal chamber is provided with two impurity removal nozzles 10 in sequence in the vertical direction, and the impurity removal nozzle on the impurity removal chamber is arranged above the smoke inlet pipe. Impurity removal nozzles are also provided on the side walls of the smoke inlet pipe. The impurity removal nozzles spray the smoke entering the smoke inlet pipe to remove large particles of impurities. The sewage with large particles of impurities generated by the spraying passes downward through the impurity removal drainage piece into the bottom of the impurity removal sewage chamber. When there is too much sewage, it will be discharged from the impurity removal overflow port into the overflow box. The liquid sprayed by the impurity removal nozzle has water pressure and can be repeatedly reflected in all directions in the impurity removal barrel, so it can eventually cover the entire impurity removal barrel to remove impurities from the flue gas.

[0030] The spray mechanism of the utility model comprises a spray tower 11, in which a spray device 12 is arranged, and the top of the impurity removal barrel is connected to the bottom of the spray tower through an air supply pipe.

[0031] The cyclone dust removal mechanism of the utility model comprises a dust removal barrel 13, the upper part of the dust removal barrel is a dust removal chamber 14, the lower part is a dust removal sewage chamber 15, a funnel-shaped dust removal drainage piece 16 connected to the dust removal chamber is arranged in the dust removal sewage chamber, and a dust removal drainage port 17 is arranged on the side wall of the upper part of the dust removal sewage chamber; a smoke inlet pipe 9 is arranged at the lower part of the dust removal chamber, the top of the spray tower is connected to the smoke inlet pipe through the air supply pipe 1, the exhaust fan 2 is arranged at the top of the dust removal barrel, and the bottom of the cyclone dust removal mechanism is also connected to the bottom of the spray tower through a connecting pipe 18, and the connecting pipe can make the sewage in the spray tower flow into the dust removal barrel, and be discharged together with the sewage in the dust removal barrel.

[0032] Preferably, a cyclone plate 19 is provided in the smoke inlet pipe 9. Figure 2As shown, one side of the cyclone plate is fixed to the inner wall of the smoke inlet pipe, and the other side is inclined toward the inside of the dust removal barrel or the impurity removal barrel. The function of the cyclone plate is to block the flue gas entering the impurity removal barrel or the dust removal barrel and change its direction to form a cyclone, thereby being able to throw out large particles of impurities or smoke and dust. In particular, the top of the dust removal barrel is equipped with an exhaust fan to exhaust air, which can form a cyclone better and faster for dust removal. At the same time, it can also throw out the water vapor in the flue gas sprayed by the spray tower and retain it in the dust removal barrel, preparing for electrostatic dust removal and avoiding short circuit of the gas with water vapor during electrostatic dust removal. The sewage with smoke and dust intercepted by the cyclone in the dust removal barrel passes downward through the dust removal drainage parts and enters the bottom of the dust removal sewage chamber.

[0033] The electrostatic dust removal mechanism of the utility model comprises a bracket 20, an electrostatic upper box 21, an electrostatic lower box 22, an air inlet box 23 and a sewage tank 24. The electrostatic upper box and the electrostatic lower box are both hollow and fixed on the bracket. The electrostatic upper box is located above the electrostatic lower box. Several electrostatic tubes 25 are evenly arranged between the electrostatic upper box and the electrostatic lower box, and are connected through the electrostatic tubes. The air inlet box is fitted below the electrostatic lower box, and the sewage tank is arranged below the air inlet box.

[0034] An electrostatic plate 26 is provided in both the electrostatic upper box and the electrostatic lower box. Figure 3 As shown, four insulating pillars 27 are fixedly provided at the four corners of the electrostatic plate in the electrostatic upper box, and electrostatic rods 28 are evenly fixedly provided at the other parts. The tops of the insulating pillars 27 are fixed to the top of the electrostatic upper box, and are used to suspend and fix the two electrostatic plates and several electrostatic rods as a whole. The insulating pillars and electrostatic rods are provided corresponding to several electrostatic tubes, and respectively penetrate downwards through the corresponding electrostatic tubes and are connected to the electrostatic plates in the electrostatic lower box. The insulating pillars and electrostatic rods are suspended in the electrostatic tubes to discharge as a whole in the air, and perform electrostatic dust removal on the incoming gas. In order to show it more clearly, Figure 3 Only one insulating support and one electrostatic rod running through the electrostatic tube are shown, and the rest of the electrostatic tube is not shown.

[0035] Several drainage holes 29 are evenly arranged at the connection position between the electrostatic lower box and the air inlet box. Figure 6 As shown, the electrostatic lower box and the air inlet box are connected through the drain hole, and a drain pipe 30 is provided at the lower part of the air inlet box. Figure 4 As shown, the sewage pipe is arranged above the sewage tank. The dust generated by electrostatic dust removal or the sewage generated when cleaning the electrostatic tube and the electrostatic rod is discharged downward through the sewage hole into the air inlet box, and then discharged into the sewage tank through the sewage pipe on the air inlet box.

