CN219942367U - Flue gas purifying equipment for coal-fired power plant - Google Patents
Flue gas purifying equipment for coal-fired power plant Download PDFInfo
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- CN219942367U CN219942367U CN202321215358.7U CN202321215358U CN219942367U CN 219942367 U CN219942367 U CN 219942367U CN 202321215358 U CN202321215358 U CN 202321215358U CN 219942367 U CN219942367 U CN 219942367U
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- pipe
- flue gas
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- power plant
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000003546 flue gas Substances 0.000 title claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 67
- 239000002002 slurry Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 28
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000004537 pulping Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 21
- 238000001179 sorption measurement Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000035484 reaction time Effects 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 239000012066 reaction slurry Substances 0.000 description 8
- 238000005457 optimization Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 239000012295 chemical reaction liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- GPWDPLKISXZVIE-UHFFFAOYSA-N cyclo[18]carbon Chemical class C1#CC#CC#CC#CC#CC#CC#CC#CC#C1 GPWDPLKISXZVIE-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of flue gas purification structures, and particularly discloses flue gas purification equipment for a coal-fired power plant. The spraying mechanism can simultaneously purify various pollutants, the slurry which is not completely reacted in the sedimentation tank enters the three-way pipe from the filter screen, and is mixed with the slurry in the pulping tank, so that the waste of the slurry is reduced, the pulping pressure is reduced, the air sent into the reaction bin by the fresh air fan is opposite to the flow direction of the flue gas, the flue gas bypass can be increased, the reaction time of the flue gas in the reaction bin is prolonged, and the flue gas purification effect is enhanced.
Description
Technical Field
The utility model relates to the technical field of flue gas purification, in particular to flue gas purification equipment of a coal-fired power plant.
Background
The coal-fired power plant mainly takes coal as fuel, and the flue gas generated in the combustion process contains a large amount of acid gas which is a factor causing acid rain to form, so that the atmospheric environment is polluted, and therefore, the flue gas purification equipment is required to be used for treating the discharged flue gas in the coal-fired power plant;
the flue gas purification equipment generally uses the spray type reaction tower, and the spray type reaction tower has advantages such as reaction rapidly, and treatment effeciency is high, but the reaction solution that the reaction tower used often has the excessive condition of using, and the thick liquid that does not participate in the reaction in time is discharged into the sedimentation tank, has caused the problem of slurrying pressure increase, and the boiler burns violently sometimes, and the discharge of flue gas volume also increases thereupon, and the time of flue gas reaction also reduces to a corresponding extent in the reaction tower, and acid gas is too late and fully mixed with the reaction solution, causes the flue gas emission not up to standard.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a flue gas purifying device for a coal-fired power plant.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a coal fired power plant flue gas purification equipment, includes reaction chamber and adsorption tank, its characterized in that, reaction chamber bottom lateral wall is connected with the intake pipe, reaction chamber top lateral wall is connected with the outlet pipe, what flow in the intake pipe is boiler combustion exhaust flue gas, reaction chamber bottom is provided with the collection fill of toper structure, reaction chamber top is provided with the drainage layer, reaction chamber inside is provided with a plurality of crisscross mechanism that sprays, spray the mechanism and arrange between drainage layer and collection fill, the reaction chamber outside is provided with the fresh air machine, the draught fan entry is connected with the reaction chamber export through the tuber pipe, draught fan exit linkage chimney, the adsorption tank sets up on the tuber pipe between reaction chamber and draught fan.
Preferably, the spraying mechanism comprises a spray header, a cyclone plate and a slurry pump, the bottom of the slurry pump is connected with the upper end of a three-way pipe, the lower end of the three-way pipe is respectively connected to a pulping tank and a sedimentation tank in a penetrating way, a pipe frame is fixedly arranged above the slurry pump, the slurry pump is connected with a slurry pipe arranged on the pipe frame, the slurry pipe is provided with a plurality of outlets, each outlet of the slurry pipe is respectively fixedly connected with the upper end of the spray header, and the cyclone plate is rotationally connected to each spray header.
Preferably, the outlet of the bottom of the collecting hopper is opposite to the sedimentation tank, a chute is arranged on the side wall of the sedimentation tank, two sides of the chute are hollowed out, the chute is communicated with the three-way pipe, a filter screen is connected in the chute in a sliding way, and the upper end of the filter screen is fixedly connected with a handle.
Preferably, a float switch is arranged in the sedimentation tank, an electric valve is arranged between the three-way pipe and the connecting section of the sedimentation tank, and the electric valve is electrically connected with the float switch.
Preferably, the water filtering layer is a multi-layer water filtering net which is obliquely arranged, and the water filtering layer is arranged in front of an outlet pipe at the top of the reaction bin.
Preferably, the new fan is arranged above the pipe frame, the air pipe at the outlet of the new fan is connected with the reaction bin in a penetrating way, and the air pipe at the outlet of the new fan is inclined downwards and is arranged between the water filtering layer and the spraying mechanism.
Preferably, the inside honeycomb activated carbon that is provided with of adsorption tank, adsorption tank entry connection outlet pipe, adsorption tank exit linkage draught fan entry tuber pipe.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, by arranging the spraying mechanism and the slurry circulation, the spraying mechanism can simultaneously purify various pollutants, has the functions of temperature reduction and explosion prevention, and precipitates generated after reaction and partially incompletely reflected slurry fall into the collecting hopper and flow into the sedimentation tank, the liquid level of mixed liquid in the sedimentation tank continuously rises, after the liquid level reaches the floating ball switch, the floating ball switch works, the electric valve is opened, incompletely reacted slurry enters the three-way pipe from the filter screen and is mixed with the slurry in the pulping tank, so that the waste of the slurry is reduced, and the pulping pressure is reduced.
According to the utility model, the fresh air blower is arranged at the opposite side of the air inlet pipe, the air pipe at the outlet of the fresh air blower is connected with the reaction bin in a penetrating way, and the air pipe outlet of the fresh air blower is obliquely downward and arranged between the water filtering layer and the spraying mechanism, so that the air sent into the reaction bin by the fresh air blower is opposite to the flow direction of the flue gas, the flue gas bypass flow can be increased, the reaction time of the flue gas in the reaction bin is prolonged, and the flue gas purifying effect is enhanced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a flue gas cleaning device for a coal-fired power plant;
FIG. 2 is a schematic diagram of a spray header and a cyclone plate structure of a flue gas purification device of a coal-fired power plant;
FIG. 3 is a schematic diagram of the adsorption tank structure of the flue gas purification device of the coal-fired power plant;
FIG. 4 is a schematic diagram of a filter screen structure of a flue gas cleaning device for a coal-fired power plant;
FIG. 5 is a schematic diagram of a chute structure of a flue gas cleaning device for a coal-fired power plant;
in the figure: 1. an air inlet pipe; 101. an outlet tube; 2. a reaction bin; 3. a spraying mechanism; 4. a swirl plate; 5. a spray header; 6. a slurry pipe; 61. a pipe rack; 7. a slurry pump; 71. a three-way pipe; 8. a pulping pool; 9. a sedimentation tank; 10. a filter screen; 11. a chute; 12. a collection bucket; 13. a float switch; 14. an electric valve; 15. a fresh air machine; 16. a water filtering layer; 17. an adsorption tank; 18. honeycomb activated carbon; 19. and (5) a draught fan.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-5, a flue gas purification device for a coal-fired power plant comprises a reaction bin 2 and an adsorption tank 17, and is characterized in that an air inlet pipe 1 is connected to the side wall at the bottom of the reaction bin 2, an outlet pipe 101 is connected to the side wall at the top of the reaction bin 2, flue gas exhausted by boiler combustion flows into the air inlet pipe 1, a collection bucket 12 with a conical structure is arranged at the bottom of the reaction bin 2, a water filtering layer 16 is arranged at the top of the reaction bin 2, a plurality of staggered spraying mechanisms 3 are arranged in the reaction bin 2, the spraying mechanisms 3 are arranged between the water filtering layer 16 and the collection bucket 12, a fresh air fan 15 is arranged at the outer side of the reaction bin 2, an inlet of an induced draft fan 19 is connected with an outlet of the reaction bin 2 through an air pipe, an outlet of the induced draft fan 19 is connected with a chimney, and the adsorption tank 17 is arranged on the air pipe between the reaction bin 2 and the induced draft fan 19. The spraying mechanism 3 is common in a flue gas purification system of a coal-fired power plant, the spraying mechanism 3 can simultaneously purify various pollutants, and has the functions of cooling and explosion prevention, the purpose of arranging the water filtering layer 16 is to filter water contained in the flue gas purified by the spraying mechanism 3 in the reaction bin 2, the reacted solution and sediment are discharged out of the reaction bin 2 through the collecting hopper 12, the air fed into the reaction bin 2 by the fresh air fan 15 is opposite to the flow direction of the flue gas, the flue gas bypass can be increased, the residence time of the flue gas in the reaction bin 2 is prolonged, the flue gas purification effect is enhanced, and the adsorption tank 17 adsorbs the acid gas which is not fully reacted in the tail flue pipe, so that the discharge reaches the standard.
As a technical optimization scheme of the utility model, the spraying mechanism 3 comprises a spray header 5, a cyclone plate 4 and a slurry pump 7, the bottom of the slurry pump 7 is connected with the upper end of a three-way pipe 71, the lower end of the three-way pipe 71 is respectively connected to a pulping tank 8 and a sedimentation tank 9 in a penetrating way, a pipe frame 61 is fixedly arranged above the slurry pump 7, the outlet of the slurry pump 7 is connected with a slurry pipe 6 arranged on the pipe frame 61, the slurry pipe 6 is provided with a plurality of outlets, each outlet of the slurry pipe 6 is respectively fixedly connected with the upper end of the spray header 5, and the cyclone plate 4 is rotationally connected with each spray header 5. The slurry pump 7 conveys the reaction liquid prepared in the pulping pool 8 into the reaction bin 2, and uniformly sprays the reaction liquid into the flue gas for reaction through the cyclone plate 4 of the fan blade structure in the spraying mechanism 3, and the sedimentation tank 9 collects the reaction liquid discharged from the collecting hopper 12 and sediments generated by the reaction.
As a technical optimization scheme of the utility model, the outlet of the bottom of the collecting hopper 12 is opposite to the sedimentation tank 9, the side wall of the sedimentation tank 9 is provided with a chute 11, two sides of the chute 11 are hollowed out, the chute 11 is communicated with a three-way pipe 71, a filter screen 10 is connected in the chute 11 in a sliding way, and the upper end of the filter screen 10 is fixedly connected with a handle. The side wall of the sedimentation tank 9 is provided with an inlet of the three-way pipe 71, and the sedimentation tank 9 contains the mixture, so that the suspended mixture can be blocked in the sedimentation tank 9 by the filter screen 10, and the mixture is prevented from entering the spraying mechanism 3 to cause mechanism blockage.
As a technical optimization scheme of the utility model, a float switch 13 is arranged in the sedimentation tank 9, an electric valve 14 is arranged between the three-way pipe 71 and the connecting section of the sedimentation tank 9, and the electric valve 14 is electrically connected with the float switch 13. The spraying mechanism 3 normally uses the reaction liquid in the pulping tank 8, the sedimentation tank 9 is used as a container for recycling, the reaction liquid which is not reacted in the tank can be used after being accumulated to a certain degree, and the floating ball switch 13 can open the electric valve 14 when the liquid level is high, so as to assist in pulping.
As a technical optimization scheme of the utility model, the water filtering layer 16 is a multi-layer water filtering net which is obliquely arranged, and the water filtering layer 16 is arranged in front of the outlet pipe 101 at the top of the reaction bin 2. The inclined lamination of the water filtering layers 16 is beneficial to the contact of the flue gas and the water filtering net therein, and the water filtering effect is enhanced.
