CN220696359U - Flue gas dispersing device and SCR catalytic denitration system - Google Patents
Flue gas dispersing device and SCR catalytic denitration system Download PDFInfo
- Publication number
- CN220696359U CN220696359U CN202322273575.8U CN202322273575U CN220696359U CN 220696359 U CN220696359 U CN 220696359U CN 202322273575 U CN202322273575 U CN 202322273575U CN 220696359 U CN220696359 U CN 220696359U
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- Prior art keywords
- flue gas
- pipeline
- flow guiding
- dispersing device
- smoke
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 27
- 239000003546 flue gas Substances 0.000 title claims description 27
- 239000000779 smoke Substances 0.000 claims abstract description 45
- 238000004140 cleaning Methods 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 10
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a smoke dispersing device and an SCR catalytic denitration system, which comprise a smoke inlet pipeline, a dispersing assembly and a smoke outlet pipeline which are sequentially arranged, wherein the dispersing assembly comprises a rotating shaft and a plurality of rotating blades, the rotating blades are fixedly connected to the side part of the rotating shaft, and the rotating shaft is rotationally connected with the smoke outlet pipeline; the rotating blades are obliquely arranged, and the inclined direction of the rotating blades is arranged at an included angle with the flowing direction of the tail gas flow. According to the utility model, the exhaust gas flow is subjected to dispersion treatment, and the distribution uniformity of fly ash particles is improved, so that the SCR catalytic denitration system can effectively carry out SCR catalytic reduction on the exhaust gas to improve the denitration treatment efficiency.
Description
Technical Field
The utility model relates to the technical field of flue gas denitration, in particular to a flue gas dispersing device and an SCR catalytic denitration system.
Background
SCR (selective catalytic reduction) is a treatment technology for NOx in the exhaust emission of an internal combustion engine power system, i.e. under the action of a catalyst, a reducing agent (such as liquid ammonia, urea, ammonia water, etc.) is sprayed to reduce the NOx in the exhaust into N 2 And H 2 O. In the related art, due to the reasons that the exhaust gas flow is too concentrated, the fly ash particles are unevenly distributed, and the like, the SCR catalytic denitration system cannot effectively carry out SCR catalytic reduction on the exhaust gas, so that the denitration treatment efficiency is reduced.
It should be noted that the foregoing is only used to assist in understanding the technical solution of the present utility model, and does not represent an admission that the foregoing is prior art.
Disclosure of Invention
The utility model mainly aims to provide a flue gas dispersing device and an SCR catalytic denitration system, which aim to realize the dispersion treatment of tail gas flow and improve the distribution uniformity of fly ash particles, so that the SCR catalytic denitration system can effectively carry out SCR catalytic reduction on tail gas to improve the denitration treatment efficiency.
In order to achieve the above purpose, the utility model provides a smoke dispersing device, which comprises a smoke inlet pipeline, a dispersing component and a smoke outlet pipeline which are sequentially arranged, wherein the inlet end of the smoke inlet pipeline is used for being connected with an internal combustion engine power system, and the outlet end of the smoke outlet pipeline is used for being connected with an SCR catalytic denitration system; the dispersing assembly comprises a rotating shaft and a plurality of rotating blades, the rotating blades are fixedly connected to the side part of the rotating shaft, and the rotating shaft is rotationally connected with the smoke outlet pipeline; the rotating blades are obliquely arranged, and the inclined direction of the rotating blades is arranged at an included angle with the flowing direction of the tail gas flow.
Optionally, the dispersing assembly further comprises a rotary driving device, the rotary driving device is arranged outside the smoke outlet pipeline, and the driving end of the rotary driving device is connected with the rotating shaft.
Optionally, a reducing pipeline is arranged between the smoke inlet pipeline and the dispersing component, the cross-sectional area of the reducing pipeline gradually decreases along the smoke flowing direction, and the outlet end of the reducing pipeline faces the rotating blade.
Optionally, the flue gas dispersing device further comprises a cleaning assembly, wherein the cleaning assembly comprises a cleaning tank carrying cleaning water, and the cleaning tank is positioned right below the rotating blades; when the rotating blade rotates to below the rotating shaft, the rotating blade is located in the washing tub.
Optionally, the cleaning assembly further comprises a filtering device and a water pump device, and the cleaning tank, the water pump device and the filtering device are sequentially connected through a cleaning pipeline.
Optionally, a flow guiding component is arranged on one side of the smoke outlet pipe close to the outlet end of the smoke outlet pipe, the flow guiding component comprises a plurality of flow guiding columns, each flow guiding column is formed by arranging a plurality of flow guiding pieces in a linear array, and the flow guiding pieces in the adjacent flow guiding columns are mutually staggered; a flow guiding gap is arranged between the adjacent flow guiding pieces.
Optionally, the flow guiding piece is in a spherical structure with a smooth surface.
Optionally, the smoke inlet pipe comprises a vertical section and a horizontal section which are connected, and the horizontal section is connected with the dispersing component; and an ash collecting funnel is arranged at the bottom of one side of the horizontal section, which is close to the vertical section.
Optionally, an end of the vertical section away from the horizontal section is configured as a conical structure, and a relatively large diameter end of the conical structure is used for connecting with the internal combustion engine power system.
In order to achieve the above purpose, the utility model provides an SCR catalytic denitration system, which comprises the flue gas dispersing device, wherein the flue gas dispersing device is arranged at the air inlet end of the SCR catalytic denitration system.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model sets up the dispersing assembly between the gas inlet pipe and gas outlet pipe, the dispersing assembly includes rotating shaft and turning vane, wherein the rotating shaft is connected with gas outlet pipe rotation; the rotating blades are obliquely arranged, and the oblique direction of the rotating blades and the flowing direction of the tail gas flow form an included angle; in this way, when the tail gas flow passes through the smoke inlet pipeline and the smoke outlet pipeline, the wind power of the tail gas flow can give a horizontal component force to the inclined rotating blades, and the horizontal component force drives the rotating blades to rotate relative to the smoke outlet pipeline; on one hand, the rotary blades generate rotary air flow in the rotating process, and the rotary air flow is utilized to rotationally disperse the tail gas air flow; on the other hand, the inclined rotating blades play a role in guiding the tail gas flow, and guide the tail gas flow to flow around the inner side of the smoke outlet pipeline; therefore, the exhaust gas flow is subjected to dispersion treatment, and the distribution uniformity of fly ash particles is improved, so that the SCR catalytic denitration system can effectively carry out SCR catalytic reduction on the exhaust gas, and the denitration treatment efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a flue gas dispersing device according to the present utility model;
fig. 2 is a schematic structural view of a cleaning assembly in an embodiment of the flue gas dispersing device of the present utility model.
The names of the components marked in the figures are as follows:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and rear … …) in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement situation, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
Furthermore, it should be noted that the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The embodiment discloses a smoke dispersing device, which comprises a smoke inlet pipeline 1, a dispersing component 2 and a smoke outlet pipeline 3 which are sequentially arranged, wherein the inlet end of the smoke inlet pipeline 1 is used for being connected with an internal combustion engine power system 7, and the outlet end of the smoke outlet pipeline 3 is used for being connected with an SCR catalytic denitration system 8; the dispersing assembly 2 comprises a rotating shaft 202 and a plurality of rotating blades 201, the rotating blades 201 are fixedly connected to the side part of the rotating shaft 202, and the rotating shaft 202 is rotationally connected with the smoke outlet pipeline 3; the rotating blades 201 are obliquely arranged, and the oblique direction of the rotating blades 201 is arranged at an included angle with the flow direction of the tail gas flow.
In the embodiment, a dispersing assembly 2 is arranged between a smoke inlet pipeline 1 and a smoke outlet pipeline 3, the dispersing assembly 2 comprises a rotating shaft 202 and rotating blades 201, and the rotating shaft 202 is rotationally connected with the smoke outlet pipeline 3; the rotating blades 201 are obliquely arranged, and the oblique direction of the rotating blades 201 and the flowing direction of the tail gas flow form an included angle; in this way, when the tail gas flow passes through the smoke inlet pipe 1 and the smoke outlet pipe 3, the wind power of the tail gas flow can give a horizontal component force to the inclined rotating blades 201, and the horizontal component force drives the rotating blades 201 to rotate relative to the smoke outlet pipe 3; on the one hand, the rotating blade 201 generates a rotating airflow in the rotating process, and the rotating airflow is utilized to rotationally disperse the tail gas airflow; on the other hand, the inclined rotating blades 201 play a role in guiding the tail gas flow, and guide the tail gas flow to flow around the inner side of the smoke outlet pipeline 3; therefore, the exhaust gas flow is subjected to dispersion treatment, and the distribution uniformity of fly ash particles is improved, so that the SCR catalytic denitration system 8 can effectively carry out SCR catalytic reduction on the exhaust gas, and the denitration treatment efficiency is improved.
As a preferred scheme of the above embodiment, the dispersing assembly 2 further includes a rotation driving device 203, the rotation driving device 203 is disposed outside the smoke outlet pipe 3, and the driving end of the rotation driving device 203 is connected with the rotation shaft 202. In this way, in order to avoid that the exhaust air cannot drive the rotating blade 201 to rotate due to insufficient wind power, the rotating shaft 202 is connected with the rotation driving device 203 in this embodiment, so that the rotation driving force of the rotating blade 201 can be provided by the rotation driving device 203.
As a preferable aspect of the above embodiment, a reducing duct 4 is provided between the smoke inlet duct 1 and the dispersing unit 2, the cross-sectional area of the reducing duct 4 is gradually reduced in the smoke flow direction, and the outlet end of the reducing duct 4 is directed toward the rotating blade 201. So set up, similar to the water pipe jet principle, under the same pressure's condition, the smaller the pipeline aperture is, the more the water flow self pressure is, makes its spraying distance more. Similarly, in the process that the tail gas air flow moves along the reducing pipeline 4 through the arrangement, the self pressure of the tail gas air flow is gradually increased, so that the pushing force of the tail gas air flow to the rotating blades 201 is effectively improved, and the rotating blades 201 can be effectively driven to rotate.
As a preferred aspect of the above embodiment, the flue gas dispersing device further includes a cleaning assembly 5, the cleaning assembly 5 includes a cleaning tank 501 carrying cleaning water, and the cleaning tank 501 is located directly under the rotating blades 201; when the rotary blade 201 rotates below the rotation shaft 202, the rotary blade 201 is positioned in the wash bowl 501. So arranged, considering fly ash particles contained in the exhaust gas flow, by providing the cleaning tank 501, on the one hand, when the fly ash particles adhere to the rotating blade 201, the rotating blade 201 can be cleaned by using the cleaning tank 501, and the cleanness of the rotating blade 201 is maintained; on the other hand, the surface of the cleaned rotor blade 201 is attached with cleaning water, and the cleaning water can be used for adsorbing and bonding fly ash particles, so that the fly ash particles in the tail gas flow are primarily filtered.
Further, the cleaning assembly 5 further includes a filtering device 502 and a water pump device 503, and the cleaning tank 501, the water pump device 503 and the filtering device 502 are sequentially connected through a cleaning pipe 504. In this way, the cleaning water enters the filter 502 from the cleaning tank 501 for filtering cleaning under the power of the water pump 503, and the cleaned cleaning water flows back to the cleaning tank 501 again to be used as the cleaning medium of the rotating blade 201.
As a preferred scheme of the above embodiment, a flow guiding component 6 is disposed on one side of the smoke outlet pipe 3 near the outlet end thereof, the flow guiding component 6 includes a plurality of flow guiding columns 601, each flow guiding column 601 is composed of a plurality of flow guiding pieces 602 disposed in a linear array, and the flow guiding pieces 602 in adjacent flow guiding columns 601 are disposed in a staggered manner; a flow guiding gap 603 is provided between adjacent flow guiding elements 602. So set up, set up water conservancy diversion subassembly 6 at the exit end of play tobacco pipe 3 for the tail gas air current flows through water conservancy diversion clearance 603 between water conservancy diversion piece 602, simultaneously because in the adjacent water conservancy diversion row 601 water conservancy diversion piece 602 each other crisscross setting each other, in order to further improve the dispersion effect to the tail gas air current.
Further, the flow guiding element 602 has a spherical structure with a smooth surface. By this arrangement, the adhesion of fly ash particles on the surface of the flow guiding member 602 can be avoided by the smooth spherical structure, so as to ensure the surface cleanliness of the flow guiding member 602.
As a preferred scheme of the embodiment, the smoke inlet pipeline 1 comprises a vertical section 101 and a horizontal section 102 which are connected, wherein the horizontal section 102 is connected with the dispersing component 2; the bottom of one side of the horizontal section 102, which is close to the vertical section 101, is provided with an ash collection funnel 103. So set up, in the exhaust air current flows to the in-process of horizontal segment 102 from vertical segment 101, fly ash granule in the exhaust air current gets rid of to collect in the ash funnel 103 owing to centrifugal effort, realizes the preliminary filtration to the fly ash granule in the exhaust air current.
Further, the end of the vertical section 101 remote from the horizontal section 102 is provided with a conical configuration in which the relatively large diameter end is adapted to be connected to the internal combustion engine power system 7. So set up, utilize the toper structure to carry out drainage to the exhaust air current of follow internal-combustion engine power system 7 and concentrate.
Because the SCR catalytic denitration system adopts all the technical schemes of all the embodiments, the SCR catalytic denitration system has at least all the beneficial effects brought by the technical schemes of the embodiments, and is not described in detail herein.
It should be noted that, other contents of the flue gas dispersing device and the SCR catalytic denitration system disclosed in the present utility model are related art, and are not described herein.
The foregoing is merely an alternative embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all applications of the present utility model directly/indirectly in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The flue gas dispersing device is characterized by comprising a flue gas inlet pipeline, a dispersing assembly and a flue gas outlet pipeline which are sequentially arranged, wherein the inlet end of the flue gas inlet pipeline is used for being connected with an internal combustion engine power system, and the outlet end of the flue gas outlet pipeline is used for being connected with an SCR catalytic denitration system; the dispersing assembly comprises a rotating shaft and a plurality of rotating blades, the rotating blades are fixedly connected to the side part of the rotating shaft, and the rotating shaft is rotationally connected with the smoke outlet pipeline; the rotating blades are obliquely arranged, and the inclined direction of the rotating blades is arranged at an included angle with the flowing direction of the tail gas flow.
2. The flue gas dispersing device of claim 1, wherein: the dispersing assembly further comprises a rotary driving device, the rotary driving device is arranged outside the smoke outlet pipeline, and the driving end of the rotary driving device is connected with the rotating shaft.
3. The flue gas dispersing device of claim 1, wherein: and a reducing pipeline is arranged between the smoke inlet pipeline and the dispersing assembly, the cross-sectional area of the reducing pipeline is gradually reduced along the smoke flowing direction, and the outlet end of the reducing pipeline faces the rotating blades.
4. The flue gas dispersing device of claim 1, wherein: the flue gas dispersing device further comprises a cleaning assembly, wherein the cleaning assembly comprises a cleaning tank carrying cleaning water, and the cleaning tank is positioned right below the rotating blades; when the rotating blade rotates to below the rotating shaft, the rotating blade is located in the washing tub.
5. The flue gas dispersing device of claim 4, wherein: the cleaning assembly further comprises a filtering device and a water pump device, and the cleaning tank, the water pump device and the filtering device are sequentially connected through a cleaning pipeline.
6. The flue gas dispersing device of claim 1, wherein: a flow guiding assembly is arranged on one side of the smoke outlet pipe close to the outlet end of the smoke outlet pipe, the flow guiding assembly comprises a plurality of flow guiding columns, each flow guiding column is formed by arranging a plurality of flow guiding pieces in a linear array, and the flow guiding pieces in the adjacent flow guiding columns are mutually staggered; and a flow guiding gap is arranged between the adjacent flow guiding pieces.
7. The flue gas dispersing device of claim 6, wherein: the flow guide piece is of a spherical structure with a smooth surface.
8. The flue gas dispersing device of claim 1, wherein: the smoke inlet pipeline comprises a vertical section and a horizontal section which are connected, and the horizontal section is connected with the dispersing assembly; and an ash collecting funnel is arranged at the bottom of one side of the horizontal section, which is close to the vertical section.
9. The flue gas dispersing device of claim 8, wherein: the one end that the vertical section kept away from the horizontal section sets up to the toper structure, the one end that the diameter is great relatively in the toper structure is arranged in with internal-combustion engine power system is connected.
10. An SCR catalytic denitration system, characterized in that: a flue gas dispersing device according to any one of claims 1-9, which is arranged at the inlet end of the SCR catalytic denitration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273575.8U CN220696359U (en) | 2023-08-23 | 2023-08-23 | Flue gas dispersing device and SCR catalytic denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273575.8U CN220696359U (en) | 2023-08-23 | 2023-08-23 | Flue gas dispersing device and SCR catalytic denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220696359U true CN220696359U (en) | 2024-04-02 |
Family
ID=90453165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322273575.8U Active CN220696359U (en) | 2023-08-23 | 2023-08-23 | Flue gas dispersing device and SCR catalytic denitration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220696359U (en) |
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2023
- 2023-08-23 CN CN202322273575.8U patent/CN220696359U/en active Active
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