CN117861339A - Combined parallel bag type filtering device for purifying radioactive flue gas - Google Patents
Combined parallel bag type filtering device for purifying radioactive flue gas Download PDFInfo
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- CN117861339A CN117861339A CN202311495237.7A CN202311495237A CN117861339A CN 117861339 A CN117861339 A CN 117861339A CN 202311495237 A CN202311495237 A CN 202311495237A CN 117861339 A CN117861339 A CN 117861339A
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- 230000002285 radioactive effect Effects 0.000 title claims abstract description 34
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000003546 flue gas Substances 0.000 title claims abstract description 23
- 238000001914 filtration Methods 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 85
- 239000007789 gas Substances 0.000 claims abstract description 28
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims description 24
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 239000003517 fume Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 2
- 238000004140 cleaning Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 7
- 239000010849 combustible waste Substances 0.000 description 3
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002901 radioactive waste Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 241000237942 Conidae Species 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a combined parallel bag type filtering device for purifying radioactive flue gas, which relates to the technical field of filtering. The dust-containing gas particles filtered by the filtering device provided by the invention can reach the emission standard, cannot pollute the environment, has good tightness, and has good radiation protection measures; meanwhile, the maintenance and the filter cartridge replacement of the bag filter can be realized without stopping the machine.
Description
Technical Field
The invention belongs to the technical field of filtration, and particularly relates to a combined parallel bag type filter device for purifying radioactive flue gas.
Background
During operation and maintenance of nuclear facilities such as military industry, scientific research, experiments and nuclear power plants, a large amount of radioactive waste is generated, wherein the combustible waste accounts for about 50 percent, such as plastics, rubber, cotton fabrics, wood, resin, waste oil and the like, and the average specific activity of most solid combustible waste is less than or equal to 1 multiplied by 10 5 Bq/kg range. Incineration is one of the earliest radioactive waste volume reduction technologies, is very suitable for treating the low-level radioactive solid waste, can realize great volume reduction (the volume reduction ratio can reach 80-120), can realize the inorganization of the waste, and is beneficial to final treatment. Therefore, the radioactive combustible solid waste incineration technology is widely used in the united states, france, germany, japan, etc., and is one of the main technologies for treating radioactive waste.
The flue gas discharged from the radioactive combustible waste incinerator contains a large amount of dust and particulate matters, and the flue gas can be discharged into the atmosphere after effective purification. Aiming at the problem, the bag filter has the advantages of high dust removal efficiency, stable operation, wide application range and the like, and is fully applied. The working principle of the bag filter is divided into resistance interception, inertial collision and gravity sedimentation, wherein the resistance interception is the main part. When the particles in the flue gas pass through the filter cylinder, the particles are larger and are captured in the gaps of the filter material, so that a dust layer is formed on the surface of the filter material, namely, the dust layer plays a main role in interception, and therefore, the operation state of the filter cylinder determines the dust removal quality. With the accumulation of thickness to a certain extent, the resistance increases, and dust removal is needed to be carried out again after dust removal or filter cartridge replacement.
In general, the replacement of the bag filter cartridge requires a shutdown and often requires the opening of the bag filter top cover, requiring a long time for one repair or replacement, and is labor intensive. The maintenance and replacement of the filter cartridge of the bag filter reduce the continuous effective operation time of the filter cartridge and influence the long-term stable operation of the whole process. Especially for the occasion of purifying the radioactive flue gas, considering the importance of radiation protection, the replacement of the filter cartridge will be more complicated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a combined parallel bag type filtering device for purifying radioactive flue gas, which is used for filtering radioactive dust-containing gas, and the filtered dust-containing gas particles can reach the emission standard, so that the environment is not polluted, the sealing performance of the device is good, and good radiation protection measures are provided; meanwhile, maintenance and filter cartridge replacement without shutdown of the bag filter can be realized, the filter cartridge is convenient and quick to replace, the service time of the filter cartridge can be effectively prolonged, and the working efficiency is improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a combination parallelly connected pocket type filter equipment for purifying radioactive flue gas, the device is from down supreme including cone fill, dirt room, card, clean room and the blowback subassembly that connects gradually, and exhaust pipeline subassembly is connected the clean room, dust-laden gas by the cone fill gets into, through filter cartridge subassembly in the dirt room filters the back gets into the clean room obtains dust removal purification, finally through exhaust pipeline subassembly discharges, gathers and gets into the low reaches gas circuit.
Further, the combined parallel bag-type filtering device for purifying the radioactive flue gas comprises a cone hopper shell, wherein an air inlet is formed in the side face of the cone hopper shell, dust-containing gas enters the device from the air inlet, and an ash discharge port is formed in the bottom of the cone hopper shell and used for being connected with an external ash discharge system.
Further, the combined parallel bag type filtering device for purifying the radioactive flue gas comprises a dust chamber shell, wherein the dust chamber shell is rectangular, the bottom end of the dust chamber shell is connected with the cone bucket shell, and the top end of the dust chamber shell is connected with the flower plate; the dust chamber shell is internally provided with a vertical partition plate, so that the dust chamber shell is divided into a left dust chamber space and a right dust chamber space which are relatively independent, each independent dust chamber space is internally provided with a filter cartridge assembly, and the filter cartridge assembly is of a lower mounting type and has a quick dismounting function.
Furthermore, the combined parallel bag type filter device for purifying the radioactive flue gas is provided with the glove holes and the windows on the front side plate of each independent dust room space, so that the working condition of the filter cylinder in the device can be conveniently observed and timely cleaned; a temperature measuring port and a dust chamber pressure measuring port are also arranged on the front side plate of each independent dust chamber space and are respectively used for monitoring the working temperature and the dust chamber pressure of the filter cylinder assembly in the dust chamber space; a large-size access door is arranged on the left side plate or the right side plate of each independent dust room space, so that the corresponding filter cylinder can be replaced conveniently.
Further, according to the type of the filter cartridge assembly, the flower plate is provided with the corresponding vent holes and the corresponding connecting holes for fixing the connecting seat of the filter cartridge assembly.
Further, as described above, the number of the clean rooms is two, the two clean rooms are symmetrically arranged on the flower plate, each clean room comprises a clean room shell, the clean room shell is rectangular, and the upper end of the clean room shell is provided with a flange and a top cover, so that the clean room is convenient to open and seal; the blowing pipe is installed on the top cover, vertically downward, and keeps a proper distance from the vent holes on the flower plate, and is used for back blowing the filter cartridge assembly by using compressed air.
Further, as described above, the combined parallel bag filter device for purifying radioactive flue gas is provided with the clean room pressure measuring port on the left side or the right side of each clean room housing for monitoring the clean room pressure, and the clean room pressure measuring port and the dust room pressure measuring port are used together to obtain the pressure difference between two sides of the filter cartridge, so as to judge the working state of the filter cartridge and guide the maintenance or replacement work.
Further, the combined parallel bag-type filter device for purifying radioactive flue gas is described above, the back-flushing assembly is mounted at the top of each clean room, the back-flushing assembly comprises a back-flushing valve, a back-flushing connecting pipe, an electromagnetic valve and a gas bag, the gas outlet of the back-flushing valve is connected with the blowing pipe, the gas inlet of the back-flushing valve is connected with the electromagnetic valve through the back-flushing connecting pipe, and the electromagnetic valve is connected with the gas bag through the back-flushing connecting pipe.
Further, the combined parallel bag type filtering device for purifying the radioactive flue gas is characterized in that the air bag is arranged on the supporting plate and is connected with an external system compressed air pipeline to store and buffer compressed air; the supporting plate is connected with the outer side of the clean room shell to realize fixation.
Further, the combined parallel bag type filter device for purifying radioactive flue gas is characterized in that the rear side of each clean room shell is provided with an exhaust port, and each exhaust port is connected with the exhaust pipeline assembly; the exhaust pipeline assembly comprises two exhaust valves, the two exhaust valves are respectively connected with exhaust ports of the two clean rooms, and the two exhaust valves are connected with two inlets of the tee joint through an exhaust connecting pipe to realize parallel connection; the gas outlet of the tee is connected with a downstream gas circuit, and the filtered gas leaves the device.
