Flue gas cooling and purifying device of waste incineration system

Abstract

The utility model discloses a flue gas cooling and purifying device of a waste incineration system, which comprises a spray cooling assembly, a water purifying assembly and an electrostatic purifying assembly which are connected in sequence, the water purifying assembly is provided with a spray assembly, the output end of the spray assembly is connected with the spray cooling assembly, the spray cooling assembly is provided with a flue gas inlet pipe, and the output end of the spray assembly is connected with the electrostatic purifying assembly. The smoke inlet pipe is used for being externally connected with a smoke outlet device of a waste incineration system, the spray cooling assembly is used for cooling smoke, the water purification assembly is used for conducting water purification on the smoke, the electrostatic purification assembly is used for conducting electrostatic purification on the smoke, and an exhaust port is formed in the electrostatic purification assembly. And the exhaust port is used for exhausting the cooled and purified flue gas. According to the waste incineration flue gas treatment device, waste incineration flue gas can be cooled and purified, so that the discharged flue gas can meet the environmental protection standard, and secondary pollution is reduced; in addition, the risk of causing fire disasters can also be reduced by the cooled smoke.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage treatment device technical field, concretely relates to a kind of flue gas cooling and purification device of garbage incineration system. BACKGROUND

[0002] At present, landfill is the main garbage disposal method, but it has the shortcomings of occupying much land, leachate being difficult to handle, secondary pollution of surrounding environment, etc. Garbage incineration method can make garbage volume reduction 90%, mass reduction 70%-80%, greatly reduce the land area occupied, and meet the requirement of reduction; Therefore, in recent years, many cities have introduced related garbage incineration equipment, and handle municipal garbage by incineration method.

[0003] A large amount of flue gas is generated during the incineration of garbage, and the existing garbage incineration equipment lacks a device for cooling and purifying flue gas. Usually, the flue gas after garbage incineration is directly discharged into the atmosphere, which not only causes secondary pollution to the environment, but also has the risk of causing fire by igniting external objects due to direct discharge of high-temperature flue gas. SUMMARY

[0004] In order to solve the problems in the prior art, the utility model provides a flue gas cooling and purification device of garbage incineration system, which comprises a spray cooling assembly, a water purification assembly and an electrostatic purification assembly connected in sequence. The water purification assembly is provided with a spray assembly. The output end of the spray assembly is connected with the spray cooling assembly. The spray cooling assembly is provided with an inlet smoke pipe. The inlet smoke pipe is used to connect an outlet smoke device of a garbage incineration system. The spray cooling assembly is used to cool flue gas. The water purification assembly is used to water purify flue gas. The electrostatic purification assembly is used to electrostatically purify flue gas. The electrostatic purification assembly is provided with an exhaust port. The exhaust port is used to discharge cooled and purified flue gas.

[0005] As a further improvement of the utility model, the spray cooling assembly comprises a mounting body. The mounting body is provided with a cooling tank and a smoke guide pipe. The inlet smoke pipe is connected with the cooling tank. The smoke guide pipe is connected with the water purification assembly. The cooling tank is provided with a spiral channel and a central channel. The lower end of the cooling tank is provided with a gas-water separation cavity. The spray assembly and the inlet smoke pipe are respectively connected with one end of the spiral channel. The spray assembly is used to spray water mist into the spiral channel. The other end of the spiral channel is connected with the gas-water separation cavity. One end of the central channel is connected with the gas-water separation cavity. The other end of the central channel is connected with the smoke guide pipe.

[0006] As a further improvement of the utility model, the cooling tank comprises an inlet tank, an outlet tank and a transition tank which are of the same structure, a spiral channel and a central channel are arranged in the inlet tank, the outlet tank and the transition tank, the inlet pipe is communicated with the spiral channel of the inlet tank, the smoke guide pipe is communicated with the central channel of the outlet tank, the central channel of the inlet tank is communicated with the spiral channel of the transition tank, and the spiral channel of the outlet tank is communicated with the central channel of the transition tank.

[0007] As a further improvement of the utility model, the lower end of the cooling tank is provided with a water collecting groove, the inner cavity of the water collecting groove is communicated with the gas-water separation cavity, a drain pipe is arranged on the water collecting groove, and the drain pipe is connected with the water purification assembly.

[0008] As a further improvement of the utility model, the water purification assembly comprises a water purification tank, an aeration water tank, a sewage purification tank and a gas-water separation tank, the spraying assembly is connected with the water purification tank, the aeration water tank is provided with an aeration assembly, the input end of the aeration assembly is provided with a gas-water mixing pipe, and the gas-water mixing pipe is connected with the spraying cooling assembly; the input end of the spraying assembly is connected with the water purification tank, the output end of the spraying assembly is connected with the gas-water mixing pipe and the spraying cooling assembly respectively, and the spraying assembly is used for spraying clean water into the gas-water mixing pipe and the spraying cooling assembly; the aeration assembly comprises an aeration pump, the input end of the aeration pump is connected with the gas-water mixing pipe, the output end of the aeration pump is communicated with the aeration water tank, the aeration water tank is communicated with the sewage purification tank, the sewage purification tank is communicated with the gas-water separation tank, the gas-water separation tank is provided with a smoke outlet, and the smoke outlet is connected with the electrostatic purification assembly; one side of the sewage purification tank is provided with a pressure filtration purification assembly, the input end of the pressure filtration purification assembly is communicated with the sewage purification tank, the output end of the pressure filtration purification assembly is connected with the water purification tank, and the pressure filtration purification assembly is used for extracting residues and sewage in the sewage purification tank and outputting the purified sewage to the water purification tank.

