CN107559078A - Tail-gas after treatment apparatus - Google Patents
Tail-gas after treatment apparatus Download PDFInfo
- Publication number
- CN107559078A CN107559078A CN201710912055.3A CN201710912055A CN107559078A CN 107559078 A CN107559078 A CN 107559078A CN 201710912055 A CN201710912055 A CN 201710912055A CN 107559078 A CN107559078 A CN 107559078A
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- Prior art keywords
- mixing tube
- plate
- tail
- gas
- treatment apparatus
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- Exhaust Gas After Treatment (AREA)
Abstract
A kind of tail-gas after treatment apparatus, it includes mixer assembly, and the mixer assembly includes housing, the mixing tube in the housing and the peripheral dividing plate for being fixed on the mixing tube.The housing is separated into the first space and second space by the dividing plate.The mixing tube includes the first pipe portion in first space and the second pipe portion in the second space, wherein first pipe portion is provided with respectively positioned at least two first openings of its both sides.The mixer assembly also includes blocking the first shield and the second shield in first open front respectively so that the exhaust stream of the overwhelming majority needs to get around first, second shield and can just entered in first opening.The mixer assembly also includes at least two perforated panels that interior positioned at the mixing tube and along the mixing tube axis is staggered.It is arranged such, enhances the broken of urea granules, also strengthen heat exchange.
Description
Technical field
The present invention relates to a kind of tail-gas after treatment apparatus, belongs to motor exhaust post-processing technology field.
Background technology
Research shows ammonia distribution in exhaust gas aftertreatment system (such as selective catalytic reduction system operating, SCR system) pipeline
Uniformity coefficient has important influence to the overall performance and endurance quality of system.If ammonia skewness can cause regional area
Ammonia causes oxynitrides (NOx) transformation efficiency too low excessively so as to easily cause NH_3 leakage in other ammonia thin areas.It is long
The uneven distribution of time ammonia can cause catalyst aging uneven, so as to influence the overall performance of catalyst.Urea droplets
Uneven distribution can cause local tube wall or mixed structure temperature too low, form crystallization, offgas duct can be blocked when serious, causes to send out
Motivation power performance declines.
The content of the invention
It is an object of the invention to provide a kind of preferable tail-gas after treatment apparatus of mixed effect.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of tail-gas after treatment apparatus, after it includes first
Handle carrier module, the second post processing carrier module and positioned at the described first post processing carrier module and the described second post processing
Mixer assembly between carrier module, wherein the mixer assembly include housing, the mixing tube in the housing with
And the peripheral dividing plate of the mixing tube is fixed on, the housing is separated into and the described first post processing vehicle group by the dividing plate
The first space that part is connected and the second space being connected with the described second post processing carrier module, the dividing plate include position
The first plate in the side of the mixing tube, positioned at the mixing tube opposite side the second plate and connection described first
3rd plate of plate and second plate, the 3rd plate are provided with the through hole passed through for the mixing tube；The mixing
Pipe includes the first pipe portion in first space and the second pipe portion in the second space, wherein described the
One pipe portion is provided with respectively positioned at least two first openings of its both sides；The mixer assembly also includes blocking respectively described
The first shield and the second shield of the front end of first opening so that most exhaust streams needs to get around described first, the
Two shields can be just entered in first opening；The mixer assembly also includes mixing in the mixing tube and along described
Close at least two perforated panels that the axis of pipe is staggered.
As further improved technical scheme of the present invention, the first post processing carrier module, second post processing
Carrier module and mixer assembly arrangement are point-blank.
As further improved technical scheme of the present invention, the housing is provided with first axle, and the mixing tube is provided with the
Two axis, the first axle is perpendicular to the second axis.
As further improved technical scheme of the present invention, the mixing tube is arranged vertically；First plate with it is described
Second plate extends vertically and bearing of trend is on the contrary, the 3rd plate is horizontal-extending.
As further improved technical scheme of the present invention, the dividing plate is substantially Z-shape, and first plate is positioned at described
The lower left of mixing tube, second plate are located at the upper right side of the mixing tube.
As further improved technical scheme of the present invention, first plate is provided with and abutted in second pipe portion
Arcwall face.
As further improved technical scheme of the present invention, first shield and second shield are provided separately and
It is welded in first pipe portion.
As further improved technical scheme of the present invention, the tail-gas after treatment apparatus is included positioned at the mixing tube
The plate of bottom, the plate are provided with the arc-shaped convex protruded out into second pipe portion.
As further improved technical scheme of the present invention, at least two perforated panel includes the first perforated panel, second
Perforated panel and two the 3rd perforated panels, wherein the two the 3rd perforated panel flush arrangements, first perforated panel, the second perforate
Plate and the two the axis interlaced arrangements of the 3rd perforated panel along the mixing tube.
As further improved technical scheme of the present invention, first perforated panel is provided with and is fixed in the mixing tube
First fixed claw, second perforated panel are provided with the second fixed claw being fixed in the mixing tube, each the 3rd perforated panel
Provided with the 3rd fixed claw being fixed in the mixing tube.
Compared to prior art, the present invention improves the equal of air flow method by setting first, second shield to carry out rectification
Even property, improves mixed effect.In addition, by setting at least two perforated panels being staggered along the axis of mixing tube, enhancing
Urea granules it is broken, also strengthen heat exchange, reduce the risk of urea crystals.
Brief description of the drawings
Fig. 1 is the schematic perspective view of tail-gas after treatment apparatus of the present invention.
Fig. 2 is Fig. 1 part isometric exploded view.
Fig. 3 is the part isometric exploded view of mixer assembly in Fig. 1.
Fig. 4 is the further three-dimensional exploded views of Fig. 3.
Fig. 5 is the front view of mixer assembly in Fig. 2.
Fig. 6 is the left view of mixer assembly in Fig. 2.
Fig. 7 is the right view of mixer assembly in Fig. 2.
Fig. 8 is the top view of mixer assembly in Fig. 2.
Fig. 9 is the diagrammatic cross-section of the line A-A along Fig. 8.
Figure 10 is the diagrammatic cross-section of the line B-B along Fig. 8.
Embodiment
It please join shown in Fig. 1 to Figure 10, present invention is disclosed a kind of tail-gas after treatment apparatus 100, to handle engine
Exhaust.The tail-gas after treatment apparatus 100 includes the first post processing carrier module 1, second and post-processes carrier module 2 and be located at
Mixer assembly 3 between the first post processing carrier module 1 and the second post processing carrier module 2.Scheme in the present invention
In the embodiment shown, the first post processing carrier module 1, the second post processing carrier module 2 and the blender
Component 3 is arranged point-blank.The first post processing carrier module 1 includes oxidation catalyzer (DOC) 11 and positioned at institute
State the diesel particulate filter (DPF) 12 in the downstream of oxidation catalyzer 11.The second post processing carrier module 2 includes selectivity and urged
Change reducing agent (SCR) 21.Above-mentioned oxidation catalyzer 11, diesel particulate filter 12 and selective catalytic reducing agent 21 pass through card
Hoop progress is detachably connected, in order to repair and change.
The mixer assembly 3 includes housing 31, the mixing tube 32 in the housing 31, is fixed on the mixing tube
32 peripheral dividing plate 33 and the plate 34 positioned at the bottom of mixing tube 32.It please join shown in Fig. 9, the dividing plate 33 is by described in
Housing 31 is separated into the first space 331 being connected with the described first post processing carrier module 1 and post-processed with described second
The second space 332 that carrier module 2 is connected.
The mixing tube 32 includes the first pipe portion 321 being located in first space 331 and positioned at the described second sky
Between the second pipe portion 322 in 332, wherein first pipe portion 321 is provided with respectively positioned at least two first openings of its both sides
3211, enter to supply stream to form the mixed effect of eddy flow.
The mixer assembly 3 also include block respectively described first opening 3211 front ends the first shield 381 and
Second shield 382 so that most exhaust streams, which needs to get around first, second shield 381,382, can just enter institute
State in the first opening 3211.It is arranged such, avoids exhaust stream and reflect directly into being formed in mixing tube 32 and on tube wall, shadow
Ring the uniformity and stationarity of air-flow mixing.In illustrative embodiments of the present invention, first shield 381 and described second
Shield 382 is provided separately and is welded in first pipe portion 321.
It please join shown in Fig. 3, in illustrative embodiments of the present invention, the housing 31 is cylindrical, and it is provided with first axle
Line 311；The mixing tube 32 is cylindrical, and it is provided with second axis 323, the first axle 311 and the second axis 323
Intersect.Preferably, the first axle 311 is perpendicular to the second axis 323.Certainly, in other embodiments, the shell
Body 31 and the mixing tube 32 can also be other shapes, such as ellipse etc..
