CN216322612U - Novel purify radioactive aerosol electric precipitation device - Google Patents
Novel purify radioactive aerosol electric precipitation device Download PDFInfo
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- CN216322612U CN216322612U CN202122161946.4U CN202122161946U CN216322612U CN 216322612 U CN216322612 U CN 216322612U CN 202122161946 U CN202122161946 U CN 202122161946U CN 216322612 U CN216322612 U CN 216322612U
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Abstract
The utility model relates to a novel electric dust removal device for purifying radioactive aerosol, which comprises an inlet end, a spraying and pressing area, a wet electric field dust removal area, a strengthened spraying area and an outlet end, wherein the inlet end is connected with the spraying and pressing area; the inlet end, the spraying pressing area, the wet electric field dedusting area, the strengthening spraying area and the outlet end are sequentially connected, and a wet electric dust collector is arranged in the wet electric field dedusting area. The existing wet-type electric dust remover usually removes dust from the electrode plate through water, but the retention time of the water as a wetting agent is short, the capture efficiency of aerosol is not high, and the wetted aerosol cannot be collected and reprocessed. The novel electric dust remover for purifying the radioactive aerosol mainly aims at the radioactive aerosol generated by a nuclear facility retired smelting factory building, and captures the radioactive aerosol in smoke by utilizing good wettability and cohesiveness of an aerosol pressing agent so as to achieve the purposes of recycling and avoiding secondary pollution.
Description
Technical Field
The utility model belongs to the field of radioactive aerosol treatment, and particularly relates to an electric dust removal device for purifying radioactive aerosol.
Background
The radioactive aerosol refers to that the particles in the aerosol have certain radioactivity or the particles are polluted by external radioactive nuclides so that the particles have radioactivity, and the radioactive aerosol not only has the characteristics of common aerosol, but also has the characteristics of the radioactive nuclides. Human beings are in a radioactive aerosol environment and may be damaged in the following ways: 1) after the radioactive aerosol drifts and spreads on human clothing, skin, work machine equipment and wall surfaces, the deposited radioactive source emits radiation, causing radiation damage. 2) The radioactive particle sources suspended in the gas medium cause external irradiation to the human body, and cause certain damage to the skin surface, such as skin ulcer, dermatitis, conjunctivitis, erythema, alopecia, and the like. 3) The radioactive aerosol can be inhaled by human body through respiratory system, and can be further absorbed or diffused in internal organs of human body to make internal irradiation.
In order to cope with different decontamination objects and environments, the traditional decontamination technology is gradually improved, and a series of new methods are applied to the decontamination operation process of part of nuclear facilities. The smelting decontamination technology is characterized in that a proper furnace type is selected, polluted metals are smelted together with a fluxing agent with a specific component, and most of radioactive nuclides in waste are enriched into slag and filter dust. Or part of the radioactive nuclide is adsorbed by adopting a reasonable furnace lining formula. The method can effectively remove the radioactive nuclide in the metal waste, achieves the aim of purifying the metal waste, realizes resource recycling, is convenient for radioactive waste treatment, and realizes containment of the radioactive nuclide. A large amount of smoke is generated in the smelting process, and the smoke is rich in radioactive aerosol. When the smelting plant is used for purifying flue gas, a traditional wet-type electric dust remover is used, and the dust remover usually removes dust from electrode plates through water. The aim of dust fall and dust suppression is achieved by utilizing a wetting mechanism of water, but the retention time of the water as a wetting agent is short, the capture efficiency of aerosol is not high, and the wetted aerosol cannot be collected and reprocessed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a novel electric dust removal device for purifying radioactive aerosol. The device mainly aims at the radioactive aerosol generated by a nuclear facility retired smelting factory building, and captures the radioactive aerosol in the flue gas by utilizing the good wettability and the good cohesiveness of an aerosol pressing agent so as to achieve the purposes of recycling and avoiding secondary pollution.
In order to achieve the above purposes, the utility model adopts the technical scheme that: a novel electric dust remover for purifying radioactive aerosol comprises an inlet end, a spraying and pressing area, a wet electric field dust removing area, a strengthened spraying area and an outlet end; the inlet end, the spraying pressing area, the wet electric field dedusting area, the strengthening spraying area and the outlet end are sequentially connected, and the spraying pressing area and the wet electric field dedusting area capture aerosol through spraying a pressing agent.
Further, the spraying and pressing area is provided with a first delivery pump and a pressing agent preparation tank, the pressing agent preparation tank is connected with a first spraying system, the pressing agent in the pressing agent preparation tank is delivered to the first spraying system through the first delivery pump, and the first spraying system is provided with a liquid supplementing system and a first spraying device.
Furthermore, the first spraying device is provided with a plurality of first large-flow nozzles, and the first large-flow nozzles are arranged at the top of the spraying and pressing area.
Further, a first collecting tank is arranged at the bottom of the spraying and pressing area, and the lower part of the first collecting tank is connected with a first pressing agent treatment device.
Further, be equipped with wet-type electrostatic precipitator and second delivery pump in the wet electric field dust removal district, the briquetting agent preparation jar passes through the second delivery pump and links to each other with the second spray system, and the second spray system is equipped with fluid infusion system and second spray set.
Furthermore, the second spraying device is provided with a plurality of second large-flow nozzles, and the second large-flow nozzles are arranged at the top of the wet electric field dust removal area.
Further, a second collecting tank is arranged at the bottom of the wet electric field dedusting area, and the lower part of the second collecting tank is connected with a second pressing agent treatment device.
Further, the wet electric field dust removing area and the spraying and pressing area share a pressing agent preparation tank.
Further, a third collecting tank is arranged at the bottom of the intensified spraying area, and an alkali liquor treatment device is arranged at the lower part of the third collecting tank;
the alkali liquor treatment device is supplied with alkali liquor through an alkali liquor tank and a third conveying pump, the alkali liquor treatment device is connected with a third spraying system through a fourth conveying pump, and the third spraying system is provided with a liquor supply system and a third spraying device.
Furthermore, the inlets of the spraying pressing area and the enhanced spraying area are respectively provided with a first flow guide area and a second flow guide area, and the cross section areas of the first flow guide area and the second flow guide area are gradually increased along the flue gas conveying direction.
The utility model has the following effects: by adopting the device, the sprayed pressing agent has good viscosity, can well wrap aerosol particles, and has the advantages of high aerosol capture efficiency, capability of collecting and reprocessing radioactive aerosol, avoidance of secondary pollution and the like.
Drawings
FIG. 1 is a block diagram of the system structure of the novel electric dust removing device for purifying radioactive aerosol according to the present invention;
wherein: 1-inlet end, 2-spray pressing area, 3-wet electric field dedusting area, 4-intensified spray area, 5-outlet end, 6-first pressing agent processing device, 7-pressing agent preparation tank, 8-second pressing agent processing device, 9-alkali liquor processing device, 10-alkali liquor tank, 11-first delivery pump, 12-second delivery pump, 13-fourth delivery pump, 14-third delivery pump, 15-first large flow nozzle, 16-second large flow nozzle, 17-third large flow nozzle, 18-wet electric dust collector, 19-first flow guide area, 20-second flow guide area, 21-first collecting tank, 22-second collecting tank and 23-third collecting tank.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1, a novel purification radioactive aerosol electric dust removal device comprises an inlet end 1, a spraying and pressing area 2, a wet electric field dedusting area 3, a strengthened spraying area 4 and an outlet end 5, wherein the inlet end 1, the spraying and pressing area 2, the wet electric field dedusting area 3, the strengthened spraying area 4 and the outlet end 5 are sequentially connected.
The spraying and pressing area 2 is provided with a first delivery pump 11 and a pressing agent preparation tank 7, and the pressing agent preparation tank 7 is provided with a feeding hole and a water replenishing hole. The pressing agent preparation tank 7 is connected with a first spraying system, the pressing agent in the pressing agent preparation tank 7 is conveyed to the first spraying system through a first conveying pump 11, and the first spraying system is provided with a liquid supplementing system and a first spraying device. The first spraying device is provided with a plurality of first large-flow nozzles 15, and the first large-flow nozzles 15 are arranged at the top of the spraying and pressing area 2. The bottom of the spraying and pressing area is provided with a first collecting tank 21, and the lower part of the first collecting tank 21 is connected with a first pressing agent treatment device 6. The aerosol pressing agent sprayed out from the first large-flow nozzle 15 can effectively capture radioactive aerosol contained in the flue gas, and the captured radioactive aerosol enters the first pressing agent treatment device 6 for treatment through the first collecting tank 21 positioned at the bottom of the spraying pressing area.
And a wet electric dust collector 18 and a second conveying pump 12 are arranged in the wet electric field dust removing area 3, the pressing agent preparation tank 7 is connected with a second spraying system through the second conveying pump 12, and the second spraying system is provided with a liquid supplementing system and a second spraying device. The second spraying device is provided with a plurality of second large-flow nozzles 16, and the second large-flow nozzles 16 are arranged at the top of the wet electric field dust removing area 3. The bottom of the wet electric field dedusting area 3 is provided with a second collecting tank 22, and the lower part of the second collecting tank 22 is connected with a second pressing agent processing device 8.
In the present embodiment, the wet electric field dust removal area 3 and the spray pressing area 2 share the pressing agent preparation tank 7 to reduce the volume of the entire apparatus and reduce the cost of the entire apparatus, but in fact, this is not limited thereto, and the wet electric field dust removal area 3 and the spray pressing area 2 may be each separately provided with the pressing agent preparation tank 7.
The second collecting tank 22 functions in the same way as the first collecting tank 21 and the second compressing agent treatment device 8 functions in the same way as the first compressing agent treatment device 6, so that in one embodiment, the wet electric field dust removal region 3 and the spray pressing region 2 can share the collecting tank and the compressing agent treatment device.
The bottom of the intensified spray area 4 is provided with a third collecting tank 23, and the lower part of the third collecting tank is provided with an alkali liquor treatment device 9. The alkali liquor treatment device 9 is characterized in that alkali liquor is supplied to the alkali liquor treatment device through an alkali liquor tank 10 through a third delivery pump 14, and the alkali liquor tank 10 is provided with a water supply port and a material supply port. The alkali liquor treatment device 9 is connected with a third spraying system through a fourth delivery pump 13, and the third spraying system is provided with a liquid supplementing system and a third spraying device. The third spraying device is provided with a plurality of third large-flow nozzles 17, and the third large-flow nozzles 17 are arranged at the top of the strengthened spraying area 4.
The redundant alkali liquor collected by the third collecting tank 23 enters the alkali liquor treatment device 9 for recycling, so that the technical effects of saving the environment and reducing the cost are achieved.
The inlet parts of the spraying and pressing area 2 and the enhanced spraying area 4 are respectively provided with a first flow guide area 19 and a second flow guide area 20, flow guide plates are arranged in the first flow guide area 19 and the second flow guide area 20, and the cross section areas of the first flow guide area 19 and the second flow guide area 20 are gradually increased along the flue gas conveying direction, so that the speed of the flue gas passing through the spraying and pressing area 2 and the enhanced spraying area 4 is reduced, and further, the aerosol particles in the flue gas are fully captured.
In this embodiment, the working process of the novel electric dust remover for purifying radioactive aerosol of the present invention is as follows: the flue gas enters from the inlet end 1, is guided by the first flow guide area 19 and enters the spraying and pressing area 2, in the spraying and pressing area 2, the first large-flow nozzle 15 can spray a large amount of aerosol pressing agent, the aerosol pressing agent sprayed by the first large-flow nozzle 15 can effectively capture radioactive aerosol contained in the flue gas, the captured radioactive aerosol enters the first pressing agent treatment device 6 through the first collecting tank 21 positioned at the bottom of the spraying and pressing area for treatment, then the flue gas reaching the wet electric field dedusting area 3 is subjected to the combined action of the wet electric dust remover 18 and the second spraying system to effectively remove aerosol particles in the flue gas, the flue gas passes through the wet electric field dedusting area 3 and then enters the enhanced spraying area 4 through the flow guide area 20, and the large-flow nozzle 17 in the enhanced spraying area 4 can spray a large amount of high-concentration alkali liquor to remove residual sulfides in the flue gas.