[0009] As a further improvement of the utility model, the output end of the aeration pump is provided with an aeration pipe, the aeration pipe extends into the aeration water tank, and the tail end of the aeration pipe is provided with a porous mesh plate.

[0010] As a further improvement of the utility model, the sewage purification tank is provided with a residue scraping assembly and a residue collecting groove, the residue scraping assembly is used for concentrating residues in the sewage purification tank to the residue collecting groove, and the input end of the pressure filtration purification assembly is connected with the residue collecting groove.

[0011] As a further improvement of the utility model, the static electricity purification assembly comprises a purification device main body, the purification device main body is of hollow structure, one side of the purification device main body is equipped with a gas-water separation device, the gas-water separation device is communicated with the inner chamber of the purification device main body, the sidewall of the gas-water separation device is equipped with a cigarette receiving pipe, the cigarette receiving pipe is connected with the water purification assembly, the gas-water separation device is used for filtering the water in the flue gas, the exhaust port is arranged at the upper end of the purification device main body, the lower end of the purification device main body is equipped with an ash discharge port, the purification device main body is equipped with a static electricity dust removal device, the static electricity dust removal device is sealingly connected with the inner sidewall of the purification device main body, and the static electricity dust removal device is used for adsorbing the particulate matters in the flue gas.

[0012] As a further improvement of the utility model, the static electricity dust removal device comprises upper and lower sealing plates, the upper and lower sealing plates are sealingly connected with the inner sidewall of the purification device main body respectively, a plurality of anode metal pipes are arranged on the upper sealing plate in an array, the other ends of the anode metal pipes are connected with the lower sealing plate respectively, the anode metal pipes penetrate through the upper and lower sealing plates, cathode metal wires are arranged in the anode metal pipes respectively, and the anode metal pipes and the cathode metal wires are respectively connected with power supplies; the cathode metal wires are in gap cooperation with the inner sidewall of the anode metal pipes, and the lower ends of the cathode metal wires are respectively equipped with counterweights.

[0013] As a further improvement of the utility model, the gas-water separation device comprises a gas-water separation shell, the gas-water separation shell is connected with the purification device main body, and a water filter plate is arranged in the gas-water separation shell; a conical water collecting groove is arranged at the lower end of the inner sidewall of the gas-water separation shell, and a drain port is arranged at the lower end of the conical water collecting groove.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The utility model can cool and purify the flue gas generated by garbage incineration, so that the discharged flue gas can meet the environmental protection standard and the occurrence of secondary pollution is reduced; moreover, the flue gas after cooling will not be high temperature, so that the risk of fire caused by high temperature flue gas is reduced. During operation, the garbage incineration system discharges the flue gas generated by garbage incineration into the spray cooling assembly through the smoke inlet pipe; the spray assembly sprays cooling water into the spray cooling assembly, the cooling water is mixed with the flue gas to cool the flue gas, and the flue gas can also be purified for the first time; the cooled flue gas flows into the water purification assembly, and the flue gas is purified for the second time through the water purification assembly; then the flue gas flows into the static electricity purification assembly, and the flue gas is purified for the third time through the static electricity purification assembly; the flue gas after three layers of purification is discharged from the exhaust port; the particulate matters and dust in the flue gas can be eliminated through three layers of purification, so that the discharged flue gas can meet the environmental protection standard and the temperature is appropriate. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the spray cooling component in an embodiment of this utility model;

[0019] Figure 3 This is a side view of the spray cooling component in an embodiment of the present invention.

[0020] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA;

[0021] Figure 5 This is a schematic diagram of the internal structure of the spray cooling component in an embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the water purification component in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the water purification component from another perspective in an embodiment of this utility model;

[0024] Figure 8 This is a schematic diagram of the internal structure of the water purification component in an embodiment of this utility model;

[0025] Figure 9 This is a schematic diagram of the electrostatic purification component in an embodiment of this utility model;

[0026] Figure 10 This is a schematic diagram of the internal structure of the electrostatic purification component in an embodiment of this utility model. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out various embodiments as broadly described herein and / or as set forth in the various dependent claims below. The description and drawings are illustrative of the application and are not to be construed as limiting thereof. The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. All publications, patent applications, patents, figures and other references mentioned herein are expressly incorporated by reference, in their entirety, for the purpose of describing and disclosing, by way of indication, the compositions and methodologies which constitute the state of the art, and which can be used in addition to or as an alternative to the technique described herein.

[0028] Reference herein to "embodiment" in the specification means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the application described herein is widely applicable to and can be practiced in conjunction with other embodiments.