The dividing plate 33 includes the first plate 331 positioned at the side of the mixing tube 32, positioned at the mixing tube 32
Second plate 332 of opposite side and the 3rd plate 333 of connection first plate 331 and second plate 332, it is described
3rd plate 333 is provided with the through hole 334 passed through for the mixing tube 32.In illustrative embodiments of the present invention, the mixing
Pipe 32 is arranged vertically；First plate 331 and second plate 332 vertically extension and bearing of trend on the contrary, described the
Three plates 333 are horizontal-extending.It please join shown in Fig. 3 and Fig. 4, the dividing plate 33 is substantially Z-shape, and first plate 331 is located at institute
The lower left of mixing tube 32 is stated, second plate 332 is located at the upper right side of the mixing tube 32.First plate 331 is set
There is the arcwall face 335 abutted in second pipe portion 322.
The plate 34 is located at the lower end of second pipe portion 322, and the plate 34 is provided with convex to second pipe portion 322
The arc-shaped convex 341 stretched, to guide flow reversal, forms out cyclonic current.The plate 34 can avoid urea liquid
It is directly injected on blast pipe, so as to reduce the risk of urea crystals.
The tail-gas after treatment apparatus 100 is provided with the housing 31 and to install urea nozzle will be atomized it
The nozzle mounting seat 310 that urea liquid afterwards is sprayed into the mixing tube 32.
In illustrative embodiments of the present invention, first perforated panel 35 is provided with some first perforates 351 and fixed
The first fixed claw 352 in the mixing tube 32.Second perforated panel 36 is provided with some second perforates 361 and is fixed on
The second fixed claw 362 in the mixing tube 32.Described two flush arrangements of 3rd perforated panel 37, each the 3rd perforated panel 37
Provided with some 3rd perforates 371 and the 3rd fixed claw 372 being fixed in the mixing tube 32.
By setting first perforated panel 35, the second perforated panel 36 and the 3rd perforated panel 37, urea granules are enhanced
It is broken, improve the effect of mixing；In addition, also strengthening heat exchange, reduce and form the wind of crystallization because local temperature is too low
Danger.If the perforated panel of single piece type, in order to realize that preferable urea crushes, it needs to set the less perforate in aperture, so
Necessarily cause back pressure higher；But if in order to reduce back pressure, aperture will certainly be expanded, can not so be realized again good to urea
It is broken.The present invention is by the way that the first perforated panel 35, the second perforated panel 36 and the 3rd perforated panel 37 are staggered, between them
The region that air-flow passes through is also form, so as to reduce back pressure, while does not influence to crush urea granules again, achieves expectation
Less than technique effect.
In illustrative embodiments of the present invention, when the exhaust of engine enters through the first post processing carrier module 1
When in the first space 331, exhaust enters mixing tube 32 around first, second shield 381,382 from the first opening 3211.Work as satisfaction
During injection conditions, urea nozzle sprays urea into mixing tube 32, and the urea droplets of atomization and the exhaust of engine are mixed together
And downward downstream, and reach the second post processing carrier module 2 positioned at downstream.Preferably make air-flow in the presence of plate 34
Reversely (such as upstream) flow to form double-cyclone.Be arranged such, by eddy flow add Urea Evaporation away from discrete time,
The uniformity of air-flow mixing is improved, reduces the risk of urea crystals.
In addition, above example is merely to illustrate the present invention and not limits technical scheme described in the invention, to this
The understanding of specification should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments pair
Present invention has been detailed description, still, it will be understood by those within the art that, the technology of art
Still the present invention can be modified by personnel or equivalent substitution, and all do not depart from the technology of the spirit and scope of the present invention
Scheme and its improvement, it all should cover in scope of the presently claimed invention.
Claims (10)
1. a kind of tail-gas after treatment apparatus, it includes the first post processing carrier module, the second post processing carrier module and is located at
Mixer assembly between the first post processing carrier module and the second post processing carrier module, wherein the blender
Component includes housing, the mixing tube in the housing and the peripheral dividing plate for being fixed on the mixing tube, the dividing plate
The housing is separated into the first space being connected with the described first post processing carrier module and post-processed with described second
The second space that carrier module is connected, the dividing plate include the first plate positioned at the side of the mixing tube, positioned at described
Second plate of the opposite side of mixing tube and the 3rd plate of connection first plate and second plate, the described 3rd
Plate is provided with the through hole passed through for the mixing tube；The mixing tube include the first pipe portion in first space and
The second pipe portion in the second space, wherein first pipe portion is provided with is located at least two first of its both sides respectively
Opening；It is characterized in that：The mixer assembly also include block respectively described first opening front end the first shield with
And second shield so that most exhaust streams, which needs to get around first, second shield, can just enter described first and open
In mouthful；The mixer assembly also includes at least two that interior positioned at the mixing tube and along the mixing tube axis is staggered
Individual perforated panel.
2. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The first post processing carrier module, described
Second post processing carrier module and mixer assembly arrangement are point-blank.
3. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The housing is provided with first axle, described mixed
Close pipe and be provided with second axis, the first axle is perpendicular to the second axis.
4. tail-gas after treatment apparatus as claimed in claim 3, it is characterised in that：The mixing tube is arranged vertically；Described first
Plate extends vertically with second plate and bearing of trend is on the contrary, the 3rd plate is horizontal-extending.
5. tail-gas after treatment apparatus as claimed in claim 4, it is characterised in that：The dividing plate is substantially Z-shape, first plate
Piece is located at the lower left of the mixing tube, and second plate is located at the upper right side of the mixing tube.
6. tail-gas after treatment apparatus as claimed in claim 5, it is characterised in that：First plate, which is provided with, abuts in described the
Arcwall face in two pipe portions.
7. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：First shield and second shield point
Open up and put and be welded in first pipe portion.
8. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The tail-gas after treatment apparatus includes being located at institute
The plate of the bottom of mixing tube is stated, the plate is provided with the arc-shaped convex protruded out into second pipe portion.
9. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：At least two perforated panel is opened including first
Orifice plate, the second perforated panel and two the 3rd perforated panels, wherein the two the 3rd perforated panel flush arrangements, first perforate
Plate, the second perforated panel and the two the axis interlaced arrangements of the 3rd perforated panel along the mixing tube.
10. tail-gas after treatment apparatus as claimed in claim 9, it is characterised in that：First perforated panel is provided with and is fixed on institute
The first fixed claw in mixing tube is stated, second perforated panel is provided with the second fixed claw being fixed in the mixing tube, each
Individual 3rd perforated panel is provided with the 3rd fixed claw being fixed in the mixing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710912055.3A CN107559078A (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710912055.3A CN107559078A (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107559078A true CN107559078A (en) | 2018-01-09 |
Family
ID=60984861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710912055.3A Pending CN107559078A (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107559078A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056823A1 (en) * | 2017-09-19 | 2019-03-28 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment mixing device |
| WO2019140865A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Exhaust gas aftertreatment device |
| US10967329B2 (en) | 2019-02-26 | 2021-04-06 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system having a swirl-back mixer |
| WO2021223360A1 (en) * | 2020-05-07 | 2021-11-11 | 天纳克（苏州）排放系统有限公司 | Tail gas aftertreatment mixing device and tail gas aftertreatment device |
| CN114432946A (en) * | 2022-02-09 | 2022-05-06 | 无锡威孚力达催化净化器有限责任公司 | Double-outlet rotational flow gas-liquid mixing device |
-
2017
- 2017-09-29 CN CN201710912055.3A patent/CN107559078A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056823A1 (en) * | 2017-09-19 | 2019-03-28 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment mixing device |
| US11208933B2 (en) | 2017-09-19 | 2021-12-28 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas after-treatment mixing device |
| US11486290B2 (en) | 2017-09-19 | 2022-11-01 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas after-treatment mixing device |
| WO2019140865A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Exhaust gas aftertreatment device |
| US10967329B2 (en) | 2019-02-26 | 2021-04-06 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system having a swirl-back mixer |
| WO2021223360A1 (en) * | 2020-05-07 | 2021-11-11 | 天纳克（苏州）排放系统有限公司 | Tail gas aftertreatment mixing device and tail gas aftertreatment device |
| CN114432946A (en) * | 2022-02-09 | 2022-05-06 | 无锡威孚力达催化净化器有限责任公司 | Double-outlet rotational flow gas-liquid mixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180109 |
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| WD01 | Invention patent application deemed withdrawn after publication |