CN115624862B - Automatic change ammonia injection grid - Google Patents
Automatic change ammonia injection grid Download PDFInfo
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- CN115624862B CN115624862B CN202211252449.8A CN202211252449A CN115624862B CN 115624862 B CN115624862 B CN 115624862B CN 202211252449 A CN202211252449 A CN 202211252449A CN 115624862 B CN115624862 B CN 115624862B
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- diffusion
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- ammonia
- outer sleeve
- small holes
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 73
- 238000002347 injection Methods 0.000 title claims description 24
- 239000007924 injection Substances 0.000 title claims description 24
- 230000008859 change Effects 0.000 title description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 66
- 238000005507 spraying Methods 0.000 claims abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003546 flue gas Substances 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 30
- 238000000034 method Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The application relates to the technical field of ammonia spraying grids, in particular to an automatic ammonia spraying grid, which comprises an outer sleeve, a regulating component and a diffusion component, wherein the diffusion component comprises a plurality of nozzles, connecting members, diffusion caps and diffusion blades, the plurality of nozzles are respectively connected with the outer sleeve in a disassembling mode and are respectively positioned at first small holes, each nozzle is connected with the connecting member, each connecting member is connected with the diffusion cap, the outer surface wall of each diffusion cap is fixedly connected with the diffusion blades, and the diffusion blades are respectively distributed in a threaded mode; after the ammonia spraying flow of the outer sleeve is regulated by the regulating component, ammonia is sprayed out of the nozzle through the first small hole, the air flow impacts the diffusion blade to drive the diffusion cap to rotate, the ammonia is separated from different directions, the contact area of the ammonia and the flue gas is enlarged, and the mixing effect of the ammonia and the flue gas is improved.
Description
Technical Field
The application relates to the technical field of ammonia spraying grids, in particular to an automatic ammonia spraying grid.
Background
In a thermal generator set SCR system, an ammonia injection grid is generally installed, the ammonia injection grid is disposed in a flue, and injected ammonia (NH) is performed under the action of a catalyst 3 ) Mixing with nitrogen oxide (NOx) to react and denitrate, the ammonia injection grille of the prior art adopts a mode of forming a certain number of small holes with certain diameter on a metal round tube, the flow regulation of the ammonia injection grille depends on a regulating valve, and because of the limitation of the self characteristic of the regulating valve, a large regulating dead zone exists, when the opening is smaller, the flow change is very slow, and when the opening is smaller, the flow is changedWhen the flow rate is large, the flow rate change is extremely rapid, the adjustment of the adjusting valve is difficult, and the adjustment is extremely insensitive.
The prior publication No. CN102179157B discloses an ammonia spraying grid and an adjusting method thereof, the ammonia spraying grid comprises an upper outer sleeve, a lower outer sleeve which is arranged opposite to the upper outer sleeve, an upper inner sleeve which is nested in the upper outer sleeve, a lower inner sleeve which is nested in the lower outer sleeve, wherein one end of the upper outer sleeve and one end of the lower outer sleeve are connected through an outer sleeve cover plate, an outer sleeve flange is arranged at the other end of the upper outer sleeve and the other end of the lower outer sleeve, the stroke of an actuating mechanism is gradually adjusted, the upper inner sleeve and the lower inner sleeve gradually slide towards the outer sleeve cover plate side, the gap is gradually reduced, the overlapping area of a first small hole and a second small hole is gradually increased, the flow of mixed gas sprayed out through the second small hole is adjusted, and the ammonia spraying grid has the advantages of no dead zone in adjusting range, continuous flow change, easiness in control and the like.
However, in the ammonia spraying grille and the adjusting method thereof, the first small holes and the second small holes are directly arranged for spraying ammonia gas, so that the contact area of the ammonia gas and the flue gas is limited, and the mixing of the ammonia gas and the flue gas is not facilitated.
Disclosure of Invention
The application aims to provide an automatic ammonia spraying grid, which solves the problems that in the ammonia spraying grid and an adjusting method thereof, first small holes and second small holes are directly arranged for spraying ammonia, the contact area of the ammonia and flue gas is limited, and the mixing of the ammonia and the flue gas is not facilitated.
In order to achieve the above purpose, the application provides an automatic ammonia spraying grid, which comprises a plurality of outer sleeves and a plurality of adjusting components, wherein the outer sleeves are respectively arranged in parallel in the same section perpendicular to the flow direction of flue gas, the adjusting components are connected with the outer sleeves, and each outer sleeve is provided with a plurality of first small holes and further comprises a diffusion component;
the diffusion subassembly includes nozzle, connecting element, diffusion cap and diffusion blade, the quantity of nozzle is a plurality of, a plurality of the nozzle respectively with the outer tube dismantles and is connected, and is located respectively first aperture department is connected with on every the nozzle connecting element, every connecting element is connected with the diffusion cap, every the outer surface wall fixedly connected with of diffusion cap a plurality of diffusion blade, a plurality of diffusion blade is the heliciform and distributes respectively.
The connecting member comprises a first rod and a second rod, and the first rod is fixedly connected to two sides of each nozzle respectively; the side of each first rod far away from the nozzle is respectively in threaded connection with the second rod.
The connecting member further comprises buckles, wherein one sides, far away from the first rods, of each second rod are fixedly connected with the buckles respectively, and the buckles are in sliding connection with the diffusion caps.
The connecting member further comprises a supporting rod and a ball, and one side, close to the buckle, of each second rod is fixedly connected with the supporting rod respectively; and one side of each supporting rod, which is far away from the second rod, is in rolling connection with the ball, and the ball is in rolling connection with the diffusion cap.
The adjusting assembly comprises an inner sleeve, a connecting rod and a power component, wherein the inner sleeve is arranged in each outer sleeve; the inner sleeves are respectively and fixedly connected with each other through the connecting rods; the power component is connected with the connecting rod; each inner sleeve is provided with a plurality of second small holes, and the second small holes are adjacent to the first small holes.
The automatic ammonia injection grid further comprises a control assembly, wherein the control assembly comprises a monitoring module, an analysis module and a control module, the monitoring module is connected with the analysis module, and the analysis module is connected with the control module;
the monitoring module is used for monitoring the concentration of the NOx at the outlet in real time and uploading monitoring data to the analysis module;
the analysis module is used for calculating the ammonia spraying amount according to the concentration of NOx and uploading the ammonia spraying result to the control module;
the control module is used for controlling the rotation quantity of the adjusting screw rod, controlling the moving range of the adjusting sliding block, driving the moving range of the inner sleeve in the outer sleeve and adjusting the overlapping area of the first small hole and the second small hole.
According to the automatic ammonia spraying grid disclosed by the application, a plurality of outer sleeves are arranged in parallel in the same section perpendicular to the flow direction of flue gas, each outer sleeve is provided with the adjusting component for adjusting the ammonia spraying flow, each outer sleeve is provided with a plurality of first small holes for spraying ammonia gas, the first small holes are in threaded connection with the nozzles, the contact range of the ammonia gas and the flue gas is shortened and enlarged by the nozzles, the diffusion caps are connected with the nozzles through the connecting components, the outer surface walls of the diffusion caps are in threaded distribution with a plurality of diffusion blades, so that after the ammonia spraying flow of the outer sleeves is adjusted by the adjusting component, the ammonia gas is sprayed from the nozzles through the first small holes, the air flow impacts the diffusion blades to drive the diffusion caps to rotate, the ammonia gas is sprayed out from different directions, the contact area of the ammonia gas and the flue gas is enlarged, and the mixing effect of the ammonia gas and the flue gas is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic view showing the overall structure of an automated ammonia injection grid according to a first embodiment of the present application.
Fig. 2 is an enlarged view of the application at a of fig. 1.
Fig. 3 is a cross-sectional view of an automated ammonia injection grid according to a first embodiment of the application.
Fig. 4 is an enlarged view of fig. 3B of the present application.
Fig. 5 is a schematic view showing the overall structure of an automated ammonia injection grid according to a second embodiment of the present application.
Fig. 6 is an enlarged view of fig. 5 at C in accordance with the present application.
Fig. 7 is a cross-sectional view of an automated ammonia injection grid according to a second embodiment of the application.
Fig. 8 is an enlarged view of the application at D of fig. 7.
Fig. 9 is a schematic structural view of a control assembly according to a third embodiment of the present application.
In the figure: 101-outer sleeve, 102-first small hole, 103-nozzle, 104-diffusion cap, 105-diffusion blade, 106-first rod, 107-second rod, 108-buckle, 109-strut, 110-ball, 201-inner sleeve, 202-connecting rod, 203-guide block, 204-sealing layer, 205-bracket, 206-adjusting screw, 207-adjusting slide, 208-second small hole, 301-monitoring module, 302-analyzing module, 303-control module.
Detailed Description
The following detailed description of embodiments of the application, examples of which are illustrated in the accompanying drawings and, by way of example, are intended to be illustrative, and not to be construed as limiting, of the application.