[0029] For those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0030] As shown in Figures 1-10 A flue gas cooling and purification device of a waste incineration system, comprising a spray cooling assembly 1, a water purification assembly 2 and an electrostatic purification assembly 3 connected in sequence, a spray assembly 4 is arranged on the water purification assembly 2, the output end of the spray assembly 4 is connected with the spray cooling assembly 1, an inlet flue pipe 11 is arranged on the spray cooling assembly 1, the inlet flue pipe 11 is used for connecting an outlet flue device of the waste incineration system, the spray cooling assembly 1 is used for cooling the flue gas, the water purification assembly 2 is used for water purification of the flue gas, the electrostatic purification assembly 3 is used for electrostatic purification of the flue gas, and an exhaust port 31 is arranged on the electrostatic purification assembly 3, the exhaust port 31 is used for discharging the flue gas after cooling and purification.

[0031] When the waste incineration operation is performed, the flue gas generated by the waste incineration equipment is discharged through the inlet flue pipe 11 and enters the spray cooling assembly 1; the spray assembly 4 works to spray cooling water into the spray cooling assembly 1, the cooling water is mixed with the flue gas to cool the flue gas, and at the same time, the flue gas can be purified for the first time; the cooled flue gas flows into the water purification assembly 2, and the flue gas is purified for the second time through the water purification assembly 2; then the flue gas flows into the electrostatic purification assembly 3, and the flue gas is purified for the third time through the electrostatic purification assembly 3, and the flue gas after three layers of purification is discharged from the exhaust port 31; after three layers of purification, the particulate matter and dust in the flue gas can be eliminated, so that the discharged flue gas can meet the environmental protection standard, and the temperature is appropriate.

[0032] The flue gas cooling and purifying device of the garbage incineration system can cool and purify the flue gas of garbage incineration, so that the exhaust gas discharged can meet the environmental protection standard, and the occurrence of secondary pollution is reduced; moreover, the flue gas after cooling will not exist high temperature, thereby avoiding the risk of fire caused by high-temperature flue gas.

[0033] As shown in Figures 2-5 The spraying cooling assembly 1 includes a mounting body 12, the mounting body 12 is provided with a cooling tank and a smoke guide pipe 13, the smoke inlet pipe 11 is connected with the cooling tank, the smoke guide pipe 13 is connected with the water purification assembly 2, the cooling tank is provided with a spiral channel 14 and a central channel 15, the lower end of the cooling tank is provided with a gas-water separation cavity 16, the spraying assembly 4 and the smoke inlet pipe 11 are respectively connected with one end of the spiral channel 14, the spraying assembly 4 is used for spraying water mist into the spiral channel 14, the other end of the spiral channel 14 is connected with the gas-water separation cavity 16, one end of the central channel 15 is connected with the gas-water separation cavity 16, and the other end is connected with the smoke guide pipe 13.

[0034] When working, the flue gas generated by the garbage incineration equipment flows into the spiral channel 14 through the smoke inlet pipe 11, the water mist is sprayed into the spiral channel 14 through the spraying assembly 4, the water mist is mixed with the flue gas, and then flows in the spiral channel 14; on the one hand, the mixing of the water mist and the flue gas can cool the flue gas, achieving the purpose of cooling the flue gas; on the other hand, the water mist can also mix with the particulate matters in the flue gas and take away the particulate matters in the flue gas, thereby achieving the purpose of purifying the flue gas. When the gas-water flows into the gas-water separation cavity 16, the water will continue to flow downward under the action of gravity, and the flue gas purified by the water mist will flow upward through the central channel 15, and then flow out of the cooling tank and into the water purification assembly 2 through the smoke guide pipe 13.

[0035] In the embodiment, the water mist is sprayed out through the spraying assembly 4 and mixed with the flue gas, on the one hand, the flue gas can be cooled, so that the temperature of the flue gas discharged through the smoke guide pipe 13 is appropriate, avoiding the risk of fire caused by high-temperature flue gas; on the other hand, the particulate matters in the flue gas are removed by mixing the water mist with the flue gas, and the flue gas is purified, so that the flue gas discharged through the smoke guide pipe 13 meets the environmental protection requirements and reduces secondary pollution.

[0036] In order to collect the sewage flowing out of the gas-water separation cavity 16, a water collecting tank 17 is installed at the lower end of the cooling tank, the water collecting tank 17 is in the shape of a funnel with a large upper end and a small lower end, the inner cavity of the water collecting tank 17 is connected with the gas-water separation cavity 16, and the lower end of the water collecting tank 17 is provided with a drain pipe 18, which is connected with the water purification assembly 2. When working, the sewage continues to flow downward through the gas-water separation cavity 16, flows into the water collecting tank 17, and finally flows out of the drain pipe 18 and into the water purification assembly 2 for reuse.

[0037] In the embodiment, the cooling spray assembly 1 is provided with a cold water tower 5 on one side, the drain pipe 18 is connected with the cold water tower 5, and the output end of the cold water tower 5 is connected with the water purification assembly 2. The sewage generated by the cooling spray assembly 1 flows into the cold water tower 5 through the drain pipe 18, is cooled by sedimentation in the cold water tower 5, and then flows into the water purification assembly 2 for reuse, so as to realize the recycling of water resources and reduce the waste of water resources.

