CN221015383U - Denitration mechanism of biomass direct-fired boiler - Google Patents
Denitration mechanism of biomass direct-fired boiler Download PDFInfo
- Publication number
- CN221015383U CN221015383U CN202322511809.8U CN202322511809U CN221015383U CN 221015383 U CN221015383 U CN 221015383U CN 202322511809 U CN202322511809 U CN 202322511809U CN 221015383 U CN221015383 U CN 221015383U
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- Prior art keywords
- connecting pipe
- denitration
- filter screen
- dust
- smoke
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- 230000007246 mechanism Effects 0.000 title claims abstract description 49
- 239000002028 Biomass Substances 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 42
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 21
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 239000000779 smoke Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 13
- 238000004140 cleaning Methods 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 19
- 239000003546 flue gas Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000203 mixture Substances 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
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a denitration mechanism of a biomass direct-fired boiler, which belongs to the field of denitration mechanisms, and comprises a boiler body and a denitration mechanism, wherein the arranged filter mechanism is matched with the denitration mechanism, when the boiler body discharges smoke into a connecting pipe through a smoke exhaust pipe, a dust removing filter screen can adsorb and filter particulate matters in the smoke, and a driving motor drives an output end to drive a screw rod to rotate through a rotating rod, so that a cleaning plate transversely moves along the screw rod through a screw hole on the side wall, and in the moving process, dust attached to a cleaning brush and a dust removing filter screen at the rear end is cleaned, and falls into a dust hopper to be collected, so that the problem that the dust removing filter screen is blocked after being used for a long time is solved, the filtering effect of the dust removing filter screen on the particulate matters in the smoke is ensured, and the particulate matters in the smoke can be filtered and preprocessed when the denitration mechanism processes the smoke, and then the particulate matters are prevented from entering the denitration tower and attaching to the surface of a catalyst layer.
Description
Technical Field
The utility model relates to the field of denitration mechanisms, in particular to a denitration mechanism of a biomass direct-fired boiler.
Background
Biomass boilers are heating equipment for heating by generating electricity from biomass, and are classified into thermal energy boilers and electric energy boilers according to the difference of energy sources used, and are classified into large biomass boilers and small biomass boilers according to the scale of the equipment.
In the prior art, a large amount of flue gas containing NOx can be generated in the garbage incineration using process of the biomass direct-fired boiler, so that harm to the environment and human bodies is avoided, a denitration mechanism is arranged at the tail smoke outlet of the biomass direct-fired boiler, the content of NOx in the flue gas is reduced by the denitration mechanism, the content of the discharged NOx can be greatly reduced by the denitration mechanism through adopting an SCE denitration technology, the principle of the denitration mechanism is that a reducing agent (liquid ammonia) reacts with nitrogen oxides in the flue gas to generate harmless nitrogen and water under the action of a catalyst, so that NOx in the flue gas is removed, but the existing denitration mechanism contains a large amount of particulate matters in the flue gas in the using process, so that the particulate matters can be attached to the surface of a catalyst layer in the denitration mechanism, the using effect of the catalyst layer can be influenced after long-time use, and the treatment effect of the denitration mechanism on the NOx in the flue gas can be reduced.
Disclosure of utility model
The utility model mainly aims to provide a denitration mechanism of a biomass direct-fired boiler, 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 denitration mechanism of biomass direct-fired boiler, includes furnace body and denitration mechanism, denitration mechanism includes denitration tower, catalyst layer, rectification grid, connecting pipe, spouts ammonia grid and vortex grid, the top fixedly connected with air inlet of denitration tower, and the bottom fixedly connected with gas outlet of denitration tower, the inside fixedly connected with multilayer catalyst layer of denitration tower, and the inside top of denitration tower still fixedly connected with rectification grid, fixedly connected with connecting pipe between the exhaust pipe on air inlet and furnace body right side, and fixedly connected with vortex grid in the top transverse portion of connecting pipe, fixedly connected with spouts ammonia grid in the vertical position of connecting pipe, be equipped with filtering mechanism in the bottom transverse portion of connecting pipe, and filtering mechanism includes dust hopper, fixed plate, driving motor, screw rod, clearance board, clearance brush and dust removal filter screen, dust removal filter screen fixedly connected with is in the inside of connecting pipe, and the inside fixedly connected with upper and lower symmetrical fixed plate of connecting pipe, driving motor fixedly connected with is on the lateral wall of connecting pipe, the screw rod passes through the dwang swing joint at both ends in the connecting pipe, and the clearance board is connected with the clearance board through the clearance board on the clearance board through the fixed connection of screw rod and the clearance board.
Preferably, the left and right side walls in the transverse position of the bottom end of the connecting pipe are respectively provided with a rotating hole, and the bottom surface of the transverse position of the bottom end of the connecting pipe is fixedly provided with a communicated dust hopper.
Preferably, a group of fixing plates which are vertically symmetrical are fixedly arranged in the transverse part of the bottom end of the connecting pipe and above the dust hopper, and sliding grooves are respectively formed in opposite surfaces of the fixing plates which are vertically symmetrical.
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 driving motor is fixedly arranged on the outer side wall of the transverse part of the bottom end of the connecting pipe, and the output end of the driving motor is fixedly arranged with the rotating rods at the left end.
Preferably, the dust removing filter screen is fixedly arranged in the transverse part of the bottom end of the connecting pipe and is positioned at the rear of the dust collecting hopper.
Preferably, the screw is offered on the lateral wall of clearance board, and clearance board passes through screw and screw threaded connection, the upper and lower both ends of clearance board are fixed mounting respectively has the slider, and slider movable mounting is in the spout, still fixed mounting has the clearance brush of hugging closely with the dust removal filter screen on the rear end wall of clearance board.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the filter mechanism is matched with the denitration mechanism, when the furnace body discharges smoke into the connecting pipe through the smoke exhaust pipe, the dust removing filter screen adsorbs and filters particulate matters in the smoke, the driving motor drives the output end to drive the screw rod to rotate through the rotating rod, so that the cleaning plate transversely moves along the screw rod through the screw hole on the side wall, dust attached to the dust removing filter screen is cleaned through the cleaning brush at the rear end in the moving process, and falls into the dust collecting hopper to be collected, so that the problem that the dust removing filter screen is blocked after long-time use is avoided, the filtering effect of the dust removing filter screen on the particulate matters in the smoke is ensured, the particulate matters in the smoke can be filtered and preprocessed when the denitration mechanism processes the smoke, and the use effect of the catalyst layer and the NOx treatment effect of the denitration mechanism on the smoke are further ensured.
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 denitration mechanism of the present utility model;
fig. 3 is a schematic view showing the structure of the filtering mechanism of the present utility model.
In the figure: 1. a furnace body; 2. a smoke exhaust pipe; 3. a denitration mechanism; 4. a denitration tower; 5. an air inlet; 6. an air outlet; 7. a catalyst layer; 8. a rectifying grille; 9. a connecting pipe; 10. an ammonia spraying grid; 11. a spoiler grid; 12. a filtering mechanism; 13. a rotation hole; 14. a dust hopper; 15. a fixing plate; 16. a chute; 17. a driving motor; 18. a screw; 19. a rotating lever; 20. a cleaning plate; 21. a screw hole; 22. a slide block; 23. cleaning a hairbrush; 24. and a dust removing filter screen.
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 to 3, in this embodiment, in order to pre-treat particulate matters in flue gas by the filtering mechanism 12 when the denitration mechanism 3 is used for treating flue gas discharged from the furnace body 1, the particulate matters in the flue gas are prevented from adhering to the surface of the catalyst layer 7 to affect the use of the catalyst layer 7, and the specific use principle of the filtering mechanism 12 in combination with the denitration mechanism 3 is as follows:
The flue gas generated by the furnace body 1 during use is discharged into the connecting pipe 9 through the smoke discharging pipe 2, the flue gas is screwed into the connecting pipe 9, the dust removing filter screen 24 arranged in the connecting pipe 9 absorbs and filters the particulate matters in the flue gas, the particulate matters are prevented from entering the surface of the catalyst layer 7 in the denitration tower 4, the using effect of the catalyst layer 7 and the treatment effect of the denitration mechanism 3 on NOx in the flue gas are ensured, meanwhile, the driving motor 17 drives the rotating rods 19 arranged at the left end and the right end of the screw rod 18 to rotate in the rotating holes 13 arranged on the side wall of the connecting pipe 9, the rotating rods 19 drive the screw rod 18 to rotate in the connecting pipe 9, at the moment, the cleaning plate 20 transversely moves along the connecting pipe 9 through the screw holes 21, the sliding blocks 22 arranged at the upper end and the lower end of the cleaning plate 20 slide in the sliding grooves 16 arranged on the opposite surface walls of the fixing plate 15, the cleaning plate 20 moves in the sliding mode, the dust removing hopper 24 can prevent the particulate matters from entering the dust removing hopper 24 in the surface of the connecting pipe 9 from being polluted by the particulate matters after the dust removing filter screen 24 in the flue gas, the dust removing filter screen is prevented from entering the dust removing mechanism 24 in the surface of the dust removing tower 4, and the dust removing filter screen is prevented from the dust removing the particulate matters in the dust removing process, thereby guaranteeing the use effect of the catalyst layer 7 and the treatment effect of the denitration mechanism 3 on NOx in the flue gas;
Particulate matter in the flue gas is filtered through filtering mechanism 12, ammonia spraying grille 10 installed in connecting pipe 9 can spray ammonia in connecting pipe 9 to make ammonia and flue gas mix together, and ammonia and flue gas can improve ammonia and flue gas's mixed effect under the effect that the vortex is broken up when rethread vortex grille 11 installed in connecting pipe 9, and the gas after mixing is in through air inlet 5 by rectifying grille 8 after the rectification even entering into denitration tower 4, and discharge the gas after purifying from gas outlet 6 of bottom after the catalyst layer 7 that installs in the denitration tower 4 handles.
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 denitration mechanism of biomass direct-fired boiler, includes furnace body (1) and denitration mechanism (3), denitration mechanism (3) are including denitration tower (4), catalyst layer (7), rectification grid (8), connecting pipe (9), spouting ammonia grid (10) and vortex grid (11), the top fixedly connected with air inlet (5) of denitration tower (4), and the bottom fixedly connected with gas outlet (6) of denitration tower (4), the inside fixedly connected with multilayer catalyst layer (7) of denitration tower (4), and the inside top of denitration tower (4) still fixedly connected with rectification grid (8), fixedly connected with connecting pipe (9) between exhaust pipe (2) on air inlet (5) and furnace body (1) right side, and the top transverse portion internal fixation of connecting pipe (9) has vortex grid (11), the vertical position internal fixation of connecting pipe (9) spouts ammonia grid (10), its characterized in that: the utility model discloses a dust removal filter, including connecting pipe (9), filter mechanism (12) are equipped with in the bottom transverse position of connecting pipe (9), and filter mechanism (12) including dust hopper (14), fixed plate (15), driving motor (17), screw rod (18), clearance board (20), clearance brush (23) and dust removal filter screen (24), dust removal filter screen (24) fixed connection is in the inside of connecting pipe (9), and dust removal filter screen (24) the place ahead and be located inside fixedly connected with fixed plate (15) of connecting pipe (9) symmetry from top to bottom, driving motor (17) fixed connection is on the lateral wall of connecting pipe (9), screw rod (18) pass through dwang (19) swing joint at both ends in connecting pipe (9), and dwang (19) and driving motor (17) output fixed connection, clearance board (20) pass through screw (21) and screw (18) swing joint on the lateral wall, and clearance board (20) are still through slider (22) swing joint of upper and lower extreme between fixed plate (15), clearance brush (23) fixed connection is at the rear end of clearance board (20).
2. The denitration mechanism of a biomass direct-fired boiler according to claim 1, wherein: rotation holes (13) are respectively formed in the left side wall and the right side wall in the bottom transverse position of the connecting pipe (9), and a communicated dust hopper (14) is fixedly arranged on the bottom surface of the bottom transverse position of the connecting pipe (9).
3. The denitration mechanism of a biomass direct-fired boiler according to claim 2, wherein: a group of fixing plates (15) which are vertically symmetrical are fixedly arranged in the transverse position of the bottom end of the connecting pipe (9) and above the dust hopper (14), and sliding grooves (16) are respectively formed in opposite surfaces of the fixing plates (15) which are vertically symmetrical.
4. A denitration mechanism for a biomass direct-fired boiler as claimed in claim 3, wherein: the left end and the right end of the screw rod (18) are respectively and fixedly provided with a rotating rod (19), the rotating rods (19) are movably arranged in the rotating holes (13), the driving motor (17) is fixedly arranged on the outer side wall of the transverse part of the bottom end of the connecting pipe (9), and the output end of the driving motor (17) is fixedly arranged with the rotating rods (19) at the left end.
5. The denitration mechanism of a biomass direct-fired boiler according to claim 4, wherein: the dust removing filter screen (24) is fixedly arranged in the transverse part of the bottom end of the connecting pipe (9) and is positioned behind the dust collecting hopper (14).
6. The denitration mechanism of a biomass direct-fired boiler according to claim 5, wherein: screw (21) have been seted up on the lateral wall of clearance board (20), and clearance board (20) pass through screw (21) and screw rod (18) threaded connection, the upper and lower both ends of clearance board (20) are fixed mounting respectively has slider (22), and slider (22) movable mounting is in spout (16), clearance brush (23) that still fixed mounting hugs closely with dust removal filter screen (24) on the rear end wall of clearance board (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511809.8U CN221015383U (en) | 2023-09-15 | 2023-09-15 | Denitration mechanism of biomass direct-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511809.8U CN221015383U (en) | 2023-09-15 | 2023-09-15 | Denitration mechanism of biomass direct-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221015383U true CN221015383U (en) | 2024-05-28 |
Family
ID=91171577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322511809.8U Active CN221015383U (en) | 2023-09-15 | 2023-09-15 | Denitration mechanism of biomass direct-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221015383U (en) |
-
2023
- 2023-09-15 CN CN202322511809.8U patent/CN221015383U/en active Active
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