[0036] The utility model has a distribution box 31 at each of the four corners of the electrostatic upper box, which is electrically connected to the electrostatic rod to generate an electric field in the electrostatic upper box, the electrostatic lower box and the electrostatic tube to perform electrostatic dust removal. An observation door 32 is provided on two opposite sides of the electrostatic lower box.

[0037] The deodorizing mechanism of the utility model comprises a deodorizing box 33 and a deodorant 34 arranged in the deodorizing box. The deodorizing box is also arranged below the air inlet box and arranged in parallel with the sewage box. The exhaust fan on the top of the dust removal barrel is respectively connected to one side of the deodorizing box and the air inlet box through an air supply pipe, and the air supply pipes connecting the air inlet box and the deodorizing box are respectively provided with valves 35. The electrostatic upper box is connected to the deodorizing box through the air supply pipe, and the other side of the deodorizing box is also connected to the exhaust fan 2. The gas entering the deodorizing box is deodorized and sterilized by the deodorant, and then drawn out by the exhaust fan into other processing equipment or directly discharged (to meet the emission standards).

[0038] Preferably, the electrostatic rod of the utility model is provided with two serrated wrapping members 36 on the periphery of the part located in the electrostatic tube, such as Figure 5 As shown, the electrostatic rod is wrapped between two wrapping pieces, and the sawtooth structure can increase the contact area with fine pollutants. The sawtooth structure can also increase the electric field strength, so that fine dust in the air can be captured and attached more effectively. Two symmetrical cleaning nozzles 39 are provided on the top of each electrostatic tube to rinse the electrostatic tube and the electrostatic rod after electrostatic dust removal.

[0039] The bottom of the dust removal bucket, the bottom of the debris removal bucket and the bottom of the overflow tank of the utility model are all provided with water pumps 37, and the water pumps are all connected to a sewage pipe 38. The sewage tank is also connected to a sewage pipe 38 for discharging sewage from the dust removal bucket, the debris removal bucket, the overflow tank and the sewage tank.

[0040] The specific dust removal process of the device for dust removal of flue gas after incineration of domestic waste of the utility model is as follows: the flue gas generated after incineration of domestic waste enters from the smoke inlet pipe of the impurity removal mechanism, passes through the cyclone plate to form a cyclone, and the large particles of impurities contained in the flue gas are thrown out, and at the same time, liquid is sprayed through three impurity removal nozzles to perform a preliminary cleaning of impurities in the flue gas, the flue gas after the preliminary cleaning enters the bottom of the spray tower through the air supply pipe, and is secondary cleaned by the spray device during the rising process from the bottom of the spray tower, and the flue gas after the secondary cleaning enters the dust removal barrel through the air supply pipe, and forms a cyclone through the cyclone plate at the air inlet pipe position of the dust removal barrel, and due to the exhaust of the exhaust fan It is sucked and rises quickly, trapping some dust and residual water vapor from the second cleaning in the dust removal barrel. The gas passing through the cyclone dust removal mechanism enters the electrostatic dust removal mechanism or the deodorization mechanism according to the cleanliness level (the gas that is clean enough and does not need further dust removal can be directly passed into the deodorization box). The gas that needs to enter the electrostatic dust removal mechanism enters from the air inlet box, and passes through the electrostatic lower box, the electrostatic tube and the electrostatic upper box in turn for electrostatic dust removal, and is sent to the deodorization box through the air supply pipe in the electrostatic upper box for deodorization. The flue gas that has passed the cyclone dust removal mechanism is clean enough and can also directly enter the deodorization mechanism for deodorization. The deodorized gas is extracted from the exhaust fan.

[0041] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A device for removing dust from flue gas after burning domestic waste, characterized in that: It includes a debris removal mechanism, a spray mechanism, a cyclone dust removal mechanism, an electrostatic dust removal mechanism and a deodorization mechanism. The top of the debris removal mechanism is connected to the lower part of the spray mechanism through an air supply pipe, the upper part of the spray mechanism is connected to the lower part of the cyclone dust removal mechanism through an air supply pipe, the top of the cyclone dust removal mechanism is provided with an exhaust fan, the exhaust fan is connected to the bottom of the electrostatic dust removal mechanism and the deodorization mechanism respectively through the air supply pipe, the top of the electrostatic dust removal mechanism is connected to the deodorization mechanism through the air supply pipe, and the deodorization mechanism is also provided with an exhaust fan.

2. The device for removing dust from flue gas after incineration of domestic waste according to claim 1, characterized in that: The impurity removal mechanism comprises an impurity removal barrel and an overflow tank. The impurity removal barrel is arranged in the overflow tank. The upper part of the impurity removal barrel is an impurity removal chamber, and the lower part is an impurity removal sewage chamber. A funnel-shaped impurity removal drainage piece connected to the impurity removal chamber is arranged in the impurity removal sewage chamber, and an impurity removal overflow port is arranged on the side wall of the upper part of the impurity removal sewage chamber; a smoke inlet pipe is arranged at the lower part of the impurity removal chamber, and two impurity removal nozzles are arranged in sequence on the side wall of the impurity removal chamber in the vertical direction, and an impurity removal nozzle is also arranged on the side wall of the smoke inlet pipe.

3. The device for removing dust from flue gas after incineration of domestic waste according to claim 2, characterized in that: The spray mechanism comprises a spray tower, in which a spray device is arranged, and the top of the impurity removal barrel is connected to the bottom of the spray tower through an air supply pipe.

4. The device for removing dust from flue gas after incineration of domestic waste according to claim 3 is characterized in that: The cyclone dust removal mechanism includes a dust removal barrel, the upper part of the dust removal barrel is a dust removal chamber, and the lower part is a dust removal sewage chamber. A funnel-shaped dust removal drainage piece connected to the dust removal chamber is provided in the dust removal sewage chamber, and a dust removal drainage port is provided on the side wall of the upper part of the dust removal sewage chamber; a smoke inlet pipe is provided at the lower part of the dust removal chamber, and the top of the spray tower is connected to the smoke inlet pipe through an air supply pipe, and the exhaust fan is arranged on the top of the dust removal barrel, and the bottom of the cyclone dust removal mechanism is also connected to the bottom of the spray tower through a connecting pipe.

5. The device for removing dust from flue gas after incineration of domestic waste according to claim 4, characterized in that: A cyclone plate is arranged in the smoke inlet pipe, one side of the cyclone plate is fixed to the inner wall of the smoke inlet pipe, and the other side is inclined toward the inside of the dust removal barrel or the impurity removal barrel.

6. The device for removing dust from flue gas after incineration of domestic waste according to claim 4, characterized in that: The electrostatic dust removal mechanism includes a bracket, an electrostatic upper box, an electrostatic lower box, an air inlet box and a sewage tank. The electrostatic upper box and the electrostatic lower box are both hollow and fixed on the bracket. The electrostatic upper box is located above the electrostatic lower box. Several electrostatic tubes are evenly arranged between the electrostatic upper box and the electrostatic lower box, and are connected through the electrostatic tubes; the air inlet box is fitted below the electrostatic lower box, and the sewage tank is arranged below the air inlet box; An electrostatic plate is provided in both the electrostatic upper box and the electrostatic lower box. Four insulating pillars are fixedly provided at the four corners of the electrostatic plate in the electrostatic upper box, and electrostatic rods are evenly fixedly provided at the remaining parts. The tops of the insulating pillars are fixed at the top of the electrostatic upper box. The insulating pillars and the electrostatic rods are provided corresponding to several electrostatic tubes, and respectively penetrate the corresponding electrostatic tubes downwards and are connected with the electrostatic plate in the electrostatic lower box. The insulating pillars and the electrostatic rods are suspended in the electrostatic tubes. A plurality of drainage holes are evenly arranged at the connection position between the electrostatic lower box and the air inlet box, and the electrostatic lower box and the air inlet box are connected through the drainage holes; a drainage pipe is arranged at the lower part of the air inlet box, and the drainage pipe is arranged above the sewage tank.

7. The device for removing dust from flue gas after incineration of domestic waste according to claim 6, characterized in that: A distribution box is provided at each of the four corners of the electrostatic upper box, and an observation door is provided on each of the two opposite sides of the electrostatic lower box.

8. The device for removing dust from flue gas after incineration of domestic waste according to claim 6, characterized in that: The deodorizing mechanism comprises a deodorizing box and a deodorant arranged in the deodorizing box. The deodorizing box is also arranged below the air inlet box. The exhaust fan on the top of the dust removal barrel is respectively connected to one side of the deodorizing box and the air inlet box through an air supply pipe. The electrostatic upper box is connected to the deodorizing box through an air supply pipe, and the other side of the deodorizing box is also connected to the exhaust fan.

9. The device for removing dust from flue gas after incineration of domestic waste according to claim 6, characterized in that: Two serrated wrappings are arranged around the part of the electrostatic rod located in the electrostatic tube, and the electrostatic rod is wrapped between the two wrappings; and two symmetrical cleaning nozzles are arranged on the top of each electrostatic tube.

10. The device for removing dust from flue gas after incineration of domestic waste according to claim 6, characterized in that: The bottom of the dust removal bucket, the bottom of the debris removal bucket and the bottom of the overflow tank are all provided with water pumps, the water pumps are all connected to sewage pipes, and the sewage tank is also connected to a sewage pipe.

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