CN208320474U - A kind of burning power plant flue gas SCR denitration flue device - Google Patents
A kind of burning power plant flue gas SCR denitration flue device Download PDFInfo
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- CN208320474U CN208320474U CN201820664348.4U CN201820664348U CN208320474U CN 208320474 U CN208320474 U CN 208320474U CN 201820664348 U CN201820664348 U CN 201820664348U CN 208320474 U CN208320474 U CN 208320474U
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- flue
- denitration
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- denitration flue
- gas
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Abstract
The utility model is a kind of burning power plant flue gas SCR denitration flue device, including denitration flue, it is characterized in that, the denitration flue is arranged in hollow cylindrical structure, the lower surface of the honeycomb screen grid layer is equipped with gas distribution grid, and the liquid reserve tank is fixedly mounted on the lateral wall of the denitration flue.The utility model structure is simple, and design is rationally, reliable for operation, is the gas distribution grid of up-narrow and down-wide trapezoidal inlet channel, the honeycomb screen grid layer with diamond structure duct, so that NOx and reducing agent NH in flue gas by setting section3It is come into full contact with, improve removal efficiency, efficiently solve the problems, such as that removal efficiency is undesirable, by the way that the equally smoke deflector two of folding shape plate and the equally smoke deflector one of folding shape plate is arranged, the flue dust reduced in flue gas is bonded in flue inner wall, and then has maintained free air space of the flue gas in flue.
Description
Technical field
The utility model relates to flue gas SCR denitration equipment technical field more particularly to a kind of burning power plant flue gas SCRs
Denitration flue device.
Background technique
SCR selective catalytic reduction denitration is under the effect of the catalyst, into about 280~420 DEG C of temperature of flue gases
It is passed through reducing agent NH3, reducing agent NH3NOx in flue gas is reduced to N2Technique.Its reaction process is commonly considered as a molecule
NH3It is reacted with a molecule NO, a molecule N can be generated2, while catalyst is reduced, O2Presence can make catalyst again by
Oxidation, to complete entire catalytic cycle process.SCR selective catalytic reduction denitration technology is not because it has by-product, not shape
It is the gas denitrifying technology being most widely used in the world at present, in countries and regions such as Japan, Europe, the U.S. at secondary pollution
Most of power plant in substantially all apply this technology, wherein flue device is indispensable in power-plant flue gas SCR denitration sets
It is standby, however, most of flue device used at this stage there are the NOx in flue gas can not be with reducing agent NH3It comes into full contact with, in turn
Removal efficiency is reduced, and flue gas maintains higher cigarette speed, can not deposit the dust in flue gas, the flue dust meeting contained in flue gas
It is bonded in flue inner wall, reduces the flue gas free air space in flue.
Summary of the invention
The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of burning power plant flue gas SCR denitration use
Flue device.
In order to achieve the above object, the utility model adopts the following technical solutions:
A kind of burning power plant flue gas SCR denitration flue device, including denitration flue, which is characterized in that described de-
Smoke of gunpowder road is arranged in hollow cylindrical structure, is equipped with interlayer between the inner wall and outer wall of the denitration flue, in the interlayer
Filled with thermal insulation cotton, the lower sidewall of the denitration flue is equipped with horizontal flue entrance pipe, the flue entrance pipe
Outlet side sequentially passes through the outer wall of the denitration flue, the interlayer, the inner wall of the denitration flue and the denitration flue
Inside connection, the bottom outside of the denitration flue are connected with dismountable flue-dust retainer, and the flue-dust retainer is located at the flue entrance
The lower section of pipe, the tip exterior of the denitration flue are fixed with petticoat pipe, the top of the bottom of the petticoat pipe and the denitration flue
End is tightly connected, and the top of the petticoat pipe is fixed with vertical flue outlet pipe, is equipped in the pipeline of the flue outlet pipe
Air-introduced machine, the bottom in the denitration flue are equipped with horizontal smoke deflector one, and the top in the denitration flue is equipped with water
Flat smoke deflector two, the smoke deflector one and the smoke deflector two are fixedly mounted on the denitration flue
On inner wall, the smoke deflector one and the smoke deflector two are several equidistant folding shape plates, the flue gas water conservancy diversion
The lower surface of plate two is equipped with gas distributor two, and the gas distributor two is mounted on the inner wall of the denitration flue, described
The top of smoke deflector one is equipped with horizontal catalyst layer, is equipped with maintenance door, the maintenance on the outer wall of the denitration flue
Door is located on the outside of one end of the catalyst layer, and the catalyst layer is the strainer for being coated with catalyst, the catalyst layer
Lower surface is equipped with gas distributor one, and the gas distributor one is mounted on the inner wall of the denitration flue, the catalyst
The top of layer is equipped with honeycomb screen grid layer, and the honeycomb screen grid layer is fixedly mounted on the inner wall of the denitration flue, the rectification
Grid layer is equipped with the duct of diamond structure, and the lower surface of the honeycomb screen grid layer is equipped with gas distribution grid, the gas distribution
It is up-narrow and down-wide trapezoidal inlet channel that plate, which is equipped with section, and the top of the honeycomb screen grid layer is equipped with horizontal feed liquor branch pipe
Road, the feed liquor branch pipe(tube) are located at the lower section of the gas distributor two, and the lower surface of the feed liquor branch pipe(tube) is equipped with several ammonia
The liquid feeding end of injector head, the feed liquor branch pipe(tube) sequentially passes through the inner wall of the denitration flue, the interlayer, the denitration flue
Outer wall be connected with feed liquor main pipeline, the feed liquor main pipeline is located at the outside of the denitration flue, the pipe of the feed liquor main pipeline
Flowmeter is equipped on road, the bottom of the feed liquor main pipeline is connected with suction pump, and the outside of the suction pump is equipped with liquid reserve tank, described
Suction pump is located at the bottom of the liquid reserve tank, and the liquid reserve tank is fixedly mounted on the lateral wall of the denitration flue.
A nanometer titanium polymer erosion resistant coating is coated on the pipeline outer wall of the flue entrance pipe and the flue outlet pipe.
The flue-dust retainer frustum cone structure setting with a narrow upper and lower width.
The maintenance door is equipped with transparency window.
The beneficial effects of the utility model are: the utility model structure is simple, design is rationally, reliable for operation, passes through setting
Section is the gas distribution grid of up-narrow and down-wide trapezoidal inlet channel, the honeycomb screen grid layer with diamond structure duct, to reduction
Agent NH3It is uniformly distributed, by being provided with the strainer catalyst layer for being coated with catalyst of gas distributor one, so that cigarette
NOx and reducing agent NH in gas3It is come into full contact with, improves removal efficiency, efficiently solve that removal efficiency is undesirable to ask
Topic, by the way that the equally smoke deflector two of folding shape plate and the equally smoke deflector one of folding shape plate is arranged, in flue gas
When maintaining higher cigarette speed, shape plate is rolled at equal intervals and increases the length of exhaust gases passes, and then sufficiently deposits the dust in flue gas,
The flue dust reduced in flue gas is bonded in flue inner wall, and then has maintained free air space of the flue gas in flue.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure: 1- denitration flue；2- flue entrance pipe；3- flue-dust retainer；4- flue outlet pipe；5- air-introduced machine；6- liquid reserve tank；
7- suction pump；8- feed liquor main pipeline；9- flowmeter；10- gas distribution grid；11- honeycomb screen grid layer；12- gas distributor one；
13- catalyst layer；14- smoke deflector two；15- gas distributor two；16- maintenance door；17- feed liquor branch pipe(tube)；The injection of 18- ammonia
Head；19- smoke deflector one；
It is described in detail below with reference to the embodiments of the present invention referring to attached drawing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Figure 1, a kind of burning power plant flue gas SCR denitration flue device, including denitration flue 1, feature
It is, the denitration flue 1 is arranged in hollow cylindrical structure, and folder is equipped between the inner wall and outer wall of the denitration flue 1
Layer, the interlayer is interior to be filled with thermal insulation cotton, and the lower sidewall of the denitration flue 1 is equipped with horizontal flue entrance pipe 2, institute
The outlet side for stating flue entrance pipe 2 sequentially passes through the inner wall of the outer wall of the denitration flue 1, the interlayer, the denitration flue 1
It is connected to the inside of the denitration flue 1, the bottom outside of the denitration flue 1 is connected with dismountable flue-dust retainer 3, the collection ash
Bucket 3 is located at the lower section of the flue entrance pipe 2, and the tip exterior of the denitration flue 1 is fixed with petticoat pipe, the bottom of the petticoat pipe
Portion is connect with the end sealing of the denitration flue 1, and the top of the petticoat pipe is fixed with vertical flue outlet pipe 4, described
Air-introduced machine 5 is equipped in the pipeline of flue outlet pipe 4, the bottom in the denitration flue 1 is equipped with horizontal smoke deflector 1,
Top in the denitration flue 1 is equipped with horizontal smoke deflector 2 14, and the smoke deflector 1 and the flue gas are led
Flowing plate 2 14 is fixedly mounted on the inner wall of the denitration flue 1, the smoke deflector 1 and the smoke deflector
2 14 be several equidistant folding shape plates, and the lower surface of the smoke deflector 2 14 is equipped with gas distributor 2 15, described
Gas distributor 2 15 is mounted on the inner wall of the denitration flue 1, and the top of the smoke deflector 1 is equipped with horizontal
Catalyst layer 13, maintenance door 16 is equipped on the outer wall of the denitration flue 1, and the maintenance door 16 is located at the catalyst layer 13
On the outside of one end, the catalyst layer 13 is the strainer for being coated with catalyst, and the lower surface of the catalyst layer 13 is equipped with gas point
Cloth device 1, the gas distributor 1 are mounted on the inner wall of the denitration flue 1, the top peace of the catalyst layer 13
There is honeycomb screen grid layer 11, the honeycomb screen grid layer 11 is fixedly mounted on the inner wall of the denitration flue 1, the honeycomb screen grid layer
11 are equipped with the duct of diamond structure, and the lower surface of the honeycomb screen grid layer 11 is equipped with gas distribution grid 10, the gas distribution
It is up-narrow and down-wide trapezoidal inlet channel that plate 10, which is equipped with section, and the top of the honeycomb screen grid layer 11 is equipped with horizontal feed liquor branch
Pipeline 17, the feed liquor branch pipe(tube) 17 are located at the lower section of the gas distributor 2 15, the lower surface of the feed liquor branch pipe(tube) 17
Equipped with several ammonia injector heads 18, the liquid feeding end of the feed liquor branch pipe(tube) 17 sequentially passes through the inner wall of the denitration flue 1, the folder
Layer, the denitration flue 1 outer wall be connected with feed liquor main pipeline 8, the feed liquor main pipeline 8 is located at the outside of the denitration flue 1,
Flowmeter 9 is equipped on the pipeline of the feed liquor main pipeline 8, the bottom of the feed liquor main pipeline 8 is connected with suction pump 7, described to draw water
The outside of pump 7 is equipped with liquid reserve tank 6, and the suction pump 7 is located at the bottom of the liquid reserve tank 6, and the liquid reserve tank 6 is fixedly mounted on institute
On the lateral wall for stating denitration flue 1.
A nanometer titanium polymer erosion resistant coating is coated on the pipeline outer wall of the flue entrance pipe 2 and the flue outlet pipe 4.
The setting of the flue-dust retainer 3 frustum cone structure with a narrow upper and lower width.
The maintenance door 16 is equipped with transparency window.
When the utility model is used, start suction pump 7 and air-introduced machine 5 first, suction pump 7 by the ammonium hydroxide in liquid reserve tank 6 by
Feed liquor main pipeline 8 by feed liquor branch pipe(tube) 17 and by ammonia injector head 18 spray into denitration flue 1 in, then by the flue gas of denitration by
Flue entrance pipe 2 enters in denitration flue 1, and the ammonium hydroxide of sprinkling passes through the honeycomb screen grid layer 11 with diamond structure duct, setting
Section is the gas distribution grid 10 of up-narrow and down-wide trapezoidal inlet channel, to reducing agent NH3It is uniformly distributed, and passes through flue gas
The flue gas to denitration of deflector 1 is on the strainer catalyst layer 13 for being coated with catalyst with gas distributor 1
It comes into full contact with, improves removal efficiency, efficiently solve the problems, such as that removal efficiency is undesirable, the lime-ash of generation enters flue-dust retainer 3
It is collected, denitration obtains flue gas by gas distributor 2 15 into the equally smoke deflector 2 14 of folding shape plate and through cigarette
Road outlet 4 is discharged, and the smoke deflector 2 14 that shape plate is equally rolled over by setting and the flue gas for equally rolling over shape plate are led
Flowing plate 1 rolls over the length that shape plate increases exhaust gases passes, and then sufficiently heavy when flue gas maintains higher cigarette speed at equal intervals
Dust in product flue gas, the flue dust reduced in flue gas is bonded in flue inner wall, and then has maintained flue gas in flue
Free air space, the utility model structure is simple, and design is rationally, reliable for operation.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
Improvement directly applies to other occasions, both is within the protection scope of the present invention.
Claims (4)
1. a kind of burning power plant flue gas SCR denitration flue device, including denitration flue (1), which is characterized in that described de-
Smoke of gunpowder road (1) is arranged in hollow cylindrical structure, and interlayer is equipped between the inner wall and outer wall of the denitration flue (1), described
Thermal insulation cotton is filled in interlayer, the lower sidewall of the denitration flue (1) is equipped with horizontal flue entrance pipe (2), described
The outlet side of flue entrance pipe (2) sequentially passes through the outer wall of the denitration flue (1), the interlayer, the denitration flue (1)
Inner wall is connected to the inside of the denitration flue (1), and the bottom outside of the denitration flue (1) is connected with dismountable flue-dust retainer
(3), the flue-dust retainer (3) is located at the lower section of the flue entrance pipe (2), and the tip exterior of the denitration flue (1) is fixed to be connected
There is petticoat pipe, the bottom of the petticoat pipe is connect with the end sealing of the denitration flue (1), and the top of the petticoat pipe is fixed with perpendicular
Straight flue outlet pipe (4), the pipeline of the flue outlet pipe (4) is interior to be equipped with air-introduced machine (5), in the denitration flue (1)
Bottom is equipped with horizontal smoke deflector one (19), and the top in the denitration flue (1) is equipped with horizontal smoke deflector two
(14), the smoke deflector one (19) and the smoke deflector two (14) are fixedly mounted on the denitration flue (1)
On inner wall, the smoke deflector one (19) and the smoke deflector two (14) are several equidistant folding shape plates, described
The lower surface of smoke deflector two (14) is equipped with gas distributor two (15), and the gas distributor two (15) is mounted on described de-
On the inner wall in smoke of gunpowder road (1), the top of the smoke deflector one (19) is equipped with horizontal catalyst layer (13), the denitration cigarette
Maintenance door (16) are equipped on the outer wall in road (1), the maintenance door (16) is located on the outside of one end of the catalyst layer (13), described
Catalyst layer (13) is the strainer for being coated with catalyst, and the lower surface of the catalyst layer (13) is equipped with gas distributor one
(12), the gas distributor one (12) is mounted on the inner wall of the denitration flue (1), the top of the catalyst layer (13)
Equipped with honeycomb screen grid layer (11), the honeycomb screen grid layer (11) is fixedly mounted on the inner wall of the denitration flue (1), described whole
The duct that grid layer (11) are equipped with diamond structure is flowed, the lower surface of the honeycomb screen grid layer (11) is equipped with gas distribution grid
(10), it is up-narrow and down-wide trapezoidal inlet channel, the honeycomb screen grid layer (11) that the gas distribution grid (10), which is equipped with section,
Top be equipped with horizontal feed liquor branch pipe(tube) (17), the feed liquor branch pipe(tube) (17) is located under the gas distributor two (15)
The lower surface of side, the feed liquor branch pipe(tube) (17) is equipped with several ammonia injector heads (18), the liquid feeding end of the feed liquor branch pipe(tube) (17)
Sequentially pass through the inner wall of the denitration flue (1), the interlayer, the denitration flue (1) outer wall be connected with feed liquor main pipeline
(8), the feed liquor main pipeline (8) is located at the outside of the denitration flue (1), is equipped on the pipeline of the feed liquor main pipeline (8)
The bottom of flowmeter (9), the feed liquor main pipeline (8) is connected with suction pump (7), and the outside of the suction pump (7) is equipped with liquid reserve tank
(6), the suction pump (7) is located at the bottom of the liquid reserve tank (6), and the liquid reserve tank (6) is fixedly mounted on the denitration flue
(1) on lateral wall.
2. a kind of burning power plant flue gas SCR denitration flue device according to claim 1, which is characterized in that institute
It states and is coated with a nanometer titanium polymer erosion resistant coating on the pipeline outer wall of flue entrance pipe (2) and the flue outlet pipe (4).
3. a kind of burning power plant flue gas SCR denitration flue device according to claim 1, which is characterized in that institute
State flue-dust retainer (3) frustum cone structure setting with a narrow upper and lower width.
4. a kind of burning power plant flue gas SCR denitration flue device according to claim 1, which is characterized in that institute
Maintenance door (16) are stated equipped with transparency window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820664348.4U CN208320474U (en) | 2018-05-07 | 2018-05-07 | A kind of burning power plant flue gas SCR denitration flue device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820664348.4U CN208320474U (en) | 2018-05-07 | 2018-05-07 | A kind of burning power plant flue gas SCR denitration flue device |
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| CN208320474U true CN208320474U (en) | 2019-01-04 |
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| CN201820664348.4U Active CN208320474U (en) | 2018-05-07 | 2018-05-07 | A kind of burning power plant flue gas SCR denitration flue device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439367A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Air distribution plate |
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2018
- 2018-05-07 CN CN201820664348.4U patent/CN208320474U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439367A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Air distribution plate |
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