CN106246303A - Tail-gas after treatment apparatus - Google Patents
Tail-gas after treatment apparatus Download PDFInfo
- Publication number
- CN106246303A CN106246303A CN201610888496.XA CN201610888496A CN106246303A CN 106246303 A CN106246303 A CN 106246303A CN 201610888496 A CN201610888496 A CN 201610888496A CN 106246303 A CN106246303 A CN 106246303A
- Authority
- CN
- China
- Prior art keywords
- tail
- gas
- treatment apparatus
- mixing tube
- exhaust gas
- 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
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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
- F01N3/18—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
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
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 tail-gas after treatment apparatus, it includes housing, mixer assembly and post processing carrier.Described housing is provided with tail gas inlet channel and in order to install the mounting seat of urea nozzle.Described urea nozzle is provided with the spray-hole being positioned at its end.Described tail-gas after treatment apparatus is additionally provided with exhaust gas guide portion and at least partially about the peripheral catch at described spray-hole, and described exhaust gas guide portion is provided with the exhaust gas guide passage being connected with described tail gas inlet channel.It is arranged such, on the one hand, improve the temperature near spray-hole, reduces the risk of urea crystals；On the other hand, the urea droplets ejected can be taken away by eddy flow soon that formed due to catch, it is to avoid dead band, thus also reduces the risk of urea crystals.
Description
Technical field
The present invention relates to a kind of tail-gas after treatment apparatus, belong 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 impact to overall performance and the endurance quality of system.If ammonia skewness can cause regional area
Ammonia too much thus easily causes NH_3 leakage, and causes oxynitride (NOx) transformation efficiency too low at other ammonia thin areas.Long
The uneven distribution of time ammonia can cause catalyst aging uneven, thus affects the overall performance of catalyst.It addition, urea solution
The uneven distribution dripped can cause local tube wall or mixed structure temperature too low, forms crystallization, can block exhaustor, leads time serious
Cause engine power performance declines.
Therefore, it is necessary to provide a kind of novel tail-gas after treatment apparatus, to solve above-mentioned technical problem.
Summary of the invention
It is an object of the invention to provide a kind of tail-gas after treatment apparatus that can reduce urea crystals risk.
For achieving the above object, the present invention adopts the following technical scheme that
As further improved technical scheme of the present invention, a kind of tail-gas after treatment apparatus, it includes housing, is arranged on described shell
Internal mixer assembly and be positioned at the post processing carrier in downstream of described mixer assembly；Described housing is provided with tail gas air inlet
Passage and in order to install the mounting seat of urea nozzle, described urea nozzle is provided with and is positioned at its end and in order to described blender
Assembly sprays the spray-hole of urea droplets；Described tail-gas after treatment apparatus is additionally provided with exhaust gas guide portion and leads with described tail gas
The portion of drawing matches and at least partially about the peripheral catch at described spray-hole, wherein said catch near described spray-hole,
Described exhaust gas guide portion is provided with the exhaust gas guide passage being connected with described tail gas inlet channel.
As further improved technical scheme of the present invention, described mixer assembly includes that mixing tube, described mixing tube set
There is the hybrid chamber being connected with described tail gas inlet channel and in order to the tail gas of described hybrid chamber and/or tail gas and urine will be entered
The mixed airflow of element drop forms some spinning disks of vortex flow.
As further improved technical scheme of the present invention, described catch is arc-shaped and is positioned at described hybrid chamber, institute
State exhaust gas guide passage and tangentially enter the inner surface of described catch to form eddy flow on the internal surface.
As further improved technical scheme of the present invention, described catch is C-shaped or O shape or spiral type.
As further improved technical scheme of the present invention, cylindrically, described spinning disk is outwards punching to described mixing tube
Pressing described mixing tube to be formed, described spinning disk is distributed on the outer circumference surface of described mixing tube；Described mixing tube be provided with
Described spinning disk opening one to one, described hybrid chamber is connected by described opening with described tail gas inlet channel.
As further improved technical scheme of the present invention, described mixing tube is provided with near described mounting seat and is distributed in institute
Stating the some perforates on outer circumference surface, described perforate is positioned at described mounting seat and described rotation on the axis direction of described mixing tube
Between flow.
As further improved technical scheme of the present invention, described housing is provided with on the one end being welded on described mixing tube
Cover plate, described mounting seat is welded on the side of described cover plate, described catch and/or described exhaust gas guide portion and is welded on described cover plate
Opposite side.
As further improved technical scheme of the present invention, described exhaust gas guide portion is fixed on described mixing tube, described
Exhaust gas guide passage is provided with the exhaust gas guide mouth being exposed on described mixing tube.
