CN206526690U - One kind is applied to SCR denitration spiral vortex type gas mixing system - Google Patents
One kind is applied to SCR denitration spiral vortex type gas mixing system Download PDFInfo
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- CN206526690U CN206526690U CN201720122756.2U CN201720122756U CN206526690U CN 206526690 U CN206526690 U CN 206526690U CN 201720122756 U CN201720122756 U CN 201720122756U CN 206526690 U CN206526690 U CN 206526690U
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- flue
- vortex
- mixing arrangement
- type gas
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000007769 metal material Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 42
- 229910021529 ammonia Inorganic materials 0.000 abstract description 21
- 239000003546 flue gas Substances 0.000 abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000007789 gas Substances 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
One kind is applied to SCR denitration spiral vortex type gas mixing system, including vortex mixing arrangement, the vortex mixing arrangement is arranged in flue, the axis of vortex mixing arrangement and flue is vertically arranged, vortex mixing arrangement includes framework and several mixed cells, and mixed cell includes six blades and one coaxial, and the uniform annular array distribution of six blades is in coaxial periphery, mixed cell is in the manhole on framework, the coaxial center located at manhole；Flue, which is connected, is provided with reducing agent nozzle hole in SCR reactors, the air channel between vortex mixing arrangement and SCR reactors；Vortex mixing arrangement should be set in flue suitable for SCR denitration spiral vortex type gas mixing system, the vortex formed using flue gas is sufficiently mixed to reducing agent ammonia, reducing agent jet pipe quantity is accordingly reduced simultaneously and bore increase, nozzle are without stifled grey risk, Maintenance free, denitration efficiency is effectively improved, is worth promoting.
Description
Technical field
The utility model is related to SCR denitration technical field, especially a kind of to be applied to SCR denitration spiral vortex type gas mixing system
System.
Background technology
Traditional ammonia grating type blender, ammonia-spraying grid is installed on and led to inside the flue of SCR reactors, by several
Vertically arranged reducing agent jet pipe and horizontally disposed reducing agent jet pipe composition, pipe are provided with certain amount nozzle.The reduction per road
Agent jet pipe is designed with adjusting means, the matching of NOx distribution as far as possible in the distribution of the ammonia of penetrating and flue gas so that ammonia nitrogen mol ratio
Optimize.But pass through engineering operation number it has been found that having the disadvantages that：First, during the small spray nozzle clogging phenomenon of ammonia-spraying grid spout
There is generation；2nd, spray ammonia pressure, along duct orientation distribution gradient, gradually reduces, causes ammonia spraying amount at spray each jet hole of ammonia pipeline
Uneven i.e. ammonia solubility skewness；To sum up situation easily causes ammonia and mixes uneven with flue gas, so as to reduce SCR denitration
Efficiency.While number of partitions is more, system fading margin is complicated.In summary, traditional ammonia grating type blender be using flue gas from
Right turbulent flow is mixed with ammonia, is produced and is disturbed, thus mix, even results it is not notable.
Utility model content
The utility model aims to provide one kind and vortex mixing arrangement is set in flue, and the vortex pair formed using flue gas is gone back
Former agent ammonia is sufficiently mixed, and effectively improve denitration efficiency is applied to SCR denitration spiral vortex type gas mixing system.
To achieve the above object, the utility model provides following technical scheme：One kind is applied to SCR denitration spiral vortex type gas
Hybrid system, including vortex mixing arrangement, the vortex mixing arrangement are arranged in flue, the axle of vortex mixing arrangement and flue
Line is vertically arranged, and vortex mixing arrangement includes framework and several mixed cells, and mixed cell includes six blades and one is coaxial,
The uniform annular array distribution of six blades is in coaxial periphery, and mixed cell is coaxial to be located in the manhole on framework
The center of manhole；Flue is connected in SCR reactors, the air channel between vortex mixing arrangement and SCR reactors provided with reduction
Agent nozzle hole.
It is used as further scheme of the present utility model：The blade is radian trapezoid blade, and root edge is curved, outer rim width
More than inner edge width.
It is used as further scheme of the present utility model：The vortex mixing arrangement is connected with flue flange, and framework is arranged on
On the inside of flue cross section, the edge of framework is flange arrangement.
It is used as further scheme of the present utility model：The framework is corrosion-and high-temp-resistant metal material.
It is used as further scheme of the present utility model：The outer rim of the blade is fixedly connected with framework, blade and it is coaxial
It is fixed structure.
It is used as further scheme of the present utility model：The blade is corrosion-and high-temp-resistant metal material or high temperature resistant corrosion resistant
Lose non-metallic material.
Compared with prior art, the beneficial effects of the utility model are：SCR denitration spiral vortex type gas mixing system should be applied to
System sets vortex mixing arrangement in flue, and being sufficiently mixed for ammonia and flue gas is realized using a kind of vortex principle, rotation is utilized
The raw forced disturbance of miscarriage, promotes Convention diffusion process, strengthens the molecule diffusion between mixed gas so that horizontal in catalyst inlet
Ammonia concentration and velocity of flue gas, which are realized, at section is evenly distributed, it is achieved thereby that reducing agent ammonia and flue gas are sufficiently mixed uniform journey
Degree, and the escaping of ammonia phenomenon caused by ammonia density skewness subregion occurs excessively effectively is improved, catalyst is risen
To protective effect, while reducing the pre- loading amount of catalyst, the replacement period of catalyst is extended, denitration efficiency is improved, reduced
Investment and operational management cost.
This utility device simple structure, control is easy, and debug time is short, and wide using scope, cost is low, compared with conventional grates cigarette
Atmidometer is reduced.The vortex formed using flue gas is sufficiently mixed to reducing agent ammonia, while reducing agent jet pipe quantity accordingly subtracts
Less and bore increase, nozzle without stifled grey risk, Maintenance free is effectively improved denitration efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of vortex mixing arrangement of the present utility model；
Fig. 3 is actual effect figure of the present utility model.
In figure：In Fig. 1：1- flue gases, 2- vortexs mixing arrangement, 3- reducing agents nozzle hole, 4- flues, 5- catalyst layers, 6-
SCR reactors；In Fig. 2：21- frameworks, 22- blades, 23- are coaxial.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Refer in Fig. 1-3, the utility model embodiment, one kind is applied to SCR denitration spiral vortex type gas mixing system, bag
Vortex mixing arrangement 2 is included, the vortex mixing arrangement 2 is arranged in flue 4, and vortex mixing arrangement 2 is vertical with the axis of flue 4
Set, vortex mixing arrangement 2 includes framework 21 and several mixed cells, and mixed cell includes six blades 22 and one coaxial
23, the uniform annular array distribution of six blades 22 is in coaxial 23 periphery, and mixed cell is located in the manhole on framework 21,
Coaxial 23 are located at the center of manhole；The connection SCR of flue 4 reactors 6, between vortex mixing arrangement 2 and SCR reactors 6
Reducing agent nozzle hole 3 is provided with air channel.
Above-mentioned, blade 22 is radian trapezoid blade 22, and root edge is curved, and outer rim width is more than inner edge width.
It is above-mentioned, provided with four layers of catalyst layer 5 in SCR reactors 6, the SCR reactors 6 of the top of every layer of catalyst layer 5
Thief hole is provided with outer wall.
Above-mentioned, vortex mixing arrangement 2 is connected with the flange of flue 4, and framework 21 is arranged on the inside of the cross section of flue 4, framework 21
Edge be form of flanges.Dismounting and change in the future is easy in flange connection, and framework 21 is corrosion-and high-temp-resistant metal material.
Above-mentioned, the outer rim of blade 22 is fixedly connected with framework 21（Can using welding by the way of or other fixed forms）, leaf
Piece 22 and coaxial 23 is fixed structure, is in a fixed position, without spin.
Radian trapezoid blade 22 arranges composition, the trapezoidal Combination efficiency of blade 22 with coaxial 23 by certain angle rule
Fruit is significantly.Number, inclined angle and the projection overlapping degree of blade 22 for mixed cell are by CFD numerical computations and simulation
Experiment carries out analysis and carries out specific aim adjustment according to Practical Project operating mode, and this is also a feature of this patent, wherein mixing is single
First number, inclined angle and the projection overlapping degree of blade 22 are related to the drag size produced when flue gas 1 flows through, the air-flow of flue gas 1
Form the power of eddy flow interference and the lasting distance of eddy flow mixing.
The device and the position of reducing agent nozzle hole 3 are moderate, and blade 22 is that corrosion-and high-temp-resistant metal material or high temperature resistant are resistance to
Corrode non-metallic material.The device plays guide functions simultaneously.
, be according between the flow velocity of flue gas 1 (V), regulation hybrid element reducing agent nozzle exit in a word in Practical Project
Distance (1) and optimization ammonia jet velocity (V'), it is ensured that ammonia mixes diffusion with the uniform of flue gas 1.
Operation principle and its application method of the present utility model：Vortex mixing arrangement 2 is pacified by the connected mode of flange
Loaded in flue 4, it is made up of multiple mixed cells, each mixed cell there are six radian trapezoid blades 22 to be advised according to certain angle
Rule arrangement, reducing agent jet pipe from the wall of flue 4 insertion flue 4 in, flue gas 1 from the import of flue 4 flow into, by during device due to being inclined
The barrier effect of oblique arrangement and cambered trapezoid blade 22, adjacent cells is in opposite direction in addition, and each air-flow of stock flue gas 1 passes through
When produce skew respectively and form the symmetrical eddy flow of multiple opposite directions, while reducing agent nozzle hole 3 is sparged into towards the import of flue 4
Ammonia directly spray at eddy flow generation, rotating diameter becomes larger, and the strength rotation disturbance formed by eddy flow makes leading portion cigarette
Ammonia is mixed after the dilution that gas 1 sprays with reducing agent nozzle hole 3, and the reverse symmetry eddy flow that adjacent mixed cell is produced is mutual
Effect promotes two media to be further sufficiently mixed（Vortex principle is that, by exchanging media location, eddy diffusivity carries out component biography
Pass, the degree of irregularity of mixture is reduced to dissipation whirlpool in itself, finally due to the diffusion of molecule, realize on molecular scale
Homogenizing）, reacted in the lump into SCR bodies.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. one kind is applied to SCR denitration spiral vortex type gas mixing system, including vortex mixing arrangement, it is characterised in that the rotation
Whirlpool mixing arrangement is arranged in flue, and the axis of vortex mixing arrangement and flue is vertically arranged, and vortex mixing arrangement includes framework
With several mixed cells, mixed cell includes six blades and one coaxial, and the uniform annular array distribution of six blades is in coaxial
Periphery, mixed cell is in the manhole on the framework, the coaxial center located at manhole；Flue connection SCR reactions
Reducing agent nozzle hole is provided with device, the air channel between vortex mixing arrangement and SCR reactors.
2. according to claim 1 be applied to SCR denitration spiral vortex type gas mixing system, it is characterised in that the blade
For radian trapezoid blade, root edge is curved, and outer rim width is more than inner edge width.
3. according to claim 1 be applied to SCR denitration spiral vortex type gas mixing system, it is characterised in that the vortex
Mixing arrangement is connected with flue flange, and framework is arranged on the inside of flue cross section, and the edge of framework is flange arrangement.
4. according to claim 1 be applied to SCR denitration spiral vortex type gas mixing system, it is characterised in that the framework
For corrosion-and high-temp-resistant metal material.
5. according to claim 1 be applied to SCR denitration spiral vortex type gas mixing system, it is characterised in that the blade
Outer rim be fixedly connected with framework, blade and it is coaxial be fixed structure.
6. according to claim 1 be applied to SCR denitration spiral vortex type gas mixing system, it is characterised in that the blade
For corrosion-and high-temp-resistant metal material or corrosion-and high-temp-resistant non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720122756.2U CN206526690U (en) | 2017-02-10 | 2017-02-10 | One kind is applied to SCR denitration spiral vortex type gas mixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720122756.2U CN206526690U (en) | 2017-02-10 | 2017-02-10 | One kind is applied to SCR denitration spiral vortex type gas mixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206526690U true CN206526690U (en) | 2017-09-29 |
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ID=59916468
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720122756.2U Expired - Fee Related CN206526690U (en) | 2017-02-10 | 2017-02-10 | One kind is applied to SCR denitration spiral vortex type gas mixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206526690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173721A (en) * | 2018-10-17 | 2019-01-11 | 浙江德创环保科技股份有限公司 | A kind of flue gas eddy flow redistribution formula Benitration reactor |
-
2017
- 2017-02-10 CN CN201720122756.2U patent/CN206526690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173721A (en) * | 2018-10-17 | 2019-01-11 | 浙江德创环保科技股份有限公司 | A kind of flue gas eddy flow redistribution formula Benitration reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: Room 1505, building 22, Hanlin guantianxia, No. 88, Hongqi Street, Qiaoxi District, Shijiazhuang City, Hebei Province Patentee after: Hebei do Wei Sheng Environmental Protection Technology Co.,Ltd. Address before: Shijiazhuang City, Hebei Province, West Bridge 050000 Hongqi Street No. 88 imperial view of the world No. 15 layer 22 Patentee before: HEBEI HENGSHANG ENVIRONMENTAL PROTECTION EQUIPMENT TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 |