As a technical optimization scheme of the utility model, the fresh air fan 15 is arranged above the pipe frame 61, an outlet air pipe of the fresh air fan 15 is connected with the reaction bin 2 in a penetrating way, and an outlet air pipe of the fresh air fan 15 is inclined downwards and is arranged between the water filtering layer 16 and the spraying mechanism 3. The air fed into the reaction bin 2 by the fresh air fan 15 is opposite to the flow direction of the flue gas, and the outlet is arranged above the spraying mechanism 3, so that the flue gas bypass flow can be increased, the reaction time of the flue gas in the reaction bin 2 can be prolonged, and the flue gas purifying effect can be enhanced.
As a technical optimization scheme of the utility model, the inside of the adsorption tank 17 is provided with honeycomb activated carbon 18, the inlet of the adsorption tank 17 is connected with an outlet pipe 101, and the outlet of the adsorption tank 17 is connected with an inlet air pipe of an induced draft fan 19. Although the spraying mechanism 3 is arranged to purify the flue gas, a small amount of harmful gases which are not fully reacted still exist in the tail air pipe, and when the gases flow through the honeycomb activated carbon 18 in the adsorption tank 17, the gases are adsorbed by the honeycomb activated carbon 18 so as to improve the environmental protection index of the discharged flue gas.
When the utility model is used, flue gas containing harmful substances such as acid gas and the like generated by combustion of the coal-fired boiler is discharged out of the boiler and enters the reaction bin 2 from the air inlet pipe 1, the slurry pump 7 pumps the reaction slurry prepared in the pulping tank 8 to each slurry pipe 6 and evenly distributes the reaction slurry to each spray header 5 which is distributed in a staggered way, the reaction slurry firstly passes through the cyclone plate 4 in the falling process of the reaction slurry from the spray headers 5, the reaction slurry is spirally dispersed under the action of the fan blade structure of the cyclone plate 4 and sprayed to the reaction bin 2, a plurality of groups of spray headers 5 cover the whole reaction bin 2, as the falling direction of the reaction slurry is opposite to the flowing direction of the flue gas, when the reaction slurry and the reaction slurry are contacted with each other, neutralization reaction occurs, and sediment generated after the reaction and partially incompletely reflected slurry fall to the collecting hopper 12, in the sedimentation tank 9, the liquid level of the mixed liquid continuously rises in the sedimentation tank 9, after the liquid level reaches the floating ball switch 13, the floating ball switch 13 works, the electric valve 14 is opened, the incompletely reacted slurry enters the three-way pipe 71 from the filter screen 10 and is mixed with the slurry in the pulping tank 8, the slurry is recycled, after the liquid level drops to a specified position, the electric valve 14 is closed, the humidity of the reacted flue gas is increased, moisture carried in the flue gas can be filtered when the flue gas flows through the water filtering layer 16, then the flue gas enters the adsorption tank 17 from the air pipe at the outlet of the reaction bin 2, a small amount of incompletely reacted harmful gas exists in the air pipe at the tail part, and the harmful gas is adsorbed by the honeycomb activated carbon 18 so as to improve the environmental protection index of the discharged flue gas, and finally, the treated clean gas is discharged to the atmosphere from the outlet of the induced draft fan 19.
When the boiler combustion is enhanced, the generated smoke volume can be increased, and the reaction of the smoke in the reaction bin 2 is insufficient, so that the fresh air fan 15 is arranged, the air fed into the reaction bin 2 by the fresh air fan 15 is opposite to the flow direction of the smoke, and the outlet is arranged above the spraying mechanism 3, so that the smoke bypass flow can be increased, the reaction time of the smoke in the reaction bin 2 is prolonged, and the smoke purification effect is enhanced.
The filter screen 10 on the side wall of the sedimentation tank 9 is in sliding connection with the chute 11, after the upper slurry is extracted, the bottom mixed sediment can be cleaned timely, whether the filter screen 10 is blocked or not is checked, if the filter screen 10 is blocked, a handle at the upper end of the filter screen 10 can be directly pulled, the filter screen 10 is pulled out, the new chute 11 is replaced, the operation is rapid and simple, the filter screen 10 can be used for mixing the sediment, and the problem of blocking of the spraying mechanism 3 is caused.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The utility model provides a coal fired power plant flue gas purification equipment, including reaction chamber (2) and adsorption tank (17), a serial communication port, reaction chamber (2) bottom lateral wall is connected with intake pipe (1), reaction chamber (2) top lateral wall is connected with outlet pipe (101), what flow in intake pipe (1) is boiler combustion exhaust flue gas, reaction chamber (2) bottom is provided with conical structure's collection fill (12), reaction chamber (2) top is provided with drainage layer (16), reaction chamber (2) inside is provided with a plurality of staggered distribution spraying mechanism (3), spraying mechanism (3) are arranged between drainage layer (16) and collection fill (12), reaction chamber (2) outside is provided with new fan (15), draught fan (19) entry is connected with reaction chamber (2) export through the tuber pipe, draught fan (19) exit linkage chimney, adsorption tank (17) set up on the tuber pipe between reaction chamber (2) and draught fan (19).
2. The flue gas purification device of the coal-fired power plant according to claim 1, wherein the spraying mechanism (3) comprises a spraying head (5), a cyclone plate (4) and a slurry pump (7), the bottom of the slurry pump (7) is connected with the upper end of a three-way pipe (71), the lower end of the three-way pipe (71) is respectively connected to a pulping tank (8) and a sedimentation tank (9) in a penetrating way, a pipe frame (61) is fixedly installed above the slurry pump (7), an outlet of the slurry pump (7) is connected with a slurry pipe (6) arranged on the pipe frame (61), the slurry pipe (6) is provided with a plurality of outlets, each outlet of the slurry pipe (6) is respectively fixedly connected with the upper end of the spraying head (5), and the cyclone plate (4) is rotationally connected with each spraying head (5).
3. The flue gas purification equipment of the coal-fired power plant according to claim 2, wherein the outlet of the bottom of the collecting hopper (12) is opposite to the sedimentation tank (9), a chute (11) is arranged on the side wall of the sedimentation tank (9), two sides of the chute (11) are hollowed out, the chute (11) is communicated with a three-way pipe (71), a filter screen (10) is connected in the chute (11) in a sliding manner, and a handle is fixedly connected to the upper end of the filter screen (10).
4. The flue gas purification device of the coal-fired power plant according to claim 2, wherein a float switch (13) is arranged in the sedimentation tank (9), an electric valve (14) is arranged between the connecting section of the three-way pipe (71) and the sedimentation tank (9), and the electric valve (14) is electrically connected with the float switch (13).
5. The flue gas purification device for the coal-fired power plant according to claim 1, wherein the water filtering layer (16) is a multi-layer water filtering net which is obliquely arranged, and the water filtering layer (16) is arranged in front of an outlet pipe (101) at the top of the reaction bin (2).
6. The flue gas purification device of the coal-fired power plant according to claim 2, wherein the fresh air fan (15) is arranged above the pipe frame (61), an outlet air pipe of the fresh air fan (15) is connected to the reaction bin (2) in a penetrating manner, and an outlet air pipe of the fresh air fan (15) is inclined downwards and is arranged between the water filtering layer (16) and the spraying mechanism (3).
7. The flue gas purification device of the coal-fired power plant according to claim 1, wherein the adsorption tank (17) is internally provided with honeycomb activated carbon (18), an inlet of the adsorption tank (17) is connected with an outlet pipe (101), and an outlet of the adsorption tank (17) is connected with an inlet air pipe of an induced draft fan (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321215358.7U CN219942367U (en) | 2023-05-19 | 2023-05-19 | Flue gas purifying equipment for coal-fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321215358.7U CN219942367U (en) | 2023-05-19 | 2023-05-19 | Flue gas purifying equipment for coal-fired power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219942367U true CN219942367U (en) | 2023-11-03 |
Family
ID=88541091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321215358.7U Active CN219942367U (en) | 2023-05-19 | 2023-05-19 | Flue gas purifying equipment for coal-fired power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219942367U (en) |
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2023
- 2023-05-19 CN CN202321215358.7U patent/CN219942367U/en active Active
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