CN206715693U - A kind of injection apparatus being used in SCR denitration ammonia-spraying grid - Google Patents
A kind of injection apparatus being used in SCR denitration ammonia-spraying grid Download PDFInfo
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- CN206715693U CN206715693U CN201720543591.6U CN201720543591U CN206715693U CN 206715693 U CN206715693 U CN 206715693U CN 201720543591 U CN201720543591 U CN 201720543591U CN 206715693 U CN206715693 U CN 206715693U
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Abstract
The utility model proposes a kind of injection apparatus being used in SCR denitration ammonia-spraying grid, belong to gas denitrifying technology field.Including a blast tube, several nozzle assemblies are uniformly arranged on blast tube, each nozzle assembly includes first jet, second nozzle, 3rd nozzle, angle be present in the injection direction of the injection direction of the first jet and the second nozzle, angle be present in the injection direction of the injection direction of the first jet and the 3rd nozzle, angle be present in the injection direction of the injection direction of the second nozzle and the 3rd nozzle, new nozzle ejection efficiency is high, be advantageous to the Quick uniform mixing of ammonia and flue gas, by the nozzle that multiple different directions are arranged on a segment pipe, arrange that nozzle is closeer on same root pipeline, increase the multidirectional of injection, multiple spot positional, mixing uniformity.
Description
Technical field
It the utility model is related to SCR denitration technical field, and in particular to a kind of injection being used in SCR denitration ammonia-spraying grid
Device.
Background technology
Need to spray into the Benitration reactor equipped with catalyst after ammonia is mixed with air in SCR denitration, it is general using spray
The form of mouth pipe (2) and nozzle (1) is sprayed, i.e. ammonia-spraying grid.As shown in Figure 1, 2.Arranged on each blast tube (2) axial direction different
The nozzle (1) of quantity, a nozzle (1) is each radially arranged, nozzle direction is flow of flue gas direction.Ammonia-spraying grid is covered with whole
Individual flue cross section, it ensure that ammonia air Mixture can uniformly mix with flue gas, and can be enough, without interruption.
The nozzle spray direction of ammonia-spraying grid is single in the prior art, and ejection efficiency is low.
Utility model content
In order to solve above-mentioned technical problem, the utility model provides a kind of spray ammonia being used in SCR denitration ammonia-spraying grid
Device, its object is to a kind of, there is provided ammonia-gas spraying device of multidirectional injection, by the device, solve that injection direction is single, injection
The low problem of efficiency.
The utility model provides a kind of injection apparatus being used in SCR denitration ammonia-spraying grid, and it is used for spray ammonia lattice in flue
On grid, including a blast tube, several nozzle assemblies are uniformly arranged on the blast tube；
Each nozzle assembly includes first jet, second nozzle, the 3rd nozzle；
The first jet, the second nozzle, the 3rd nozzle are fixed on the blast tube；
The injection direction of the first jet, the injection direction of the second nozzle, the injection direction of the 3rd nozzle and institute
State that blast tube is vertical, angle be present in the injection direction of the injection direction of the first jet and the second nozzle, and described first
There is angle in the injection direction of the injection direction of nozzle and the 3rd nozzle, the injection direction of the second nozzle and described the
Angle be present in the injection direction of three nozzles.
Further improved as the utility model, the injection of the injection direction of the first jet and the second nozzle
The angle in direction is A, 0 degree of 90 degree of ﹤ A ﹤, the angle of the injection direction of the first jet and the injection direction of the 3rd nozzle
For B, 0 degree of 90 degree of ﹤ B ﹤, the angle of the injection direction of the second nozzle and the injection direction of the 3rd nozzle is C, 0 degree of ﹤ C ﹤
180 degree.
Further improved as the utility model, 30 degree≤A≤45 degree, 30 degree≤B≤45 degree, 60 degree≤C≤90 degree.
Further improved as the utility model, between the first jet, the second nozzle, described 3rd nozzle etc.
Away from being fixed on the blast tube.
Further improved as the utility model, the first jet, the second nozzle, the 3rd nozzle and institute
The fixed form for stating playpipe is welding or threaded connection.
Further improved as the utility model, the injection direction of the first jet is identical with flow of flue gas direction.
Further improved as the utility model, the blast tube is perpendicular to flue gas flow direction direction.
The utility model has the advantages that：Injection apparatus sets the nozzle of multiple different directions, and ejection efficiency is high,
Be advantageous to the Quick uniform mixing of ammonia and flue gas, by arranging the nozzle of multiple different directions, same root on a segment pipe
Arrange that nozzle is closeer, increases the multidirectional of injection, multiple spot positional, mixing uniformity on pipeline.
Brief description of the drawings
Fig. 1 is the existing injection apparatus structural representation being used in SCR denitration ammonia-spraying grid in background technology.
Fig. 2 is that the nozzle arrangements section of the existing injection apparatus being used in SCR denitration ammonia-spraying grid in background technology shows
It is intended to.
Fig. 3 is the injection apparatus structural representation being used in SCR denitration ammonia-spraying grid in the utility model first embodiment
Figure.
Fig. 4 is the nozzle knot of the injection apparatus being used in SCR denitration ammonia-spraying grid in the utility model first embodiment
Structure diagrammatic cross-section.
In figure, 1, first jet；2nd, blast tube；3rd, second nozzle；4th, the 3rd nozzle.
Embodiment
Below in conjunction with the accompanying drawings, and specific truth example is described in further detail to the present invention.
Embodiment 1, as shown in Figure 3,4, a kind of injection apparatus being used in SCR denitration ammonia-spraying grid, it is used in flue
On ammonia-spraying grid, it is characterised in that including a blast tube 2, several nozzle assemblies are set on blast tube 2；
Each nozzle assembly includes first jet 1, second nozzle 3, the 3rd nozzle 4；
First jet 1, second nozzle 3, the 3rd nozzle 4 are fixed on blast tube 2；
First jet 1, second nozzle 3, the 3rd nozzle 4 are equidistantly fixed on blast tube 2.
The injection direction of first jet 1, the injection direction of second nozzle 3, the injection direction and blast tube 2 of the 3rd nozzle 4
Vertically, there is angle in the injection direction of the injection direction of first jet 1 and second nozzle 3, the injection direction of first jet 1 and the
There is angle in the injection direction of three nozzles 4, the injection direction of the injection direction of second nozzle 3 and the 3rd nozzle 4 has angle；
The angle of the injection direction of first jet 1 and the injection direction of second nozzle 3 is A, 0 degree of 90 degree of ﹤ A ﹤, it is preferable that 30
Degree≤A≤45 degree, ensure that ammonia mixes more uniform with flue gas, the injection of the injection direction of first jet 1 and the 3rd nozzle 4
The angle in direction is B, 0 degree of 90 degree of ﹤ B ﹤, it is preferable that 30 degree≤B≤45 degree, ensures ammonia mixes with flue gas more uniform second
The angle of the injection direction of the injection direction of nozzle 3 and the 3rd nozzle 4 is C, 0 degree of ﹤ C ﹤ 180 degree, it is preferable that 60 degree≤C≤90 degree,
It is more uniform to ensure that ammonia mixes with flue gas；
First jet 1, second nozzle 3, the 3rd nozzle 4 for welding or are threadedly coupled with the fixed form of playpipe 2；
Prolong the sectional view in B-B directions in Fig. 3 as shown in figure 4, the direction of arrow be smoke discharging pipe in flow of flue gas direction, first
The injection direction of nozzle 1 is identical with flow of flue gas direction；
Blast tube 2 is perpendicular to flue gas flow direction direction.
The utility model has the advantages that：New nozzle ejection efficiency is high, is advantageous to the fast of ammonia and flue gas
Fast uniformly mixing, by arranging the nozzle of multiple different directions on a segment pipe, arrange that nozzle is closeer on same root pipeline, increase
Add the multidirectional of injection, multiple spot positional, mixing uniformity, reduce the level of ammonia-spraying grid arrangement, reduce flue gas circulation
Resistance.
Condition of the those skilled in the art in the spirit and scope of the present utility model for not departing from claims determination
Under, various modifications can also be carried out to above content.Therefore the scope of the utility model is not limited in saying for the above
It is bright, but determined by the scope of claims.
Claims (7)
1. a kind of injection apparatus being used in SCR denitration ammonia-spraying grid, it is used for ammonia-spraying grid in flue, it is characterised in that
Including a blast tube (2), several nozzle assemblies are uniformly arranged on the blast tube (2)；
Each nozzle assembly includes first jet (1), second nozzle (3), the 3rd nozzle (4)；
The first jet (1), the second nozzle (3), the 3rd nozzle (4) are fixed on the blast tube (2)；
The injection direction of the first jet (1), the injection direction of the second nozzle (3), the injection direction of the 3rd nozzle (4)
Vertical with the blast tube (2), the injection direction of the first jet (1) exists with the injection direction of the second nozzle (3)
Angle, second spray be present with the injection direction of the 3rd nozzle (4) in angle, the injection direction of the first jet (1)
Angle be present in the injection direction of mouth (3) and the injection direction of the 3rd nozzle (4).
2. injection apparatus according to claim 1, it is characterised in that the injection direction of the first jet (1) with it is described
The angle of the injection direction of second nozzle (3) is A, 0 degree of 90 degree of ﹤ A ﹤, the injection direction and the described 3rd of the first jet (1)
The angle of the injection direction of nozzle (4) is B, 0 degree of 90 degree of ﹤ B ﹤, injection direction and the 3rd nozzle of the second nozzle (3)
(4) angle of injection direction is C, 0 degree of ﹤ C ﹤ 180 degree.
3. injection apparatus according to claim 2, it is characterised in that 30 degree≤A≤45 degree, 30 degree≤B≤45 degree, 60 degree
≤ C≤90 degree.
4. injection apparatus according to claim 1, it is characterised in that the first jet (1), the second nozzle (3),
3rd nozzle (4) is equidistantly fixed on the blast tube (2).
5. injection apparatus according to claim 1, it is characterised in that the first jet (1), the second nozzle (3),
3rd nozzle (4) for welding or is threadedly coupled with the fixed form of the blast tube (2).
6. injection apparatus according to claim 1, it is characterised in that the injection direction and flue gas of the first jet (1)
Flow direction is identical.
7. injection apparatus according to claim 1, it is characterised in that the blast tube (2) is perpendicular to flue gas flow direction direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543591.6U CN206715693U (en) | 2017-05-16 | 2017-05-16 | A kind of injection apparatus being used in SCR denitration ammonia-spraying grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543591.6U CN206715693U (en) | 2017-05-16 | 2017-05-16 | A kind of injection apparatus being used in SCR denitration ammonia-spraying grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206715693U true CN206715693U (en) | 2017-12-08 |
Family
ID=60512126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720543591.6U Expired - Fee Related CN206715693U (en) | 2017-05-16 | 2017-05-16 | A kind of injection apparatus being used in SCR denitration ammonia-spraying grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206715693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015889A1 (en) * | 2021-08-13 | 2023-02-16 | 交通运输部天津水运工程科学研究所 | Reductant multi-position layered injection structure for ship denitration |
-
2017
- 2017-05-16 CN CN201720543591.6U patent/CN206715693U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015889A1 (en) * | 2021-08-13 | 2023-02-16 | 交通运输部天津水运工程科学研究所 | Reductant multi-position layered injection structure for ship denitration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |