CN220176531U - Catalyst mechanical ash removal anti-blocking device - Google Patents
Catalyst mechanical ash removal anti-blocking device Download PDFInfo
- Publication number
- CN220176531U CN220176531U CN202320839934.9U CN202320839934U CN220176531U CN 220176531 U CN220176531 U CN 220176531U CN 202320839934 U CN202320839934 U CN 202320839934U CN 220176531 U CN220176531 U CN 220176531U
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- China
- Prior art keywords
- catalyst
- frame
- fixedly connected
- ash removal
- metal wire
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- 239000003054 catalyst Substances 0.000 title claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 239000011148 porous material Substances 0.000 claims abstract description 29
- 239000004071 soot Substances 0.000 claims abstract description 28
- 238000007790 scraping Methods 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 10
- 238000005299 abrasion Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003546 flue gas Substances 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000005457 optimization Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 240000007643 Phytolacca americana Species 0.000 description 1
- 235000009074 Phytolacca americana Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to a mechanical ash removal anti-blocking device for a catalyst, which comprises a frame and a driving device for driving the frame to move up and down, wherein a metal wire mesh is fixedly connected to the frame, a plurality of metal wires which vertically extend into a catalyst pore canal are fixedly connected to the metal wire mesh, a plurality of ash scraping rings are fixedly connected to the metal wire mesh, the included angle between every two adjacent ash scraping rings is 90 degrees, the driving device drives the frame to move up and down so as to drive the metal wires to move up and down, the metal wires move up and down in the catalyst pore canal, and after ash loosens, the metal wires are taken away along with flue gas or blown away by a soot blower, thereby realizing mechanical ash removal in the catalyst pore canal, and the diameters of the metal wires and the metal wire mesh for fixing the metal wires are small, do not influence the distribution of flue gas flow fields of SCR (selective catalytic reduction) and do not influence the flow of flue gas in the catalyst pore canal, so the ash accumulation tendency is not increased basically, and the condition of blocking of catalyst dust can be effectively avoided.
Description
Technical Field
The utility model relates to the field of flue gas treatment, in particular to a mechanical ash-removing and anti-blocking device for a catalyst.
Background
The denitration catalyst types can be classified into three types: the plate type, honeycomb type and corrugated plate type common catalyst modules are formed by splicing a plurality of catalyst units, a plurality of catalyst pore channels are formed in the catalyst units, and the flue gas passes through the catalyst pore channels to realize the catalysis.
In the occasion of high flue gas dust content, the pore canal of the catalyst is easy to be blocked. In terms of ash blocking prevention, common means are: and (3) increasing the hole distance of the catalyst, and using a rake soot blower. Even with 11-hole catalysts, the rake sootblowers now use dense nozzles, which can be prone to catalyst dust blockage.
The mechanical ash removal mode is the ash removal mode with the strongest capability, and the mechanical ash removal mode suitable for the catalyst structure is designed, so that the problem of catalyst blockage can be solved.
Disclosure of Invention
The utility model provides a mechanical ash-removing and anti-blocking device for a catalyst aiming at the defects of the prior art.
The utility model provides a mechanical ash removal anti-blocking device for a catalyst, which comprises a frame and a driving device for driving the frame to move up and down, wherein a plurality of metal wires which vertically extend into a catalyst pore canal are fixedly connected on the frame.
The driving device in the scheme drives the frame to move up and down so as to drive the metal wire to move up and down, the metal wire moves up and down in the catalyst pore canal to scrape ash, and after the ash loosens, the metal wire is taken away along with flue gas or blown away by a soot blower.
As optimization, the frame is fixedly connected with a wire mesh, and the wire is connected with the wire mesh. In the scheme, the metal wires are connected through the metal wire mesh, and the metal wire mesh is small in diameter, large in mesh and moving frequently, and the position is close to the soot blower, so that the metal wire mesh does not increase the dust accumulation tendency.
As optimization, a plurality of ash scraping rings are fixedly connected to the metal wire, the ash scraping rings are coplanar with the metal wire, and the included angle between every two adjacent ash scraping rings is 90 degrees. The ash scraping area can be enlarged by the ash scraping ring fixed on the metal wire. The included angle between the adjacent ash scraping rings is 90 degrees, so that ash scraping is more comprehensive.
As optimization, the inlet and outlet of the catalyst pore canal are hardened or a protecting cover is added, so that the abrasion of the metal wire to the catalyst is reduced.