According to the embodiment, based on the characteristics of good wettability and cohesiveness of the aerosol pressing agent, the novel purification radioactive aerosol electric precipitation device disclosed by the utility model is very suitable for flue gas treatment of a nuclear facility decommissioning smelting decontamination factory building, and has the advantages of high aerosol capture efficiency, capability of collecting and reprocessing radioactive aerosol, avoidance of secondary pollution and the like.
The device according to the present invention is not limited to the embodiments described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also belong to the technical innovation scope of the present invention.
Claims (10)
1. A novel electric dust removal device for purifying radioactive aerosol is characterized by comprising an inlet end (1), a spraying and pressing area (2), a wet electric field dust removal area (3), a strengthened spraying area (4) and an outlet end (5); entrance point (1), spray suppression district (2), wet electric field dust removal district (3), strengthen spraying district (4) and exit end (5) and link to each other in proper order, it all carries out the entrapment to aerosol through spraying the briquetting agent to spray suppression district (2) and wet electric field dust removal district (3).
2. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 1, wherein: the spraying and pressing area (2) is provided with a first conveying pump (11) and a pressing agent preparation tank (7), the pressing agent preparation tank (7) is connected with a first spraying system, a pressing agent in the pressing agent preparation tank (7) is conveyed to the first spraying system through the first conveying pump (11), and the first spraying system is provided with a liquid supplementing system and a first spraying device.
3. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 2, wherein: the first spraying device is provided with a plurality of first large-flow nozzles (15), and the first large-flow nozzles (15) are arranged at the top of the spraying and pressing area (2).
4. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 2, wherein: the bottom of the spraying and pressing area is provided with a first collecting tank (21), and the lower part of the first collecting tank (21) is connected with a first pressing agent treatment device (6).
5. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 1, wherein: the wet electric field dedusting area (3) is internally provided with a wet electric precipitator (18) and a second conveying pump (12), the pressing agent preparation tank (7) is connected with a second spraying system through the second conveying pump (12), and the second spraying system is provided with a liquid supplementing system and a second spraying device.
6. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 5, wherein: the second spraying device is provided with a plurality of second large-flow nozzles (16), and the second large-flow nozzles (16) are arranged at the top of the wet electric field dust removing area (3).
7. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 5, wherein: the bottom of the wet electric field dedusting area (3) is provided with a second collecting tank (22), and the lower part of the second collecting tank (22) is connected with a second pressing agent treatment device (8).
8. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 1, wherein: the wet electric field dust removing area (3) and the spraying pressing area (2) share a pressing agent preparation tank (7).
9. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 1, wherein: a third collecting tank (23) is arranged at the bottom of the intensified spraying area (4), and an alkali liquor treatment device (9) is arranged at the lower part of the third collecting tank;
the alkali liquor treatment device (9) is supplied with alkali liquor through an alkali liquor tank (10) and a third conveying pump (14), the alkali liquor treatment device (9) is connected with a third spraying system through a fourth conveying pump (13), and the third spraying system is provided with a liquor supply system and a third spraying device.
10. The novel electric dust removal device for purifying radioactive aerosol as claimed in claim 1, wherein: the spray pressing area (2) and the enhanced spray area (4) are respectively provided with a first flow guide area (19) and a second flow guide area (20), and the cross-sectional areas of the first flow guide area (19) and the second flow guide area (20) are gradually increased along the flue gas conveying direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161946.4U CN216322612U (en) | 2021-09-08 | 2021-09-08 | Novel purify radioactive aerosol electric precipitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161946.4U CN216322612U (en) | 2021-09-08 | 2021-09-08 | Novel purify radioactive aerosol electric precipitation device |
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| Publication Number | Publication Date |
|---|---|
| CN216322612U true CN216322612U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122161946.4U Active CN216322612U (en) | 2021-09-08 | 2021-09-08 | Novel purify radioactive aerosol electric precipitation device |
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|---|---|
| CN (1) | CN216322612U (en) |
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2021
- 2021-09-08 CN CN202122161946.4U patent/CN216322612U/en active Active
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