CN109538337A - Engine exhaust post-processes mixing arrangement - Google Patents
Engine exhaust post-processes mixing arrangement Download PDFInfo
- Publication number
- CN109538337A CN109538337A CN201910023028.XA CN201910023028A CN109538337A CN 109538337 A CN109538337 A CN 109538337A CN 201910023028 A CN201910023028 A CN 201910023028A CN 109538337 A CN109538337 A CN 109538337A
- Authority
- CN
- China
- Prior art keywords
- baffle
- post
- engine exhaust
- fine fibre
- mixing arrangement
- 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.)
- Granted
Links
- 238000002156 mixing Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 19
- 239000000835 fiber Substances 0.000 claims abstract description 39
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004202 carbamide Substances 0.000 claims abstract description 25
- 230000008020 evaporation Effects 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims abstract description 4
- 238000000889 atomisation Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 abstract description 16
- 230000006872 improvement Effects 0.000 description 10
- 210000002268 wool Anatomy 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of engine exhaust post-processing mixing arrangement, it include to the shell of urea nozzle is installed, be mounted on the intracorporal first baffle of the shell and be mounted in the shell and with the spaced second baffle of the first baffle, the shell forms the mixing chamber between the first baffle and the second baffle.The engine exhaust post-processing mixing arrangement further includes the support plate being located in the mixing chamber and the fine fibre element being mounted in the support plate.The mixing chamber includes the first cavity and the second cavity；The first baffle is equipped with the exhaust entrance being connected with first cavity, and the second baffle is equipped with the air exit being connected with second cavity；Urea droplets of the urea nozzle to the jet atomization into the mixing chamber, the fine fibre element for exhaust and the urea droplets to pass through, to further increase the broken and evaporation of the urea droplets.
Description
Technical field
The present invention relates to a kind of engine exhausts to post-process mixing arrangement, belongs to exhaust gas aftertreatment techniques field.
Background technique
It is all currently the mixing for reaching urea droplets and exhaust with mixer metal structure in the industry.In general, in mixer
The structures such as middle setting porous plate, fin allow the mixer of urea droplets and metal structure to collide to keep urea droplets broken
It is broken into smaller drop, to be conducive to evaporate and be pyrolyzed in metal surface.
It is had existed by way of designing Z-shaped partition and being matched with mixing tube in the prior art and arranges the trend of air-flow
And the mixing of urea droplets and exhaust；However, Z-shaped diaphragm structure is complicated, and change is easy to happen under the action of high-temperature exhaust air
Shape.
Therefore, it is necessary to provide the novel solution of one kind to solve above-mentioned technical problem.
Summary of the invention
The purpose of the present invention is to provide a kind of mixed performances compared with the simple engine exhaust post-processing mixing of strong and structure
Device.
To achieve the above object, the present invention adopts the following technical scheme: a kind of engine exhaust post-processes mixing arrangement,
Including to install urea nozzle shell, be mounted on the intracorporal first baffle of the shell and be mounted in the shell and with
The spaced second baffle of first baffle, the shell form positioned at the first baffle and the second baffle it
Between mixing chamber, engine exhaust post-processing mixing arrangement further includes support plate and installation in the mixing chamber
Fine fibre element in the support plate, the mixing chamber include positioned at the fine fibre element one end the first cavity with
And the second cavity of the other end positioned at the fine fibre element；The first baffle, which is equipped with, to be connected with first cavity
Exhaust entrance, the second baffle are equipped with the air exit being connected with second cavity；The urea nozzle is to institute
State the urea droplets of jet atomization in mixing chamber, the fine fibre element to be passed through for exhaust and the urea droplets, with
Further increase the broken and evaporation of the urea droplets.
Technical solution as a further improvement of that present invention, the fine fibre element be steel wool or foam metal or
The porous material of ceramics.
Technical solution as a further improvement of that present invention, first cavity are located at the upper end of the fine fibre element,
Second cavity is located at the lower end of the fine fibre element.
