CN208583181U - A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously - Google Patents
A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously Download PDFInfo
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- CN208583181U CN208583181U CN201820719990.8U CN201820719990U CN208583181U CN 208583181 U CN208583181 U CN 208583181U CN 201820719990 U CN201820719990 U CN 201820719990U CN 208583181 U CN208583181 U CN 208583181U
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Abstract
The utility model relates to a kind of adjust automaticallies to strengthen mixing and anti-blocking ammonia-spraying grid device simultaneously, belong to coal-burning boiler environment protection field.Existing ammonia-spraying grid ammonia and flue gas mixed effect are poor, adjustment larger workload, are easy obstruction.Flue gas flow rate tracking device is connect with No.1 lever in the utility model, and No.1 lever is connect with spray ammonia branch pipe；No. two levers are connect with No.1 lever, and No. two levers are also connect with connecting rod；Connecting rod is located at the inside of nozzle, and it sequentially passes through nozzle degree adjustment valve and elastomeric element and is connect with support ring, nozzle degree adjustment valve is located on nozzle, elastomeric element is located in nozzle, adjacent with the nozzle degree adjustment valve and inner wall with nozzle in one end of elastomeric element is fixed, and the other end and the support ring of elastomeric element are fixed；Guide ring is arranged on the outer wall of nozzle, and No. two levers run through guide ring；Nozzle is connected to spray ammonia branch pipe.The utility model realizes the aperture that each nozzle is adjusted automatically according to flue gas flow rate using simple and mechanical principle.
Description
Technical field
The utility model relates to a kind of adjust automaticallies to strengthen mixing and anti-blocking ammonia-spraying grid device simultaneously, belong to coal-fired pot
Furnace environment protection field.
Background technique
Coal generates a large amount of harmful substances in combustion, the NOx pollution problem that thermal power industry fire coal generates by
To the extensive concern of various circles of society.To realize that coal unit minimum discharge is transformed comprehensively, to the stable and high effective operation of denitrification apparatus
Propose stern challenge.The operating condition of ammonia-spraying grid be directly related to the NOx removal efficiency of denitrating system, the escaping of ammonia rate,
Catalyst life and air preheater blocking etc..
There are some shortcoming and defect for traditional ammonia-spraying grid: traditional ammonia-spraying grid uses linear arrangement or subregion cloth
Set, be in the amount of injection of the same line or the same restore-zone it is identical, such as application No. is in 201710070946.9
State's patent, but flue flow field is unevenly distributed, and each spray site flue gas flow is all different even real-time change, faces this feelings
Condition, no matter ammonia-spraying grid linear arrangement or subregion arrangement ammonia and flue gas mixed effect it is poor.Traditional ammonia-spraying grid adjustment
Larger workload, ammonia-spraying grid be usually no longer change with the variation of load and flue flow field situation after adjusting, but
Flue flow field situation is complicated, variation all almost is occurring every second, therefore traditional ammonia-spraying grid becomes flue gas condition
The adaptability of change is poor, this causes running efficiency of system low.In addition, part nozzle opening is upward in ammonia-spraying grid, it is easy by cigarette
Collapse ash or underload fallout obstruction in road.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and it is reasonable to provide a kind of design
Adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, by arranging the cigarette with the effect of flue gas flow-disturbing at nozzle
Gas velocity tracking device, by flue gas flow rate feeds back to nozzle degree adjustment valve using lever principle to adjust its opening size, from
And the intensity of nozzle sprays gas is adjusted, realize the purpose that each nozzle aperture is adjusted automatically according to flue gas flow rate.
The technical scheme in the invention for solving the above technical problem is: a kind of adjust automatically while strengthening mixing and anti-
Stifled ammonia-spraying grid device, which is characterized in that including flue gas flow rate tracking device, No.1 lever, No. two levers, connecting component,
Nozzle degree adjustment valve, elastomeric element, connecting rod, support ring, nozzle, spray ammonia branch pipe, No.1 shaft, No. two shafts and guiding
Ring；The flue gas flow rate tracking device is connect with one end of No.1 lever, and the other end of the No.1 lever passes through No.1 shaft
It is connect with spray ammonia branch pipe；One end of No. two levers is connect by No. two shafts with No.1 lever, No. two levers it is another
One end is connect by connecting component with connecting rod；The connecting rod is located at the inside of nozzle, and the connecting rod sequentially passes through nozzle
Degree adjustment valve and elastomeric element are simultaneously connect with support ring, and the nozzle degree adjustment valve is located on nozzle, the elastomeric element
In nozzle, adjacent with the nozzle degree adjustment valve and inner wall with nozzle in one end of the elastomeric element is fixed, the elasticity
The other end of component is fixed with support ring；The guide ring is arranged on the outer wall of nozzle, and No. two levers run through guide ring；
The nozzle is connected to spray ammonia branch pipe.Flue gas flow rate tracking device is used to carry out flow-disturbing to flue gas, so that flue gas is generated vortex, simultaneously
No.1 lever is driven to be moved, under the drive of No.1 lever, No. two levers are also moved, to pull nozzle aperture tune
Gap is generated between section valve and nozzle, projects gas in nozzle.