Compared with the prior art, the combined parallel bag type filter device for purifying the radioactive flue gas has the following beneficial effects:
1. the device can carry out filtration treatment on radioactive dust-containing gas, and the filtered dust-containing gas particles can reach the emission standard, so that the pollution to the environment is avoided, the tightness of the device is good, and good radiation protection measures are provided;
2. the device can realize non-stop maintenance of the bag filter and replacement of the filter cartridge, and meanwhile, the filter cartridge is convenient and quick to replace, so that the service time of the filter cartridge can be effectively prolonged, and the working efficiency is improved.
Drawings
FIG. 1 is an overall front view of a combined parallel bag filter apparatus for purifying radioactive fumes provided in an embodiment of the present invention;
FIG. 2 is a right side view of the overall structure of the device of FIG. 1;
FIG. 3 is a top plan view of the overall structure of the device of FIG. 1;
in the figure: 1-cone hopper, 11-cone hopper shell, 12-air inlet and 13-ash discharge port; 2-dust chamber, 21-dust chamber shell, 22-glove port, 23-window, 24-access door, 25-filter cartridge component, 26-temperature measuring port and 27-dust chamber pressure measuring port; 3-flower plate, 4-clean room, 41-clean room shell, 42-flange, 43-top cover, 44-exhaust port, 45-blowing pipe and 46-clean room pressure measuring port; the device comprises a 5-back-blowing component, a 51-back-blowing valve, a 52-back-blowing connecting pipe, a 53-electromagnetic valve, a 54-air bag and a 55-supporting plate; 6-exhaust pipeline components, 61-exhaust valves, 62-exhaust connecting pipes, 63-tee joints and 64-air outlets.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 shows a schematic structural diagram of a combined parallel bag-type filtering device for purifying radioactive flue gas, which is provided by the embodiment of the invention, the filtering device comprises a cone hopper 1, a dust chamber 2, a pattern plate 3, a clean room 4 and a back blowing component 5 which are sequentially connected from bottom to top, an exhaust pipeline component 6 is connected with the clean room 4, dust-containing gas enters the dust chamber 2 from the cone hopper 1, enters the clean room 4 after being filtered by a filter cylinder component in the dust chamber 2, is subjected to dust removal and purification, and finally is discharged out of the filtering device through the exhaust pipeline component 6 and is collected into a downstream gas path.
The cone hopper 1 comprises a cone hopper shell 11, the cone hopper shell 11 is in a tapered cone hopper shape with a large upper part and a small lower part, the collected dust and particles are collected conveniently, an air inlet 12 is formed in the side face of the cone hopper shell 11, an upstream air passage is connected through a flange and the like, dust-containing gas enters a bag filter, an ash discharge port 13 is formed in the bottom of the cone hopper shell 11 and is connected with an ash discharge system, and collected dust and particles enter an ash discharge system device to be properly collected and treated.
The dust chamber 2 mainly comprises a dust chamber shell 21, wherein the dust chamber shell 21 is rectangular, the bottom end of the dust chamber shell 21 is connected with the cone shell 11, and the top end of the dust chamber shell is connected with the flower plate 3; the dust chamber housing 21 is internally provided with a vertical partition plate so as to divide the dust chamber housing 21 into a left space and a right space which are relatively independent, wherein each independent space is internally provided with a filter cartridge assembly 25, and the size of each independent space is matched with the model of the filter cartridge assembly 25 arranged in the independent space. The cartridge assembly 25 may be purchased in a commercially available product, in a lower package, and with a quick disconnect feature, such as a screw or snap fit. The glove holes 22 and the windows 23 are sequentially arranged on the front side plate of each independent space of the dust chamber shell 21 from bottom to top at proper height, so that the working condition of the filter cylinder in the dust chamber shell can be conveniently observed and timely cleaned; a temperature measuring port 26 and a dust chamber pressure measuring port 27 are also arranged on the front side plate of each independent space of the dust chamber shell 21 and are respectively used for monitoring the working temperature and the dust chamber pressure of the filter cylinder assembly 25 in the dust chamber shell; a large-sized access door 24 is provided on the left/right side panels of the cleanroom housing 21 to facilitate replacement of the corresponding filter cartridge.
The flower plate 3 is a metal plate, the lower part is connected with the dust chamber 2, and the upper part is connected with the clean chamber 4, and plays a role of bearing a filter cartridge. Depending on the type of cartridge assembly 25, the faceplate 3 is provided with corresponding vent holes and necessary attachment holes for securing the attachment seat of the cartridge assembly 25.
The device comprises two clean rooms 4, wherein the two clean rooms 4 are symmetrically arranged on the flower plate 3 left and right and are completely independent. Each clean room 4 comprises a clean room shell 41, the shape of which is cuboid, and the upper end of the clean room shell is provided with a flange 42 and a top cover 43, so that the clean room shell is convenient to open and realize sealing; the blowing pipe 45 is installed on the top cover 43, vertically downward, and keeps a proper distance from the vent holes on the flower plate 3, and compressed air enters the filter cartridge assembly 25 for back blowing; the rear side of the clean room shell 41 is provided with an exhaust port 44, the left side or the right side of the clean room shell 41 is provided with a clean room pressure measuring port 46 for monitoring the clean room pressure, and the clean room pressure measuring port 46 and the dust room pressure measuring port 27 are used together to obtain the pressure difference of two sides of the filter cartridge, so that the working state of the filter cartridge is judged, and the overhaul or replacement work is guided.
The back-blowing assembly 5 is arranged at the top of each clean room 4 and comprises a back-blowing valve 51, a back-blowing connecting pipe 52, an electromagnetic valve 53, an air bag 54 and a supporting plate 55, wherein an air outlet of the back-blowing valve 51 is connected with the blowing pipe 45 by a flange and the like to form a whole and ensure sealing; the air inlet of the blowback valve 51 is connected with a solenoid valve 53 through a blowback connecting pipe 52, and the solenoid valve 53 is connected with an air bag 54 through the blowback connecting pipe 52. The electromagnetic valve 53 is selected to be a commercial product, and the model is matched with the required blowback performance; the air bag 54 is arranged on the supporting plate 55 and connected with an external system compressed air pipeline to store and buffer compressed air; the support plate 55 is connected to the outside of the clean room housing 41 to achieve fixation.
The exhaust pipeline assembly 6 is arranged at the rear side of the clean room 4 and comprises two exhaust valves 61, an exhaust connecting pipe 62, a tee joint 63 and an air outlet 64, wherein the two exhaust valves 61 are respectively connected with the exhaust ports 44 of the two clean rooms 4 in a flange mode and the like to form a whole and ensure sealing; the two exhaust valves 61 are connected with the two inlets of the tee 63 through the exhaust connecting pipe 62 to realize parallel connection; the outlet of the tee 63 is connected to the downstream air path via outlet 64, from which the filtered air leaves the bag filter.