[0038] The cooling tank comprises the structure-same smoke inlet tank 19, smoke outlet tank 110 and transition tank 111, and the spiral channel 14 and the central channel 15 are arranged in the smoke inlet tank 19, the smoke outlet tank 110 and the transition tank 111. The smoke inlet pipe 11 is connected with the spiral channel 14 of the smoke inlet tank 19, the smoke guide pipe 13 is connected with the central channel 15 of the smoke outlet tank 110, the central channel 15 of the smoke inlet tank 19 is connected with the spiral channel 14 of the transition tank 111, and the spiral channel 14 of the smoke outlet tank 110 is connected with the central channel 15 of the transition tank 111. By arranging multiple tank bodies in the cooling tank, the residence time of the flue gas in the spray system can be prolonged, so as to improve the purification and cooling effect. In specific operation, the flue gas first flows in the spiral channel 14 of the smoke inlet tank 19, mixes with the water mist sprayed by the spray assembly 4, and is subjected to the first cooling and purification. Then the flue gas flows out of the central channel 15 of the smoke inlet tank 19, enters the spiral channel 14 of the transition tank 111, mixes with the water mist sprayed by the spray assembly 4 again, and is subjected to the second cooling and purification. Then the flue gas flows out of the central channel 15 of the transition tank 111, enters the spiral channel 14 of the smoke outlet tank 110, mixes with the water mist sprayed by the spray assembly 4 again, and is subjected to the third cooling and purification. Finally, the flue gas flows out of the central channel 15 of the smoke outlet tank 110 to the smoke guide pipe 13 and is discharged from the spray system.

[0039] In the embodiment, the number of the transition tanks 111 is four, and the central channel 15 of the first transition tank 111 is connected with the spiral channel 14 of the next transition tank 111. The spiral channel 14 of the first transition tank 111 is connected with the central channel 15 of the smoke inlet tank 19, and the central channel 15 of the last transition tank 111 is connected with the spiral channel 14 of the smoke outlet tank 110. By arranging four transition tanks 111, the residence time of the flue gas in the spray system can be further prolonged, so as to improve the cooling and purification effect. In other embodiments, the number of the transition tanks 111 can also be any other number.

[0040] The air-water mixing cavity 112 is arranged on the mounting body 12 at a position corresponding to the spiral channel 14 of each cooling tank. By arranging the air-water mixing cavities 112 independently, the water mist sprayed by the spray assembly 4 can be better mixed with the flue gas, and the flue gas flowing from the rear cooling tank into the front cooling tank is prevented, so that the flue gas can flow along the predetermined line and the stability of the operation is improved.

[0041] As shown in Figures 6-8 The water purification assembly 2 comprises a clean water tank 21, an aeration water tank 22, a sewage purification tank 23 and a gas-water separation tank 24. The clean water tank 21 is used for containing clean water. The spraying assembly 4 is connected with the clean water tank 21. The aeration water tank 22 is provided with an aeration assembly. The input end of the aeration assembly is provided with a gas-water mixing pipe 25. The gas-water mixing pipe 25 is communicated with the smoke guide pipe 13. The flue gas cooled and purified by the spraying cooling assembly 1 can be discharged into the gas-water mixing pipe 25. The input end of the spraying assembly 4 is connected with the clean water tank 21. The output end of the spraying assembly 4 is connected with the gas-water mixing pipe 25 and a gas-water mixing cavity 112. The spraying assembly 4 is used for spraying clean water into the gas-water mixing pipe 25 and the gas-water mixing cavity 112. The clean water in the clean water tank 21 is extracted by the spraying assembly 4 and sprayed into the gas-water mixing pipe 25, so that the flue gas and the clean water are mixed in the gas-water mixing pipe 25.

[0042] The aeration assembly comprises an aeration pump 26. The input end of the aeration pump 26 is connected with the gas-water mixing pipe 25. The output end of the aeration pump 26 is communicated with the aeration water tank 22. The aeration pump 26 is used for extracting the gas-water mixture in the gas-water mixing pipe 25 into the aeration water tank 22. The gas-water mixture is extracted by the aeration pump 26 and delivered into the aeration water tank 22, so that the flue gas and the water can be fully contacted. The particles in the flue gas are adsorbed by the water molecules.

[0043] In the embodiment, the number of the aeration pump 26 is two. In other embodiments, the number of the aeration pump 26 can also be any other number.

[0044] The aeration water tank 22 is communicated with the sewage purification tank 23. When the water in the aeration water tank 22 is full, it will automatically overflow into the sewage purification tank 23. The sewage purification tank 23 is communicated with the gas-water separation tank 24. The gas-water separation tank 24 is provided with a smoke outlet 27. The smoke outlet 27 is connected with the electrostatic purification assembly 3. After the gas-water mixture overflows into the sewage purification tank 23, the purification liquid can be added into the sewage purification tank 23, so that the gas-water in the sewage purification tank 23 is separated. The flue gas and the particles will all float to the water surface. After the flue gas floats, it will enter the gas-water separation tank 24. Then, the flue gas is discharged into the electrostatic purification assembly 3 through the smoke outlet 27.

[0045] One side of the sewage purification tank 23 is provided with a pressure filtration purification assembly 28. The input end of the pressure filtration purification assembly 28 is communicated with the sewage purification tank 23. The output end of the pressure filtration purification assembly 28 is connected with the clean water tank 21. The pressure filtration purification assembly 28 is used for extracting the residues and the sewage in the sewage purification tank 23 and purifying the sewage and then outputting the purified sewage into the clean water tank 21. After the gas-water in the sewage purification tank 23 is separated, the particles will float to the water surface. The clean water sinking to the bottom will automatically flow into the clean water tank 21 for reuse. At the same time, the residues and the sewage in the sewage purification tank 23 are extracted by the pressure filtration purification assembly 28. The sewage is purified and then delivered into the clean water tank 21 for reuse.

[0046] The pressure filtration purification component 28 can use existing extraction and filtration devices, and this utility model does not limit this.

[0047] To improve the purification effect, a return air pump 29 is installed on one side of the aeration tank 22. The input end of the return air pump 29 is connected to the upper end of the wastewater purification tank 23. The inner cavity of the aeration tank 22 is equipped with a jet nozzle 210, and the output end of the return air pump 29 is connected to the jet nozzle 210. The return air pump 29 is used to re-extract the flue gas in the wastewater purification tank 23 back into the aeration tank 22. During operation, after the flue gas and water in the wastewater purification tank 23 separate, the flue gas will float to the surface. At this time, the return air pump 29 extracts this flue gas and injects it back into the aeration tank 22 through the jet nozzle 210 to mix with water, and the water purifies the flue gas again. By setting up the return air pump 29, the flue gas can be repeatedly mixed with water, eliminating particulate matter in the flue gas as much as possible and improving the purification effect of the waste incineration flue gas water purification and reuse system.

[0048] To ensure thorough mixing of flue gas and water, an aeration pipe 211 is installed at the output end of the aeration pump 26. The aeration pipe 211 extends into the aeration water tank 22, and a perforated mesh plate 212 is installed at the end of the aeration pipe 211. During operation, purified water and flue gas are mixed in the air-water mixing pipe 25. The air-water mixture is then drawn into the aeration pipe 211 by the aeration pump 26 and discharged through the perforated mesh plate 212. As the air-water mixture passes through the perforated mesh plate 212, it disperses, ensuring thorough mixing of flue gas and water. Water molecules adsorb particulate matter in the flue gas, thereby removing particulate matter and purifying the flue gas.

[0049] The spray assembly 4 includes a spray pump 41, which is fixedly connected to the clean water tank 21. Spray nozzles 42 are installed in the air-water mixing pipe 25 and each air-water mixing chamber 112. The input end of the spray pump 41 is connected to the clean water tank 21 via a pipe, and the output end of the spray pump 41 is connected to each spray nozzle 42 via a pipe. During operation, the spray pump 41 draws clean water from the clean water tank 21 into the water pipe and delivers it to the spray nozzles 42. The water is then sprayed into the air-water mixing pipe 25 through the spray nozzles 42, mixing the clean water with the flue gas. Simultaneously, the spray pump 41 atomizes the water through the spray nozzles 42 and sprays it into each air-water mixing chamber 112. When the flue gas flows into the spiral channel 14, it mixes with the water mist, which cools and purifies the flue gas.

[0050] In order to make the purified water in the sewage purification tank 23 flow into the purified water tank 21, a communication pipe 213 is arranged in the sewage purification tank 23, the other end of the communication pipe 213 extends into the purified water tank 21, and the horizontal height of the end of the communication pipe 213 extending into the purified water tank 21 is higher than that of the other end. During operation, the user pours the purification liquid into the sewage purification tank 23; after the gas-water mixture overflows from the aeration tank 22 to the sewage purification tank 23, the particulate matters in the flue gas are separated from the flue gas, and the flue gas and the particulate matters float up, so that the water at the bottom of the sewage purification tank 23 is purified water. According to the principle of the communicating vessel, when the water level in the sewage purification tank 23 is higher than the end of the communication pipe 213 extending into the purified water tank 21, the water in the sewage purification tank 23 will automatically flow into the purified water tank 21, and the water in the lower layer of the sewage purification tank 23 is purified water, so that all the water flowing into the purified water tank 21 through the communication pipe 213 is purified water.

[0051] In order to ensure that the water flowing from the sewage purification tank 23 into the purified water tank 21 is purified water, a water level adjusting valve 214 is arranged at the end of the communication pipe 213 extending into the purified water tank 21, and the water level adjusting valve 214 is used to adjust the horizontal height of the communication pipe 213 in the purified water tank 21. By adjusting the height of the end of the communication pipe 213 extending into the purified water tank 21 through the water level adjusting valve 214, the water level in the sewage purification tank 23 can be adjusted to ensure that the water flowing from the sewage purification tank 23 into the purified water tank 21 is clean.

[0052] In order to facilitate the removal of particulate matters in the sewage purification tank 23, a slag scraping assembly and a slag collecting groove 215 are arranged in the sewage purification tank 23, the slag scraping assembly is used to concentrate the residues in the sewage purification tank 23 into the slag collecting groove 215, and the input end of the pressure filtration purification assembly 28 is connected with the slag collecting groove 215. During operation, the particulate matters float up to the water surface of the sewage purification tank 23, the residues and sewage on the water surface of the sewage purification tank 23 are concentrated into the slag collecting groove 215 through the slag scraping assembly, and then the residues and sewage in the slag collecting groove 215 are extracted through the pressure filtration purification assembly 28; the residues are collected through the pressure filtration purification assembly 28, and at the same time, the sewage is purified through the pressure filtration purification assembly 28, and the purified water is re-delivered into the purified water tank 21 for reuse.

[0053] Specifically, the slag scraping assembly includes a slag scraping motor 216, a driving shaft 217 and a transmission shaft 218 are arranged in the sewage purification tank 23, the output end of the slag scraping motor 216 is connected with the driving shaft 217, the driving shaft 217 and the transmission shaft 218 are sleeved with a transmission chain 219, and the transmission chain 219 is provided with a slag scraping plate 220. During operation, the slag scraping motor 216 is operated to drive the driving shaft 217 to rotate, the driving shaft 217 drives the transmission chain 219 and the transmission shaft 218 to rotate, the transmission chain 219 drives the slag scraping plate 220 to move, and the residues and sewage on the water surface of the sewage purification tank 23 are scraped into the slag collecting groove 215 through the slag scraping plate 220; and then the residues and sewage are extracted through the pressure filtration purification assembly 28.

[0054] As Figure 9 , Figure 10 shown, the electrostatic purification assembly 3 includes a purification device body 32, the purification device body 32 is a hollow structure, one side of the purification device body 32 is provided with a gas-water separation device 38, the gas-water separation device 38 is communicated with the inner cavity of the purification device body 32, the sidewall of the gas-water separation device 38 is provided with a smoke collecting pipe 33, the smoke collecting pipe 33 is communicated with the smoke outlet 27, the gas-water separation device 38 is used for filtering out the water in the flue gas; the upper end of the purification device body 32 is provided with an exhaust port 31, the exhaust port 31 is communicated with the outside air, the flue gas after purification is discharged through the exhaust port 31. The lower end of the purification device body 32 is provided with a dust discharge port 34, the dust discharge port 34 is used for discharging the block produced in the purification process, the purification device body 32 is provided with an electrostatic dust removal device 35, the electrostatic dust removal device 35 is sealingly connected with the inner sidewall of the purification device body 32, the electrostatic dust removal device 35 is used for adsorbing the particulate matter in the flue gas.

[0055] In specific operation, the flue gas after water purification flows into the gas-water separation device 38 through the smoke collecting pipe 33, and then removes the water in the flue gas through the gas-water separation device 38; then the flue gas after removing the water flows into the purification device body 32, and then flows into the electrostatic dust removal device 35, the particulate matter in the flue gas can be adsorbed by the electrostatic dust removal device 35, and then the purified flue gas is discharged into the atmosphere through the exhaust port 31; the particulate matter adsorbed in the electrostatic dust removal device 35 will automatically fall into the dust discharge port 34 after agglomeration, and then be uniformly treated.

[0056] In this embodiment, the particulate matter in the flue gas is removed by the electrostatic dust removal device 35, the purpose of purifying the flue gas is achieved, which can meet the environmental protection emission requirements, improve the environmental protection performance of the waste cracking incineration system, and reduce the harm of flue gas generated by waste incineration to the environment or human body.

[0057] The electrostatic dust removal device 35 includes an upper sealing plate 351 and a lower sealing plate 352, the upper sealing plate 351 and the lower sealing plate 352 are sealingly connected with the inner sidewall of the purification device body 32 respectively, a conical gas collecting cavity 36 is arranged above the upper sealing plate 351, and the exhaust port 31 is arranged above the gas collecting cavity 36. The lower sealing plate 352 is communicated with the gas-water separation device 38 below, after the flue gas after removing the water by the gas-water separation device 38 enters the purification device body 32, it first enters below the lower sealing plate 352, and then flows into the electrostatic dust removal device 35 for purification, the flue gas after purification by the electrostatic dust removal device 35 will all flow into the gas collecting cavity 36, and then be discharged into the air through the exhaust port 31.

[0058] A plurality of anode metal tubes 353 are arranged in an array on the upper sealing plate 351, the other ends of the anode metal tubes 353 are respectively connected with the lower sealing plate 352, and the anode metal tubes 353 respectively penetrate the upper sealing plate 351 and the lower sealing plate 352, a cathode metal wire 354 is respectively arranged in each anode metal tube 353, and the anode metal tubes 353 and the cathode metal wire 354 are respectively connected with an external power supply. During operation, the anode metal tubes 353 and the cathode metal wire 354 are connected with the external power supply, so that a high-voltage electric field is formed between the anode metal tubes 353 and the cathode metal wire 354, the air in the anode metal tubes 353 is ionized to generate positive and negative ions, when the flue gas passes through the anode metal tubes 353, the dust particles in the flue gas collide with the gas ions to make the dust particles charged, the dust particles move towards the anode metal tubes 353 or the cathode metal wire 354 and are automatically deposited on the inner side wall of the anode metal tubes 353 or the cathode metal wire 354, finally forming a block of matter which falls down and is discharged from the ash discharge port 34, and the dust particles in the flue gas are removed, and the gas meeting the emission requirements flows into the exhaust port 31 through the gas collection cavity 36 and is discharged into the atmosphere.

[0059] In the embodiment, the cathode metal wire 354 is gap-fitted with the inner side wall of the anode metal tube 353, so that the flue gas can smoothly pass through the anode metal tube 353, so that the particulate matter on the flue gas can be attached to the inner side wall of the anode metal tube 353 or the cathode metal wire 354. In order to improve the stability of the structure, a counterweight 355 is arranged at the lower end of each cathode metal wire 354, so that the cathode metal wire 354 is straightened, so that it is always gap-fitted with the anode metal tube 353.

[0060] The gas-water separation device 38 comprises a gas-water separation shell 381, the gas-water separation shell 381 is fixedly connected with the purification device main body 32, the smoke inlet pipe 11 is installed on the side wall of the gas-water separation shell 381 and is connected with the inner cavity of the gas-water separation shell 381. A water filter plate 382 is installed in the gas-water separation shell 381 and is sealingly connected with the inner side wall of the gas-water separation shell 381, when the flue gas enters the gas-water separation shell 381 through the smoke inlet pipe 11, the flue gas flows through the water filter plate 382, so that the water in the flue gas is filtered by the water filter plate 382, and the flue gas filtered of water flows into the purification device main body 32 through the gas-water separation shell 381.

[0061] In order to improve the water filtering effect, two water filter plates 382 are installed in the gas-water separation shell 381 in the embodiment, so that the water filtering effect on the flue gas is improved by two layers of filtering, and in other embodiments, the number of water filter plates 382 can also be any other number.

[0062] In order to facilitate the collection of the water filtered by the water filtering plate 382, a tapered water collecting groove 383 is arranged at the lower end of the inner side wall of the air-water separation shell 381, and a water outlet 384 is arranged at the lower end of the tapered water collecting groove 383. During operation, the water filtered by the water filtering plate 382 falls into the tapered water collecting groove 383, and then flows into the water outlet 384 under the action of gravity, and is discharged from the air-water separation shell 381 through the water outlet 384.

[0063] In order to facilitate the condensation of the block-shaped material of the particles falling from the cathode metal wire 354, a tapered dust collecting hopper 37 is arranged at the lower end of the purification device body 32, and the dust outlet 34 is arranged at the lower end of the tapered dust collecting hopper 37. When the particles accumulated on the inner side wall of the anode metal pipe 353 or the cathode metal wire 354 form a block-shaped material, the block-shaped material falls into the tapered dust collecting hopper 37 through the inner cavity of the anode metal pipe 353 under the action of gravity, and finally falls out of the purification device body 32 through the dust outlet 34 for unified treatment.

[0064] The flue gas cooling and purification device of the garbage incineration system first cools the flue gas of garbage incineration through the spray cooling assembly 1, and performs the first purification through the mixing of water mist and flue gas. Then, the cooled flue gas is introduced into the water purification assembly 2, the particles in the flue gas are adsorbed through water purification, so as to realize the second purification process of the flue gas. The flue gas after water purification is introduced into the electrostatic purification assembly 3, and the particles in the flue gas are adsorbed again through the electrostatic purification assembly 3, so as to complete the third purification process of the flue gas. Through the spray cooling of the flue gas and the three times of purification of the flue gas, most of the particles in the flue gas can be eliminated, so that the discharged flue gas can meet the environmental protection standard, and the temperature of the discharged flue gas is within a proper range. Moreover, the water resource can be recycled during the operation, so as to reduce the waste of water resource and improve the environmental protection performance.

[0065] The above specific embodiment is a preferred embodiment of the utility model, and does not limit the specific implementation range of the utility model. The range of the utility model includes but is not limited to the specific embodiment. Any equivalent change made according to the utility model is within the protection range of the utility model.

Claims

1. A flue gas cooling and cleaning device for a waste incineration system, characterized by: The utility model provides a garbage incineration system, including spray cooling assembly, water purification assembly and static purification assembly that connect in turn, be equipped with spray assembly on water purification assembly, spray assembly's output with spray cooling assembly links, be equipped with inlet pipe on spray cooling assembly, inlet pipe is used for garbage incineration system's outlet device of external connection, spray cooling assembly is used for cooling to flue gas, water purification assembly is used for water purification to flue gas, static purification assembly is used for electrostatic purification to flue gas, be equipped with exhaust port on static purification assembly, exhaust port is used to discharge the flue gas after cooling purification.

2. The flue gas cooling and cleaning device of the waste incineration system according to claim 1, characterized in that: The spray cooling assembly includes a mounting body, the mounting body is provided with a cooling tank and a smoke guide pipe, the inlet pipe is connected with the cooling tank, the smoke guide pipe is connected with the water purification assembly, the cooling tank is provided with a spiral channel and a central channel, the lower end of the cooling tank is provided with a gas-water separation cavity, one end of the spiral channel is connected with the spray assembly and the inlet pipe respectively, the spray assembly is used for spraying water mist into the spiral channel, the other end of the spiral channel is connected with the gas-water separation cavity, one end of the central channel is connected with the gas-water separation cavity, and the other end of the central channel is connected with the smoke guide pipe.

3. The flue gas cooling and cleaning device of the waste incineration system according to claim 2, characterized in that: The cooling tank includes an inlet tank, an outlet tank and a transition tank which have the same structure, the inlet tank, the outlet tank and the transition tank are provided with a spiral channel and a central channel, the inlet pipe is connected with the spiral channel of the inlet tank, the smoke guide pipe is connected with the central channel of the outlet tank, the central channel of the inlet tank is connected with the spiral channel of the transition tank, and the spiral channel of the outlet tank is connected with the central channel of the transition tank.

4. The flue gas cooling and cleaning device of the waste incineration system according to claim 2, characterized in that: The lower end of the cooling tank is provided with a water collecting tank, the inner cavity of the water collecting tank is connected with the gas-water separation cavity, the water collecting tank is provided with a drain pipe, and the drain pipe is connected with the water purification assembly.

5. The flue gas cooling and cleaning device of the waste incineration system according to claim 1, characterized in that: The water purification assembly includes a water purification tank, an aeration water tank, a sewage purification tank and a gas-water separation tank, the spray assembly is connected with the water purification tank, the aeration water tank is provided with an aeration assembly, the input end of the aeration assembly is provided with a gas-water mixing pipe, and the gas-water mixing pipe is connected with the spray cooling assembly; the input end of the spray assembly is connected with the water purification tank, the output end of the spray assembly is connected with the gas-water mixing pipe and the spray cooling assembly respectively, and the spray assembly is used for spraying purified water into the gas-water mixing pipe and the spray cooling assembly; the aeration assembly includes an aeration pump, the input end of the aeration pump is connected with the gas-water mixing pipe, the output end of the aeration pump is connected with the aeration water tank, the aeration water tank is connected with the sewage purification tank, the sewage purification tank is connected with the gas-water separation tank, the gas-water separation tank is provided with a smoke outlet, and the smoke outlet is connected with the static purification assembly; one side of the sewage purification tank is provided with a pressure filtration purification assembly, the input end of the pressure filtration purification assembly is connected with the sewage purification tank, the output end of the pressure filtration purification assembly is connected with the water purification tank, and the pressure filtration purification assembly is used for extracting residues and sewage in the sewage purification tank and outputting purified sewage to the water purification tank.

6. The flue gas cooling and cleaning device of the waste incineration system according to claim 5, characterized in that: The output end of the aeration pump is provided with an aeration pipe which extends into the aeration tank and has a porous mesh plate at the end.

7. The flue gas cooling and cleaning device of the waste incineration system according to claim 5, characterized in that: The sewage purification tank is provided with a slag scraping assembly and a slag collecting groove, the slag scraping assembly is used to concentrate the residual slag in the sewage purification tank into the slag collecting groove, and the input end of the pressure filtration purification assembly is connected with the slag collecting groove.

8. The flue gas cooling and cleaning device of the waste incineration system according to any one of claims 1-7, characterized in that: The electrostatic purification assembly comprises a purification device body, the purification device body is a hollow structure, one side of the purification device body is provided with a gas-water separation device, the gas-water separation device is connected with the inner cavity of the purification device body, a side wall of the gas-water separation device is provided with a smoke collecting pipe, the smoke collecting pipe is connected with the water purification assembly, the gas-water separation device is used to filter water in flue gas, an exhaust port is arranged at the upper end of the purification device body, a dust discharge port is arranged at the lower end of the purification device body, and an electrostatic dust removal device is arranged in the purification device body and is sealingly connected with the inner side wall of the purification device body.

9. The flue gas cooling and cleaning device of the waste incineration system according to claim 8, characterized in that: The electrostatic dust removal device comprises an upper sealing plate and a lower sealing plate, the upper sealing plate and the lower sealing plate are respectively sealingly connected with the inner side wall of the purification device body, a plurality of anode metal pipes are arranged on the upper sealing plate in an array, the other ends of the anode metal pipes are respectively connected with the lower sealing plate, the anode metal pipes penetrate through the upper sealing plate and the lower sealing plate, a cathode metal wire is arranged in each anode metal pipe, and the anode metal pipes and the cathode metal wire are respectively connected with a power supply. The cathode metal wire is in gap cooperation with the inner side wall of the anode metal pipe, and the lower end of the cathode metal wire is provided with a counterweight.

10. The flue gas cooling and cleaning device of the waste incineration system according to claim 8, characterized in that: The gas-water separation device comprises a gas-water separation shell, the gas-water separation shell is connected with the purification device body, and the gas-water separation shell is provided with a water filtering plate. The inner side wall of the gas-water separation shell is provided with a tapered water collecting groove at the lower end, and the lower end of the tapered water collecting groove is provided with a water discharge port.

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