As further improved technical scheme of the present invention, described mixer assembly is provided with and is positioned at bottom described mixing tube
Bowl cover and the Z-shaped dividing plate matched with described mixing tube, wherein said mixing tube includes the air stream outlet being positioned at lower end, described
Described housing is separated into the first cavity and the second cavity by dividing plate, and wherein said first cavity connects with described hybrid chamber, institute
Stating the second cavity to connect with described air stream outlet, described bowl cover is in order to force flow reversal.
As further improved technical scheme of the present invention, described mixer assembly is provided with discoid installation portion and convex
Go out described installation portion and the some spoilers extended to described post processing carrier.
Compared to prior art, the present invention is by arranging exhaust gas guide passage, it is possible to directly draw to major general's small part tail gas
Near spray-hole, and under the effect of catch, form eddy flow.It is arranged such, on the one hand, improve the temperature near spray-hole
Degree, reduces the risk of urea crystals；On the other hand, the urine that the eddy flow formed due to catch can will eject soon
Element drop is taken away, it is to avoid dead band, thus also reduces the risk of urea crystals.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of tail-gas after treatment apparatus of the present invention.
Fig. 2 is the part isometric exploded view of Fig. 1.
Fig. 3 is the further three-dimensional exploded view of Fig. 2.
Fig. 4 is the exhaust gas guide portion in Fig. 3 and the schematic perspective view of catch.
Fig. 5 is the schematic perspective view of mixer assembly in Fig. 2.
Fig. 6 is the part isometric exploded view of Fig. 5.
Fig. 7 is the part isometric exploded view of another angle of Fig. 6.
Fig. 8 is the partial enlarged drawing of circled portion in Fig. 5.
Fig. 9 be mixer assembly in the part isometric exploded view of another embodiment, wherein the structure of catch and Fig. 6 are slightly
Different.
Figure 10 is the part isometric exploded view of another angle of Fig. 9.
Figure 11 is the generalized section of line A-A along Fig. 1.
Figure 12 is the tail-gas after treatment apparatus of the present invention generalized section in another embodiment.
Detailed description of the invention
Please join shown in Fig. 1 to Figure 11, present invention is disclosed a kind of tail-gas after treatment apparatus 100, in order to process diesel engine
The tail gas of machine, it includes housing 1, the mixer assembly 2 being arranged in described housing 1, is positioned at the downstream of described mixer assembly 2
Post processing carrier 3 and anti-urea crystals structure 4.Please join shown in Figure 11, in illustrative embodiments of the present invention, described after
Process carrier 3 and include selective catalytic reducing agent (SCR) 31 and NH_3 leakage catalyst converter (ASC) 32.
Described housing 1 is provided with tail gas inlet channel 11, in order to install the mounting seat 12 of urea nozzle 5 and in order to weld
State the cover plate 13 of mounting seat 12.Described urea nozzle 5 is provided with and is positioned at its end and in order to injection urine in described mixer assembly 2
The spray-hole 51 of element drop.
In one embodiment of the invention, described mixer assembly 2 includes mixing tube 21, is positioned at described mixing tube 21
The bowl cover 22 of bottom and the Z-shaped dividing plate 23 that matches with described mixing tube 21.
In illustrative embodiments of the present invention, cylindrically, it is provided with and leads to described tail gas air inlet described mixing tube 21
Hybrid chamber 211 that road 11 is connected and in order to the mixed of the tail gas of described hybrid chamber 211 and/or tail gas and urea droplets will be entered
Close air-flow and form some spinning disks 212 of vortex flow.It is arranged such, it is possible to increase tail gas and the mixing distance of urea droplets, changes
Kind mixed effect.Described spinning disk 212 is mixing tube 21 described in outside punching press and is formed, and described spinning disk 212 is distributed in institute
State on the outer circumference surface of mixing tube 21.Described mixing tube 21 is provided with and described spinning disk 212 opening 213 one to one, described
Described hybrid chamber 211 is connected by opening 213 with described tail gas inlet channel 11.It addition, described mixing tube 21 is provided with close
Described mounting seat 12 and the some perforates 214 being distributed on described outer circumference surface, described perforate 214 is at the axle of described mixing tube 21
On line direction between described mounting seat 12 and described spinning disk 212.Described perforate 214 can allow partial tail gas pass, and one
Aspect improves the temperature near urea nozzle 5, reduces the risk of urea crystals；On the other hand, contribute to ejecting
Urea droplets take away, thus also reduce the risk of urea crystals.Described mixing tube 21 also includes that the air-flow being positioned at lower end goes out
Mouth 215(joins Figure 11).
Described housing 1 is separated into the first cavity 231 and the second cavity 232, wherein said first chamber by described dividing plate 23
Body 231 connects with described hybrid chamber 211, and described second cavity 232 connects with described air stream outlet 215.Described bowl cover 22 in order to
Force flow reversal, add Urea Evaporation away from discrete time, improve the uniformity of air-flow mixing.
Please join shown in Fig. 4, described anti-urea crystals structure 4 is one whistle of picture in illustrative embodiments of the present invention, its
Including exhaust gas guide portion 41 and match with described exhaust gas guide portion 41 and at least partially about outside described spray-hole 51
The catch 42 enclosed, wherein said catch 42 is near described spray-hole 51, and described exhaust gas guide portion 41 is provided with and described tail gas air inlet
The exhaust gas guide passage 411 that passage 11 is connected.Preferably, described catch 42 in arc-shaped and is positioned at described hybrid chamber 211.
Described exhaust gas guide passage 411 tangentially enters the inner surface of described catch 42 to form eddy flow on the internal surface.
It is arranged such, on the one hand, improve the temperature near spray-hole 51, reduces the risk of urea crystals；On the other hand, due to gear
The urea droplets ejected can be taken away by eddy flow that sheet 42 is formed soon, it is to avoid dead band, thus also reduces urine
The risk of element crystallization.Described exhaust gas guide portion 41 can be one or more.
Please join shown in Fig. 4, in one embodiment of the invention, described catch 42 is in O shape.Please join Fig. 9 and Figure 10 institute
Showing, in another embodiment of the invention, described catch 42 is C-shaped.Certainly, described catch 42 can also be spiral type etc.
Every it is easily formed the variously-shaped of eddy flow.In other embodiments, described catch can also V-shaped other shapes such as grade.
Described cover plate 13 is welded on (such as upper end) on one end of described mixing tube 21.Described mounting seat 12 is welded on described
The side (such as upside) of cover plate 13, described catch 42 and/or described exhaust gas guide portion 41 are welded on another of described cover plate 13
Side (such as downside).In illustrative embodiments of the present invention, described exhaust gas guide portion 41 is fixed on described mixing tube 21.Institute
State exhaust gas guide passage 411 and be provided with the exhaust gas guide mouth being exposed on described mixing tube 21.
Please join shown in Figure 12, aforementioned anti-urea crystals structure 4 can also be applied at tail-gas after treatment apparatus 100 of the present invention
In another embodiment.In both embodiments, identical number designation represents same or similar element.Can manage
Solve, the tail-gas after treatment apparatus 100 in the second embodiment and the framework of the tail-gas after treatment apparatus 100 in the first embodiment
Difference, the most in this second embodiment, mixer assembly 2 is provided with discoid installation portion 24 and protrudes described installation portion 24
And to some spoilers 25 of described post processing carrier 3 extension.Described spoiler 25 can improve the urea droplets after atomization with
The mixing uniformity of tail gas.
It addition, above example be merely to illustrate the present invention and and unrestricted technical scheme described in the invention, to this
The understanding of description 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, but, it will be understood by those within the art that, the technology of art
The present invention still can be modified or equivalent by personnel, and all are without departing from the technology of the spirit and scope of the present invention
Scheme and improvement thereof, all should contain in scope of the presently claimed invention.
Claims (10)
1. a tail-gas after treatment apparatus, it includes housing, the mixer assembly being arranged in described housing and is positioned at described
The post processing carrier in the downstream of mixer assembly；Described housing is provided with tail gas inlet channel and in order to install the peace of urea nozzle
Dress seat, described urea nozzle is provided with and is positioned at its end and in order to spray the spray-hole of urea droplets in described mixer assembly；
It is characterized in that: described tail-gas after treatment apparatus is additionally provided with exhaust gas guide portion and matches with described exhaust gas guide portion and at least
Partially surrounding the peripheral catch at described spray-hole, wherein said catch sets near described spray-hole, described exhaust gas guide portion
There is the exhaust gas guide passage being connected with described tail gas inlet channel.
2. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that: described mixer assembly includes mixing tube, institute
State mixing tube be provided with the hybrid chamber being connected with described tail gas inlet channel and in order to by enter described hybrid chamber tail gas and/
Or the mixed airflow of tail gas and urea droplets forms some spinning disks of vortex flow.
3. tail-gas after treatment apparatus as claimed in claim 2, it is characterised in that: described catch is arc-shaped and is positioned at described mixed
Closing intracavity, described exhaust gas guide passage tangentially enters the inner surface of described catch to form rotation on the internal surface
Stream.
4. tail-gas after treatment apparatus as claimed in claim 3, it is characterised in that: described catch is C-shaped or O shape or spiral
Shape.
5. tail-gas after treatment apparatus as claimed in claim 2, it is characterised in that: described mixing tube cylindrically, described eddy flow
Sheet is mixing tube described in outside punching press and is formed, and described spinning disk is distributed on the outer circumference surface of described mixing tube；Described mixed
Closing pipe to be provided with and described spinning disk opening one to one, described hybrid chamber is connected by described opening with described tail gas inlet channel
Get up.
6. tail-gas after treatment apparatus as claimed in claim 5, it is characterised in that: described mixing tube is provided with near described mounting seat
And the some perforates being distributed on described outer circumference surface, described perforate is positioned at described installation on the axis direction of described mixing tube
Between seat and described spinning disk.
7. tail-gas after treatment apparatus as claimed in claim 6, it is characterised in that: described housing is provided with and is welded on described mixing tube
One end on cover plate, described mounting seat is welded on the side of described cover plate, described catch and/or the welding of described exhaust gas guide portion
Opposite side at described cover plate.
8. tail-gas after treatment apparatus as claimed in claim 7, it is characterised in that: described exhaust gas guide portion is fixed on described mixing
Guan Shang, described exhaust gas guide passage is provided with the exhaust gas guide mouth being exposed on described mixing tube.
9. tail-gas after treatment apparatus as claimed in claim 2, it is characterised in that: described mixer assembly is provided with and is positioned at described mixing
Closing the bowl cover bottom pipe and the Z-shaped dividing plate matched with described mixing tube, wherein said mixing tube includes the gas being positioned at lower end
Flow export, described housing is separated into the first cavity and the second cavity by described dividing plate, and wherein said first cavity is mixed with described
Conjunction chamber connects, and described second cavity connects with described air stream outlet, and described bowl cover is in order to force flow reversal.
10. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that: described mixer assembly is provided with discoid
Installation portion and protrude described installation portion and to described post processing carrier extend some spoilers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888496.XA CN106246303B (en) | 2016-10-12 | 2016-10-12 | Tail-gas after treatment apparatus |
| PCT/CN2017/104330 WO2018068667A1 (en) | 2016-10-12 | 2017-09-29 | Tail gas after-treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888496.XA CN106246303B (en) | 2016-10-12 | 2016-10-12 | Tail-gas after treatment apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246303A true CN106246303A (en) | 2016-12-21 |
| CN106246303B CN106246303B (en) | 2019-01-15 |
Family
ID=57611570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610888496.XA Active CN106246303B (en) | 2016-10-12 | 2016-10-12 | Tail-gas after treatment apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106246303B (en) |
| WO (1) | WO2018068667A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640301A (en) * | 2017-02-22 | 2017-05-10 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment device |
| 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 |
| WO2018068667A1 (en) * | 2016-10-12 | 2018-04-19 | 天纳克（苏州）排放系统有限公司 | Tail gas after-treatment device |
| CN108194179A (en) * | 2018-03-14 | 2018-06-22 | 潍柴动力股份有限公司 | A kind of post processing air inlet mixing arrangement |
| CN108979803A (en) * | 2018-07-25 | 2018-12-11 | 武汉水草能源科技研发中心(有限合伙) | The method and device of liquid and gas mixing |
| CN109083722A (en) * | 2017-06-14 | 2018-12-25 | 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 |
| 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 |
| CN109973185A (en) * | 2019-03-20 | 2019-07-05 | 苏州国方汽车电子有限公司 | A kind of exhaust mixed structure for diesel engine vent gas post-processing |
| CN116764406A (en) * | 2023-06-15 | 2023-09-19 | 连云港石化有限公司 | Low-resistance tail gas collaborative purification device |
| US11767783B2 (en) | 2019-07-04 | 2023-09-26 | Donaldson Company, Inc. | System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20215978A1 (en) * | 2021-09-16 | 2023-03-17 | Proventia Oy | Method in a flow device for exhaust gas aftertreatment and the flow device |
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| CN108979801A (en) * | 2017-07-27 | 2018-12-11 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement |
| 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 |
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| CN108979803B (en) * | 2018-07-25 | 2023-07-25 | 武汉水草能源科技研发中心(有限合伙) | Method and device for mixing liquid and gas |
| CN109973185A (en) * | 2019-03-20 | 2019-07-05 | 苏州国方汽车电子有限公司 | A kind of exhaust mixed structure for diesel engine vent gas post-processing |
| US11767783B2 (en) | 2019-07-04 | 2023-09-26 | Donaldson Company, Inc. | System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same |
| CN116764406A (en) * | 2023-06-15 | 2023-09-19 | 连云港石化有限公司 | Low-resistance tail gas collaborative purification device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018068667A1 (en) | 2018-04-19 |
| CN106246303B (en) | 2019-01-15 |
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