Technical solution as a further improvement of that present invention, the first baffle are set there are two the exhaust entrance and position
Perforation between the two described exhaust entrances.
Technical solution as a further improvement of that present invention, the second baffle are equipped with from rear end and seal first cavity
Retaining wall portion.
Technical solution as a further improvement of that present invention, the second baffle include extending downwardly from the retaining wall portion
Extension, the air exit are two and are located at the two sides of the extension.
Technical solution as a further improvement of that present invention, the extension are inclined to the direction far from the first baffle
From the end of the extension is fixed on the inner wall of the shell.
Technical solution as a further improvement of that present invention, the support plate and the first baffle and the second gear
Plate is fixed together, and the support plate is equipped with the first side wall and second sidewall to the fine fibre component shrinkage.
Technical solution as a further improvement of that present invention, the first side wall and/or the second sidewall have to
Air-flow is oriented to the rake of the fine fibre element.
Technical solution as a further improvement of that present invention, the support plate include connecting the first side wall and described the
The connection wall of two side walls, the connection wall are equipped with the mounting hole for installing the fine fibre element.
Compared to the prior art, the present invention makes urea droplets on the surface of fine fibre element by setting fine fibre element
Occur adequately to be crushed and mix with inside.In addition, by the way that support plate and the fine fibre being mounted in the support plate is first
Part is arranged between first baffle and second baffle, dexterously simplifies structure.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of inventive engine exhaust aftertreatment mixing arrangement.
Fig. 2 is the stereogram exploded view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the right view of Fig. 1.
Fig. 5 is the diagrammatic cross-section of line A-A in Fig. 3.
Specific embodiment
It please join shown in Fig. 1 to Fig. 5, present invention discloses a kind of engine exhausts to post-process mixing arrangement 100, for starting
The tail gas of engine is handled in the encapsulation of machine exhaust aftertreatment.The engine exhaust post-processing encapsulation includes that the first post-processing carries
Body component (not shown), positioned at it is described first post-processing carrier module downstream second post-processing carrier module (not shown) with
And the third positioned at the downstream of the second post-processing carrier module post-processes carrier module (not shown).The engine exhaust
Mixing arrangement 100 is post-processed to be located between the second post-processing carrier module and third post-processing carrier module.It is preferred that
Ground, the first post-processing carrier module are oxidation catalyzer (DOC), and the second post-processing carrier module is diesel particulate trap
(DPF), third post-processing carrier module is selective catalytic reduction device (SCR).
The engine exhaust post-processing mixing arrangement 100 includes shell 1, the first baffle 2 being mounted in the shell 1
And be mounted in the shell 1 and with the spaced second baffle 3 of the first baffle 2.The shell 1 is schemed in the present invention
It is substantially cylindrical in the embodiment shown comprising to install the mounting base 11 of urea nozzle.
It please join shown in Fig. 5, the shell 1 forms the mixing between the first baffle 2 and the second baffle 3
Chamber 10.The engine exhaust post-processing mixing arrangement 100 further includes support plate 4 and installation in the mixing chamber 10
Fine fibre element 5 in the support plate 4.The mixing chamber 10 includes positioned at the first of one end of the fine fibre element 5
Second cavity 102 of cavity 101 and the other end positioned at the fine fibre element 5.In illustrative embodiments of the present invention,
First cavity 101 is located at the upper end of the fine fibre element 5, and second cavity 102 is located at the fine fibre element 5
Lower end.
It please join shown in Fig. 1 and Fig. 3, the first baffle 2 is in the form of annular discs.Preferably, the outer rim welding of the first baffle 2
It is fixed on the inner wall of the shell 1.The first baffle 2 is equipped with the exhaust entrance 21 being connected with first cavity 101.