When the bag filter works, all parts are installed in place, so that the strength and the sealing performance can be kept, and all valves are in an open communication state. The dust-containing gas enters the filtering device through the air inlet 12 of the cone hopper 1, flows upwards to reach the dust chamber 2, is divided into two air paths due to the existence of the partition plate, sequentially enters the two clean chambers 4 through the built-in filter cylinder assembly 25 and the vent holes on the flower plate 3, is subjected to dust removal and purification, enters the exhaust pipeline assembly 6 through the exhaust port 44 of the clean chamber 4, finally is gathered to enter the downstream air path, and is discharged out of the bag filter. During operation, the working state of the filter cylinder can be observed through the window 23 of the dust chamber 2, and the monitoring data of the temperature measuring port 26, the dust chamber pressure measuring port 27 and the clean chamber pressure measuring port 46 are combined, when the back blowing operation is considered to be needed, the electromagnetic valve 53 of the back blowing assembly 5 is opened through the control system, compressed air enters the bag filter through the air bag 54, the back blowing valve 51 and the blowing pipe 45 to back blow the filter cylinder, dust and particles which are shaken off the surface of the filter cylinder fall into the bottom of the cone hopper 1 under the action of gravity, enter the ash discharging system through the ash discharging port 13, and then the electromagnetic valve 53 is closed, so that the back blowing operation is completed; when the back blowing is considered unnecessary, the filter cylinder can be simply cleaned through the glove holes 22 of the dust chamber 2, so that the pollution is not leaked, the radiation protection performance of the device is ensured, and the manual auxiliary operation is convenient. When the filter cartridge reaches the service life or is damaged and needs to be replaced, the exhaust valve 61 connected with the outside of the exhaust port 44 of the corresponding clean room 4 is closed first, the access door 24 of the corresponding dust room 2 is opened, and even if the access door 24 is opened at this time, the pollutant in the dust room 2 does not flow to the outside of the bag filter, but is led into the air path of the other side working normally. Thus, the replacement of the corresponding cartridge is completed through the access door 24, and the cartridge is quickly disassembled and assembled, so that the repair and replacement work can be completed quickly. After that, the access door 24 is closed again, and the corresponding exhaust valve 61 is opened, and the bag filter is restored to normal operation, thereby realizing the maintenance without stopping and the replacement of the filter cartridge. In addition, if the blowback assembly 5 fails and needs to be repaired, the blowback valve 51 can be closed, and the corresponding pipeline is disconnected, namely, the blowback assembly 5 can be disassembled and repaired, and the pipeline can be continuously used after being reinstalled and communicated.
The combined parallel bag type filter device for purifying the radioactive flue gas can realize the filtration treatment of the radioactive dust-containing gas, and the filtered dust-containing gas particles can reach the emission standard without polluting the environment, and the device has good tightness and good radiation protection measures; meanwhile, through the design of the double clean rooms and the separated dust rooms and the cooperation of the exhaust pipeline assembly, the non-stop maintenance and the filter cartridge replacement of the bag filter can be realized, and the filter cartridge replacement is convenient and quick due to the adoption of the quick-disassembly filter cartridge assembly and the large-size access door; the filter cylinder is cleaned on site by matching with the window and the glove hole, so that the service time of the filter cylinder is effectively prolonged, and the working efficiency is improved; the device has good tightness and radiation protection performance, and is used as a barrier for preventing the leakage of internal radioactive substances, so that the safety of operators and the environment is ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The utility model provides a parallelly connected pocket type filter equipment of combination for purifying radioactive flue gas, its characterized in that, the device is supreme including cone fill (1), dirt room (2), flower board (3), clean room (4) and blowback subassembly (5) that connect gradually from down, and exhaust line subassembly (6) are connected clean room (4), dirty gas by cone fill (1) get into, warp filter cartridge subassembly (25) in dirt room (2) get into clean room (4) after filtering, obtain dust removal purification, finally through exhaust line subassembly (6) discharge, collect and get into the low reaches gas circuit.
2. The combined parallel bag filter device for purifying radioactive flue gas according to claim 1, wherein the cone hopper (1) comprises a cone hopper shell (11), an air inlet (12) is arranged on the side surface of the cone hopper shell (11), dust-containing gas enters the device from the air inlet (12), and an ash discharge port (13) is arranged at the bottom of the cone hopper shell (11) and is used for being connected with an external ash discharge system.
3. The combined parallel bag type filter device for purifying radioactive flue gas according to claim 2, wherein the dust chamber (2) comprises a dust chamber shell (21), the dust chamber shell (21) is rectangular, the bottom end is connected with the cone-shaped bucket shell (11), and the top end is connected with the flower plate (3); the dust chamber shell (21) is internally provided with a vertical partition board, so that the dust chamber shell (21) is divided into a left dust chamber space and a right dust chamber space which are relatively independent, each independent dust chamber space is internally provided with a filter cartridge assembly (25), and the filter cartridge assembly (25) is of a lower assembly type and has a rapid disassembly and assembly function.
4. A combined parallel bag filter for purifying radioactive fumes according to claim 3, characterized in that the front side plate of each independent dust room space is provided with a glove hole (22) and a window (23) for facilitating the observation of the working condition of the filter cartridge therein and the timely cleaning; a temperature measuring port (26) and a dust chamber pressure measuring port (27) are also arranged on the front side plate of each independent dust chamber space and are respectively used for monitoring the working temperature and the dust chamber pressure of the filter cylinder assembly (25) in the dust chamber space; a large-size access door (24) is arranged on the left side plate or the right side plate of each independent dust room space, so that the corresponding filter cartridge can be replaced conveniently.
5. The combined parallel bag filter for purifying radioactive fumes according to any of the claims 1 to 4, characterized in that said flower plate (3) is provided with corresponding ventilation holes and connection holes for fixing the connection seats of said cartridge assembly (25), according to the type of said cartridge assembly (25).
6. The combined parallel bag filter device for purifying radioactive fumes according to claim 1, characterized in that the number of the clean rooms (4) is two, the two clean rooms (4) are symmetrically arranged on the flower plate (3) left and right, each clean room (4) comprises a clean room shell (41), the clean room shell (41) is in a cuboid shape, and a flange (42) and a top cover (43) are arranged at the upper end, so that the clean room shell is convenient to open and realize sealing; a blowing pipe (45) is mounted on the top cover (43) vertically downwards at a proper distance from the ventilation holes on the flower plate (3) for back blowing the filter cartridge assembly (25) by using compressed air.
7. The combined parallel bag filter device for purifying radioactive fumes according to claim 6, wherein a clean room pressure measuring port (46) is provided on the left side or the right side of each clean room housing (41) for monitoring the clean room pressure, and the clean room pressure measuring port (46) is used together with the dust room pressure measuring port (27) to obtain the pressure difference of the two sides of the filter cartridge, so as to judge the working state of the filter cartridge and guide the maintenance or replacement work.
8. The combined parallel bag filter device for purifying radioactive fumes according to claim 7, characterized in that said back-flushing assembly (5) is mounted on top of each clean room (4), said back-flushing assembly (5) comprising a back-flushing valve (51), a back-flushing connection pipe (52), a solenoid valve (53) and a gas bag (54), the gas outlet of said back-flushing valve (51) being connected to said blowing pipe (45), the gas inlet thereof being connected to said solenoid valve (53) through said back-flushing connection pipe (52), said solenoid valve (53) being connected to said gas bag (54) through said back-flushing connection pipe (52).
9. The combined parallel bag filter device for purifying radioactive fumes according to claim 8, characterized in that said air bag (54) is placed on a support plate (55), connected to an external system compressed air line, functioning to store and buffer compressed air; the supporting plate (55) is connected with the outer side of the clean room shell (41) to realize fixation.
10. The combined parallel bag filter device for purifying radioactive fumes according to any one of claims 7-9, wherein each clean room housing (41) is provided on the rear side with an exhaust port (44), each exhaust port (44) being connected with the exhaust line assembly (6); the exhaust pipeline assembly (6) comprises two exhaust valves (61), the two exhaust valves (61) are respectively connected with exhaust ports (44) of the two clean rooms (4), and the two exhaust valves (61) are connected with two inlets of a tee joint (63) through an exhaust connecting pipe (62) to realize parallel connection; the air outlet of the tee (63) is connected with a downstream air passage, and the filtered air leaves the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495237.7A CN117861339A (en) | 2023-11-10 | 2023-11-10 | Combined parallel bag type filtering device for purifying radioactive flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495237.7A CN117861339A (en) | 2023-11-10 | 2023-11-10 | Combined parallel bag type filtering device for purifying radioactive flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117861339A true CN117861339A (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311495237.7A Pending CN117861339A (en) | 2023-11-10 | 2023-11-10 | Combined parallel bag type filtering device for purifying radioactive flue gas |
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| Country | Link |
|---|---|
| CN (1) | CN117861339A (en) |
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2023
- 2023-11-10 CN CN202311495237.7A patent/CN117861339A/en active Pending
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