As optimization, the device also comprises a metal wire poking rod fixedly connected to the rake soot blower, and the end part of the metal wire extends to the moving path of the metal wire poking rod. In this scheme, the wire poking rod on the rake soot blower follows the transverse movement of the rake soot blower, pokes the end part of the wire, forms vibration, and strengthens the ash removal.
As optimization, the device also comprises a fixed guide rod, and the frame is fixedly connected with a guide sleeve sleeved on the guide rod. The guide sleeve in the scheme is sleeved on the guide rod, so that the guide in the lifting process of the frame is realized.
As optimization, the driving device comprises a collision block fixedly connected to the rake soot blower and a chute fixedly connected to the frame, wherein the chute is provided with an inclined plane positioned on the moving path of the collision block, and the driving device further comprises a spring for driving the frame to reset. In this scheme, when the rake soot blower transversely moves, through the bump contact angle iron, thereby push down the angle iron and realize the downmovement of frame, realize the reset through the spring to the up-and-down movement of frame has been realized.
As optimization, the collision block is provided with a roller matched with the inclined plane. The gyro wheel and the inclined plane contact that set up in this scheme reduce frictional force.
As optimization, the driving device comprises a rotating shaft, a steel wire rope wheel fixedly connected to the rotating shaft, a steel wire rope on the steel wire rope wheel is connected with the frame, and the driving device further comprises a spring for driving the frame to reset. The rotating shaft in the scheme drives the steel wire rope wheel to rotate, so that the frame is pulled to move, and the spring is reset.
The beneficial effects of the utility model are as follows: according to the mechanical ash removal anti-blocking device for the catalyst, the driving device drives the frame to move up and down, so that the metal wire is driven to move up and down in the catalyst pore canal to scrape ash, after the ash is loosened, the metal wire is taken away along with flue gas or blown away by the soot blower, so that mechanical ash removal in the catalyst pore canal is realized, the diameters of the metal wire and the metal wire mesh for fixing the metal wire are small, the distribution of SCR flue gas flow fields is not influenced, the flow of flue gas in the catalyst pore canal is not influenced, and therefore, the ash accumulation tendency is not increased basically, and the situation of blocking of catalyst dust can be avoided effectively.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with the present utility model;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present utility model;
FIG. 4 is a top view of a catalyst unit and wire mesh of the present utility model;
the figure shows:
1. the device comprises a catalyst unit 2, a catalyst pore canal 3, a catalyst module frame 4, a metal wire 5, a dust scraping ring 6, a frame 7, a metal wire net 8, a guide sleeve 9, a guide rod 10, a spring 11, a rake soot blower 12, a collision block 13, a wedge iron 14, a metal wire poking rod 15, a rotating shaft 16, a steel wire rope pulley 17 and a steel wire rope.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Example 1:
as shown in fig. 1 to 4, the mechanical ash removal and blocking prevention device for a catalyst of the present utility model includes a frame 6 and a driving device for driving the frame 6 to move up and down, where the frame 6 may be disposed above the catalyst unit 1 or may be disposed below the catalyst unit 1, and in this embodiment, the frame 6 is disposed above the catalyst unit 1.
The catalyst module in the prior art is formed by splicing a plurality of catalyst units 1, the outside is fixed through a catalyst module frame 3, the catalyst modules are spliced in the use process, and the spliced position is sealed through a sealing stop iron and a sealing strip. The catalyst unit 1 is provided with densely distributed vertical catalyst pore channels 2, and flue gas passes through the catalyst pore channels 2 to realize catalysis, so that the blockage occurs in the catalyst pore channels 2.
The catalyst module comprises a catalyst module frame 3, and is characterized by further comprising a fixed guide rod 9, wherein the guide rod 9 is vertically fixed at the upper end of the catalyst module frame 3, a guide sleeve 8 sleeved on the guide rod 9 is fixedly connected to the frame 6, and a plurality of guide rods 9 and guide sleeves 8 are arranged, so that the guide of the up-and-down movement of the frame 6 is realized.
A plurality of metal wires 4 extending vertically into the catalyst pore channels 2 are fixedly connected to the frame 6, and the metal wires 4 in the embodiment are steel wires. Temperature resistant hard filaments may also be used. Since the frame 6 is disposed above the catalyst unit 1 in this embodiment, the wires 4 extend downward into the catalyst channels 2, and when the frame 6 moves up and down, the wires 4 move up and down in the catalyst channels 2.
As shown in fig. 4, in order to realize connection between the metal wire 4 and the frame 6, the frame 6 is fixedly connected with a metal wire mesh 7, in this embodiment, the metal wire mesh 7 is a steel wire mesh, the metal wire mesh 7 is transversely fixed on the lower end surface of the frame 6, the metal wire 4 is connected to the metal wire mesh 7, the metal wire mesh is consistent with the size of the catalyst hole, and the metal wire mesh moves frequently and is positioned close to a soot blower, so that the metal wire mesh does not increase the soot deposition tendency.
The metal wire 4 is fixedly connected with a plurality of ash scraping rings 5, and the ash scraping rings 5 are elliptic thin metal wires and are welded on the metal wire 4, so that the distribution of SCR flue gas flow fields is not influenced, and the flue gas flow in a catalyst pore canal is not influenced.
The inlet and outlet of the catalyst pore canal are hardened or a protecting cover is added, so that abrasion of metal wires to the catalyst is reduced, the inlet and outlet of the catalyst pore canal are hardened during hardening treatment, the hardness is improved, and the protecting cover is added to attach and protect the catalyst around the catalyst pore canal at the inlet and outlet positions, so that the catalyst is prevented from being abraded.
The part of the ash scraping ring 5 is positioned above the catalyst pore canal 2, so that the part of the ash scraping ring 5 can pass through the upper opening of the catalyst pore canal 2 when moving up and down, the ash scraping ring 5 is coplanar with the metal wires 4, and the included angle between the adjacent ash scraping rings 5 is 90 degrees, so that ash scraping is more comprehensive. The ash scraping ring 5 can also be designed into a brush shape, a spiral shape and the like.
The rake soot blower 11 is the prior art, and the realization soot blowing is transversely moved above the frame, still includes the wire poking rod 14 of rigid coupling on the rake soot blower 11, and wire poking rod 14 level sets up, on the tip of wire 4 extends to the travel path of wire poking rod 14, upwards extends to being higher than frame 6 after wire 7 is passed to wire 4 upper end in this embodiment to stir wire 4 tip when wire poking rod follows rake soot blower 11 lateral movement, forms the vibration, strengthens the deashing.
The driving device comprises a collision block 12 fixedly connected to the rake soot blower 11 and a chute 13 fixedly connected to the frame 6, wherein the chute 13 is provided with an inclined plane positioned on the moving path of the collision block 12, and the collision block 12 is provided with a roller matched with the inclined plane.
The driving device further comprises a spring 10 for driving the frame 6 to reset, and the spring 10 drives the frame 6 to reset upwards because the iron 13 is pressed downwards by the collision block 12 in the embodiment, and the spring 10 is sleeved on the guide rod 9 in the embodiment.
In order to prevent the display from being unclear due to excessive lines, the internal structure of the catalyst unit 1 and the structure of the wires 4 and the like are displayed only at both ends in the present utility model.
The application method of the utility model comprises the following steps:
the rake soot blower 11 transversely moves above the frame to realize soot blowing, when the rake soot blower 11 transversely moves, the rollers on the collision blocks 12 press down the inclined iron 13 to enable the frame 6 to move downwards, and after the inclined iron 13 is avoided by the rollers on the collision blocks 12, the frame 6 is reset upwards under the action of the springs, so that the frame is driven to move up and down during soot blowing, the metal wires 4 move up and down in the catalyst pore channels 2, and soot cleaning is realized through the soot scraping rings 5.
When the catalyst is stopped for manual ash removal, the frame is connected with the guide post, the frame is lifted up, the frame moves up and down greatly and vibrates, and ash in the catalyst pore canal can be effectively scraped by matching with air pipe blowing.
The catalyst module with the mechanical ash removal and blocking prevention device of the catalyst is directly arranged in a boiler smoke box, ammonia gas is mixed in the smoke gas and enters the catalyst, and the ammonia gas and NOX are catalytically reacted on the surface of the catalyst. The catalyst module with the mechanical ash removal and blockage prevention device for the catalyst can not block ash and keep the flow of flue gas, so that the operation of the boiler can not be influenced. By the arrangement, a denitration tower can be not built any more, the size is compact, the resistance can be reduced, and the heat dissipation area is reduced.
The above-described device is of course also applicable to various catalysts.
Example 2:
as shown in fig. 4, the driving device comprises a rotating shaft 15, a steel wire rope wheel 16 fixedly connected to the rotating shaft 15, a steel wire rope 17 on the steel wire rope wheel 16 is connected with the frame 6, and a spring 10 for driving the frame 6 to reset. The rotation shaft 15 drives the wire rope pulley 16 to rotate through a rotation driving structure such as a motor, so that the wire rope 17 is pulled through the wire rope pulley 16.
The rotating shaft 15 can be arranged above the catalyst unit 1 to pull the frame 6 upwards, at the moment, the spring drives the frame 6 downwards, in the embodiment, the rotating shaft 15 is arranged below the catalyst unit 1 to pull the frame 6 downwards, at the moment, the spring drives the frame 6 upwards, in the embodiment, the spring 10 is sleeved on the guide rod 9, and the steel wire rope 17 passes through any catalyst pore channel 2 and is connected with the frame 6, compared with the embodiment 1, the embodiment does not need to arrange the collision block 12 and the inclined iron 13, so that the distance between the rake soot blower 11 and the frame 6 can be shortened, and soot blowing is facilitated.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (8)
1. The utility model provides a catalyst mechanical deashing anti-blocking device which characterized in that: the catalyst comprises a frame (6) and a driving device for driving the frame (6) to move up and down, wherein a plurality of metal wires (4) which vertically extend into a catalyst pore channel (2) are fixedly connected to the frame (6); the device also comprises a metal wire poking rod (14) fixedly connected to the rake soot blower (11), wherein the end part of the metal wire (4) extends to the moving path of the metal wire poking rod (14); the driving device comprises a collision block (12) fixedly connected to the rake soot blower (11) and a chute (13) fixedly connected to the frame (6), wherein an inclined plane positioned on the moving path of the collision block (12) is arranged on the chute (13), and the driving device further comprises a spring (10) for driving the frame (6) to reset.
2. The mechanical ash removal and blocking prevention device for a catalyst according to claim 1, wherein: the frame (6) is fixedly connected with a wire mesh (7), and the wire (4) is connected to the wire mesh (7).
3. The mechanical ash removal and blocking prevention device for a catalyst according to claim 1, wherein: a plurality of ash scraping rings (5) are fixedly connected to the metal wire (4).
4. A catalyst mechanical ash removal anti-blocking device according to claim 3, characterized in that: the ash scraping rings (5) are coplanar with the metal wires (4), and the included angle between the adjacent ash scraping rings (5) is 90 degrees.
5. The mechanical ash removal and blocking prevention device for a catalyst according to claim 1, wherein: the inlet and outlet of the catalyst pore canal (2) are hardened or a protecting cover is added, so that the abrasion of the metal wires to the catalyst is reduced.
6. The mechanical ash removal and blocking prevention device for a catalyst according to claim 1, wherein: the device also comprises a fixed guide rod (9), and a guide sleeve (8) sleeved on the guide rod (9) is fixedly connected to the frame (6).
7. A mechanical ash removal and blockage prevention device for a catalyst according to any one of claims 1 to 6, wherein: the collision block (12) is provided with a roller matched with the inclined plane.
8. A mechanical ash removal and blockage prevention device for a catalyst according to any one of claims 1 to 6, wherein: the driving device can further comprise a rotating shaft (15) and a steel wire rope wheel (16) fixedly connected to the rotating shaft (15), a steel wire rope (17) on the steel wire rope wheel (16) is connected with the frame (6), and the driving device further comprises a spring (10) for driving the frame (6) to reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839934.9U CN220176531U (en) | 2023-04-17 | 2023-04-17 | Catalyst mechanical ash removal anti-blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839934.9U CN220176531U (en) | 2023-04-17 | 2023-04-17 | Catalyst mechanical ash removal anti-blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220176531U true CN220176531U (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320839934.9U Active CN220176531U (en) | 2023-04-17 | 2023-04-17 | Catalyst mechanical ash removal anti-blocking device |
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| Country | Link |
|---|---|
| CN (1) | CN220176531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118059674A (en) * | 2023-04-17 | 2024-05-24 | 王雪梅 | Catalyst mechanical ash removal anti-blocking device |
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2023
- 2023-04-17 CN CN202320839934.9U patent/CN220176531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118059674A (en) * | 2023-04-17 | 2024-05-24 | 王雪梅 | Catalyst mechanical ash removal anti-blocking device |
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