The first embodiment of the application is as follows:
referring to fig. 1 to 4, fig. 1 is a schematic view illustrating an overall structure of an automated ammonia injection grid according to a first embodiment of the present application. Fig. 2 is an enlarged view of the application at a of fig. 1. Fig. 3 is a cross-sectional view of an automated ammonia injection grid according to a first embodiment of the application. Fig. 4 is an enlarged view of fig. 3B of the present application.
The application provides an automatic ammonia spraying grid, which comprises the following steps: comprising an outer sleeve 101, a regulating assembly and a diffusing assembly comprising a nozzle 103, a connecting member comprising a first rod 106, a second rod 107, a catch 108, a strut 109 and a ball 110, a diffusing cap 104 and diffusing vanes 105. According to the ammonia grid and the adjusting method thereof, the problems that in the background technology, the ammonia grid and the adjusting method thereof are directly provided with the first small holes and the second small holes for spraying ammonia, the contact area of the ammonia and the smoke is limited, and the mixing of the ammonia and the smoke is not facilitated are solved.
For this specific embodiment, the number of the outer sleeves 101 is plural, the plural outer sleeves 101 are respectively disposed in parallel in the same section perpendicular to the flue gas flow direction, the adjusting component is connected with the outer sleeves 101, and each outer sleeve 101 is provided with plural first small holes 102. The outer sleeves 101 are arranged in parallel in the same section perpendicular to the flow direction of the flue gas, each outer sleeve 101 is provided with an adjusting component for controlling the flow rate of ammonia spraying, and each outer sleeve 101 is provided with a plurality of first small holes 102 for ammonia spraying.
The number of the nozzles 103 is a plurality, the plurality of nozzles 103 are respectively connected with the outer sleeve 101 in a detachable mode and are respectively located at the first small holes 102, each nozzle 103 is connected with a connecting member, each connecting member is connected with a diffusion cap 104, the outer surface wall of each diffusion cap 104 is fixedly connected with a plurality of diffusion blades 105, and the plurality of diffusion blades 105 are respectively distributed in a threaded mode. The first small holes 102 of each outer sleeve 101 are in threaded connection with the nozzles 103, the range of ammonia injection is widened by the nozzles 103, each nozzle 103 is connected with the diffusion cap 104 through the connecting component, the diffusion cap 104 is of a funnel structure with a large upper diameter and a small lower diameter, the diffusion cap 104 has elasticity, and a plurality of diffusion blades 105 distributed in a threaded mode are fixed on the outer surface wall of the diffusion cap 104.
Secondly, the first rods 106 are fixedly connected to both sides of each nozzle 103; the side of each first rod 106 remote from the nozzle 103 is respectively screwed with the second rod 107. Each second rod 107 is fixedly connected with a buckle 108 on a side far away from the first rod 106, and the buckle 108 is slidably connected with the diffusion cap 104. The two sides of each nozzle 103 are fixed with a first rod 106, the upper end of each first rod 106 is connected with a second rod 107 in a threaded manner, the distance between the first rod 106 and the second rod 107 is adjusted through rotation, the top of the second rod 107 is fixed with a buckle 108, the buckle 108 is matched with the diffusion cap 104, the diffusion cap 104 is clamped into a groove formed in the upper portion of the diffusion cap 104, the diffusion cap 104 is rotated, and the distance between the diffusion cap 104 and the nozzle 103 is adjusted through rotation of the second rod 107.
Meanwhile, the side of each second rod 107, which is close to the buckle 108, is fixedly connected with the supporting rod 109; the ball 110 is connected to the side of each strut 109 away from the second rod 107 in a rolling manner, and the ball 110 is connected to the diffusion cap 104 in a rolling manner. One side of the second rod 107, which is close to the buckle 108, is fixed with a supporting rod 109, the supporting rod 109 is provided with a ball 110 in a rolling manner, the ball 110 contacts the outer wall of the diffusion cap 104 and is matched with a groove arranged on the outer wall of the diffusion cap 104, so that the diffusion cap 104 can rotate, the diffusion cap 104 is supported to rotate, and the rotating effect is enabled to be smoother
After the ammonia spraying flow is adjusted by the adjusting component, ammonia gas is sprayed from the nozzle 103 through the first small hole 102, air pressure impacts the diffusion blades 105 to drive the diffusion cap 104 to rotate on the buckle 108, so that the ammonia gas is split into various directions, in the rotating process of the diffusion cap 104, the balls 110 support the diffusion cap 104 to rotate stably and smoothly, the diffusion effect is better, meanwhile, the diffusion cap 104 can be detached, the second rod 107 is rotated, the lengths of the first rod 106 and the second rod 107 are adjusted, the distance between the diffusion cap 104 and the nozzle 103 is adjusted, the diffusion cap is used under various conditions, the ammonia gas is split into various directions, the contact area between the ammonia gas and the smoke gas is enlarged, and the mixing effect is better.
The second embodiment of the application is as follows:
referring to fig. 5 to 8, fig. 5 is a schematic diagram showing the overall structure of an automated ammonia injection grid according to a second embodiment of the present application. Fig. 6 is an enlarged view of fig. 5 at C in accordance with the present application. Fig. 7 is a cross-sectional view of an automated ammonia injection grid according to a second embodiment of the application. Fig. 8 is an enlarged view of the application at D of fig. 7.
The automatic ammonia injection grid of the embodiment, the adjusting assembly comprises an inner sleeve 201, a connecting rod 202, a guide block 203, a sealing layer 204 and a power component, wherein the power component comprises a bracket 205, an adjusting screw 206 and an adjusting sliding block 207.
For the present embodiment, the inner sleeve 201 is disposed inside each of the outer sleeves 101; the inner sleeves 201 are respectively and fixedly connected with each other through the connecting rods 202; the power member is connected with the connecting rod 202; each of the inner sleeves 201 has a plurality of second apertures 208, respectively, the second apertures 208 being positioned adjacent to the first apertures 102. The inner side of each outer sleeve 101 is provided with an inner sleeve 201, a plurality of second small holes 208 formed in each inner sleeve 201 are matched with the first small holes 102 and are adjacent to the first small holes 102 in position, the inner sleeves 201 are fixedly connected with each other through the connecting rods 202, the power component drives the connecting rods 202 to move up and down, the inner sleeves 201 are driven to move in the outer sleeves 101, the overlapping area between the first small holes 102 and the second small holes 208 is regulated, and then ammonia injection flow is regulated.
Wherein, one side of each outer sleeve 101 near the inner sleeve 201 is fixedly connected with the guide block 203, and the guide block 203 is slidingly connected with the inner sleeve 201. The guide blocks 203 are fixed on each outer sleeve 101, and guide grooves matched with the guide blocks 203 are formed on the outer wall of the inner sleeve 201 and are used for sliding the guide blocks 203, so that the inner sleeve 201 moves in the outer sleeve 101.
Next, the sealing layer 204 is provided between each of the outer jacket tube 101 and the inner jacket tube 201. The sealing layer 204 is made of rubber material, is fixed on the inner wall of the outer sleeve 101, and is positioned between the outer sleeve 101 and the inner sleeve 201, so that a gap between the outer sleeve 101 and the inner sleeve 201 is kept sealed, and ammonia leakage is avoided.
Meanwhile, the adjusting screw 206 is rotatably connected with the bracket 205; the adjusting slider 207 is connected with the adjusting screw 206 and is fixedly connected with the connecting rod 202. The support 205 is fixed on a flue or an equipment carrier outside the outer sleeve 101, the adjusting screw 206 is rotationally connected, the adjusting screw 206 is driven to rotate by a motor, the adjusting screw 206 is connected with the adjusting slide block 207, the adjusting slide block 207 moves up and down along with the forward rotation and the reverse rotation of the adjusting screw 206, and the adjusting slide block 207 is fixedly connected with the connecting rod 202 to drive the connecting rod 202 to move up and down.
When the ammonia spraying flow needs to be regulated, the automatic ammonia spraying grid of the embodiment is used, the regulating screw rod 206 is started to drive the regulating slide block 207 to move up and down, the connecting rod 202 is driven to move up and down, the inner sleeves 201 move up and down in the outer sleeve 101 along with the inner sleeves, the overlapping area between the first small holes 102 and the second small holes 208 is regulated, so that the overlapping area between the first small holes 102 and the second small holes 208 is enlarged and reduced, ammonia gas flows in from the inner sleeves 201 and is sprayed out from the overlapping area between the first small holes 102 and the second small holes 208, the ammonia spraying flow is regulated, and the automatic ammonia spraying grid has the advantages of no dead zone in regulating range, continuous flow change, easiness in control and the like.
The third embodiment of the application is as follows:
referring to fig. 9 on the basis of the second embodiment, fig. 9 is a schematic structural diagram of a control assembly according to a third embodiment of the present application.
The automated ammonia injection grid of the present embodiment further comprises a control assembly comprising a monitoring module 301, an analysis module 302, and a control module 303.
For the present embodiment, the monitoring module 301 is connected to the analyzing module 302, and the analyzing module 302 is connected to the control module 303;
the monitoring module 301 is configured to monitor the concentration of the outlet NOx in real time, and upload monitoring data to the analysis module 302;
the analysis module 302 is configured to calculate an ammonia injection amount according to the NOx concentration, and upload an ammonia injection result to the control module 303;
the control module 303 is configured to control a rotation amount of the adjusting screw 206, control a movement range of the adjusting slider 207, drive a movement range of the inner sleeve 201 in the outer sleeve 101, and adjust a superposition area of the first aperture 102 and the second aperture 208. The monitoring module 301 is installed at the outlet of the device, performs self-ash removal, wear-resistant flow rate measurement and flow field on-line monitoring in the flue, performs real-time monitoring on the concentration of NOx based on a NOx stable monitoring sampling system of the radial flue gas filtering probe, performs visual monitoring on system software based on NOx flux data of Web, calculates the NO of the large-section flue, performs 2D/3D display on the flux field, performs cross section mean value and deviation diagnosis, and uploads the data to the analysis module 302, and the analysis module 302 calculates the locking of a key ammonia spraying branch pipe and the 'dynamic ammonia distribution' control strategy based on the SCR system automatic control method locked by the ammonia spraying sensitive valve, uploads the locking to the control module 303, and the control module 303 controls the operation of the adjusting screw 206.
When the ammonia spraying flow needs to be regulated, the monitoring module 301 monitors the NOx concentration at the outlet, generates a data report, and uploads the data report to the analysis module 302, the analysis module 302 analyzes a "dynamic ammonia distribution" control strategy, and issues the data report to the control module 303, the control module 303 controls the operation of the regulating screw 206 to make the regulating screw forward or backward rotate, drives the regulating slider 207 and the connecting rod 202 to move up and down, regulates the overlapping area between the first small hole 102 and the second small hole 208, and further regulates the ammonia spraying flow.
The foregoing disclosure is only illustrative of one or more preferred embodiments of the present application, and it is not intended to limit the scope of the claims hereof, as persons of ordinary skill in the art will understand that all or part of the processes for practicing the embodiments described herein may be practiced with equivalent variations in the claims, which are within the scope of the application.
Claims (3)
1. An automatic ammonia spraying grille comprises a plurality of outer sleeves and adjusting components, wherein the outer sleeves are respectively arranged in parallel in the same section perpendicular to the flow direction of flue gas, the adjusting components are connected with the outer sleeves, each outer sleeve is provided with a plurality of first small holes, and the automatic ammonia spraying grille is characterized in that,
further comprising a diffusion assembly;
the diffusion assembly comprises a plurality of nozzles, connecting members, diffusion caps and diffusion blades, wherein the nozzles are detachably connected with the outer sleeve and are positioned at the first small holes respectively, the connecting members are connected to each nozzle, the diffusion caps are connected to each connecting member, the outer surface wall of each diffusion cap is fixedly connected with the diffusion blades, and the diffusion blades are distributed in a threaded mode respectively; the diffusion cap is of a funnel structure with a large upper diameter and a small lower diameter, and has elasticity;
the connecting member comprises a first rod and a second rod, and the first rod is fixedly connected to two sides of each nozzle respectively; the side of each first rod, which is far away from the nozzle, is respectively in threaded connection with the second rod;
the connecting member further comprises buckles, wherein one side, far away from the first rods, of each second rod is fixedly connected with the buckle respectively, and the buckle is in sliding connection with the diffusion cap;
the connecting member further comprises a supporting rod and a ball, and one side, close to the buckle, of each second rod is fixedly connected with the supporting rod respectively; and one side of each supporting rod, which is far away from the second rod, is in rolling connection with the ball, and the ball is in rolling connection with the diffusion cap.
2. An automated ammonia injection grid according to claim 1 wherein,
the adjusting assembly comprises an inner sleeve, a connecting rod and a power component, and the inner sleeve is arranged in each outer sleeve; the inner sleeves are respectively and fixedly connected with each other through the connecting rods; the power component is connected with the connecting rod; each inner sleeve is provided with a plurality of second small holes, and the second small holes are adjacent to the first small holes.
3. An automated ammonia injection grid according to claim 2 wherein,
the automatic ammonia injection grid further comprises a control assembly, wherein the control assembly comprises a monitoring module, an analysis module and a control module, the monitoring module is connected with the analysis module, and the analysis module is connected with the control module;
the monitoring module is used for monitoring the concentration of the NOx at the outlet in real time and uploading monitoring data to the analysis module;
the analysis module is used for calculating the ammonia spraying amount according to the concentration of NOx and uploading the ammonia spraying result to the control module;
the control module is used for controlling the rotation quantity of the adjusting screw rod, controlling the moving range of the adjusting sliding block, driving the moving range of the inner sleeve in the outer sleeve and adjusting the overlapping area of the first small hole and the second small hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211252449.8A CN115624862B (en) | 2022-10-13 | 2022-10-13 | Automatic change ammonia injection grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211252449.8A CN115624862B (en) | 2022-10-13 | 2022-10-13 | Automatic change ammonia injection grid |
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| Publication Number | Publication Date |
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| CN115624862A CN115624862A (en) | 2023-01-20 |
| CN115624862B true CN115624862B (en) | 2023-08-18 |
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| CN202211252449.8A Active CN115624862B (en) | 2022-10-13 | 2022-10-13 | Automatic change ammonia injection grid |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820990A1 (en) * | 1998-05-11 | 1999-11-18 | Babcock Anlagen Gmbh | Device in a plant for the reduction of nitrogen oxides |
| CN102179157A (en) * | 2011-05-06 | 2011-09-14 | 东南大学 | Ammonia spraying grate and adjusting method thereof |
| FR3007297A1 (en) * | 2013-06-25 | 2014-12-26 | Lhoist Rech & Dev Sa | METHOD AND DEVICE FOR TREATING GAS BY INJECTION OF PULVERULENT COMPOUND |
| JP2017002753A (en) * | 2015-06-05 | 2017-01-05 | イビデン株式会社 | Diffusion member, exhaust purifying device and use of diffusion member in exhaust purifying device |
| CN207371330U (en) * | 2017-06-12 | 2018-05-18 | 盐城诚达环保工程有限公司 | Denitrating flue gas ammonia-spraying grid structure |
| CN111330444A (en) * | 2020-03-17 | 2020-06-26 | 广州市康笛威节能科技有限公司 | Low-speed swirl hood for ammonia injection grill and ammonia injection grill |
| CN211358322U (en) * | 2019-10-18 | 2020-08-28 | 包头地平线环保科技有限公司 | Equipment for preventing inner wall residue from being stained and adhered for industrial desulfurization device |
| CN214972726U (en) * | 2021-06-21 | 2021-12-03 | 海南大坤环保科技有限公司 | Multistage desulfurization dusting tower |
| CN217016099U (en) * | 2022-04-02 | 2022-07-22 | 湖南元卓环保科技有限公司 | Ammonia spraying grid of SCR denitration system |
-
2022
- 2022-10-13 CN CN202211252449.8A patent/CN115624862B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820990A1 (en) * | 1998-05-11 | 1999-11-18 | Babcock Anlagen Gmbh | Device in a plant for the reduction of nitrogen oxides |
| CN102179157A (en) * | 2011-05-06 | 2011-09-14 | 东南大学 | Ammonia spraying grate and adjusting method thereof |
| FR3007297A1 (en) * | 2013-06-25 | 2014-12-26 | Lhoist Rech & Dev Sa | METHOD AND DEVICE FOR TREATING GAS BY INJECTION OF PULVERULENT COMPOUND |
| JP2017002753A (en) * | 2015-06-05 | 2017-01-05 | イビデン株式会社 | Diffusion member, exhaust purifying device and use of diffusion member in exhaust purifying device |
| CN207371330U (en) * | 2017-06-12 | 2018-05-18 | 盐城诚达环保工程有限公司 | Denitrating flue gas ammonia-spraying grid structure |
| CN211358322U (en) * | 2019-10-18 | 2020-08-28 | 包头地平线环保科技有限公司 | Equipment for preventing inner wall residue from being stained and adhered for industrial desulfurization device |
| CN111330444A (en) * | 2020-03-17 | 2020-06-26 | 广州市康笛威节能科技有限公司 | Low-speed swirl hood for ammonia injection grill and ammonia injection grill |
| CN214972726U (en) * | 2021-06-21 | 2021-12-03 | 海南大坤环保科技有限公司 | Multistage desulfurization dusting tower |
| CN217016099U (en) * | 2022-04-02 | 2022-07-22 | 湖南元卓环保科技有限公司 | Ammonia spraying grid of SCR denitration system |
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