Furthermore, the nozzle is provided with several, several nozzles are arranged successively on spray ammonia branch pipe.In nozzle
The gas flow of ejection is suitable for the flue gas flow of different location.
Furthermore, the nozzle is arranged vertically with spray ammonia branch pipe.
Furthermore, the flue gas flow rate tracking device and No.1 lever are rigidly connected.It can be more sensitively to flue gas
The flow velocity of flue gas is responded at flow velocity tracking device, convenient for making nozzle degree adjustment valve have suitable aperture.
Furthermore, the nozzle degree adjustment valve is inverted cone-shaped structure, and the nozzle degree adjustment valve is located at nozzle
End, the nozzle degree adjustment valve and nozzle cooperate.When flue gas flow rate is 0m/s, nozzle degree adjustment valve is completely closed.
Furthermore, the support ring is hollow plate structure, is circulated for gas.It is logical from centre convenient for gas
It crosses.
A kind of adjust automatically as described above strengthens the spray ammonia method of mixing and anti-blocking ammonia-spraying grid device simultaneously, special
Sign is that the spray ammonia method is as follows: flue gas in flow process with flue gas flow rate tracking device bump against, and flue gas flow rate with
Vortex is formed at track device；Flue gas flow rate tracking device and No.1 lever rotate under the promotion of flue gas around No.1 shaft, thus
No. two levers are driven to rotate around No. two shafts, meanwhile, No. two levers are moved with guide ring；Under the action of No. two levers,
It is mobile that connecting rod is pulled by connecting component, to drive nozzle degree adjustment valve mobile, opens nozzle degree adjustment valve, spray
Ammonia air Mixture in ammonia branch pipe sprays and violent with flue gas under the turbulent flow of flue gas at the flue gas flow rate tracking device
Mixing.The flow that nozzle sprays gas can be voluntarily adjusted according to the flow velocity of flue gas, adapt to the change that flue gas flow occurs in flue
Change, it is adaptable, improve the operational efficiency of system.
Furthermore, the flue gas flow rate tracking device and No.1 lever are according to the different around No.1 shaft of flue gas flow rate
Rotate different angles.To control the aperture of nozzle degree adjustment valve, flue gas flow variation is adapted it to.
Furthermore, each flue gas flow rate tracking device is adjusted accordingly according to the flue gas flow rate of its position
The opening size of nozzle degree adjustment valve, the flue gas flow rate range of response is 0-20m/s, to realize automatically according to flue gas stream
The purpose of each nozzle aperture of velocity modulation section.
Furthermore, when flue gas flow rate is zero, tight fit between nozzle degree adjustment valve and the inner wall of nozzle；With
The aperture of the increase nozzle degree adjustment valve of flue gas flow rate increases.
The utility model compared with prior art, has the following advantages that and effect:
1, flue gas flow rate tracking device can adjust in time the aperture of nozzle degree adjustment valve according to flue gas flow before nozzle,
So as to avoid the NH that the small region ammonia density of flue gas flow caused by traditional ammonia-spraying grid equalization spray ammonia is excessively high and generates4HSO4
Before phenomenon and the escaping of ammonia phenomenon and nozzle the big region ammonia density of flue gas flow it is too low caused by NOx do not removed sufficiently into
And discharge beyond standards phenomenon.
2, flue gas flow rate tracking device, which has both, makes to flow through the effect that its flue gas generates vortex, strengthens cigarette under the action of vortex
The ammonia that gas is sprayed with nozzle mixes, and sufficiently reacts conducive to subsequent catalyst section ammonia with NOx.
3, nozzle degree adjustment valve is closed when flue gas flow rate is 0 m/s or is shut down, and can effectively avoid flue dust
It settles and nozzle blockage caused by the ash that collapses is equal, to avoid under the serious unevenness of the spray ammonia caused by nozzle blockage, denitration efficiency
It drops, the escaping of ammonia is exceeded, the asymmetric consumption of catalyst life, NH4HSO4A series of problems, such as deposition and equipment resistance increase.
4, flue gas flow rate tracking device chooses wear-resistant material, and other equipment and part are common iron；Certainly using machinery
The dynamic failure rate that passes to is small, stable, operates without special messenger, and Inspection and maintenance during need to only shutting down has complete production domesticization
Condition, equipment and operation expense are low.
Detailed description of the invention
Fig. 1 be in the present embodiment adjust automatically and meanwhile strengthen mixing and anti-blocking ammonia-spraying grid device front view structure signal
Figure.
Fig. 2 be in the present embodiment adjust automatically and meanwhile strengthen mixing and anti-blocking ammonia-spraying grid device sectional structure signal
Figure.
In figure: flue gas flow rate tracking device 1,2, No. two levers 3 of No.1 lever, connecting component 4, nozzle degree adjustment valve 5,
Elastomeric element 6, connecting rod 7, support ring 8, nozzle 9, spray ammonia branch pipe 10, No.1 shaft 11, No. two shafts 12, guide rings 13.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1 to Fig. 2, a kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device, including flue gas stream simultaneously
Fast tracking device 1,2, No. two levers 3 of No.1 lever, connecting component 4, nozzle degree adjustment valve 5, elastomeric element 6, connecting rod 7,
Support ring 8, nozzle 9, spray ammonia branch pipe 10,11, No. two shafts 12 of No.1 shaft and guide ring 13.
One end of flue gas flow rate tracking device 1 and No.1 lever 2 is rigidly connected, the nonelastic deformation in 500 DEG C.No.1 thick stick
The other end of bar 2 is connect by No.1 shaft 11 with spray ammonia branch pipe 10, and No.1 lever 2 can be rotated around No.1 shaft 11；No. two thick sticks
One end of bar 3 is connect by No. two shafts 12 with No.1 lever 2, and the other end of No. two levers 3 passes through connecting component 4 and connecting rod
7 connections；Connecting rod 7 is located at the inside of nozzle 9, connecting rod 7 sequentially pass through nozzle degree adjustment valve 5 and elastomeric element 6 and with branch
Pushing out ring 8 connects, and nozzle degree adjustment valve 5 is located on nozzle 9, and elastomeric element 6 is located in nozzle 9, one end of elastomeric element 6 and spray
Mouth degree adjustment valve 5 is adjacent and fixes with the inner wall of nozzle 9, and the other end and support ring 8 of elastomeric element 6 are fixed；Support ring 8 is
Hollow plate structure circulates for gas, and ammonia air Mixture is through-flow in guarantee nozzle 9.The setting of guide ring 13 is being sprayed
On the outer wall of mouth 9, No. two levers 3 run through round guide ring 13, and can slide in guide ring 13.Nozzle 9 and spray ammonia branch pipe 10
Connection, nozzle 9 are provided with several, several nozzles 9 are arranged successively on spray ammonia branch pipe 10；Nozzle 9 and spray ammonia branch pipe 10 hang down
Straight arrangement.Nozzle degree adjustment valve 5 is inverted cone-shaped structure, and in the state that nozzle 9 is opened, flue gas is along nozzle aperture regulation 5
Hole with 9 tube wall of nozzle can reinforce ammonia and mix with flue gas in cone injection outward.Nozzle degree adjustment valve 5
In the end of nozzle 9, nozzle degree adjustment valve 5 and nozzle 9 cooperate.
A kind of adjust automatically as described above strengthens the spray ammonia method of mixing and anti-blocking ammonia-spraying grid device simultaneously, sprays ammonia
Method is as follows: ammonia-spraying grid device and relevant device setting are located at flue before denitrating catalyst in SCR denitration system inlet
Interior, flue gas passes through ammonia-spraying grid device and related deflector, enters Benitration reactor after flow straightening grid.Flue gas is in flow process
Bump against with flue gas flow rate tracking device 1, under the flow-disturbing effect of flue gas flow rate tracking device 1, at flue gas flow rate tracking device 1
Form vortex；Flue gas flow rate tracking device 1 and No.1 lever 2 rotate under the promotion of flue gas around No.1 shaft 11, to drive
No. two levers 3 are rotated around No. two shafts 12, meanwhile, No. two levers 3 are moved with guide ring 13；In the effect of No. two levers 3
Under, it is mobile that connecting rod 7 is pulled by connecting component 4, to drive nozzle degree adjustment valve 5 mobile, makes nozzle degree adjustment valve 5
It opens, sprays the ammonia air Mixture in ammonia branch pipe 10 and spray and at the flue gas flow rate tracking device 1 under the turbulent flow of flue gas
It is vigorously mixed with flue gas.
Flue gas flow rate tracking device 1 and No.1 lever 2 rotate according to the difference of flue gas flow rate around No.1 shaft 11 different
Angle, each flue gas flow rate tracking device 1 adjust accordingly nozzle degree adjustment valve 5 according to the flue gas flow rate of its position
Opening size, the flue gas flow rate range of response are 0-20m/s, adjust each nozzle 9 automatically according to flue gas flow rate to realize
The purpose of aperture；Nozzle degree adjustment valve 5 completely closes when flue gas flow rate is 0m/s, and with the increase of flue gas flow rate, nozzle is opened
The aperture for spending regulating valve 5 increases, to realize that ammonia spraying amount automatically tracks adjustment to flue gas flow rate.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (6)
1. a kind of adjust automatically strengthen simultaneously mixing and anti-blocking ammonia-spraying grid device, which is characterized in that including flue gas flow rate with
Track device, No.1 lever, No. two levers, connecting component, nozzle degree adjustment valve, elastomeric element, connecting rod, support ring, nozzle,
Spray ammonia branch pipe, No.1 shaft, No. two shafts and guide ring；The flue gas flow rate tracking device is connect with one end of No.1 lever,
The other end of the No.1 lever is connect by No.1 shaft with spray ammonia branch pipe；One end of No. two levers passes through No. two shafts
It is connect with No.1 lever, the other end of No. two levers is connect by connecting component with connecting rod；The connecting rod is located at spray
The inside of mouth, the connecting rod sequentially pass through nozzle degree adjustment valve and elastomeric element and connect with support ring, and the nozzle is opened
Degree regulating valve is located on nozzle, and the elastomeric element is located in nozzle, one end of the elastomeric element and nozzle degree adjustment valve
Adjacent and with nozzle inner wall is fixed, and the other end and the support ring of the elastomeric element are fixed；The guide ring is arranged in nozzle
Outer wall on, No. two levers run through guide ring；The nozzle is connected to spray ammonia branch pipe.
2. adjust automatically according to claim 1 strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, which is characterized in that
The nozzle is provided with several, several nozzles are arranged successively on spray ammonia branch pipe.
3. adjust automatically according to claim 2 strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, which is characterized in that
The nozzle is arranged vertically with spray ammonia branch pipe.
4. adjust automatically according to claim 1 strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, which is characterized in that
The flue gas flow rate tracking device and No.1 lever are rigidly connected.
5. adjust automatically according to claim 1 strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, which is characterized in that
The nozzle degree adjustment valve is inverted cone-shaped structure, and the nozzle degree adjustment valve is located at the end of nozzle, the nozzle aperture
Regulating valve and nozzle cooperate.
6. adjust automatically according to claim 1 strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously, which is characterized in that
The support ring is hollow plate structure, is circulated for gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719990.8U CN208583181U (en) | 2018-05-15 | 2018-05-15 | A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719990.8U CN208583181U (en) | 2018-05-15 | 2018-05-15 | A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously |
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| Publication Number | Publication Date |
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| CN208583181U true CN208583181U (en) | 2019-03-08 |
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| CN201820719990.8U Active CN208583181U (en) | 2018-05-15 | 2018-05-15 | A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device simultaneously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543420A (en) * | 2018-05-15 | 2018-09-18 | 华电电力科学研究院有限公司 | A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device and its spray ammonia method simultaneously |
-
2018
- 2018-05-15 CN CN201820719990.8U patent/CN208583181U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543420A (en) * | 2018-05-15 | 2018-09-18 | 华电电力科学研究院有限公司 | A kind of adjust automatically strengthens mixing and anti-blocking ammonia-spraying grid device and its spray ammonia method simultaneously |
| CN108543420B (en) * | 2018-05-15 | 2023-09-19 | 华电电力科学研究院有限公司 | Automatic-adjustment ammonia spraying grid device capable of simultaneously strengthening mixing and blocking prevention and ammonia spraying method thereof |
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