CN207951083U - Equipment for denitrifying flue gas - Google Patents
Equipment for denitrifying flue gas Download PDFInfo
- Publication number
- CN207951083U CN207951083U CN201820156566.7U CN201820156566U CN207951083U CN 207951083 U CN207951083 U CN 207951083U CN 201820156566 U CN201820156566 U CN 201820156566U CN 207951083 U CN207951083 U CN 207951083U
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- CN
- China
- Prior art keywords
- ammonia
- grid
- flue gas
- catalyst bed
- denitrating tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model is related to a kind of equipment for denitrifying flue gas, belong to fume treatment technical field, including denitrating tower, three layers of catalyst bed are equipped in denitrating tower, the connection of denitrating tower top has bend pipe, bend pipe connection has flue, it is equipped with ammonia mixing arrangement in flue and ammonia sprays grid, it is a pipe that ammonia, which sprays grid, pipe is equipped with four row's nozzles, it it is 90 degree per the angle between adjacent two rows of nozzle spray directions, ammonia injection grid is connected to by pipeline with ammonia mixing arrangement, the arrival end of ammonia mixing arrangement is equipped with throttle valve and flowmeter, it is parallel in bend pipe to be equidistantly provided with multiple spoilers, it is equipped with flow straightening grid positioned at the top of denitrating tower internal catalyst bed, flow straightening grid is a mesh screen.The utility model can freely adjust the mixing ratio of ammonia and air as needed, and ammonia mixes more uniform with flue gas, also more disperses when across catalyst bed, denitration effect is more preferable, and catalyst life is longer.
Description
Technical field
The utility model is related to a kind of equipment for denitrifying flue gas, belong to fume treatment technical field.
Background technology
It needs to spray into the denitration tower reactor equipped with catalyst after mixing ammonia with air in SCR denitration technology, one
As the form of nozzle added using pipeline, that is, spray grid, so that ammonia is sufficiently mixed uniformly with flue gas, ammonia flows through together with flue gas
The catalyst bed of multilayer, by NOXIt is reduced to N2And H2O。
Existing SCR denitration technology has the following disadvantages：
1, existing ammonia-spraying grid injection direction is single, and efficiency is low, bad with flue gas mixed effect.
2, lack the device of control ammonia and air ratio.
3, ammonia and flue gas easy to produce the phenomenon for blocking up ash when entering the catalyst bed in denitrating tower, and can deposit
The phenomenon that being unevenly distributed, denitration effect is seriously affected.
Utility model content
The purpose of this utility model is to solve that deficiency exists in the prior art, and provides a kind of better flue gas of denitration effect
Denitrification apparatus.
The utility model is achieved through the following technical solutions：
I.e. a kind of equipment for denitrifying flue gas, including denitrating tower, denitrating tower is interior to be equipped with three layers of catalyst bed, the connection of denitrating tower top
There are bend pipe, bend pipe connection to have flue, ammonia mixing arrangement is equipped in flue and ammonia sprays grid, it is one that ammonia, which sprays grid,
Pipe, pipe are equipped with four row's nozzles, are 90 degree per the angle between adjacent two rows of nozzle spray directions, ammonia sprays grid
It is connected to ammonia mixing arrangement by pipeline, the arrival end of ammonia mixing arrangement is equipped with throttle valve and flowmeter, parallel in bend pipe
Multiple spoilers are equidistantly provided with, the top for being located at denitrating tower internal catalyst bed is equipped with flow straightening grid, and flow straightening grid is one
Mesh screen.
The utility model can freely adjust the mixing ratio of ammonia and air as needed, ammonia mixed with flue gas after by disturbing
Flowing plate and flow straightening grid pass through catalyst bed, and ammonia mixes more uniform with flue gas, also more disperses when across catalyst bed,
Denitration effect is more preferable, and catalyst life is longer.
Further preferably, the ammonia mixing arrangement is orderly connected with ammonia tank, destilling tower and ammonia water tank.For denitrating tower
Ammonia is provided, it is easy to use.
Further preferably, the thickness of the flow straightening grid is 20cm to 40cm, and mesh shape is circle, and Mesh Diameter is
8cm-12cm.Ensure that the mixture of ammonia and flue gas can be uniformly across catalyst bed after flow straightening grid.
Further preferably, soot blower is equipped in every layer of catalyst bed, soot blower is used for blowing down being deposited on catalyst
On dust and SCR byproducts of reaction, to reduce the pressure drop of reactor.
Compared with prior art, advantageous effect possessed by the utility model is：
1, the utility model can freely adjust the mixing ratio of ammonia and air as needed, ammonia mixed with flue gas after by
Spoiler and flow straightening grid pass through catalyst bed, and ammonia mixes more uniform, also more bonus point when across catalyst bed with flue gas
It dissipates, denitration effect is more preferable, and catalyst life is longer.
2, ammonia mixing arrangement is orderly connected with ammonia tank, destilling tower and ammonia water tank.Ammonia is provided for denitrating tower, is used
It is convenient.
3, the thickness of flow straightening grid is 20cm to 40cm, and mesh shape is circle, Mesh Diameter 8cm-12cm.Ensure ammonia
The mixture of gas and flue gas can be uniformly across catalyst bed after flow straightening grid.
4, soot blower is equipped in every layer of catalyst bed, soot blower is used for blowing down the dust and SCR of deposition on a catalyst
Byproduct of reaction, to reduce the pressure drop of reactor.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram that ammonia sprays grid；
Fig. 3 is the side structure schematic diagram that ammonia sprays grid.
