CN205659562U - Drainage and fairing suitable for SCR flue gas denitration system - Google Patents
Drainage and fairing suitable for SCR flue gas denitration system Download PDFInfo
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- CN205659562U CN205659562U CN201620452435.4U CN201620452435U CN205659562U CN 205659562 U CN205659562 U CN 205659562U CN 201620452435 U CN201620452435 U CN 201620452435U CN 205659562 U CN205659562 U CN 205659562U
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- bend
- flue gas
- drainage plate
- flue
- arc
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Abstract
The utility model discloses a be applicable to the drainage and the fairing of SCR flue gas denitration system, include: the flue is including the bend, the drainage plate sets up the bend department at the flue for flue gas to leading to the turn the corner way carries out the drainage, and the rectification grid, set up in the flue for make the flue gas pass through the flue uniformly. When the bend was the arc bend, corresponding drainage plate was the arc drainage plate, and the crooked direction and the radian of arc drainage plate are unanimous basically with the crooked direction and the radian of arc bend, when the bend was the ramp type bend, corresponding drainage plate was plate drainage plate, and plate drainage plate is unanimous basically with the incline direction of ramp type bend. The utility model discloses a drainage plate that is applicable to drainage and the fairing of SCR flue gas denitration system can carry out the drainage to leading to the flue gas that turn the corner said, avoids the flue gas because the lateral wall of inertia direct impact flue, and in addition, the rectification grid in the flue has effectively improved the equipartition nature of flue gas, makes each the component misce bene in the flue gas.
Description
Technical field
This utility model relates to the structure-design technique field of flue gas processing device, and espespecially one is applicable to SCR flue gas and takes off
The drain of nitre system and fairing.
Background technology
Nitrogen oxides (NOX) it is one of primary pollution source causing atmospheric pollution, its discharge can be to natural environment and people
Class activity brings serious harm, including the infringement to plant, the toxicity processed to people, formed acid rain or acid mist, damage the ozone layer,
Photochemical fog etc. is formed with Hydrocarbon.
Along with industrial expansion in recent years, the discharge capacity of whole world nitrogen oxides increases, year by year as a example by China, if not taking
Further emission control measure, to the year two thousand twenty and the year two thousand thirty, China NOXTotal emission volumn will respectively reach 29,000,000 tons and 4000
Ten thousand tons.Therefore NOXImprovement become the emphasis of China's next stage pollution emission reduction." the 12 " planning passed through at the beginning of 2011
Outline, requires NO firstXDischarge capacity reduces 10%, and this lists in the binding indicator system.
Technology is by reducing agent (usually for SCR (Selective Catalytic Reduction, selective oxidation reduces)
NH3) under the ambient temperatures of 320～420 DEG C and special catalyst (being mainly composed of titanium oxide, vanadic anhydride) act on, choosing
Selecting property and NOXThere is reduction reaction, generate the N of environmental sound2And H2O, to reach to remove NOXPurpose.From the point of view of at present,
SCR denitration technology there are still ammonia and flue gas mixability is relatively low, NOXThe shortcomings such as removal efficiency is the best.
Therefore, the applicant is devoted to provide a kind of flue gas water conservancy diversion and fairing.
Utility model content
The purpose of this utility model is to provide a kind of flue gas water conservancy diversion and fairing, and its structure is arranged simple, can effectively be carried
The mixability of each component in the uniform property of high flue gas and flue gas.
For solving above-mentioned technical problem, this utility model provide a kind of drain being applicable to SCR flue gas denitrification system and
Fairing, including: flue, including at least one bend；At least one drainage plate, is arranged on the corner of described flue, uses
In carrying out drain to by the flue gas of described bend；And at least one flow straightening grid, it is arranged in described flue, is used for making cigarette
Gas is uniformly across described flue.
Preferably, described bend is arc bend, and described drainage plate is arc drainage plate, described arc drainage plate curved
Qu Fangxiang is basically identical with the bending direction of described arc bend, the radian of described arc drainage plate and the arc of described arc bend
Spend basically identical.
Preferably, described arc bend is near the smoke inlet of described flue.
Preferably, described bend is ramp type bend, and described drainage plate is plate drainage plate, and described plate draws
The incline direction of stream plate is basically identical with the incline direction of described ramp type bend.
Preferably, described ramp type bend is near the exhanst gas outlet of described flue.
Preferably, described flue includes two bends, and wherein the bend near smoke inlet is arc bend, described arc
The cross section of bend is circular, and the drainage plate being arranged on described arc corner is arc drainage plate, described arc drainage plate
Bending direction is basically identical with the bending direction of described arc bend, the radian of described arc drainage plate and described arc bend
Radian is basically identical.
Bend near exhanst gas outlet is ramp type bend, and the cross section of described ramp type bend is rectangle, is arranged on institute
The drainage plate stating ramp type corner is plate drainage plate, and the incline direction of described plate drainage plate and described ramp type
The incline direction of bend is basically identical.
Preferably, the corner of described flue is provided with multiple drainage plate be arrangeding in parallel, between adjacent described drainage plate
It is formed with the flue gas flow channel passed through for flue gas.
Preferably, connect by least one connecting rod is fixing between the multiple described drainage plate of each described corner.
Preferably, described flow straightening grid includes the first grid of multiple equi-spaced apart and the second lattice of multiple equi-spaced apart
The spacing being smaller than between described second grid between grid, and described first grid, described first grid and described second
The multiple through hole passed through for flue gas of grid formation arranged in a crossed manner.
Preferably, the bend of described flue and the number of described flow straightening grid are multiple；The described flow straightening grid of part sets
Putting in the flue between multiple described bends, remaining described flow straightening grid is arranged on the smoke outlet of described flue.
The drain of the SCR of being applicable to flue gas denitrification system of the present utility model and fairing can realize following at least one
Beneficial effect:
1, the drain being applicable to SCR flue gas denitrification system of the present utility model and fairing are by the corner at flue
Drainage plate is set, thus carries out drain to by the flue gas of bend, it is to avoid flue gas directly impacts the sidewall of flue due to inertia, separately
Outward, the uniform property of flue gas it is effectively increased by the flow straightening grid in flue, it is also possible to make each component mix homogeneously in flue gas.
2, the drain be applicable to SCR flue gas denitrification system of the present utility model and fairing make bend and drainage plate
Shape keeps consistent, i.e. arranges arc drainage plate in arc corner, arranges plate drainage plate in ramp type corner, quite
In being the bend that multiple bore is less by drainage plate by bend cutting, thus promote the drainage plate drainage effect to flue gas.
3, the drain being applicable to SCR flue gas denitrification system of the present utility model and fairing are put down multiple by connecting rod
The drainage plate that row is arranged is fixed, thus effectively maintain the stability of drainage plate structure, it is to avoid due to the impact of flue gas
Cause drainage plate position unstable.
4, the flow straightening grid the drain be applicable to SCR flue gas denitrification system of the present utility model and fairing is by the
One grid and the second grid are formed and are used for the through hole that flue gas passes through, and its simple in construction is easy for installation, it is also possible to by arranging difference
Through-hole diameter reach to intercept the effect of the bulky grain ash in flue gas.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the drain of the SCR of being applicable to flue gas denitrification system of the present utility model and the one of fairing is embodied as
The structural representation of example；
Fig. 2 is the concrete structure schematic diagram of the flow straightening grid shown in Fig. 1.
Drawing reference numeral illustrates:
Flue 10, arc bend 11, ramp type bend 12；Arc drainage plate 21, flat drainage plate 22；Flow straightening grid
30, the first grid 31, the second grid 32, through hole 33；Flue gas circulating direction A；SCR device B.
Detailed description of the invention
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
As it is shown in figure 1, this specific embodiment discloses a kind of drain being applicable to SCR flue gas denitrification system and rectification dress
Put, including: flue 10, including two bends, arc bend 11 and ramp type bend 12, arc bend enters near the flue gas of flue
Mouthful, its cross section is circular, and ramp type bend is near the exhanst gas outlet of flue, and its cross section is rectangle；Multiple drainage plates 21, if
Put the corner at flue 10, for carrying out drain to by the flue gas of bend；And a flow straightening grid 30, it is arranged on flue
In the smoke outlet of 10, it is used for making flue gas flow out flue 10 equably.
The drainage plate arranged at arc bend 11 is arc drainage plate 21, the bending direction of arc drainage plate 21 and curved bend
The bending direction in road 11 is basically identical, and the radian of arc drainage plate 21 is basically identical with the radian of arc bend 11, basically identical
Refer to unanimously or slightly deviation.
The drainage plate arranged at ramp type bend 12 is plate drainage plate 22, and the incline direction of plate drainage plate 22
Basically identical with the incline direction of ramp type bend 12, basically identical refer to unanimously or slightly deviation.Ramp type bend 12
Flue bore can be changed, thus realize assembling the effect of flue gas.
Concrete, it is equipped with multiple drainage plate be arrangeding in parallel at the arc bend 11 of flue 10 and ramp type bend 12,
The flue gas flow channel passed through for flue gas it is formed with between adjacent drainage plate.
Concrete, connect by multiple connecting rods (not marking in figure) are fixing between multiple drainage plates of each corner.
Concrete, as in figure 2 it is shown, flow straightening grid 30 includes the first grid 31 of multiple equi-spaced apart and multiple equi-spaced apart
The second grid 32, and the spacing being smaller than between the second grid 32 between the first grid 31, the first grid 31 and second
The multiple through hole 33 passed through for flue gas of grid 32 formation arranged in a crossed manner.
Of course, in other specific embodiments, multiple drainage plates in flue gas water conservancy diversion of the present utility model and fairing
Between connecting rod can arrange with selectivity；Flue between multiple bends can also arrange flow straightening grid；Flow straightening grid
Through hole can be rectangle, square or circular etc.；The angle of inclination of drainage plate and concrete mounting arrangements mode are by CFD
(Computational Fluid Dynamics, computational fluid dynamics software) flow field simulation result is adjusted；Bend, draw
Stream plate and the concrete structure of flow straightening grid and number all can be adjusted according to actual needs, and here is omitted.
Exemplary, as it is shown in figure 1, the concrete of the specific embodiment of flue gas water conservancy diversion of the present utility model and fairing should
As follows by situation:
Flue gas enters flue 10, at the arc bend 11 of flue 10, multiple arc drainage plates along flue gas circulating direction A
21 pairs of flue gases carry out water conservancy diversion, and at the ramp type bend 12 of flue 10, multiple plate drainage plates 22 carry out drain to flue gas, from
And effectively prevent flue gas and directly impact walling of flue due to inertia, and each component in flue gas can be made to be sufficiently mixed, last cigarette
Gas is through being positioned at the flow straightening grid 30 in flue 10 exit, and under the effect of flow straightening grid 30, flue gas fills evenly into SCR
Put in B, and the bulky grain ash in flue gas is effectively intercepted at flow straightening grid 30.
Flue gas even distribution after being processed by flue gas water conservancy diversion of the present utility model and fairing is good, and each component in flue gas
Mixability high, dust content is low, can be effectively improved the SCR device denitration efficiency to flue gas in subsequent processes, also
Can be prevented effectively from that dust content in flue gas is higher causes catalyst in SCR device to lose activity.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (9)
1. the drain being applicable to SCR flue gas denitrification system and fairing, it is characterised in that including:
Flue, including at least one bend；
At least one drainage plate, is arranged on the corner of described flue, for carrying out drain to by the flue gas of described bend；With
And
At least one flow straightening grid, is arranged in described flue, is used for making flue gas uniformly across described flue；
Described bend is arc bend, and described drainage plate is arc drainage plate, the bending direction of described arc drainage plate and institute
The bending direction stating arc bend is basically identical, the radian of described arc drainage plate and the radian basic of described arc bend
Cause.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 1, it is characterised in that:
Described arc bend is near the smoke inlet of described flue.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 1, it is characterised in that:
Described bend is ramp type bend, and described drainage plate is plate drainage plate, and the inclination of described plate drainage plate
Direction is basically identical with the incline direction of described ramp type bend.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 3, it is characterised in that:
Described ramp type bend is near the exhanst gas outlet of described flue.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 1, it is characterised in that:
Described flue includes two bends, and wherein the bend near smoke inlet is arc bend, described arc bend transversal
Face is circular, and the drainage plate being arranged on described arc corner is arc drainage plate, the bending direction of described arc drainage plate with
The bending direction of described arc bend is basically identical, and the radian of described arc drainage plate is basic with the radian of described arc bend
Unanimously；
Being ramp type bend near the bend of exhanst gas outlet, the cross section of described ramp type bend is rectangle, be arranged on described tiltedly
The drainage plate of slope formula corner is plate drainage plate, and the incline direction of described plate drainage plate and described ramp type bend
Incline direction basically identical.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 1, it is characterised in that:
The corner of described flue is provided with multiple drainage plate be arrangeding in parallel, is formed for cigarette between adjacent described drainage plate
The flue gas flow channel that gas passes through.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 6, it is characterised in that:
Connect by least one connecting rod is fixing between the multiple described drainage plate of each described corner.
It is applicable to drain and the fairing of SCR flue gas denitrification system the most as claimed in claim 1, it is characterised in that:
Described flow straightening grid includes the first grid of multiple equi-spaced apart and the second grid of multiple equi-spaced apart,
And the spacing being smaller than between described second grid between described first grid, described first grid and described second
The multiple through hole passed through for flue gas of grid formation arranged in a crossed manner.
9. the drain being applicable to SCR flue gas denitrification system as according to any one of claim 1 to 8 and fairing, it is special
Levy and be:
The bend of described flue and the number of described flow straightening grid are multiple；
The described flow straightening grid of part is arranged in the flue between multiple described bend, and remaining described flow straightening grid is arranged on described
The smoke outlet of flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620452435.4U CN205659562U (en) | 2016-05-18 | 2016-05-18 | Drainage and fairing suitable for SCR flue gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620452435.4U CN205659562U (en) | 2016-05-18 | 2016-05-18 | Drainage and fairing suitable for SCR flue gas denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205659562U true CN205659562U (en) | 2016-10-26 |
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ID=57161567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620452435.4U Active CN205659562U (en) | 2016-05-18 | 2016-05-18 | Drainage and fairing suitable for SCR flue gas denitration system |
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| CN (1) | CN205659562U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731449A (en) * | 2016-11-23 | 2017-05-31 | 中国科学院过程工程研究所 | A kind of column for smoke purification |
| WO2018094588A1 (en) * | 2016-11-23 | 2018-05-31 | 中国科学院过程工程研究所 | Flue gas purification tower |
| 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 |
-
2016
- 2016-05-18 CN CN201620452435.4U patent/CN205659562U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731449A (en) * | 2016-11-23 | 2017-05-31 | 中国科学院过程工程研究所 | A kind of column for smoke purification |
| WO2018094588A1 (en) * | 2016-11-23 | 2018-05-31 | 中国科学院过程工程研究所 | Flue gas purification tower |
| JP2020513317A (en) * | 2016-11-23 | 2020-05-14 | 中国科学院過程工程研究所Ｉｎｓｔｉｔｕｔｅ Ｏｆ Ｐｒｏｃｅｓｓ Ｅｎｇｉｎｅｅｒｉｎｇ，Ｃｈｉｎｅｓｅ Ａｃａｄｅｍｙ Ｏｆ Ｓｃｉｅｎｃｅｓ | Flue gas purification tower |
| US11097218B2 (en) | 2016-11-23 | 2021-08-24 | Institute Of Process Engineering, Chinese Academy Of Sciences | Flue gas purification tower |
| 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 |
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| GR01 | Patent grant |