CN206621994U - A kind of SCR system cigarette, ammonia gaseous mixture even distribution device - Google Patents
A kind of SCR system cigarette, ammonia gaseous mixture even distribution device Download PDFInfo
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- CN206621994U CN206621994U CN201720123484.8U CN201720123484U CN206621994U CN 206621994 U CN206621994 U CN 206621994U CN 201720123484 U CN201720123484 U CN 201720123484U CN 206621994 U CN206621994 U CN 206621994U
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Abstract
The utility model discloses a kind of SCR system cigarette, ammonia gaseous mixture even distribution device, it includes air inlet short tube, connecting tube, connect short tube and mixing tube, one end of the air inlet short tube is connected with the ammonia mixing duct of outside, the other end is connected with described connecting tube, connecting tube is connected by connecting short tube with the mixing tube, the end connection flue of mixing tube, the angle steel as scuff-resistant coating is provided with the lower section of mixing tube, some jet pipes and diffusion steel plate are distributed with above mixing tube, the jet pipe distinguishes oblique weld on mixing tube, and adjacent jet pipe is arranged at left and right sides of mixing tube with different incline directions, the diffusion steel plate is arranged on the top of jet pipe, and its top is provided with venthole.The utility model improves the mixture homogeneity of flue gas, ammonia, greatly reduces prior art because the mixing of part is uneven, causes boiler flue corrosion situation.
Description
Technical field
A kind of SCR system cigarette, ammonia gaseous mixture even distribution device are the utility model is related to, belongs to flue gas denitrification system technology neck
Domain.
Background technology
SCR system cigarette, ammonia gaseous mixture even distribution device widely use in denitration flue gas system, be a kind of flue gas of main flow,
Ammonia hybrid system.Hybrid system generally existing problems with use：
(1) flue gas mixing is not abundant enough；Traditional flue gas, ammonia hybrid system are to consider the resistance of ammonia outlet in design
In 3000-5000Pa or so, flue gas and ammonia is allowed smoothly to combine, degree of mixing etc. is not very uniform.Ammonia with smoke contacts face
It is forward to contact, is mixed by flue gas with the pressure difference of ammonia, because the operation air pressure of flue gas is in 1000Pa or so, is often being mixed
During easily cause ammonia central-injection region mixed with flue gas inequality state.
(2) installation and repairing is complicated；Conventional smoke, ammonia blender, all it is that injection mould is set according to the quantity of ammonia pipeline
The quantity of block, to ensure degree of mixing, the module often set is more, causes equipment in installation and maintenance process, tedious process.
The content of the invention
The purpose of this utility model is to provide a kind of new SCR system cigarette, ammonia gaseous mixture even distribution device, solves existing skill
Above two large problems present in art.
The utility model adopts the technical scheme that：A kind of SCR system cigarette, ammonia gaseous mixture even distribution device, it includes air inlet
Short tube, connecting tube, short tube and mixing tube are connected, one end of the air inlet short tube is connected with the ammonia mixing duct of outside, the other end
It is connected with described connecting tube, connecting tube is connected by connecting short tube with the mixing tube, the end connection cigarette of mixing tube
Road, the angle steel as scuff-resistant coating is provided with the lower section of mixing tube, some jet pipes and diffusion steel plate is distributed with above mixing tube,
The jet pipe distinguishes oblique weld on mixing tube, and adjacent jet pipe is arranged on mixing tube or so two with different incline directions
Side, the diffusion steel plate is arranged on the top of jet pipe, and its top is provided with venthole.
The jet pipe is welded on the left and right sides of mixing tube with 30 ° of angle of inclination respectively.
The end of the mixing tube is provided with installation steel plate, and mixing tube is welded by installing steel plate with walling of flue.
The both sides of the mixing tube are provided with supporting steel plate, and supporting steel plate welds as the support of whole equipment with flue.
Angle steel also is provided with below the connecting tube.
The beneficial effects of the utility model are as follows：
The utility model can improve the mixture homogeneity of flue gas, ammonia, greatly reduce prior art mixing due to part
Inequality is closed, causes boiler flue corrosion situation.
Secondly, the utility model uses modularized design in design, for that need not change this during different projects
The component of device, it is possible to increase the installation of project and maintenance efficiency, greatly reduce the expense of user's maintenance.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is top view of the present utility model.
Fig. 4 is side view of the present utility model.
Fig. 5 is the schematic layout pattern of jet pipe and diffusion steel plate in the utility model.
In figure：1- air inlet short tubes, 2- connecting tubes, 3- connection short tubes, 4- mixing tubes, 5- angle steel, 6- jet pipes, 7- diffusion steel
Plate, 8- installation steel plates, 9- supporting steel plates.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 5, a kind of SCR system cigarette, ammonia gaseous mixture even distribution device, it includes air inlet short tube 1, connecting tube
2, short tube 3 and mixing tube 4 are connected, one end of the air inlet short tube 1 is connected with outside ammonia mixing duct, the other end and described
Connecting tube 2 is connected, and connecting tube 2 is connected by connecting short tube 3 with the mixing tube 4, the end connection flue of mixing tube 4,
The angle steel 5 as scuff-resistant coating is provided with the lower section of mixing tube 4, some jet pipes 6 and diffusion steel plate are distributed with the top of mixing tube 4
7, the jet pipe 6 distinguishes oblique weld on mixing tube 4, and adjacent jet pipe 6 is arranged on mixing tube 4 with different incline directions
The left and right sides, the diffusion steel plate 7 is arranged on the top of jet pipe 6, and its top is provided with venthole.
As the preferred of the present embodiment, the jet pipe 6 is welded on the left and right two of mixing tube 4 with 30 ° of angle of inclination respectively
Side.The end of the mixing tube 4 is provided with installation steel plate 8, and mixing tube 4 is welded by installing steel plate 8 with walling of flue, while installs steel
Plate 8 also serves as the middle cut-off of mixing tube 4.The both sides of the mixing tube 4 are provided with supporting steel plate 9, and supporting steel plate 9 is used as and entirely set
Standby support is welded with flue.The lower section of the connecting tube 2 also is provided with angle steel 5.
The utility model at work, ammonia/air Mixture by being sequentially：1 → connecting tube of air inlet short tube 2 → connection
3 → mixing tube of short tube, 4 → jet pipe 6, ammonia gas mixture by with the gas pressure before upper pathway in 5000Pa or so, by with
To be 1000Pa or so after upper pathway.And the operation air pressure of flue gas can not form local eddy currents probably in 100OPa or so
In the case of, whole plus two kinds of gas mixture homogeneity.
The overall lower external of flue gas from whole spray ammonia barrier passes through, then the diffusion by spreading steel plate 7 mixes with ammonia
Gas mixes.During two kinds of gas mixings, other mixed corner cut degree due to there is more than 30 ° in contact surface, it can carry significantly
High contact surface, so as to improve the uniformity of mixing.
Each widgets of the present utility model are all that can be used as standard room, are installed in different size of flue.
The utility model is ± 5000Pa, temperature 320-450 installed in operating energy loss pressure as a plant equipment
DEG C flue in.Overall operation is the gas gas mixed process of a single gas phase two-fluid.
Below with the denitration running of 150t/h boilers come operation of the present utility model of illustrating：
Table 1 is the operational factor of flue gas.
The flue gas major parameter of table 1
The parameter of ammonia gas mixture is as follows：5% ammonia concentration, 95% air, mixture pressure 5000Pa.
The utility model is installed vertically in flue, is connected by air inlet short tube 1 with the ammonia mixing duct of outside, is passed through peace
Cartridge plate 8 and walling of flue weld, and make entirely to spray ammonia barrier and are fixed in flue.At the more flat place of flue during installation, size is outputed
For 1.2mx1.5m manhole, the repair and maintenance of spray ammonia barrier after being easy to.
The speed of service of flue gas is controlled in 12-15m/s, on the contact surface mixed with ammonia gas mixture, two kinds of gas phases
Mutually cutting.Ammonia gas mixture is sprayed from jet pipe 6 with 30 ° of angle, and flow control is spreading steel plate 7 in 20m/s or so, flue gas
In the presence of, produce eddy flow.The uniformity that two kinds of gases mix after being handled more than is high, and few local ammonias largely tire out
Long-pending situation occurs.
General principle, principal character and advantage of the present utility model has been shown and described above.The ordinary skill of this area
Personnel are not it should be appreciated that above-described embodiment limits the scope of protection of the utility model, all use equivalent substitutions etc. in any form
The technical scheme that mode is obtained, falls within the scope of protection of the utility model.
The utility model is not directed to partly same as the prior art or can realized using prior art.
Claims (5)
1. a kind of SCR system cigarette, ammonia gaseous mixture even distribution device, it is characterised in that：Including air inlet short tube (1), connecting tube (2), connect
Connect short tube (3) and mixing tube (4), one end of the air inlet short tube (1) is connected with the ammonia mixing duct of outside, the other end with it is described
Connecting tube (2) be connected, connecting tube (2) is connected by connecting short tube (3) with the mixing tube (4), the end of mixing tube (4)
Portion connects flue, and angle steel (5) as scuff-resistant coating is provided with the lower section of mixing tube (4), in mixing tube (4) if above be distributed with
Dry jet pipe (6) and diffusion steel plate (7), jet pipe (6) the difference oblique weld is on mixing tube (4), and adjacent jet pipe (6)
It is arranged on different incline directions at left and right sides of mixing tube (4), the diffusion steel plate (7) is arranged on the top of jet pipe (6), and
Its top is provided with venthole.
2. a kind of SCR system cigarette according to claim 1, ammonia gaseous mixture even distribution device, it is characterised in that：The jet pipe
(6) left and right sides of mixing tube (4) is welded on 30 ° of angle of inclination respectively.
3. a kind of SCR system cigarette according to claim 1, ammonia gaseous mixture even distribution device, it is characterised in that：The mixing tube
(4) end is provided with installation steel plate (8), and mixing tube (4) is welded by installing steel plate (8) with walling of flue.
4. a kind of SCR system cigarette according to claim 1, ammonia gaseous mixture even distribution device, it is characterised in that：The mixing tube
(4) both sides are provided with supporting steel plate (9), and supporting steel plate (9) welds as the support of whole equipment with flue.
5. a kind of SCR system cigarette according to claim 1, ammonia gaseous mixture even distribution device, it is characterised in that：The connecting tube
(2) angle steel (5) also is provided with below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123484.8U CN206621994U (en) | 2017-02-10 | 2017-02-10 | A kind of SCR system cigarette, ammonia gaseous mixture even distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123484.8U CN206621994U (en) | 2017-02-10 | 2017-02-10 | A kind of SCR system cigarette, ammonia gaseous mixture even distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206621994U true CN206621994U (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720123484.8U Active CN206621994U (en) | 2017-02-10 | 2017-02-10 | A kind of SCR system cigarette, ammonia gaseous mixture even distribution device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532057A (en) * | 2022-10-31 | 2022-12-30 | 连云港虹洋热电有限公司 | Purification and denitration device and method for flue gas of thermal power plant |
-
2017
- 2017-02-10 CN CN201720123484.8U patent/CN206621994U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532057A (en) * | 2022-10-31 | 2022-12-30 | 连云港虹洋热电有限公司 | Purification and denitration device and method for flue gas of thermal power plant |
| CN115532057B (en) * | 2022-10-31 | 2023-10-27 | 连云港虹洋热电有限公司 | Purifying and denitrating device and method for flue gas of thermal power plant |
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