CN206823568U - A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings - Google Patents
A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings Download PDFInfo
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- CN206823568U CN206823568U CN201720267954.8U CN201720267954U CN206823568U CN 206823568 U CN206823568 U CN 206823568U CN 201720267954 U CN201720267954 U CN 201720267954U CN 206823568 U CN206823568 U CN 206823568U
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- ammonia
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- mixing device
- jet mixing
- blender main
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Abstract
The utility model provides a kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings, including blender main body, the blender main body is provided with smoke inlet end and mixed gas outlet end, it is characterized in that, m spray ammonia is installed in the side wall of the blender main body to be responsible for, m >=3, long direction eddy generator is installed on the inwall of the blender main body, spiral board is installed at the smoke inlet end, and the mixed gas outlet end of the blender main body installs the first cowling panel group and the second cowling panel group.The utility model has the advantages of simple in construction, well mixed.
Description
Technical field
The utility model belongs to SCR gas denitrifying technologies field, more particularly to a kind of ammonia for SCR Flue Gas Denitrification Engineerings
Gas jet mixing arrangement.
Background technology
As people have turned into the emphasis mesh of atmosphere pollution control to the growing interest of atmosphere polluting problem, nitrogen oxides
One of mark.In numerous removal of nitrogen oxide technologies, SCR technology (SCR) because its technical maturity, it is reliable,
The advantages that removal efficiency is high, turn into the first choice of gas denitrifying technology.Wherein, the uniform distribution of reducing agent ammonia can both improve denitration
Efficiency, it can also extend the influence of the service life, reduction of catalyst to follow-up equipment, so as to reduce technical costs, therefore, ammonia
Into flue gas injection with flue gas the design of mixing arrangement be one of key factor of this technology.
The patent of Application No. 200780008181.0, disclose a kind of method and dress for being used for the mixing of two gaseous fluids
Put.This method uses plate-like hybrid element, and big flow gas flows through tilting hybrid element and forms vortex, strengthens turbulent closure scheme mistake
Journey.It is to be in tilted layout in the same direction and component size is larger in flue in plate-like hybrid element, VELOCITY DISTRIBUTION is not before and after hybrid element
, it is necessary to longer homogenization distance.
The preposition secondary rectification that Application No. 201120156133.X patent discloses a kind of SCR denitration system is static mixed
Clutch, including be installed on flue inner support frame once, secondary commutator segment group, to lift mixed gas uniformity coefficient, but device
Structure is complex, is unfavorable for installing, overhaul and safeguarding.
The patent of Application No. 201510145544.1, a kind of ammonia spraying and mixing system is disclosed, joined using continuous closo
Siphunculus road and the injection direction perpendicular to flue gas flow direction, being sufficiently mixed for ammonia and flue gas is realized, to remove static mixer
Structure, simplify mixing apparatus, but mixed effect is not high.
Utility model content
In order to solve problem above, the utility model proposes a kind of ammonia injection for SCR Flue Gas Denitrification Engineerings is mixed
Attach together and put, including blender main body, the blender main body are provided with smoke inlet end and mixed gas outlet end, it is characterised in that
M spray ammonia is installed in the side wall of the blender main body to be responsible for, m >=3, longitudinal Vortex hair is installed on the inwall of the blender main body
Spiral board is installed at raw device, the smoke inlet end, the mixed gas outlet end of the blender main body install the first cowling panel group and
Second cowling panel group.
Further, the blender main body material therefor is stainless steel.
Further, volume control device and spray ammonia branch pipe are respectively mounted on the spray ammonia supervisor.
Further, two spray ammonia pipes are respectively mounted on the spray ammonia branch pipe, nozzle is respectively mounted on the spray ammonia pipe.
Further, there is spout on the nozzle, the spout across is distributed, and between injection direction and spray ammonia pipe
Angle α be 0 ° -45 °.
Further, the long direction eddy generator is made up of at least two longitudinal Vortex generating devices being spacedly distributed, institute
Longitudinal Vortex generating device is stated as triangle, trapezoidal, semicircle or half elliptic, longitudinally in each whirlpool generating device and flue gas stream side
To angle β be 30 ° -60 °.
Further, the base length of the longitudinal Vortex generating device is 0.5 times -2 times of its height, and member occurs for longitudinal Vortex
Spacing between part is 3 times of its height.
Further, the spiral board is described to collect on the inside of grey structure along circle by blind plate, swirl vane and the grey structure composition of collection
All uniformly installation swirl vanes, the spiral board center is provided with blind plate.
Further, unloading valve is set in the grey structure of collection.
Further, the rectification panel element of the first cowling panel group and the second cowling panel group is rectangular configuration, two groups
Angle between cowling panel is 90 °.
Ammonia jet mixing device provided by the utility model has the advantages of simple in construction, well mixed.
Brief description of the drawings
Fig. 1 is a kind of structural representation of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings of the utility model；
Fig. 2 is the structural representation of spiral board in the utility model；
Fig. 3 is Fig. 1 A-A to sectional view；
Fig. 4 is the partial enlarged drawing B in Fig. 3；
Fig. 5 is long direction eddy generator top view in the utility model；
Angle βs of the Fig. 6 between longitudinal Vortex generating device and flue gas stream direction schematic diagram.
In figure：1- blenders main body, 2- smoke inlets end, 3- mixed gas outlet ends, 4- spray ammonia supervisor, the control of 4-1- flows
Device, 4-2- spray ammonia branch pipe, 4-3- spray ammonia pipe, 4-4- nozzles, 4-4-1- spouts, 5- long direction eddy generators, 5-1- longitudinal Vortexes hair
Raw element, 6- spiral boards, 6-1- blind plates, 6-2- swirl vanes, 6-3- collection ashes structure, 6-3-1- unloading valves, the cowling panels of 7- first
Group, 8- the second cowling panel groups.
Embodiment
The tool of the ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings a kind of to the utility model below in conjunction with the accompanying drawings
Body embodiment is described in detail, and the embodiment is merely to illustrate the utility model rather than limitation model of the present utility model
Enclose, modification of the those skilled in the art to the various equivalent form of values of the present utility model falls within the application appended claims and limited
Fixed scope.
As shown in figure 1, a kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings, including blender main body 1,
Blender main body 1 is provided with smoke inlet end 2 and mixed gas outlet end 3, between smoke inlet end 2 and mixed gas outlet end 3, successively
It is provided with spiral board 6, m 4 (m >=3) of spray ammonia supervisor, long direction eddy generator 5, the first cowling panel group 7 and second of installation in side wall
Cowling panel group 8.
Blender main body 1, smoke inlet end 2 and the material therefor of mixed gas outlet end 3 are stainless steel.As Fig. 3 is Fig. 1
A-A is to sectional view, m spray ammonia supervisor 4, m >=3 of installation in the side wall of smoke inlet end 2 of blender main body 1, in the present embodiment, pacifies
Fill 3 spray ammonia supervisors, 4,3 spray ammonia supervisors 4 mutually to block on a horizontal plane, flow is respectively mounted on each spray ammonia supervisor 4
Control device 4-1 and spray ammonia branch pipe 4-2.Installed on each spray ammonia branch pipe 4-2 on two sprays ammonia pipe 4-3, each spray ammonia pipe 4-3
Be respectively mounted nozzle 4-4, there is spout 4-4-1 on nozzle 4-4, as Fig. 4 for spray Guan Shangsi adjacent nozzle schematic diagram of ammonia, figure center
Airflow direction when arrow is sprays, the distribution of spout 4-4-1 across, and the angle α between injection direction and spray ammonia pipe 4-3
For 0 ° -45 °, to form swirling eddy, strengthen mixed effect.
Spiral board 6 is installed at smoke inlet end 2, and such as Fig. 2, spiral board 6 is from inside to outside by blind plate 6-1, swirl vane 6-2 and collection
Grey structure 6-3 compositions, integrate grey structure 6-3 as circular ring, are connected with blender main body 1, and be provided with unloading valve 6-3-
1；Collect on the inside of grey structure 6-3 for circumferentially equally distributed multiple swirl vane 6-2；The center of spiral board 6 is provided with blind plate 6-1,
With the soundness of reinforcement structure.Spiral board 6 can improve flue gas turbulence intensity, beneficial to hereafter being mixed with ammonia, in addition, spiral board
6 can also aid in removing part particulate matter in flue gas, are collected by collecting grey structure 6-3, are periodically discharged via unloading valve 6-3-1, with
Reduce the abrasion of follow-up equipment.
Spray the top of ammonia supervisor 4, long direction eddy generator 5 be installed on the two side of gaseous mixture main body 1, long direction eddy generator 5 by
At least two longitudinal Vortex generating device 5-1 being spacedly distributed along inwall horizontal direction are formed, if Fig. 5 is that top is overlooked downwards
Figure, gaseous mixture main body 1 are positive square flue structure, and longitudinal Vortex generating device 5-1 is triangle, trapezoidal, semicircle or semiellipse
The stainless steel laminated structure of shape, in the present embodiment, longitudinal Vortex generating device 5-1 is half elliptic, such as Fig. 6, and whirlpool is sent out longitudinally in each
Angle β between raw element 5-1 and flue gas stream direction is 30 ° -60 °, and longitudinal Vortex generating device 5-1 base length is its height
0.5 times -2 times, the spacing between longitudinal Vortex generating device 5-1 is 3 times of its height.
The mixed gas outlet end 3 of blender main body 1 installs the first cowling panel group 7 and the second cowling panel group 8, the first cowling panel
The rectification panel element of the cowling panel group 8 of group 7 and second is rectangular configuration, and the angle between two groups of cowling panels is 90 °, two-stage rectification
Plate, it is more uniformly distributed the flow velocity before the gaseous mixture arrival Catalytic Layer of outflow.
The course of work of the present utility model is that flue gas is entered by smoke inlet end 2, and swirling eddy is formed by spiral board 6,
And remove the partial particulate thing in flue gas；Ammonia is via spray ammonia supervisor 4, volume control device 4-1, spray ammonia branch pipe 4-2, spray ammonia pipe
4-3 and nozzle 4-4, is spurted into blender main body 1 with the direction vertical with flue gas, with being from bottom to top responsible for 4, stream by spray ammonia
Amount control device 4-1, spray ammonia branch pipe 4-2, the flue gas mixing for spraying ammonia pipe 4-3 and nozzle 4-4；Mixed gas is further across longitudinal direction
Eddy generator 5, strengthen the disturbance of downstream fume gas, realize being sufficiently mixed for flue gas and ammonia, and have and remove partial particulate in flue gas
The effect of thing；Well-mixed gas flows through the first cowling panel group 7 and the second cowling panel group 8, makes the gas of outflow blender main body 1
Rate of flow of fluid is uniformly distributed, and flows out blender main body 1 via mixed gas outlet end 3.Collect grey structure 6-3 to collect, discharge blender master
The flue gas particles that body 1 retains.
The utility model has the advantages that：
1. smoke inlet end is provided with spiral board to improve flue gas turbulence intensity, and has the effect for removing particulate matter in flue gas,
Reduce its abrasion to follow-up equipment；
2. spraying ammonia supervisor and each ammonia jet pipe and its top nozzle with being uniformly distributed on blender main body section, it is beneficial to cigarette
Gas mixes with the uniform of ammonia；
3. spout set by nozzle is in crossing distribution, angle is 0 ° -45 ° between its injection direction and spray ammonia pipe, to be formed
Swirling eddy, strengthen gas mixing effect；
4. blender main body is provided with long direction eddy generator, the mixed effect of gas is further enhanced.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
Detail in above-mentioned embodiment, can be to skill of the present utility model in range of the technology design of the present utility model
Art scheme carries out a variety of simple variants, and these simple variants belong to the scope of protection of the utility model.
Claims (10)
1. a kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings, including blender main body (1), the blender
Main body (1) is provided with smoke inlet end (2) and mixed gas outlet end (3), it is characterised in that the side wall of the blender main body (1)
Upper m spray ammonia of installation is responsible for (4), m >=3, and long direction eddy generator (5), the cigarette are installed on the inwall of the blender main body (1)
Gas arrival end (2) installation spiral board (6), the mixed gas outlet end (3) of the blender main body (1) install the first cowling panel group
And the second cowling panel group (8) (7).
2. ammonia jet mixing device according to claim 1, it is characterised in that material used in the blender main body (1)
Expect for stainless steel.
3. ammonia jet mixing device according to claim 1, it is characterised in that be respectively mounted on the spray ammonia supervisor (4)
Volume control device (4-1) and spray ammonia branch pipe (4-2).
4. ammonia jet mixing device according to claim 3, it is characterised in that pacify on the spray ammonia branch pipe (4-2)
Two spray ammonia pipes (4-3) are filled, nozzle (4-4) is respectively mounted on the spray ammonia pipe (4-3).
5. ammonia jet mixing device according to claim 4, it is characterised in that have spout (4- on the nozzle (4-4)
4-1), spout (4-4-1) the across distribution, and the angle α between injection direction and spray ammonia pipe (4-3) is 0 ° -45 °.
6. ammonia jet mixing device according to claim 1, it is characterised in that the long direction eddy generator (5) is by extremely
The few two longitudinal Vortex generating devices (5-1) being spacedly distributed are formed, and the longitudinal Vortex generating device (5-1) is triangle, ladder
Shape, semicircle or half elliptic, the angle β between whirlpool generating device (5-1) and flue gas stream direction is 30 ° -60 ° longitudinally in each.
7. ammonia jet mixing device according to claim 6, it is characterised in that the longitudinal Vortex generating device (5-1)
Base length be 0.5 times -2 times of its height, the spacing between longitudinal Vortex generating device (5-1) is 3 times of its height.
8. ammonia jet mixing device according to claim 1, it is characterised in that the spiral board (6) is by blind plate (6-
1), swirl vane (6-2) and grey structure (6-3) composition of collection, it is described to collect grey structure (6-3) inner side circumferentially uniform installation eddy flow leaf
Piece (6-2), spiral board (6) center are provided with blind plate (6-1).
9. ammonia jet mixing device according to claim 8, it is characterised in that set on the grey structure (6-3) of collection
Unloading valve (6-3-1).
10. ammonia jet mixing device according to claim 1, it is characterised in that the first cowling panel group (7) and
The rectification panel element of two cowling panel groups (8) is rectangular configuration, and the angle between two groups of cowling panels is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720267954.8U CN206823568U (en) | 2017-03-20 | 2017-03-20 | A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720267954.8U CN206823568U (en) | 2017-03-20 | 2017-03-20 | A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings |
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| Publication Number | Publication Date |
|---|---|
| CN206823568U true CN206823568U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720267954.8U Active CN206823568U (en) | 2017-03-20 | 2017-03-20 | A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106902660A (en) * | 2017-03-20 | 2017-06-30 | 北京清新环境技术股份有限公司 | A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings |
| CN112807999A (en) * | 2021-01-13 | 2021-05-18 | 沈阳铝镁设计研究院有限公司 | Low-temperature denitration system of aluminum oxide roasting furnace |
-
2017
- 2017-03-20 CN CN201720267954.8U patent/CN206823568U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106902660A (en) * | 2017-03-20 | 2017-06-30 | 北京清新环境技术股份有限公司 | A kind of ammonia jet mixing device for SCR Flue Gas Denitrification Engineerings |
| CN112807999A (en) * | 2021-01-13 | 2021-05-18 | 沈阳铝镁设计研究院有限公司 | Low-temperature denitration system of aluminum oxide roasting furnace |
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