CN208130837U - A kind of equipment for denitrifying flue gas - Google Patents
A kind of equipment for denitrifying flue gas Download PDFInfo
- Publication number
- CN208130837U CN208130837U CN201820442098.XU CN201820442098U CN208130837U CN 208130837 U CN208130837 U CN 208130837U CN 201820442098 U CN201820442098 U CN 201820442098U CN 208130837 U CN208130837 U CN 208130837U
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- flue gas
- grid
- ammonia
- shell
- mounting rack
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Abstract
The utility model discloses a kind of equipment for denitrifying flue gas, including shell, the catalyst mounting rack being set in the housing, it is connected to the flue gas input pipe of upper part of the housing, and is connected to the flue gas exit pipe of lower part of the housing；Flue gas input pipe is equipped with ammonia-spraying grid, and the mixer between ammonia-spraying grid and shell, ammonia-spraying grid are connected with ammonia tank by pipeline；Catalyst mounting rack includes the three-layer network screen work from top to bottom set gradually, wherein the grid beam for being located at top layer is reserved grid beam, the top of every layer of grid beam is equipped with soot blower；Housing bottom is connected with ash bucket, which is connected with ash releasing tube, which is equipped with switch valve；The flow straightening grid being located above catalyst mounting rack, and the deflector above flow straightening grid are equipped in shell.A kind of equipment for denitrifying flue gas of the utility model, it is structurally reasonable, reduce the fouling phenomenon in reactor, extends denitrating catalyst service life；Also, it ensure that the uniformity into gas in reactor.
Description
Technical field
The utility model relates to a kind of equipment for denitrifying flue gas.
Background technique
Nitrogen oxides can not only generate the environmental problems such as acid rain, photochemical fog, and unfavorable shadow can be also caused to human health
It rings.Therefore, the emission reduction Yu improvement of nitrogen oxides are a very urgent projects.Using NH3 as the selective catalysis of reducing agent also
Former technology（SCR）It is current industrial most effective stationary source NOx removal method.To guarantee denitration efficiency, needing will be in flue gas
Particulate matter and dust discharge, prevent catalyst to be blocked or cover, and avoid influencing catalyst activity；In addition, it is necessary to improve entrance
The uniformity of gas in reactor, so as to reactor efficient operation.
Utility model content
It is structurally reasonable the purpose of this utility model is to provide a kind of equipment for denitrifying flue gas, reduce in reactor
Fouling phenomenon extends denitrating catalyst service life；Also, it ensure that the uniformity into gas in reactor.
To achieve the above object, the technical solution of the utility model is to design a kind of equipment for denitrifying flue gas, including shell, set
In the intracorporal catalyst mounting rack of shell, be connected to the flue gas input pipe of upper part of the housing, and be connected to lower part of the housing flue gas it is defeated
Outlet pipe；The flue gas input pipe is equipped with ammonia-spraying grid, and the mixer between ammonia-spraying grid and shell, the spray ammonia
Grid is connected with ammonia tank by pipeline；The catalyst mounting rack includes the three-layer network screen work from top to bottom set gradually,
It is wherein reserved grid beam positioned at the grid beam of top layer, the top of every layer of grid beam is equipped with soot blower；The housing bottom
It is connected with ash bucket, which is connected with ash releasing tube, which is equipped with switch valve；It is equipped in the shell and is located at catalysis
Flow straightening grid above agent mounting rack, and the deflector above flow straightening grid.In the above scheme, when work, flue gas
The ammonia sprayed after into flue gas input pipe with ammonia-spraying grid mixes, and enters shell after mixing through mixer, is mixed into ammonia
Flue gas be delivered to flow straightening grid by the guide functions of deflector, flow straightening grid ensure that the uniformity of gas, then de-
It is reacted under denox catalyst, completes that shell is discharged by flue gas exit pipe after reacting.In addition, soot blower can will be deposited on denitration
Dust on catalyst is blown in ash bucket, when the dust in ash bucket reaches a certain amount of, is turned on the switch valve and is carried out ash discharge.Also,
By the way that reserved grid beam is arranged, when flue gas not up to default discharge standard, only denitration need to be also loaded on reserved grid beam and urged
Agent reduces downtime.By using above scheme, reduce the fouling phenomenon in reactor, extends denitrating catalyst
Service life；Also, it ensure that the uniformity into gas in reactor.
Preferably, the junction of the shell and flue gas exit pipe is equipped with flue gas monitoring device.By using above scheme, when
When flue gas monitoring device detects that the flue gas of reactor discharge not up to presets discharge standard, then it need to be also loaded on reserved grid beam
Denitrating catalyst.
Preferably, the upper side and lower side of the catalyst mounting rack is equipped with temperature sensor.By using above scheme,
Convenient for detecting the temperature change after being mixed into the flue gas of ammonia before the reaction, to guarantee reactor efficient operation.
Preferably, the upper side and lower side of the catalyst mounting rack is equipped with pressure sensor.By using above scheme,
Convenient for detecting the pressure change after being mixed into the flue gas of ammonia before the reaction, to guarantee reactor efficient operation.
Preferably, metal filter screen, along flow of flue gas direction, the metal filter screen position are equipped in the flue gas input pipe
In ammonia-spraying grid upstream.By using above scheme, the micropore of denitrating catalyst is deposited on after preventing particulate matter from entering reactor
In, cause denitrating catalyst blocking, inactivation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
The utility model specific implementation technical solution be：
As shown in Figure 1, a kind of equipment for denitrifying flue gas, catalyst mounting rack including shell 1, in shell 1 is connected to
The flue gas input pipe 2 on 1 top of shell, and it is connected to the flue gas exit pipe 3 of 1 lower part of shell；The flue gas input pipe 2 is equipped with
Ammonia-spraying grid 4, and the mixer 5 between ammonia-spraying grid 4 and shell 1, the ammonia-spraying grid 4 are connected with ammonia by pipeline
Gas storage tank 6；The catalyst mounting rack includes the three-layer network screen work 7 from top to bottom set gradually, wherein being located at the grid of top layer
Frame 7 is reserved grid beam 7, and the top of every layer of grid beam 7 is equipped with soot blower 8；1 bottom end of shell is connected with ash bucket 9, should
9 bottom end of ash bucket is connected with ash releasing tube 10, which is equipped with switch valve 11；It is equipped in the shell 1 and is located at catalyst peace
Shelve the flow straightening grid 12 of top, and the deflector 13 above flow straightening grid 12.
Also, the junction of above-mentioned shell 1 and flue gas exit pipe 3 is equipped with flue gas monitoring device 14.Under normal circumstances, to avoid
Resistance is larger when flue gas flows through denitrating catalyst, denitrating catalyst is not installed on reserved grid beam 7, but work as flue gas monitoring device 14
Detect that the flue gas of reactor discharge is not no when reaching default discharge standard, then need to be also loaded onto denitration on reserved grid beam 7 and urge
Agent.
The upper side and lower side of above-mentioned catalyst mounting rack is equipped with temperature sensor 15 and pressure sensor 16.By using
Above scheme, convenient for detecting the temperature and pressure variation after being mixed into the flue gas of ammonia before the reaction, to guarantee that reactor is efficiently transported
Row.
In addition, being equipped with metal filter screen 17, along flow of flue gas direction, the metal filter screen in above-mentioned flue gas input pipe 2
17 are located at 4 upstream of ammonia-spraying grid.By using above scheme, denitrating catalyst is deposited on after preventing particulate matter from entering reactor
In micropore, denitrating catalyst blocking, inactivation are caused.
When work, flue gas enters the ammonia sprayed after flue gas input pipe 2 with ammonia-spraying grid 4 and mixes, and mixes through mixer 5
Enter shell 1 after even, the flue gas for being mixed into ammonia is delivered to flow straightening grid 12, flow straightening grid 12 by the guide functions of deflector 13
It ensure that the uniformity of gas, then reacted under denitrating catalyst, pass through the discharge shell of flue gas exit pipe 3 after completing reaction
Body 1.In addition, the dust being deposited on denitrating catalyst can be blown in ash bucket 9 by soot blower 8, when the dust in ash bucket 9 reaches one
When quantitative, turn on the switch valve 11 and carry out ash discharge.Also, by the way that reserved grid beam 7 is arranged, when the not up to default discharge standard of flue gas
When, only it need to be also loaded onto denitrating catalyst on reserved grid beam 7, reduce downtime.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (5)
1. a kind of equipment for denitrifying flue gas, which is characterized in that including shell, the catalyst mounting rack being set in the housing, be connected to shell
The flue gas input pipe on body top, and it is connected to the flue gas exit pipe of lower part of the housing；The flue gas input pipe is equipped with spray ammonia lattice
Grid, and the mixer between ammonia-spraying grid and shell, the ammonia-spraying grid are connected with ammonia tank by pipeline；It is described
Catalyst mounting rack includes the three-layer network screen work from top to bottom set gradually, wherein the grid beam for being located at top layer is reserved grid
The top of frame, every layer of grid beam is equipped with soot blower；The housing bottom is connected with ash bucket, which is connected with ash discharge
Pipe, the ash releasing tube are equipped with switch valve；It is equipped with the flow straightening grid being located above catalyst mounting rack in the shell, and is located at
Deflector above flow straightening grid.
2. equipment for denitrifying flue gas according to claim 1, which is characterized in that the junction of the shell and flue gas exit pipe
Equipped with flue gas monitoring device.
3. equipment for denitrifying flue gas according to claim 2, which is characterized in that the upper side and lower side of the catalyst mounting rack
It is equipped with temperature sensor.
4. equipment for denitrifying flue gas according to claim 3, which is characterized in that the upper side and lower side of the catalyst mounting rack
It is equipped with pressure sensor.
5. equipment for denitrifying flue gas according to claim 4, which is characterized in that be equipped with metal filtration in the flue gas input pipe
Net, along flow of flue gas direction, the metal filter screen is located at ammonia-spraying grid upstream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442098.XU CN208130837U (en) | 2018-03-30 | 2018-03-30 | A kind of equipment for denitrifying flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442098.XU CN208130837U (en) | 2018-03-30 | 2018-03-30 | A kind of equipment for denitrifying flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208130837U true CN208130837U (en) | 2018-11-23 |
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ID=64291633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820442098.XU Active CN208130837U (en) | 2018-03-30 | 2018-03-30 | A kind of equipment for denitrifying flue gas |
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| Country | Link |
|---|---|
| CN (1) | CN208130837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668996A (en) * | 2018-12-29 | 2019-04-23 | 浙江大学 | A kind of denitrating catalyst full load runnability experimental rig |
-
2018
- 2018-03-30 CN CN201820442098.XU patent/CN208130837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668996A (en) * | 2018-12-29 | 2019-04-23 | 浙江大学 | A kind of denitrating catalyst full load runnability experimental rig |
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