CN219836342U - Flue gas denitration reactor - Google Patents
Flue gas denitration reactor Download PDFInfo
- Publication number
- CN219836342U CN219836342U CN202321157965.2U CN202321157965U CN219836342U CN 219836342 U CN219836342 U CN 219836342U CN 202321157965 U CN202321157965 U CN 202321157965U CN 219836342 U CN219836342 U CN 219836342U
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- CN
- China
- Prior art keywords
- flue gas
- filter screen
- fixed connection
- cleaning plate
- ash bucket
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000003546 flue gas Substances 0.000 title claims abstract description 88
- 239000000428 dust Substances 0.000 claims abstract description 71
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 230000008676 import Effects 0.000 claims description 20
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 239000002956 ash Substances 0.000 abstract description 18
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000010881 fly ash Substances 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a flue gas denitration reactor, which belongs to the field of denitration reactors and comprises an SCR reactor, wherein a pretreatment mechanism is arranged, when flue gas enters the SCR reactor through a flue gas inlet for denitration treatment, a coarse dust removing filter screen and a fine dust removing filter screen in a filter frame arranged front and back in the flue gas inlet are used for filtering and blocking larger and smaller fly ash particles in the flue gas, meanwhile, a driving motor drives a screw rod to rotate through a rotating rod at a driving output end, a cleaning plate is enabled to move back and forth between the filter frames along the screw rod through a threaded hole, dust filtered on the coarse dust removing filter screen and the fine dust removing filter screen is cleaned through a cleaning brush, so that the filtering effect and the smoke inlet flow of the coarse dust removing filter screen and the fine dust removing filter screen on the flue gas are ensured, the cleaned dust falls into an ash bucket, and the dust in the ash bucket is discharged through a dust discharging pipe, so that dust carried in the flue gas is pretreated through the pretreatment mechanism.
Description
Technical Field
The utility model relates to the field of denitration reactors, in particular to a flue gas denitration reactor.
Background
Along with the increasing strictness of the national environmental protection policy, the NOx requirements on the boiler emissions are higher and higher, so that the tail part of the boiler flue is generally additionally provided with a flue gas denitration reactor to reduce the NOx emissions, the current common flue gas denitration reactor is provided with an SCR reactor, a flue gas emission outlet of the boiler economizer is connected with the SCR reactor, NH3 is adopted as a reducing agent to remove nitrogen oxides in the flue gas, ammonia is added to the SCR reactor provided with a catalyst, and nitrogen oxide components are catalytically reduced into nitrogen so as to achieve the aim of environmental protection.
In the prior art, in the using process of the traditional flue gas denitration reactor, because the flue gas is not treated before entering the flue gas denitration reactor, and the flue gas contains a large amount of fly ash, the phenomenon that the flue gas denitration reactor is laminated with ash and the catalyst pore canal is blocked after a period of operation can occur, so that the service life of the catalyst can be reduced, and the catalytic effect of the catalyst is also reduced.
Disclosure of Invention
The utility model mainly aims to provide a flue gas denitration reactor which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a flue gas denitration reactor, includes the SCR reactor, the front end top of SCR reactor is equipped with the flue gas import, and the rear end bottom of SCR reactor is equipped with the clean cigarette export, the inside of flue gas import is equipped with pretreatment mechanism, and pretreatment mechanism includes ash bucket, valve, dust exhaust pipe, filter frame, coarse dust removal filter screen, fine dust removal filter screen, lead screw, driving motor, cleaning plate and clearance brush, ash bucket fixed connection is in the bottom of flue gas import, and valve fixed connection is in the bottom of ash bucket, dust exhaust pipe fixed connection is in the bottom of valve, the inside fixedly connected with of flue gas import a set of fore-and-aft symmetry's filter frame, and coarse dust removal filter screen fixed connection is in the filter frame in the place ahead, fine dust removal filter screen fixed connection is in the filter frame at the rear, the lead screw passes through the dwang swing joint at both ends in the flue gas import and is located between the filter frame, and driving motor fixed connection is on the outer wall right side of flue gas import, driving motor's output and dwang fixed connection, the cleaning plate passes through screw hole and swing joint on the lateral wall and the brush both sides of cleaning plate.
Preferably, the bottom surface of flue gas import has seted up the opening, and the inside top surface of flue gas import has seted up T type sliding tray, still seted up the rotation hole on the inside left and right sides wall of flue gas import respectively.
Preferably, the ash bucket is fixedly arranged on the bottom surface of the flue gas inlet and positioned below the through hole, a valve is fixedly arranged at the bottom end of the ash bucket, and a dust exhaust pipe is fixedly arranged at the bottom end of the valve.
Preferably, a group of filter frames which are in a front-back symmetrical shape are fixedly arranged in the flue gas inlet, a coarse dust removal filter screen is fixedly arranged in the filter frame in front, and a fine dust removal filter screen is fixedly arranged in the filter frame in back.
Preferably, the left end and the right end of the screw rod are respectively and fixedly provided with a rotating rod, the rotating rods are movably arranged in the rotating holes, the right side of the outer wall of the flue gas inlet is fixedly provided with a driving motor, and the output end of the driving motor is fixedly arranged with the rotating rods at the right end.
Preferably, the side wall of the cleaning plate is provided with a threaded hole, the cleaning plate is in threaded connection with the screw rod through the threaded hole, the top surface of the cleaning plate is fixedly provided with a T-shaped sliding block, the T-shaped sliding block is movably arranged in the T-shaped sliding groove, and the front side and the rear side of the cleaning plate are respectively and fixedly provided with a cleaning hairbrush.
Compared with the prior art, the utility model has the following beneficial effects:
according to the pretreatment mechanism, before flue gas enters the SCR reactor through the flue gas inlet to be subjected to denitration treatment, the coarse dust removing filter screen and the fine dust removing filter screen in the filter frame arranged front and back in the flue gas inlet are used for filtering and blocking larger and smaller fly ash particles in the flue gas, meanwhile, the driving motor drives the driving output end to rotate through the rotating rod, the cleaning plate moves back and forth between the filter frames along the screw rod through the screw hole, dust filtered on the coarse dust removing filter screen and the fine dust removing filter screen is cleaned through the cleaning brush, so that the filtering effect and the flue gas inlet flow of the coarse dust removing filter screen and the fine dust removing filter screen on the flue gas are ensured, the cleaned dust falls into the dust hopper, and the valve can be opened to discharge the dust in the dust hopper through the dust discharging pipe, so that the phenomenon of catalyst lamination dust and catalyst blocking hole can be avoided after the dust carried in the flue gas is pretreated through the pretreatment mechanism, and the service life and the catalytic effect of the catalyst are further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a flue gas inlet of the present utility model;
fig. 3 is a schematic view of the pretreatment mechanism of the present utility model in a structural separation.
In the figure: 1. an SCR reactor; 2. a flue gas inlet; 3. a smoke purifying outlet; 4. a pretreatment mechanism; 5. a through port; 6. a T-shaped sliding groove; 7. a rotation hole; 8. an ash bucket; 9. a valve; 10. a dust exhaust pipe; 11. a filter frame; 12. a coarse dust removal filter screen; 13. fine dust removal filter screen; 14. a screw rod; 15. a rotating lever; 16. a driving motor; 17. a cleaning plate; 18. a threaded hole; 19. a T-shaped sliding block; 20. cleaning the hairbrush.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1-3, a flue gas denitration reactor comprises an SCR reactor 1, a flue gas inlet 2 is arranged at the top of the front end of the SCR reactor 1, a clean flue gas outlet 3 is arranged at the bottom of the rear end of the SCR reactor 1, a pretreatment mechanism 4 is arranged in the flue gas inlet 2, the pretreatment mechanism 4 comprises an ash bucket 8, a valve 9, a dust exhaust pipe 10, a filter frame 11, a coarse dust removal filter screen 12, a fine dust removal filter screen 13, a screw rod 14, a driving motor 16, a cleaning plate 17 and a cleaning brush 20, the ash bucket 8 is fixedly connected to the bottom of the flue gas inlet 2, the valve 9 is fixedly connected to the bottom of the ash bucket 8, the dust exhaust pipe 10 is fixedly connected to the bottom of the valve 9, a group of filter frames 11 which are symmetrical front and rear are fixedly connected to the inside of the flue gas inlet 2, the fine dust removal filter screen 13 is fixedly connected to the filter frames 11 in the rear, the screw rod 14 is movably connected to the filter frames 2 through rotating rods 15 at two ends and is positioned between the filter frames 11, the driving motor 16 is fixedly connected to the outer wall of the motor 16 at the side of the outer wall of the flue gas inlet 2, the cleaning plate 17 is fixedly connected to the cleaning plate 17 at two sides of the side walls of the cleaning plate 17, and the cleaning brush 17 is fixedly connected to the side walls of the cleaning plate 18.
As shown in fig. 1-3, in this embodiment, in order to prevent the phenomenon that catalyst layer ash and catalyst pore blocking occur after the flue gas is denitrated by the SCR reactor 1 through the pretreatment mechanism 4, the bottom surface of the flue gas inlet 2 is provided with a through hole 5, the inside top surface of the flue gas inlet 2 is provided with a T-shaped sliding groove 6, the left and right side walls of the inside of the flue gas inlet 2 are also provided with rotating holes 7 respectively, an ash bucket 8 is fixedly installed on the bottom surface of the flue gas inlet 2 and below the through hole 5, the bottom end of the ash bucket 8 is fixedly provided with a valve 9, the bottom end of the valve 9 is fixedly provided with a dust discharging pipe 10, the inside of the flue gas inlet 2 is fixedly provided with a group of front and rear symmetrical filter frames 11, the inside of the front filter frame 11 is fixedly provided with a coarse dust removing filter screen 12, the inside of the rear filter frame 11 is fixedly provided with a fine dust removing filter screen 13, the left and right ends of the screw rod 14 are respectively fixedly provided with rotating rods 15, the rotating rods 15 are movably installed in the rotating holes 7, the right side wall of the flue gas inlet 2 is also fixedly provided with a motor 16, the right side wall of the flue gas inlet 2 is also provided with a cleaning plate 16, the cleaning plate 17 is fixedly installed with a T-shaped sliding plate 17, the cleaning plate 17 is fixedly installed on the two side walls of the T-shaped sliding plate 17, and the cleaning plate 17 is fixedly installed on the top surface of the T-shaped filter frame 17, and the cleaning plate is fixedly installed on the front side of the front side wall 17, and the cleaning plate is fixedly connected with a cleaning plate 17, and the cleaning plate is fixedly installed on the front and is fixedly mounted on the front and is provided with a cleaning plate 17;
the specific principle of use of the pretreatment mechanism 4 in combination with the SCR reactor 1 is as follows: when flue gas enters the SCR reactor 1 through the flue gas inlet 2 for denitration treatment, the flue gas firstly passes through the filter frame 11 arranged at the front part in the flue gas inlet 2, at the moment, the coarse dust filter screen 12 arranged in the filter frame 11 adsorbs and filters larger dust particles in the flue gas, and when the flue gas filtered by the coarse dust filter screen 12 enters the SCR reactor 1 through the filter frame 11 arranged at the rear part in the flue gas inlet 2, the fine dust filter screen 13 arranged in the filter frame 11 at the rear part adsorbs and filters smaller dust particles in the flue gas, so that the problems that dust particles enter the SCR reactor 1 to cause dust accumulation and blocking of a catalyst layer and a catalyst pore channel can be avoided, and in order to ensure that the coarse dust filter screen 12 and the fine dust filter screen 13 can continuously and effectively filter the flue gas, the driving motor 16 arranged on the outer wall of the right side of the flue gas inlet 2 can be started, the driving motor 16 drives the output end to rotate and drives the rotating rods 15 at the left end and the right end of the screw rod 14 to rotate in the rotating holes 7 formed on the left side wall and the right side wall of the interior of the flue gas inlet 2 through the output end, and the screw rod 14 is driven to rotate by the rotating rods 15, at this time, the cleaning plate 17 transversely moves back and forth between the filter frames 11 along the screw rod 14 through the threaded holes 18 when the screw rod 14 rotates because the cleaning plate 17 is connected with the screw rod 14 through the threaded holes 18 formed on the side walls, the T-shaped sliding blocks 19 arranged on the top surface of the cleaning plate 17 slide in the T-shaped sliding grooves 6 formed on the inner top surface of the flue gas inlet 2 during the movement, meanwhile, the cleaning brushes 20 arranged on the front side and the rear side of the cleaning plate 17 clean the coarse dust removing filter screen 12 and the fine dust removing filter screen 13 during the movement of the cleaning plate 17, and clean up the dust particulate matter that filters down on coarse dust removal filter screen 12 and the fine dust removal filter screen 13 and fall into ash bucket 8 through opening 5 that the bottom surface of flue gas import 2 was seted up to this places that the mesh of coarse dust removal filter screen 12 and fine dust removal filter screen 13 appears blockking up and influences filter effect and advance the cigarette flow, finally, can regularly open ash bucket 8 and discharge the dust particulate matter that collects in the ash bucket 8 through valve 9.
The foregoing is only illustrative of the preferred embodiments of the present utility model and, although the present utility model has been described in detail with reference to the foregoing embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and equivalents of the features may be substituted for elements thereof without departing from the true spirit and scope of the utility model.
Claims (6)
1. The utility model provides a flue gas denitration reactor, includes SCR reactor (1), the front end top of SCR reactor (1) is equipped with flue gas import (2), and the rear end bottom of SCR reactor (1) is equipped with clean cigarette export (3), its characterized in that: the inside of flue gas import (2) is equipped with pretreatment mechanism (4), and pretreatment mechanism (4) including ash bucket (8), valve (9), dust exhaust pipe (10), filter frame (11), coarse dust removal filter screen (12), fine dust removal filter screen (13), lead screw (14), driving motor (16), clearance board (17) and clearance brush (20), ash bucket (8) fixed connection is in the bottom of flue gas import (2), and valve (9) fixed connection is in the bottom of ash bucket (8), dust exhaust pipe (10) fixed connection is in the bottom of valve (9), the inside fixed connection of flue gas import (2) has a set of filter frame (11) of fore-and-aft symmetry, and coarse dust removal filter screen (12) fixed connection is in filter frame (11) in the place ahead, fine dust removal filter screen (13) fixed connection is in filter frame (11) in the back, lead screw (14) are through dwang (15) swing joint at both ends in flue gas import (2) and are located between filter frame (11), and driving motor (16) fixed connection is in the outer wall (16) of flue gas import (2) and clearance board (16) and the screw hole (14) that the side is fixed connection is through the screw hole (16), and the cleaning brushes (20) are fixedly connected to the two sides of the cleaning plate (17).
2. A flue gas denitrification reactor according to claim 1, wherein: the bottom surface of flue gas import (2) has seted up through-hole (5), and T sliding tray (6) have been seted up to the inside top surface of flue gas import (2), still seted up rotation hole (7) on the inside left and right sides wall of flue gas import (2) respectively.
3. A flue gas denitrification reactor according to claim 2, wherein: the ash bucket (8) is fixedly arranged on the bottom surface of the flue gas inlet (2) and is positioned below the through hole (5), the bottom end of the ash bucket (8) is fixedly provided with a valve (9), and the bottom end of the valve (9) is fixedly provided with a dust exhaust pipe (10).
4. A flue gas denitrification reactor according to claim 3, wherein: the inside fixed mounting of flue gas import (2) has a set of front and back symmetry form filter frame (11), the place ahead filter frame (11) in frame fixed mounting have coarse dust removal filter screen (12), and the frame internal fixation of rear filter frame (11) has fine dust removal filter screen (13).
5. A flue gas denitrification reactor according to claim 4, wherein: the left end and the right end of the screw rod (14) are respectively and fixedly provided with a rotating rod (15), the rotating rods (15) are movably arranged in the rotating holes (7), the right side of the outer wall of the flue gas inlet (2) is fixedly provided with a driving motor (16), and the output end of the driving motor (16) is fixedly arranged with the rotating rods (15) at the right end.
6. A flue gas denitrification reactor according to claim 5, wherein: the side wall of the cleaning plate (17) is provided with a threaded hole (18), the cleaning plate (17) is in threaded connection with the screw rod (14) through the threaded hole (18), the top surface of the cleaning plate (17) is fixedly provided with a T-shaped sliding block (19), the T-shaped sliding block (19) is movably arranged in the T-shaped sliding groove (6), and the front side and the rear side of the cleaning plate (17) are respectively and fixedly provided with a cleaning hairbrush (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157965.2U CN219836342U (en) | 2023-05-15 | 2023-05-15 | Flue gas denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157965.2U CN219836342U (en) | 2023-05-15 | 2023-05-15 | Flue gas denitration reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219836342U true CN219836342U (en) | 2023-10-17 |
Family
ID=88304480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321157965.2U Active CN219836342U (en) | 2023-05-15 | 2023-05-15 | Flue gas denitration reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219836342U (en) |
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2023
- 2023-05-15 CN CN202321157965.2U patent/CN219836342U/en active Active
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