CN105804840A - Exhaust gas treatment device - Google Patents
Exhaust gas treatment device Download PDFInfo
- Publication number
- CN105804840A CN105804840A CN201610321530.5A CN201610321530A CN105804840A CN 105804840 A CN105804840 A CN 105804840A CN 201610321530 A CN201610321530 A CN 201610321530A CN 105804840 A CN105804840 A CN 105804840A
- Authority
- CN
- China
- Prior art keywords
- gas treatment
- exhaust gas
- treatment device
- housing
- taper pipe
- 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.)
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Classifications
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- 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
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
An exhaust gas treatment device comprises a casing and a tail gas treatment module located inside the casing, wherein the casing comprises a mixing cavity, a splitting cavity and a distributing cavity; the exhaust gas treatment device further comprises a conical mixer located inside the mixing cavity and a mixing pipe located in the splitting cavity, and the conical mixer comprises a plurality of conical swirl plates and a plurality of openings corresponding to the conical swirl plates. Therefore, on one hand, urea can be laid on the pipe wall of the mixing cavity so as to increase the evaporation area and dwelling time of the urea and improve the mixing effect; on the other hand, exhaust gas can flow more smoothly, the local pressure loss can be reduced, and the back pressure can be reduced.
Description
Technical field
The present invention relates to a kind of exhaust gas treatment device, belong to engine exhaust post-processing technology field.
Background technology
Research shows that in exhaust after treatment system (such as selective catalytic reduction system operating, SCR system) pipeline, overall performance and the endurance quality of system are had important impact by the uniformity coefficient of ammonia distribution.If ammonia skewness can cause that regional area ammonia is too much thus easily causing NH_3 leakage, and causes oxynitride (NOx) transformation efficiency too low at other ammonia thin areas.
In order to improve the uniformity that tail gas mixes with carbamide, exhaust after treatment system more of the prior art are provided with straight-plate-type blender, but aerofluxus by the spinning disk of this blender time smooth and easy not, the bigger pressure loss can be caused.
Therefore, it is necessary to provide a kind of novel exhaust gas treatment device, to solve above-mentioned technical problem.
Summary of the invention
It is an object of the invention to provide that a kind of back pressure is relatively low and the exhaust gas treatment device of mix homogeneously.
nullFor achieving the above object，The present invention adopts the following technical scheme that a kind of exhaust gas treatment device，It includes housing and is positioned at the vent gas treatment module of described housing，Described housing includes hybrid chamber、It is positioned at the branch chamber in described hybrid chamber downstream and is positioned at the distribution cavity in described branch chamber downstream，Described vent gas treatment module is positioned at the downstream of described distribution cavity，Described exhaust gas treatment device includes the cone blender being positioned at described hybrid chamber and the mixing tube being positioned at described branch chamber，Wherein said cone blender includes some taper spinning disks and the some openings corresponding to these taper spinning disks，Described exhaust gas treatment device also includes being fixed on described housing and in order to install the nozzle mounting portion of urea nozzle，Described nozzle mounting portion is positioned at the downstream of described cone blender，Described urea nozzle is in order to the urea liquid of jet atomization in described mixing tube.
As further improved technical scheme of the present invention, described cone blender and described mixing tube weld together.
As further improved technical scheme of the present invention, described cone blender also includes being centered around some first perforates that described taper spinning disk is peripheral, and described first perforate is near described mixing tube.
As further improved technical scheme of the present invention, described exhaust gas treatment device also includes being positioned at described branch chamber and in order to support the first dividing plate and the second partition of described mixing tube, wherein said first dividing plate is provided with some first perforation, and described second partition is provided with some second perforation；Described exhaust gas treatment device includes the annular space between described mixing tube and described housing, and described hybrid chamber is connected by described first perforation with described annular space, and described annular space is connected by described second perforation with described distribution cavity.
As further improved technical scheme of the present invention, described first dividing plate and described second partition are all curved and incline direction is contrary.
As further improved technical scheme of the present invention, described exhaust gas treatment device includes the sleeve part matched with described nozzle mounting portion, described sleeve part is through described annular space and extends in described mixing tube, and the sleeve part being wherein positioned at described annular space is provided with some second perforates.
As further improved technical scheme of the present invention, described housing includes the first housing and the second housing, wherein said first housing is provided with the first Taper Pipe, the first straight tube and the second Taper Pipe, described second housing includes the 3rd Taper Pipe, the second straight tube and the 4th Taper Pipe, wherein said second Taper Pipe passes through together with Flange joint with described 3rd Taper Pipe, and structure thin in centre, that two ends are thick.
As further improved technical scheme of the present invention, described distribution cavity includes the space being positioned at described second Taper Pipe and described 3rd Taper Pipe.
As further improved technical scheme of the present invention, described vent gas treatment module includes the SCR module being installed in described second straight tube.
As further improved technical scheme of the present invention, described exhaust gas treatment device also includes the soot blower being positioned at described SCR module upstream.
Compared to prior art, carbamide can be laid on the tube wall of hybrid chamber to increase Urea Evaporation area and the time of staying by arranging taper spinning disk by the present invention on the one hand, improves the effect of mixing；The flowing that aerofluxus is more unobstructed can be made on the other hand, reduce local pressure loss, reduce back pressure.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of exhaust gas treatment device of the present invention.
Fig. 2 is the perspective view of Fig. 1.
Fig. 3 is the part isometric exploded view of Fig. 1.
Fig. 4 is the three-dimensional exploded view of another angle of Fig. 3.
Fig. 5 is the further three-dimensional exploded view of Fig. 1.
Fig. 6 is the generalized section of line A-A along Fig. 1.
Detailed description of the invention
Please join shown in Fig. 1 to Fig. 6, present invention is disclosed a kind of exhaust gas treatment device 100, in order to process the aerofluxus of electromotor (especially high-power engine).On the whole, described exhaust gas treatment device 100 includes housing 1 and is positioned at the vent gas treatment module 2 of described housing 1.On the whole, described housing 1 includes hybrid chamber 3, is positioned at the branch chamber 4 in described hybrid chamber 4 downstream and is positioned at the distribution cavity 5 in described branch chamber 4 downstream.In illustrative embodiments of the present invention, described vent gas treatment module 2 is SCR module, and it is positioned at the downstream of described distribution cavity 5.
Specifically, described housing 1 includes by Flange joint the first housing 11 and the second housing 12 together, wherein said first housing 11 is provided with the first Taper Pipe the 111, first straight tube 112 and the second Taper Pipe 113, and described second housing 12 includes the 3rd Taper Pipe the 121, second straight tube 122 and the 4th Taper Pipe 123.Wherein, together with described second Taper Pipe 113 passes through Flange joint with described 3rd Taper Pipe 121, and structure thin in centre, that two ends are thick.
Described exhaust gas treatment device 100 also includes the cone blender 6 being positioned at described hybrid chamber 4 and the mixing tube 7 being positioned at described branch chamber 4.In illustrative embodiments of the present invention, described cone blender 6 welds together with described mixing tube 7.Wherein said cone blender 6 includes some taper spinning disks 61, corresponding to some openings 62 of these taper spinning disks 61 and be centered around some first perforates 63 of described taper spinning disk 61 periphery, described first perforate 63 is near described mixing tube 7.Carbamide can be laid on the tube wall of hybrid chamber to increase Urea Evaporation area and the time of staying by taper spinning disk 61 1 aspect of described cone blender 6, improves the effect of mixing；The flowing that aerofluxus is more unobstructed can be made on the other hand, reduce local pressure loss, reduce back pressure.Described first perforate 63 also is able to play the function reducing back pressure.
Described exhaust gas treatment device 100 also includes being positioned at described branch chamber 4 and in order to support the first dividing plate 81 and the second partition 82 of described mixing tube 7, wherein said first dividing plate 81 is provided with some first perforation 811, and described second partition 82 is provided with some second perforation 821.Described exhaust gas treatment device 100 includes the annular space 83 between described mixing tube 7 and described housing 1.Described hybrid chamber 3 is connected by described first perforation 811 with described annular space 83, and described annular space 83 is connected by described second perforation 821 with described distribution cavity 5.In illustrative embodiments of the present invention, described first dividing plate 81 and described second partition 82 is all curved, incline direction is contrary and is symmetrical arranged, to reduce back pressure as much as possible.
Described exhaust gas treatment device 100 also includes being fixed on described housing 1 and in order to install the nozzle mounting portion 13 of urea nozzle (not shown), described nozzle mounting portion 13 is positioned at the downstream of described cone blender 6, and described urea nozzle is in order to the urea liquid of jet atomization in described mixing tube 7.Described exhaust gas treatment device 100 includes the sleeve part 14 matched with described nozzle mounting portion 13, described sleeve part 14 is through described annular space 83 and extends in described mixing tube 7, and the sleeve part 14 being wherein positioned at described annular space 83 is provided with some second perforates 141.
In illustrative embodiments of the present invention, described distribution cavity 5 includes the space being positioned at described second Taper Pipe 113 and described 3rd Taper Pipe 121.So arrange, by making reduced cross-sectional area and expansion, reduce vortex, reduce local pressure loss, make carbamide round and smooth excessively simultaneously, reduce crystallization risk.
In illustrative embodiments of the present invention, described vent gas treatment module 2 is installed in described second straight tube 122.Described exhaust gas treatment device 100 also includes the soot blower 9 being positioned at described SCR module upstream.
Above example be merely to illustrate the present invention and and unrestricted technical scheme described in the invention, understanding of this description should based on person of ordinary skill in the field, although this specification with reference to the above embodiments to present invention has been detailed description, but, it will be understood by those within the art that, the present invention still can be modified or equivalent replacement by person of ordinary skill in the field, and all are without departing from the technical scheme of the spirit and scope of the present invention and improvement thereof, all should be encompassed in scope of the presently claimed invention.
Claims (10)
1. an exhaust gas treatment device, it includes housing and is positioned at the vent gas treatment module of described housing, described housing includes hybrid chamber, it is positioned at the branch chamber in described hybrid chamber downstream and is positioned at the distribution cavity in described branch chamber downstream, described vent gas treatment module is positioned at the downstream of described distribution cavity, it is characterized in that: described exhaust gas treatment device includes being positioned at the cone blender of described hybrid chamber and is positioned at the mixing tube of described branch chamber, wherein said cone blender includes some taper spinning disks and the some openings corresponding to these taper spinning disks, described exhaust gas treatment device also includes being fixed on described housing and in order to install the nozzle mounting portion of urea nozzle, described nozzle mounting portion is positioned at the downstream of described cone blender, described urea nozzle is in order to the urea liquid of jet atomization in described mixing tube.
2. exhaust gas treatment device as claimed in claim 1, it is characterised in that: described cone blender and described mixing tube weld together.
3. exhaust gas treatment device as claimed in claim 1, it is characterised in that: described cone blender also includes being centered around some first perforates that described taper spinning disk is peripheral, and described first perforate is near described mixing tube.
4. exhaust gas treatment device as claimed in claim 1, it is characterized in that: described exhaust gas treatment device also includes being positioned at described branch chamber and in order to support the first dividing plate and the second partition of described mixing tube, wherein said first dividing plate is provided with some first perforation, and described second partition is provided with some second perforation；Described exhaust gas treatment device includes the annular space between described mixing tube and described housing, and described hybrid chamber is connected by described first perforation with described annular space, and described annular space is connected by described second perforation with described distribution cavity.
5. exhaust gas treatment device as claimed in claim 4, it is characterised in that: described first dividing plate and described second partition are all curved and incline direction is contrary.
6. exhaust gas treatment device as claimed in claim 4, it is characterized in that: described exhaust gas treatment device includes the sleeve part matched with described nozzle mounting portion, described sleeve part is through described annular space and extends in described mixing tube, and the sleeve part being wherein positioned at described annular space is provided with some second perforates.
7. exhaust gas treatment device as claimed in claim 1, it is characterized in that: described housing includes the first housing and the second housing, wherein said first housing is provided with the first Taper Pipe, the first straight tube and the second Taper Pipe, described second housing includes the 3rd Taper Pipe, the second straight tube and the 4th Taper Pipe, wherein said second Taper Pipe passes through together with Flange joint with described 3rd Taper Pipe, and structure thin in centre, that two ends are thick.
8. exhaust gas treatment device as claimed in claim 7, it is characterised in that: described distribution cavity includes the space being positioned at described second Taper Pipe and described 3rd Taper Pipe.
9. exhaust gas treatment device as claimed in claim 7, it is characterised in that: described vent gas treatment module includes the SCR module being installed in described second straight tube.
10. exhaust gas treatment device as claimed in claim 9, it is characterised in that: described exhaust gas treatment device also includes the soot blower being positioned at described SCR module upstream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321530.5A CN105804840B (en) | 2016-05-16 | 2016-05-16 | Exhaust gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321530.5A CN105804840B (en) | 2016-05-16 | 2016-05-16 | Exhaust gas treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105804840A true CN105804840A (en) | 2016-07-27 |
| CN105804840B CN105804840B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610321530.5A Active CN105804840B (en) | 2016-05-16 | 2016-05-16 | Exhaust gas treatment device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368773A (en) * | 2016-08-30 | 2017-02-01 | 潍柴动力股份有限公司 | Engine and double-whirl mixing device thereof |
| CN108104912A (en) * | 2016-11-25 | 2018-06-01 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108343490A (en) * | 2018-02-06 | 2018-07-31 | 安徽江淮汽车集团股份有限公司 | A kind of automobile-used DPF device |
| CN108374708A (en) * | 2018-04-26 | 2018-08-07 | 佛吉亚排气控制技术开发(上海）有限公司 | Mixing tube for handling Vehicular exhaust |
| CN108843432A (en) * | 2018-07-27 | 2018-11-20 | 江南大学 | A kind of turbulence structure and combined type SCR mixer applied to vent gas treatment |
| CN109958512A (en) * | 2017-12-14 | 2019-07-02 | 珀金斯发动机有限公司 | Exhaust-gas treatment system for engine |
| CN110023603A (en) * | 2016-12-14 | 2019-07-16 | 珀金斯发动机有限公司 | Pipe-line mixer for after-treatment system |
| CN110792490A (en) * | 2018-08-03 | 2020-02-14 | 佛吉亚排气系统公司 | Inner box flow deflector for a vehicle exhaust system mixer assembly |
| WO2020113456A1 (en) * | 2018-12-05 | 2020-06-11 | 潍柴动力股份有限公司 | Urea mixer and scr system |
| CN114645757A (en) * | 2022-02-15 | 2022-06-21 | 宁波科森净化器制造有限公司 | Tail gas aftertreatment mixing arrangement |
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| CN205618236U (en) * | 2016-05-16 | 2016-10-05 | 天纳克（苏州）排放系统有限公司 | Air exhaust treatment device |
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| DE102006058715B3 (en) * | 2006-12-13 | 2008-01-10 | Audi Ag | Static mixer for an exhaust gas unit on a vehicle operated by an internal combustion engine has flow-control elements influencing exhaust gas flow and slanted at a preset angle against a mixer surface |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368773A (en) * | 2016-08-30 | 2017-02-01 | 潍柴动力股份有限公司 | Engine and double-whirl mixing device thereof |
| CN106368773B (en) * | 2016-08-30 | 2019-03-29 | 潍柴动力股份有限公司 | A kind of engine and its double-cyclone mixing arrangement |
| US11365666B2 (en) | 2016-08-30 | 2022-06-21 | Weichai Power Co., Ltd. | Generator and double-swirl mixing device thereof |
| CN108104912A (en) * | 2016-11-25 | 2018-06-01 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN110023603B (en) * | 2016-12-14 | 2021-06-29 | 珀金斯发动机有限公司 | Line mixer for aftertreatment system |
| CN110023603A (en) * | 2016-12-14 | 2019-07-16 | 珀金斯发动机有限公司 | Pipe-line mixer for after-treatment system |
| CN109958512B (en) * | 2017-12-14 | 2022-08-02 | 珀金斯发动机有限公司 | Exhaust treatment system for engine |
| CN109958512A (en) * | 2017-12-14 | 2019-07-02 | 珀金斯发动机有限公司 | Exhaust-gas treatment system for engine |
| CN108343490A (en) * | 2018-02-06 | 2018-07-31 | 安徽江淮汽车集团股份有限公司 | A kind of automobile-used DPF device |
| CN108374708A (en) * | 2018-04-26 | 2018-08-07 | 佛吉亚排气控制技术开发(上海）有限公司 | Mixing tube for handling Vehicular exhaust |
| CN108843432A (en) * | 2018-07-27 | 2018-11-20 | 江南大学 | A kind of turbulence structure and combined type SCR mixer applied to vent gas treatment |
| CN110792490A (en) * | 2018-08-03 | 2020-02-14 | 佛吉亚排气系统公司 | Inner box flow deflector for a vehicle exhaust system mixer assembly |
| WO2020113456A1 (en) * | 2018-12-05 | 2020-06-11 | 潍柴动力股份有限公司 | Urea mixer and scr system |
| CN114645757A (en) * | 2022-02-15 | 2022-06-21 | 宁波科森净化器制造有限公司 | Tail gas aftertreatment mixing arrangement |
| CN114645757B (en) * | 2022-02-15 | 2023-03-10 | 宁波科森净化器制造有限公司 | Tail gas aftertreatment mixing arrangement |
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