Preferably, the exhaust entrance 21 is two, and is arranged symmetrically.The first baffle 2 further includes being located at the two described exhausts
Perforation 22 between entrance 21, the perforation 22 can play adjustment effect to back pressure.Quantity as the perforation 22 and big
It is small, it can flexible setting according to actual needs.The perforation 22 further includes positioned at its lower edge and the several of arc-shaped arrangement are led to
Hole 23, the through-hole 23 are connected to second cavity 102, can play the function of adjusting back pressure.
It please join shown in Fig. 1, Fig. 4 and Fig. 5, the second baffle 3 is equipped with the retaining wall that first cavity 101 is sealed from rear end
The air exit in portion 31, the extension 32 extended downwardly from the retaining wall portion 31 and the two sides for being located at the extension 32
33.The outer rim of the second baffle 3 is weldingly fixed on the inner wall of the shell 1, including the end of the extension 32.
In illustrative embodiments of the present invention, the extension 32 deviates to the direction far from the first baffle 2, the extension
32 are equipped with rake 321.
The support plate 4 is fixed together with the first baffle 2 and the second baffle 3.Preferably, described first
Baffle 2 and the second baffle 3 are equipped with welding groove 211,311, the support plate 4 by the welding groove 211,311 with it is described
First baffle 2 and the second baffle 3 are welded and fixed together.The support plate 4, which is equipped with to the fine fibre element 5, shrinks
The first side wall 41, second sidewall 42 and the connection the first side wall 41 and the second sidewall 42 connection wall 43.It is described
The first side wall 41 and/or the second sidewall 42 have the rake 44 air-flow to be oriented to the fine fibre element 5.It is described
Connection wall 43 is equipped with the mounting hole 431 for installing the fine fibre element 5.The present invention is by by support plate 4 and being mounted on described
Fine fibre element 5 in support plate 4 is arranged between first baffle 2 and second baffle 3, structure is dexterously simplified, without setting
Set Z-shaped partition.
The fine fibre element 5 includes the porous material of steel wool or foam metal or ceramics.The present invention is using carefully
It is thin that the 3D porous structure or multiple-void structure of fibre element 5 (such as steel wool), exhaust and the urea droplets pass through this
Fibre element 5 makes urea droplets adequately be crushed and mix on the surface of steel wool and internal generation.In addition, the line of steel wool
Diameter is smaller, and gap is complicated, large specific surface area.It is interior in a limited space to create bigger heat exchange because of large specific surface area
Area, is conducive to urea droplets and exhaust occurs relatively adequately to exchange heat, to be conducive to the evaporation and pyrolysis of urea droplets, improves
Crystallization.The back pressure of system can be correspondingly adjusted by the adjusting of the density to fine fibre element 5.It please join shown in Fig. 2,
In illustrative embodiments of the present invention, the fine fibre element 5 includes the tube body being welded and fixed together by soldering processes
51.The tube body 51 is mounted in the mounting hole 431 and mutually fixes with the inner wall of the mounting hole 431.
In addition, above embodiments are merely to illustrate the present invention and not limit the technical scheme described by the invention, to this
The understanding of specification should be based on person of ordinary skill in the field, although this specification is referring to the above embodiments pair
Present invention has been detailed description, still, those skilled in the art should understand that, the technology of technical field
Personnel still can modify or equivalently replace the present invention, and all do not depart from the technology of the spirit and scope of the present invention
Scheme and its improvement should all be covered in scope of the presently claimed invention.
Claims (10)
1. a kind of engine exhaust post-processes mixing arrangement comprising to install the shell of urea nozzle, be mounted on the shell
Intracorporal first baffle and be mounted in the shell and with the spaced second baffle of the first baffle, the shell
Form the mixing chamber between the first baffle and the second baffle, which is characterized in that after the engine exhaust
The fine fibre element that mixing arrangement further includes the support plate in the mixing chamber and is mounted in the support plate is handled,
The mixing chamber includes positioned at first cavity of one end of the fine fibre element and positioned at the another of the fine fibre element
Second cavity at end；The first baffle is equipped with the exhaust entrance being connected with first cavity, and the second baffle is equipped with
The air exit being connected with second cavity；Urea solution of the urea nozzle to the jet atomization into the mixing chamber
Drop, the fine fibre element for exhaust and the urea droplets to pass through, to further increase the broken of the urea droplets
Broken and evaporation.
2. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the fine fibre element is steel
The porous material of velvet or foam metal or ceramics.
3. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: first cavity is located at institute
The upper end of fine fibre element is stated, second cavity is located at the lower end of the fine fibre element.
4. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the first baffle is equipped with two
A exhaust entrance and the perforation between exhaust entrance described in the two.
5. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the second baffle be equipped with from
Rear end seals the retaining wall portion of first cavity.
6. engine exhaust as claimed in claim 5 post-processes mixing arrangement, it is characterised in that: the second baffle includes certainly
The extension that the retaining wall portion extends downwardly, the air exit are two and are located at the two sides of the extension.
7. engine exhaust as claimed in claim 6 post-processes mixing arrangement, it is characterised in that: the extension is to far from institute
The direction for stating first baffle is deviateed, and the end of the extension is fixed on the inner wall of the shell.
8. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the support plate and described the
One baffle and the second baffle are fixed together, and the support plate is equipped with the first side wall to the fine fibre component shrinkage
And second sidewall.
9. engine exhaust as claimed in claim 8 post-processes mixing arrangement, it is characterised in that: the first side wall and/or
The second sidewall has the rake air-flow to be oriented to the fine fibre element.
10. engine exhaust as claimed in claim 8 post-processes mixing arrangement, it is characterised in that: the support plate includes connecting
The connection wall of the first side wall Yu the second sidewall is connect, the connection wall is equipped with the installation for installing the fine fibre element
Hole.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410946562.9A CN118705034A (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
| CN201910023028.XA CN109538337B (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
| PCT/CN2019/124981 WO2020143391A1 (en) | 2019-01-10 | 2019-12-13 | Engine exhaust aftertreatment mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023028.XA CN109538337B (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410946562.9A Division CN118705034A (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538337A true CN109538337A (en) | 2019-03-29 |
| CN109538337B CN109538337B (en) | 2024-08-16 |
Family
ID=65834823
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410946562.9A Pending CN118705034A (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
| CN201910023028.XA Active CN109538337B (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410946562.9A Pending CN118705034A (en) | 2019-01-10 | 2019-01-10 | Exhaust aftertreatment mixing device for engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN118705034A (en) |
| WO (1) | WO2020143391A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143391A1 (en) * | 2019-01-10 | 2020-07-16 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment mixing device |
| IT202000015346A1 (en) * | 2020-06-25 | 2021-12-25 | Marelli Europe Spa | EXHAUST GAS TREATMENT DEVICE FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
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| US6604356B1 (en) * | 2002-04-19 | 2003-08-12 | Envirolift, Llc | Emission control system for generator engine |
| EP1748162A1 (en) * | 2005-07-28 | 2007-01-31 | Hitachi, Ltd. | Exhaust aftertreatment system using urea water |
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| CN107165704A (en) * | 2017-07-27 | 2017-09-15 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
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- 2019-01-10 CN CN202410946562.9A patent/CN118705034A/en active Pending
- 2019-01-10 CN CN201910023028.XA patent/CN109538337B/en active Active
- 2019-12-13 WO PCT/CN2019/124981 patent/WO2020143391A1/en active Application Filing
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020143391A1 (en) * | 2019-01-10 | 2020-07-16 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment mixing device |
| IT202000015346A1 (en) * | 2020-06-25 | 2021-12-25 | Marelli Europe Spa | EXHAUST GAS TREATMENT DEVICE FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
| EP3929415A1 (en) | 2020-06-25 | 2021-12-29 | Marelli Europe S.p.A. | Exhaust gas treatment device for an exhaust system of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538337B (en) | 2024-08-16 |
| WO2020143391A1 (en) | 2020-07-16 |
| CN118705034A (en) | 2024-09-27 |
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