CN207980871U - Rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system - Google Patents
Rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system Download PDFInfo
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- CN207980871U CN207980871U CN201721430116.4U CN201721430116U CN207980871U CN 207980871 U CN207980871 U CN 207980871U CN 201721430116 U CN201721430116 U CN 201721430116U CN 207980871 U CN207980871 U CN 207980871U
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- ammonia
- rectangular nozzle
- spraying grid
- pipe
- spraying
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 238000005507 spraying Methods 0.000 title claims abstract description 73
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 67
- 239000003546 flue gas Substances 0.000 title claims abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 42
- 230000003068 static effect Effects 0.000 claims abstract description 42
- 229910001220 stainless steel Inorganic materials 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model is related to a kind of rectangular nozzle formula ammonia-spraying grids suitable for flue gas SCR denitration technique ammonia spraying system, including ammonia-spraying grid and static mixing device, the ammonia-spraying grid includes the spray ammonia pipe that several are equipped with rectangular nozzle, the static mixing device is located at the rear of the ammonia-spraying grid, if including dried layer disturbed flow pipe, plane where each layer disturbed flow pipe is parallel with plane where the ammonia-spraying grid, the static mixing device includes static mixer I and static mixer II, the static mixer I includes at least one layer of disturbed flow pipe parallel with the spray ammonia pipe, the static mixer II includes at least two layers of disturbed flow pipe vertical with the spray ammonia pipe, the disturbed flow pipe of the static mixer I is equipped with several turbulence blades groups corresponding with the rectangular nozzle.The utility model can improve mixing efficiency, and the uniformly mixed purpose of reducing agent can be realized in shorter flue length.
Description
Technical field
The utility model is related to a kind of ammonia-spraying grids, more particularly to a kind of to be suitable for flue gas SCR denitration technique ammonia spraying system
Rectangular nozzle formula ammonia-spraying grid.
Background technology
Selective catalytic reduction SCR（Selective Catalytic Reduction）It is control boiler nitrogen oxides
The important technical of discharge.SCR technology principle is in 320-400 DEG C of temperature range, and the NOx in flue gas is in catalyst
Under effect, with the reducing agent in penetrating flue（Ammonium hydroxide, liquefied ammonia or urea etc.）Reaction generates N2, to realize NOx abatement
Purpose.The technique has denitration efficiency high（Generally up to 80-95%）, mature production technology, non-secondary pollution, to boiler transport
Row influences the features such as smaller.From current technology both domestic and external apply and development trend from the point of view of, in particular with minimum discharge technology
Most of areas are gradually promoted at home, and SCR techniques denitration efficiency is high, and the market demand constantly expands, and in the flue gas of application
The overwhelming majority is occupied in denitrification apparatus, it is considered to be most important denitrating flue gas administers skill now or even in suitable long-term later
Art.
The key of SCR technological designs is to realize being sufficiently mixed for nitrogen oxides in effluent and reducing agent.If catalyst inlet
Locate ammonia nitrogen mixing unevenness and the problem of not only reducing the efficiency of denitrating flue gas, can also bring the escaping of ammonia, does not participate in going back for reaction
Former agent ammonia enters downstream and the SO in flue gas3Reaction production ammonium hydrogen sulfate.Ammonium hydrogen sulfate has very strong adsorptivity, easily causes
A large amount of ash-depositions cause to block in air preheater surfaces, and reduce the heat transfer efficiency of air preheater；In addition, hydrogen sulfate
Ammonium also has very strong corrosivity, and accumulation for a long time can reduce the service life of air preheater.It can be seen that flue gas and reducing agent
The uniform mixing of ammonia extends catalyst service life, reduces investment and operational management cost, ensure dress for improving denitration efficiency
Stable operation is set to be of great significance.The mixing of flue gas and reducing agent ammonia is mainly realized by ammonia-spraying grid.
The ammonia-spraying grid based on round nozzle that SCR denitration technique uses at this stage, have it is simple for process, reducing agent ammonia with
The features such as flue gas mixing efficiency is not high.So in order to ensure that the mass concentration mixing of the first floor catalyst inlet ammonia in SCR is equal
It is even, extension is mostly used greatly from ammonia-spraying grid to the means of catalyst inlet flue using the engineering of this type ammonia-spraying grid, is carried
The means such as panel flow-disturbing realization above-mentioned purpose is arranged in high nozzle ammonia/sky mixer flow velocity before each nozzle, and this is undoubtedly
The problems such as increase of design cost of investment and the pressure drop of denitrating system can be brought to become larger.
Utility model content
In order to solve the above technical problems, the utility model, which provides one kind, being suitable for flue gas SCR denitration technique ammonia spraying system
Rectangular nozzle formula ammonia-spraying grid, mixing efficiency can be improved, can be realized in shorter flue length reducing agent be uniformly mixed
Purpose.
The technical solution of the utility model is：
A kind of rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system, including ammonia-spraying grid and
Static mixing device, the ammonia-spraying grid include the spray ammonia pipe that several are equipped with rectangular nozzle, are used for reducing agent ammonia/air group
At gaseous mixture spray into flue, for jet velocity between 12~19m/s, which is 2~4 times of velocity of flue gas, and
Meet design requirement of the ammonia-spraying grid about velocity of flue gas, the static mixing device is located at the rear of the ammonia-spraying grid, packet
If including dried layer disturbed flow pipe, plane where each layer disturbed flow pipe is parallel with plane where the ammonia-spraying grid, due to rectangular nozzle
More traditional round nozzle has stronger flow-disturbing to act on, and coordinates and acted on the flow-disturbing of disturbed flow pipe described in multilayer, may make also
The mass concentration of former agent ammonia is evenly distributed in SCR catalyst inlet.
Preferably, the static mixing device includes forming static mixer I and static mixer II, the static mixing
Device I includes at least one layer of disturbed flow pipe parallel with the spray ammonia pipe, and the static mixer II includes at least two layers and the spray
The vertical disturbed flow pipe of ammonia pipe, the static mixer I are described quiet between the ammonia-spraying grid and the static mixer II
The disturbed flow pipe of state mixer I is parallel to the spray ammonia pipe, reduces the resistance of mixed gas to the greatest extent, keeps higher speed, described
Two layers of disturbed flow pipe main function of static mixer II is flow-disturbing, and uniform mixed gas, each flow-disturbing are obtained by flow-disturbing
Pipe uses square tube or pipe.
Preferably, the disturbed flow pipe of the static mixer I is equipped with several turbulence blades corresponding with the rectangular nozzle
Group obtains better flow-disturbing effect.
Preferably, the turbulence blades group includes the turbulence blades of several distributions, and preferred amount is 4 and the flow-disturbing
Projection of the axis of the axis of blade and the disturbed flow pipe on flue cross section is in 45 ° of angles.
Preferably, it is connecting pin that the shape of the turbulence blades, which is trapezoidal and smaller one end, the turbulence blades and institute
The setting angle that ammonia-spraying grid is kept for 0 ° -90 ° is stated, preferably 45 °, this angle can ensure maximum movement velocity and minimum
Resistance.
Preferably, two layers of disturbed flow pipe interlaced arrangement of the static mixer II, preferably below a layer number than in described
The quantity of layer disturbed flow pipe is one more, and the gas in gap can all bump against one below across two fronts, one layer of disturbed flow pipe in this way
The mixed effect of one layer of disturbed flow pipe, gas can be more preferable.
Preferably, the rectangular nozzle is connected to the spray ammonia pipe by the way that the through-hole on the spray ammonia pipe is arranged, described logical
Hole is less than the endoporus of the rectangular nozzle, and the rectangular nozzle is connected to the outside of the spray orifice by welding, described
The axis direction of rectangular nozzle is vertical with the plane where the ammonia-spraying grid and towards the rear, ensures the reduction that the nozzle sprays
Agent ammonia is consistent with the direction of flue gas.
Preferably, the rectangular nozzle is the rectangle of 15~50mm of the length of side, and chamfering is equipped on the outside of outlet end, guiding outside
Flue gas moves to the front of the rectangular nozzle along the inclined-plane of chamfering, and the gas sprayed with the rectangular nozzle is mixed, institute
It is 80~200mm to state rectangular nozzle and stretch into flue length, and clipping room is away from for 400~800mm, according to the reduction in the spray ammonia pipe
The pressure and speed of agent ammonia/air gas mixture select suitable parameter, and the gas that the rectangular nozzle sprays is enable to cover
The cross section of flue.
Preferably, one end of the spray ammonia pipe is equipped with the fixing device for connecting flue, and the other end is equipped with for connecting
The interface of regulating valve realizes that the fixed point of ammonia/air Mixture is precisely sprayed, to match cigarette by regulating valve according to the variation of operating mode
The concentration distribution of nitrogen oxides in gas.
Preferably, the spray ammonia pipe is the stainless steel tube of DN25~100, and the disturbed flow pipe is the stainless steel tubes of DN50~200.
The beneficial effects of the utility model are：
The utility model provides a kind of nozzle design of the ammonia-spraying grid based on hydrodynamic analysis, using square
Shape nozzle replaces existing round nozzle, can shorten the spacing of ammonia-spraying grid and catalyst inlet, for site layout project complexity
Boiler improvement project it is with the obvious advantage.The beneficial effects of the utility model are also embodied in the following aspects：
One, rectangular nozzle formula ammonia-spraying grids spray the turbulence dissipation rate higher of fluid, and the turbulence effects itself generated are more preferable,
Flue length can be reduced in the SCR denitration transformation of miniature boiler, improves the utilization rate of denitrating catalyst；
The system stability of two, rectangular nozzle formula ammonia-spraying grids is good；
Three, static mixers obtain the mixing of better flue gas and reducing agent ammonia under the premise of not increasing flue gas pressure drop
Effect；
Four, the utility model have good thermal expansivity, thermal denaturation resistant and vibration resistance；
Five, ammonia-spraying grids every spray the included regulating valve of ammonia pipe, can realize ammonia/air Mixture according to the variation of operating mode
Fixed point precisely spray, to match the concentration distribution of nitrogen oxides in effluent；
Six, often sweep along the flying dust of certain content, the utility model to be mainly characterized by view of SCR flue gas denitrification systems flue gas
It is simple in structure, distributed effect is good, be not easy dust stratification, and can be with the abrasion of effective protection ammonia-spraying grid nozzle；
The mixing resistance of seven, the utility model is low, and entire flue gas denitrification system resistance is brought to reduce, thus reduces cigarette
The unit cost of qi exhaustion nitre.
Description of the drawings
Fig. 1 is one side schematic view of the utility model embodiment；
Fig. 2 is another side schematic view of Fig. 1 illustrated embodiments；
Fig. 3 is the utility model turbulence blades schematic diagram；
Fig. 4 is the utility model rectangular nozzle schematic diagram.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
As Figure 1-Figure 4, the utility model is related to a kind of rectangle sprays suitable for flue gas SCR denitration technique ammonia spraying system
Mouth formula ammonia-spraying grid, including ammonia-spraying grid and static mixing device, the ammonia-spraying grid include that several are equipped with rectangular nozzle
Ammonia stainless steel tubing is sprayed, the static mixing device is located at the rear of the ammonia-spraying grid, including static mixer I and static state are mixed
Clutch II.
By taking size is the flue of 2000 × 1300mm as an example, in the spray for arranging four DN50 on flue long side direction
Ammonia stainless steel tubing（Spray ammonia pipe）7, the two neighboring spacing sprayed between ammonia stainless steel tubing 7 is 500mm, the every spray
Ammonia stainless steel tubing 7 arranges that 3 length of sides are the rectangular nozzle 4 of 20mm, and the spacing between the two neighboring rectangular nozzle 4 is
432mm, totally 12 nozzles, one end of the spray ammonia stainless steel tubing 7 are equipped with the fixing device 5 for connecting flue, the other end
Equipped with the interface 6 for connecting regulating valve；Thereafter arrange static mixer I and static mixer II, the static mixer I by
Four with above-mentioned pipeline at a distance of the stainless steel tubing of 300mm（Lower layer's disturbed flow pipe）3 compositions, every lower layer's stainless steel tubing 3
3 turbulence blades groups of upper installation, each hybrid blade group include four turbulence blades 8 and with the position of the rectangular nozzle 4
Corresponding, 3 installation direction of stainless steel tubing of the static mixer I is consistent with spray ammonia 7 installation directions of stainless steel tubing
And installation site is corresponding, static mixer II is then by the stainless steel tubing of the 7 piece DN80 vertical with I direction of the mixer
Divide two layers of composition, respectively one layer of front stainless steel tubing（One layer of front disturbed flow pipe）2 and one layer of stainless steel tubing below（Below
One layer of disturbed flow pipe）1, primarily serve the effect of flue gas flow-disturbing, one layer of stainless steel tubing 2 below and the spray ammonia stainless steel tube
Spacing between line 3 is 500mm, it is described below between one layer of stainless steel tubing 1 and one layer of front stainless steel tubing 2 between
Away from for 500mm.
Ammonia/air Mixture that volume fraction is 5% enters by rectangular nozzle formula ammonia-spraying grid in flue, is sprayed in rectangle
Under the flow-disturbing effect that mouth generates, cooperation is acted on the turbulent closure scheme of flue static mixer I and II, in SCR reactor catalysts
Inlet realize the effect that is evenly distributed of mass fraction of ammonia.By CFD flow field simulations calculate, the novel ammonia-spraying grid and
The pressure drop that static mixer generates is 180Pa, is less than the requirement of ammonia spraying system design mark 200Pa, it is entire to be conducive to control
The pressure drop that denitrating system is brought is within the scope of 1000Pa.In addition, analysis shows using round nozzle type ammonia-spraying grid SCR denitration
System needs the flue distance from ammonia-spraying grid to first floor catalyst inlet to exist to realize that first floor catalyst inlet ammonia is evenly distributed
10 m or more.Under same flue gas scale, flue length 22% or so will then be saved using the system of novel ammonia-spraying grid.
Related experiment is analyzed as follows：
Under identical equipment arrangement, respectively to rectangular nozzle formula ammonia-spraying grid（Aerodynamic diameter 20mm）And circle
Nozzle-type ammonia-spraying grid（Φ=20mm）CFD flow field simulation analyses are carried out, find the cigarette in novel rectangular nozzle formula ammonia-spraying grid
At road catalyst inlet, the mass fraction root-mean-square-deviation rate Cv ≈ 4.5% of reducing agent ammonia, traditional round nozzle formula sprays ammonia lattice
The mass fraction root-mean-square-deviation rate of grid reducing agent ammonia is then 12%.In addition to this, in maximum temperature deviation, flue gas incidence catalysis
Agent angle（With the angle of vertical direction）The novel ammonia-spraying grid of aspect all shows preferably.
Compared to round nozzle, when the mixer of reducing agent ammonia/air enters flue gas by square nozzle high speed, due to square
The corner angle of shape nozzle make the turbulence dissipation rate bigger of gaseous mixture, and it is more violent that reducing agent ammonia enters the turbulent flow after flue, with cigarette
The mixability of gas is more excellent.The flow-disturbing of the static mixer of hybrid blade and straight tube beam is coordinated to act on again, ammonia/nitrogen molar ratio
Distribution at the first layer catalyst inlet of SCR reactors can be more uniform, avoids bringing because ammonia/nitrogen local area distribution is excessively high
The problems such as the escaping of ammonia is significantly, the catalytic efficiency of catalyst is not high.
It is disclosed by the utility model it is each preferably with optional technological means, unless otherwise indicated and a preferred or optional skill
Art means are that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (15)
1. a kind of rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system, including ammonia-spraying grid and quiet
State mixing arrangement, it is characterised in that the ammonia-spraying grid includes the spray ammonia pipe that several are equipped with rectangular nozzle, the static mixing
Device is located at the rear of the ammonia-spraying grid, if including dried layer disturbed flow pipe, each layer disturbed flow pipe place plane and the spray ammonia
Plane where grid is parallel.
2. rectangular nozzle formula ammonia-spraying grid according to claim 1, it is characterised in that the static mixing device includes quiet
State mixer I and static mixer II, the static mixer I include at least one layer of disturbed flow pipe parallel with the spray ammonia pipe,
The static mixer II includes at least two layers of disturbed flow pipe vertical with the spray ammonia pipe, and the static mixer I is located at described
Between ammonia-spraying grid and the static mixer II.
3. rectangular nozzle formula ammonia-spraying grid according to claim 2, it is characterised in that the disturbed flow pipe of the static mixer I
Equipped with several turbulence blades groups corresponding with the rectangular nozzle.
4. rectangular nozzle formula ammonia-spraying grid according to claim 3, it is characterised in that the turbulence blades group includes several
A equally distributed turbulence blades.
5. according to any rectangular nozzle formula ammonia-spraying grids of claim 1-4, it is characterised in that the shape of the turbulence blades
Shape is that trapezoidal and smaller one end is connecting pin, and the turbulence blades keep 0 ° -90 ° of setting angle with the ammonia-spraying grid.
6. rectangular nozzle formula ammonia-spraying grid according to claim 5, it is characterised in that two layers of the static mixer II
Disturbed flow pipe interlaced arrangement.
7. rectangular nozzle formula ammonia-spraying grid according to claim 6, it is characterised in that the rectangular nozzle is existed by setting
Through-hole on the spray ammonia pipe is connected to the spray ammonia pipe, and the through-hole is less than the endoporus of the rectangular nozzle, the rectangular nozzle
Be connected to the outside of the spray orifice by welding, the axis direction of the rectangular nozzle with where the ammonia-spraying grid
Plane is vertical and towards rear.
8. rectangular nozzle formula ammonia-spraying grid according to claim 7, it is characterised in that the rectangular nozzle be the length of side 15~
The rectangle of 50mm, and outlet end on the outside of be equipped with chamfering, the rectangular nozzle stretch into flue length be 80~200mm, clipping room away from
For 400~800mm.
9. rectangular nozzle formula ammonia-spraying grid according to claim 8, it is characterised in that one end of the spray ammonia pipe, which is equipped with, to be used
In the fixing device of connection flue, the other end is equipped with the interface for connecting regulating valve.
10. rectangular nozzle formula ammonia-spraying grid according to claim 9, it is characterised in that the spray ammonia pipe is DN25~100
Stainless steel tube, the disturbed flow pipe be the stainless steel tubes of DN50~200.
11. rectangular nozzle formula ammonia-spraying grid according to claim 6, it is characterised in that the quantity ratio of one layer of disturbed flow pipe below
The quantity of the one layer of disturbed flow pipe in front is one more.
12. rectangular nozzle formula ammonia-spraying grid according to claim 11, it is characterised in that the rectangular nozzle passes through setting
Through-hole on the spray ammonia pipe is connected to the spray ammonia pipe, and the through-hole is less than the endoporus of the rectangular nozzle, the rectangle spray
Mouth is connected to the outside of the spray orifice, the axis direction of the rectangular nozzle and ammonia-spraying grid place by welding
Plane it is vertical and towards rear.
13. rectangular nozzle formula ammonia-spraying grid according to claim 12, it is characterised in that the rectangular nozzle is the length of side 15
The rectangle of~50mm, and chamfering is equipped on the outside of outlet end, it is 80~200mm, clipping room that the rectangular nozzle, which stretches into flue length,
Away from for 400~800mm.
14. rectangular nozzle formula ammonia-spraying grid according to claim 13, it is characterised in that one end of the spray ammonia pipe is equipped with
Fixing device for connecting flue, the other end are equipped with the interface for connecting regulating valve.
15. rectangular nozzle formula ammonia-spraying grid according to claim 14, it is characterised in that the spray ammonia pipe is DN25~100
Stainless steel tube, the disturbed flow pipe be the stainless steel tubes of DN50~200.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721430116.4U CN207980871U (en) | 2017-11-01 | 2017-11-01 | Rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721430116.4U CN207980871U (en) | 2017-11-01 | 2017-11-01 | Rectangular nozzle formula ammonia-spraying grid suitable for flue gas SCR denitration technique ammonia spraying system |
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|---|---|
| CN207980871U true CN207980871U (en) | 2018-10-19 |
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432978A (en) * | 2018-12-28 | 2019-03-08 | 启明星宇节能科技股份有限公司 | A kind of denitration flue gas disturbance device |
| CN110193285A (en) * | 2019-07-12 | 2019-09-03 | 中电华创(苏州)电力技术研究有限公司 | A kind of ammonia injection flow mixing device of SCR denitration system |
| CN112742232A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Ammonia spraying static mixer |
| CN113144896A (en) * | 2021-01-26 | 2021-07-23 | 成都易态科技有限公司 | Flue gas dust removal and denitration device |
-
2017
- 2017-11-01 CN CN201721430116.4U patent/CN207980871U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432978A (en) * | 2018-12-28 | 2019-03-08 | 启明星宇节能科技股份有限公司 | A kind of denitration flue gas disturbance device |
| CN110193285A (en) * | 2019-07-12 | 2019-09-03 | 中电华创(苏州)电力技术研究有限公司 | A kind of ammonia injection flow mixing device of SCR denitration system |
| CN112742232A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Ammonia spraying static mixer |
| CN113144896A (en) * | 2021-01-26 | 2021-07-23 | 成都易态科技有限公司 | Flue gas dust removal and denitration device |
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