In figure：1, ammonia water tank；2, destilling tower；3, ammonia tank；4, flue；5, ammonia mixing arrangement；6, throttle valve；7, flow
Meter；8, ammonia sprays grid；9, bend pipe；10, spoiler；11, denitrating tower；12, flow straightening grid；13, catalyst bed；14, soot blowing
Device；15, nozzle.
Specific implementation mode
Below against attached drawing, specific embodiment of the present utility model is described in further detail.
A kind of equipment for denitrifying flue gas as shown in Figure 1 to Figure 3, including denitrating tower 11, denitrating tower 11 is interior to be equipped with three layers of catalysis
Agent bed 13, soot blower 14 is equipped in every layer of catalyst bed 13, and the connection of 11 top of denitrating tower has bend pipe 9, the connection of bend pipe 9 to have flue
4, flue 4 is interior to be equipped with ammonia mixing arrangement 5 and ammonia injection grid 8, and it is a pipe that ammonia, which sprays grid 8, and pipe is equipped with
Four row's nozzles 15 are 90 degree per the angle between adjacent two rows of 15 injection directions of nozzle, ammonia spray grid 8 by pipeline with
Ammonia mixing arrangement 5 is connected to, and ammonia mixing arrangement 5 is orderly connected with ammonia tank 3, destilling tower 2 and ammonia water tank 1, ammonia mixing
The arrival end of device 5 is equipped with throttle valve 6 and flowmeter 7, parallel in bend pipe 9 to be equidistantly provided with multiple spoilers 10, is located at de-
The top of 11 internal catalyst bed 13 of nitre tower is equipped with flow straightening grid 12, and flow straightening grid 12 is a mesh screen, the thickness of flow straightening grid 12
For 20cm to 40cm, mesh shape is circle, Mesh Diameter 8cm-12cm.
The course of work：
Ammonium hydroxide in ammonia water tank 1 becomes ammonia by the distillation of destilling tower 2, is stored in ammonia tank 3, as needed
The flow of ammonia is adjusted, ammonia enters in ammonia mixing arrangement 5, and ammonia is mixed with air, the gaseous mixture of ammonia and air
Body enters in ammonia injection grid 8, and mixed gas is sprayed by nozzle 15 to be sufficiently mixed with the flue gas in flue 4, mixed gas
With flue gas after spoiler 10 and flow straightening grid 12, uniformly across three layers of catalyst bed 13, the flue gas after reduction is by taking off
11 lower end of nitre tower escapes and enter next process.
In the description of the present invention, term "inner", "outside", "upper", "lower", etc. the orientation or positional relationships of instructions be
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the utility model rather than requires the utility model must
Must be with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
Claims (4)
1. a kind of equipment for denitrifying flue gas, including denitrating tower (11), denitrating tower (11) is interior to be equipped with three layers of catalyst bed (13), feature
It is：Denitrating tower (11) the top connection has bend pipe (9), bend pipe (9) connection to have flue (4), mixed equipped with ammonia in flue (4)
It attaching together and sets (5) and ammonia injection grid (8), it is a pipe that ammonia, which sprays grid (8), and pipe is equipped with four row's nozzles (15),
It it is 90 degree per the angle between adjacent two rows of nozzle (15) injection directions, it is mixed by pipeline and ammonia that ammonia sprays grid (8)
It attaches together and sets (5) connection, the arrival end of ammonia mixing arrangement (5) is equipped with throttle valve (6) and flowmeter (7), parallel etc. in bend pipe (9)
Multiple spoilers (10) are arranged at intervals with, the top for being located at denitrating tower (11) internal catalyst bed (13) is equipped with flow straightening grid (12),
Flow straightening grid (12) is a mesh screen.
2. equipment for denitrifying flue gas according to claim 1, it is characterised in that：The ammonia mixing arrangement (5) couples successively
There are ammonia tank (3), destilling tower (2) and ammonia water tank (1).
3. equipment for denitrifying flue gas according to claim 1, it is characterised in that：The thickness of the flow straightening grid (12) is 20cm
To 40cm, mesh shape is circle, Mesh Diameter 8cm-12cm.
4. equipment for denitrifying flue gas according to claim 1, it is characterised in that：It is equipped in every layer of catalyst bed (13)
Soot blower (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820156566.7U CN207951083U (en) | 2018-01-30 | 2018-01-30 | Equipment for denitrifying flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820156566.7U CN207951083U (en) | 2018-01-30 | 2018-01-30 | Equipment for denitrifying flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207951083U true CN207951083U (en) | 2018-10-12 |
Family
ID=63735966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820156566.7U Expired - Fee Related CN207951083U (en) | 2018-01-30 | 2018-01-30 | Equipment for denitrifying flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207951083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772124A (en) * | 2019-03-27 | 2019-05-21 | 广东佳德环保科技有限公司 | A kind of flue gas desulfurization and denitrification takes off white equipment |
| CN112495182A (en) * | 2020-11-11 | 2021-03-16 | 杭州国泰环保科技股份有限公司 | Sludge incineration flue gas denitration system |
-
2018
- 2018-01-30 CN CN201820156566.7U patent/CN207951083U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772124A (en) * | 2019-03-27 | 2019-05-21 | 广东佳德环保科技有限公司 | A kind of flue gas desulfurization and denitrification takes off white equipment |
| CN112495182A (en) * | 2020-11-11 | 2021-03-16 | 杭州国泰环保科技股份有限公司 | Sludge incineration flue gas denitration system |
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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: 20181012 Termination date: 20210130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |