CN205850592U - A kind of SCR denitration system flue gas duct uniforming device - Google Patents
A kind of SCR denitration system flue gas duct uniforming device Download PDFInfo
- Publication number
- CN205850592U CN205850592U CN201620715781.7U CN201620715781U CN205850592U CN 205850592 U CN205850592 U CN 205850592U CN 201620715781 U CN201620715781 U CN 201620715781U CN 205850592 U CN205850592 U CN 205850592U
- Authority
- CN
- China
- Prior art keywords
- scr denitration
- deflector
- arc
- straight
- denitration system
- 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.)
- Active
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
This utility model provides a kind of SCR denitration system flue gas duct uniforming device, including: in flue corner, SCR denitration system ammonia-spraying grid AIG downstream with at least three arcs straight type deflector of equidistant radial arrangement；At least three straight arc straight type deflectors of tapered layout and the most a piece of straight arc deflector in flue is cut sth. askew on the reactor top of SCR denitration system.Can effectively reduce the VELOCITY DISTRIBUTION deviation in first floor catalyst inlet cross section, and ensure that the space velocity of catalyst layer is distributed all within rational scope of design, can effectively promote the denitration performance of SCR denitration system, solve the series of problems such as SCR denitration abrasion inactivation, the escaping of ammonia is higher, upstream device is impaired.
Description
Technical field
This utility model relates to a kind of SCR denitration system flue gas duct uniforming device, belongs to coal unit pollutant row
Put control technical field.
Background technology
SCR (Selective Catalyst Reduction, SCR) technology is the outer main flow of Present Domestic
Gas denitrifying technology, based on reducing agent (liquefied ammonia/urea/ammonia water) and nitrogen oxides in effluent (NOx) in the change of catalyst layer
Learn reaction, it is achieved effective removing of NOx in flue gas.
The reaction of SCR denitrating flue gas is a kind of gas-solid heterogeneous catalytic reaction, and its course of reaction includes that reactant is at catalyst
The diffusion on surface, adsorb, react and the step such as desorption of product, related to outer mass transfer, inner transmission matter process and the change on surface
Learn course of reaction.Therefore, the rational space velocity of catalyst layer for ensure SCR denitration reaction efficiently carry out there is crucial work
With.
Research shows, the air speed that SCR denitration layer is relatively low, it is ensured that reactant is in the longer stop of catalyst layer
Time, the time of staying is the longest, then diffusion process is the most complete, and denitration efficiency is of a relatively high；Otherwise, the air speed that catalyst layer is too high
The reactant in flue gas can be caused to have little time to spread and be i.e. discharged, directly result in the bad problems such as the escaping of ammonia, be unfavorable for that denitration is anti-
That answers is smoothed out, and now for ensureing denitration efficiency up to standard, denitrating catalyst consumption need to be significantly increased, and this can dramatically increase electricity
The cost of investment of manufacturer.Therefore, actual application needs the space velocity ensureing SCR denitration within the scope of reasonably,
And then make that denitration efficiency reaches the highest, catalyst amount is minimum.
When SCR denitration system is designed and constructed at the scene, often have no alternative but because of the restriction of the factors such as site layout project space
Employing is reduced or the Flue duct design method such as flaring, and SCR denitration system self has more turning structure design etc. simultaneously, these
All it is unfavorable for the Uniform Flow of flue gas in flue, will result directly in that flue gas local flow speed is too high/too low, produce whirlpool and return
The problems such as stream, and then cause the space velocity fluctuation range of SCR denitration layer relatively greatly, it is unfavorable for entering smoothly of denitration reaction
OK.Meanwhile, too high in system flue gas flow rate can cause the abrasion inactivation etc. of SCR denitration.
Utility model content
For effectively solving the inhomogeneities of coal unit SCR denitration system flow field distribution, this utility model provides one
Plant SCR denitration system flue gas duct uniforming device, it is possible to effectively reduce the VELOCITY DISTRIBUTION deviation in first floor catalyst inlet cross section,
And ensure that the space velocity of catalyst layer is distributed all within rational scope of design, can effectively promote the de-of SCR denitration system
Nitre performance, solves the series of problems such as SCR denitration abrasion inactivation, the escaping of ammonia is higher, upstream device is impaired.
For achieving the above object, the concrete skill scheme that this utility model is taked is:
A kind of SCR denitration system flue gas duct uniforming device, including:
With equidistant radial arrangement at least three, flue corner, the ammonia-spraying grid AIG downstream arc-straight of SCR denitration system
Type deflector；
It is arranged in the reactor top of SCR denitration system at least three straight-arc-straight types in flue of cutting sth. askew with tapered manner to lead
Stream plate and the most a piece of directly-camber deflector.
Further, every described arc-straight type deflector includes a segmental arc deflector and a straight section deflector, described directly
Section deflector is connected along the tangential of described segmental arc deflector with segmental arc deflector.
Further, described segmental arc deflector is 85-105 ° to center of circle angle, preferably 90 °, segmental arc radius between
Between 1000mm～2000mm；Described straight section deflector length is less than 500mm.
Further, the arrangement pitch of described arc-straight type deflector is not less than 700mm.
Further, every described directly-arc-straight type deflector includes straight section, a long arc shape before the most tangentially connected one
Straight section after section and；Described directly-camber deflector includes a most tangentially connected straight section and a short arc section.
Further, corresponding to described long arc shape section, center of circle angle is between 10 °～90 °, radius between 500mm～
Between 3000mm, the length of front straight section and rear straight section is less than 1000mm.
Further, corresponding to described short arc section, center of circle angle is between 10 °～90 °, radius between 500mm～
Between 1500mm, described straight section length is less than 500mm.
Further, described directly-camber baffle arrangement in three described directly-lower section of arc-straight type deflector.
Further, adjacent two panels is straight-arc-straight type deflector between and be positioned at the straight-arc-straight type deflector of bottom
And described directly-camber deflector between vertical direction minimum spacing not less than 400mm.
Compared with traditional SCR denitration system even flow field metallization processes, this utility model has the advantages that
Existing SCR denitration system flue Inner guide parts are arranged simple, lack through systematic research and checking, part machine
Group is even without diversion component preferred arrangement, and in this directly results in flue, flue gas flow field distributing homogeneity is poor, is unfavorable for that denitration is anti-
That answers is efficiently carried out.A kind of SCR denitration system inclined cutout flue gas duct homogenization method disclosed in the utility model, it is proposed that
Three arc-straight type deflectors and four straight-arc-straight type deflector flow fieldoptimization arrangements, and based on design orthogonal test
The operational factor system analysis of method and object unit SCR denitration system reality obtains the best features parameter of diversion component, as
Segmental arc radian and radius, extension length.The method systematicness is strong, with strong points, can be effectively improved SCR denitration system and cut sth. askew
Flow field uniformity in formula flue, significantly reduces the VELOCITY DISTRIBUTION deviation in first floor catalyst inlet cross section, it is ensured that catalyst layer
Space velocity is distributed all within rational scope of design, and then effectively promotes the denitration performance of SCR denitration system, solves SCR
The series of problems such as denitrating catalyst abrasion inactivation, the escaping of ammonia is higher, upstream device is impaired.
Accompanying drawing explanation
Fig. 1 is the structural plan that a SCR denitration system uses conventional pilot stream mode.
Fig. 2 is the SCR denitration system flue gas duct homogenization method in this utility model one embodiment and the structure of device
Layout drawing.
Fig. 3 a, Fig. 3 b, Fig. 3 c, Fig. 3 d and Fig. 3 e are that in this utility model one embodiment, SCR denitration system flue gas duct is equal
The physical dimension figure of each specification deflector in homogenizing method and device.
Detailed description of the invention
Being described in detail this utility model below in conjunction with the accompanying drawings, the implementation case is under premised on the technical program
Implement, it should be understood that case study on implementation illustrates that this utility model, but protection domain of the present utility model does not limits to
In described case study on implementation.
The implementation case carries out SCR denitration system even flow field for certain power plant 660MW supercritical Thermal generation unit
Adjust.This unit SCR denitration system uses traditional diversion mode, and its structure scheme is as it is shown in figure 1, left side flue corner
Arrange that two panels deflector 31,41 is arranged in two deflectors 11,21 and flue corner, right side.
First, being simulated calculating according to the concrete specification of SCR denitration system, modeling arrangement, with reference to Fig. 2, wherein wraps
Include: before ammonia-spraying grid, flue gas flows 1, ammonia-spraying grid 2, AIG mixing tube 3, flue corner, left side deflector group (comprise three
Arc-straight type deflector: deflector 12, deflector 22 and deflector 32) 4, flue corner, right side deflector group 5 (comprise three
Directly-arc-straight type deflector and a piece of directly-camber deflector: deflector 42, deflector 52, deflector 62 and deflector 42), tiltedly
After cutting flue end face 6, flow straightening grid 7, SCR denitration layer 8, SCR denitration layer, flue gas goes to flow 9.
First arrange water conservancy diversion teams and groups 4 as shown in Figure 2 in left side, work is designed without deflector preferred arrangement in flue corner, right side
Numerical simulation study under condition.
Left side flue corner arc-straight type deflector has equidistantly, etc. radian, etc. radius, etc. the features such as prolongation, and pass through
Design orthogonal test obtains the optimal value of each characteristic parameter, with the VELOCITY DISTRIBUTION in SCR denitration system first floor catalyst inlet cross section
Deviation is evaluation index；
Four straight-arcs-straight type deflector is arranged in flue corner, right side, and flue corner, left side is arranged and obtained optimal spy
Levy the numerical simulation study under the three arcs-straight type deflector design conditions of parameters revision.
Flue corner, right side is straight-and arc-straight type deflector has the radian such as tapered, non-, radius, the non-homogeneous prolongation etc. such as non-
Feature, and obtain the optimal value of each characteristic parameter, with SCR denitration system first floor catalyst inlet cross section by design orthogonal test
VELOCITY DISTRIBUTION deviation be evaluation index.
Pass through numerical simulation calculation, it is thus achieved that SCR denitration system flue gas duct homogenization method and the applicable layout side of device
Formula and dimensional parameters scope.
Wherein, method comprises the following steps:
In flue corner, SCR denitration system ammonia-spraying grid AIG downstream with at least three arcs of equidistant radial arrangement-straight type
Deflector；
In flue is cut sth. askew on the reactor top of SCR denitration system tapered layout at least three straight-arc-straight type deflector and
The most a piece of directly-camber deflector.
Every described arc-straight type deflector includes a segmental arc deflector and a straight section deflector, described straight section deflector
Tangential along described segmental arc deflector is connected with segmental arc deflector.
Described segmental arc deflector is 85-105 ° to center of circle angle, preferably 90 °, segmental arc radius between 1000mm～
Between 2000mm；Described straight section deflector length is less than 500mm.
The arrangement pitch of described arc straight type deflector is not less than 700mm.
Every described directly-arc-straight type deflector includes before the most tangentially connected one straight after straight section, a long arc shape section and
Section；Described directly-camber deflector includes a most tangentially connected straight section and a short arc section.
Corresponding to described long arc shape section, center of circle angle is between 10 °～90 °, radius between 500mm～3000mm,
The length of front straight section and rear straight section is less than 1000mm.
Corresponding to described short arc section, center of circle angle is between 10 °～90 °, radius between 500mm～1500mm,
Described straight section length is less than 500mm.
Described directly-camber baffle arrangement in three described directly-lower section of arc-straight type deflector.
Adjacent two panels is straight-arc-straight type deflector between and be positioned at the straight-arc-straight type deflector of bottom with described directly-
Vertical direction minimum spacing between camber deflector is not less than 400mm.
Device includes:
With equidistant radial arrangement at least three, flue corner, the ammonia-spraying grid AIG downstream arc-straight of SCR denitration system
Type deflector；
It is arranged in the reactor top of SCR denitration system at least three straight-arc-straight types in flue of cutting sth. askew with tapered manner to lead
Stream plate and the most a piece of directly-camber deflector.
The SCR denitration system inclined cutout flue gas duct homogenization method provided based on the present embodiment and device, according to specifically
The enforcement step that SCR denitration system structure obtains the optimal design parameter adapting to this concrete SCR denitration system structure is as follows:
1) three arcs-straight type deflector is arranged in flue corner, left side (i.e. turning, ammonia-spraying grid AIG downstream)
It is first considered that and is arranged that three arcs-straight type deflector arc section radian is set as 90 °, and is equidistant placement, subsequently
The affecting laws that system flow field distributing homogeneity is improved by research arc section radius, extension length the two factor.This reality
4 levels, extension length is counted with arc section radial design 750mm, 1000mm, 1250mm, 1500mm in novel embodiment
Design 100mm, 200mm, 300mm, 400mm count 4 levels, select L1645Orthogonal trial two factor four horizontal quadrature is tested,
As shown in table 1.
Best features parameter determination orthogonal test designs table in flue corner on the left of table 1
Obtain testing SCR denitration system first floor catalyst inlet cross section under 10 design conditions based on CFD numerical simulation calculation
Interior VELOCITY DISTRIBUTION deviation is minimum.Then it is believed that arranged the optimal of three arcs-straight type deflector at the flue corner of left side
Arrangement parameter is: equidistant placement, arc section radian are 90 °, arc section diameter is 1250mm, extension length is 200mm,
Its concrete structure size is as shown in Figure 3 a.
2) three straight-arcs-straight type deflector and a piece of is arranged on flue corner, right side (i.e. turning, flow straightening grid upstream)
Directly-camber deflector
Flue corner, left side is arranged under the three arcs-straight type deflector design conditions having obtained best features parameters revision
Carry on numerical simulation study.Systematically research arc section combined radius mode, arc section radian compound mode, tapered layout
Compound mode, front end extension length combination mode, these five factors of rear end extension length combination mode are to system flow field
The affecting laws that distributing homogeneity improves.
Of the present utility model it be embodied as five research factors in case and be respectively designed with different number of levels, wherein: circle
Segmental arc combined radius mode designs 1-[600,1500,1500,2000], [700,1800,1800,2400] two levels of 2-altogether；
Arc section radian compound mode design altogether 1-[50 °, 10 °, 10 °, 5 °], 2-[55 °, 15 °, 15 °, 10 °], 3-[60 °, 20 °,
20 °, 15 °] three levels；Tapered arrangement combinations mode design altogether 1-[750,650,550,475,475], 2-[800,700,
600,400,400] two levels；Front end extension length combination mode design altogether 1-[100,500,500,700], 2-[200,
600,600,800] two levels；Rear end extension length combination mode design altogether 1-[0,700,900,900], 2-[0,800,
1000,1000] two levels.Select L12(3×24) orthogonal array design orthogonal test, as shown in table 2.
Best features parameter determination orthogonal test designs table in flue corner on the right side of table 2
Obtain testing under 9 design conditions in SCR denitration system first floor catalyst inlet cross section based on CFD numerical simulation calculation
VELOCITY DISTRIBUTION deviation minimum.Then it is believed that arranged four four straight-arcs-straight type deflector at the flue corner of right side
Optimal placement parameter is 3-1-2-1-2, and the concrete structure size of each deflector is as shown in Fig. 3 b, Fig. 3 c, Fig. 3 d and Fig. 3 e.
In sum, the SCR denitration system inclined cutout flue gas duct homogenization method described based on above-described embodiment and dress
Put, according to the operational factor etc. that object unit SCR denitration system is actual, the implementation case resolves smoothly and obtains diversion component
Best features parameter, obtained the diversion component optimization placement method effectively for object unit SCR denitration system.Based on this
Before and after utility model method SCR denitration system flow fieldoptimization, uniformity profile is as shown in table 3.
Table 3 is embodied as in case distribution character contrast table before and after flow fieldoptimization
It can be seen that the VELOCITY DISTRIBUTION deviation in first floor catalyst inlet cross section significantly reduces about 35.77% before and after You Huaing, it is
Flow Field Distribution uniformity in system greatly improves, based on CFD method for numerical simulation gained SCR denitration system first floor catalyst inlet
VELOCITY DISTRIBUTION cloud atlas in cross section can also reflect this trend intuitively.
Can be illustrated by the implementation case, a kind of SCR denitration system inclined cutout flue stream disclosed in the utility model
Field homogenization method, can be effectively improved the flow field uniformity in SCR denitration system inclined cutout flue, significantly reduce first floor catalyst
VELOCITY DISTRIBUTION deviation in entrance section, so ensure catalyst layer space velocity distribution all rational scope of design it
In, this for effectively promote SCR denitration system denitration performance, solve SCR denitration abrasion inactivation, the escaping of ammonia higher,
Upstream device is impaired waits series of problems to be respectively provided with important directive significance.
Accordingly, on the premise of not changing SCR denitration system self structure, reasonably led by preferred arrangement in flue
Stream unit, can realize being uniformly distributed of flue gas flow field in flue, and this can significantly improve the inequality of its inner space VELOCITY DISTRIBUTION
Even property so that the space velocity of any locus of SCR denitration layer is distributed all within rational scope of design, alleviates
The abrasion inactivation etc. of denitrating catalyst, this is conducive to the high-efficiency and economic safe operation of SCR flue gas denitrification system.
Therefore, this utility model proposes a kind of SCR denitration system in support based on the studies above background and rationale
System inclined cutout flue gas duct homogenization method, the flow field that the method can be effectively improved in SCR denitration system inclined cutout flue is equal
Even property, significantly reduces the VELOCITY DISTRIBUTION deviation in first floor catalyst inlet cross section, it is ensured that the space velocity distribution of catalyst layer all exists
Reasonably within scope of design, and then effective denitration performance promoting SCR denitration system, solve SCR denitration abrasion and lose
The series of problems such as work, the escaping of ammonia is higher, upstream device is impaired.
Although as it has been described above, combination is embodied as case and accompanying drawing and is retouched detailed description of the invention of the present utility model
State, but it shall not be construed as the restriction to this utility model self.On the basis of the technical solution of the utility model, Ren Hedan
Position and individual need not to pay various amendments or deformation that creative work can make still at protection model of the present utility model
Within enclosing.
Claims (9)
1. a SCR denitration system flue gas duct uniforming device, it is characterised in that including:
With equidistant radial arrangement at least three, flue corner, the ammonia-spraying grid downstream arc-straight type water conservancy diversion of SCR denitration system
Plate；
It is arranged in the reactor top of SCR denitration system with tapered manner to cut sth. askew at least three straight-arc-straight type deflectors in flue
The most a piece of directly-camber deflector.
2. SCR denitration system flue gas duct uniforming device as claimed in claim 1, it is characterised in that every described arc-straight
Type deflector includes a segmental arc deflector and a straight section deflector, described straight section deflector cutting along described segmental arc deflector
It is connected to segmental arc deflector.
3. SCR denitration system flue gas duct uniforming device as claimed in claim 2, it is characterised in that described segmental arc is led
Stream plate is 85-105 ° to center of circle angle, and segmental arc radius is between 1000mm ~ 2000mm；Described straight section deflector length
Less than 500mm.
4. SCR denitration system flue gas duct uniforming device as claimed in claim 2, it is characterised in that described arc-straight type is led
The arrangement pitch of stream plate is not less than 700mm.
5. SCR denitration system flue gas duct uniforming device as claimed in claim 1, it is characterised in that every described directly-
Straight section after straight section, a long arc shape section and before arc-directly type deflector includes the most tangentially connected one；Described directly-camber water conservancy diversion
Plate includes a most tangentially connected straight section and a short arc section.
6. SCR denitration system flue gas duct uniforming device as claimed in claim 5, it is characterised in that described long arc shape section
Corresponding center of circle angle is between 10 ° ~ 90 °, and radius is between 500mm ~ 3000mm, and the length of front straight section and rear straight section is not
More than 1000mm.
7. SCR denitration system flue gas duct uniforming device as claimed in claim 5, it is characterised in that described short arc section
Corresponding center of circle angle is between 10 ° ~ 90 °, and radius is between 500mm ~ 1500mm, and described straight section length is less than
500mm。
8. SCR denitration system flue gas duct uniforming device as claimed in claim 1, it is characterised in that described directly-camber leads
Stream plate be arranged in three described directly-lower section of arc-straight type deflector.
9. SCR denitration system flue gas duct uniforming device as claimed in claim 1, it is characterised in that adjacent two panels is straight-
Between arc-straight type deflector and bottom straight-arc-straight type deflector with described directly-camber deflector between vertical
Direction minimum spacing is not less than 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620715781.7U CN205850592U (en) | 2016-07-07 | 2016-07-07 | A kind of SCR denitration system flue gas duct uniforming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620715781.7U CN205850592U (en) | 2016-07-07 | 2016-07-07 | A kind of SCR denitration system flue gas duct uniforming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205850592U true CN205850592U (en) | 2017-01-04 |
Family
ID=57645923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620715781.7U Active CN205850592U (en) | 2016-07-07 | 2016-07-07 | A kind of SCR denitration system flue gas duct uniforming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205850592U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039991A (en) * | 2016-07-07 | 2016-10-26 | 大唐环境产业集团股份有限公司 | Method and apparatus for homogenizing SCR (selective catalytic reduction) denitration system flue flow field |
| JP2018143949A (en) * | 2017-03-03 | 2018-09-20 | 三菱日立パワーシステムズ株式会社 | Exhaust gas treatment equipment |
| CN108636102A (en) * | 2018-04-28 | 2018-10-12 | 南京新瓦特智控科技有限公司 | A kind of online dynamic of denitration velocity field is adjustable commutation system and method |
| CN109990372A (en) * | 2019-04-17 | 2019-07-09 | 浙江禾子施能科技有限公司 | A kind of graphene electric heater |
| CN112178667A (en) * | 2020-10-16 | 2021-01-05 | 南京博沃科技发展有限公司 | Ash field treatment structure for SCR outlet downstream heating surface |
-
2016
- 2016-07-07 CN CN201620715781.7U patent/CN205850592U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039991A (en) * | 2016-07-07 | 2016-10-26 | 大唐环境产业集团股份有限公司 | Method and apparatus for homogenizing SCR (selective catalytic reduction) denitration system flue flow field |
| CN106039991B (en) * | 2016-07-07 | 2019-09-03 | 大唐环境产业集团股份有限公司 | A kind of SCR denitration system flue gas duct homogenization method and device |
| JP2018143949A (en) * | 2017-03-03 | 2018-09-20 | 三菱日立パワーシステムズ株式会社 | Exhaust gas treatment equipment |
| CN108636102A (en) * | 2018-04-28 | 2018-10-12 | 南京新瓦特智控科技有限公司 | A kind of online dynamic of denitration velocity field is adjustable commutation system and method |
| CN109990372A (en) * | 2019-04-17 | 2019-07-09 | 浙江禾子施能科技有限公司 | A kind of graphene electric heater |
| CN112178667A (en) * | 2020-10-16 | 2021-01-05 | 南京博沃科技发展有限公司 | Ash field treatment structure for SCR outlet downstream heating surface |
| CN112178667B (en) * | 2020-10-16 | 2022-03-22 | 南京博沃科技发展有限公司 | Ash field treatment structure for SCR outlet downstream heating surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205850592U (en) | A kind of SCR denitration system flue gas duct uniforming device | |
| CN106039991B (en) | A kind of SCR denitration system flue gas duct homogenization method and device | |
| CN205598967U (en) | A static mixer for selective catalytic reduction system | |
| CN204034564U (en) | The equal mixing device of a kind of gas | |
| CN108636102A (en) | A kind of online dynamic of denitration velocity field is adjustable commutation system and method | |
| US10507427B2 (en) | Flue ozone distributor applied in low-temperature oxidation denitrification technology and arrangement manner thereof | |
| CN204511599U (en) | Mixing tube and exhaust gas treatment device thereof | |
| CN202860406U (en) | SCR flue gas denitrating device for glass kiln | |
| CN103768938A (en) | Ammonia-flue gas uniformly mixing device | |
| CN102389727A (en) | SCR (Selective Catalytic Reduction) denitration four-corner tangent circle type ammonia-fume gas uniformly-mixing device | |
| CN101987280A (en) | SCR (silicon controlled rectifier) denitration reactor of coal fuel gas | |
| CN109045967B (en) | Ammonia spraying and mixing integrated AIG for waste heat boiler of gas unit | |
| CN101766950A (en) | Flue gas flow equalizing and guiding assembly of selective catalyctic reduction (SCR) denitration reactor inlet | |
| CN101306325A (en) | Flue gas even distribution device of selective catalytic reduction reaction denitration reactor | |
| CN105465109B (en) | A kind of device of swirl vane and flue gas gametic fertility | |
| CN204511594U (en) | Mixing tube and exhaust gas treatment device thereof | |
| CN206746285U (en) | A kind of new ammonia-spraying grid for SCR denitration system | |
| CN203577639U (en) | Swirl mixing device for SCR (selective catalytic reduction) flue gas denitrification system | |
| CN207371352U (en) | SCR denitration ammoniates and even flow field structure | |
| CN107126835A (en) | A kind of SCR denitration ammonification and even flow field structure and its operation method | |
| CN217139893U (en) | SCR denitration subregion system | |
| CN103933859B (en) | A kind of SCR denitration system for acrylonitrile installation vent gas treatment | |
| CN104096477B (en) | A kind of static mixer for selective catalytic reduction flue gas denitration system | |
| CN114950125B (en) | Denitration flue gas heating and flow equalizing system of sintering machine | |
| CN101905120A (en) | Ammonia spray nozzle mixer for SCR denitrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |