CN107939488A - Vehicle tail gas processing urea mixing device - Google Patents
Vehicle tail gas processing urea mixing device Download PDFInfo
- Publication number
- CN107939488A CN107939488A CN201711410538.XA CN201711410538A CN107939488A CN 107939488 A CN107939488 A CN 107939488A CN 201711410538 A CN201711410538 A CN 201711410538A CN 107939488 A CN107939488 A CN 107939488A
- Authority
- CN
- China
- Prior art keywords
- cavity
- cyclone pipe
- eddy flow
- pipeline section
- tail 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
Links
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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention provides a kind of vehicle tail gas processing urea mixing device, including circular cylindrical cavity, the circular cylindrical cavity side face are equipped with waist cavity；Isocon and cyclone pipe are equipped with the waist cavity；The isocon is equipped with the diffluence pass of connection waist cavity, and isocon sets air inlet towards one end outside waist cavity；The cyclone pipe includes eddy flow section and hole pipeline section, and eddy flow section is located in waist cavity, and hole pipeline section is located in circular cylindrical cavity；The eddy flow section of the cyclone pipe is equipped with whirlpool generation blade around cyclone pipe axis, and the side face of the hole pipeline section is equipped with stomata, the endcapped of hole pipeline section；The urea nozzle mounting base aligned with the eddy flow section of cyclone pipe is equipped with waist cavity；The nearly eddy flow pore pipeline section one end open of circular cylindrical cavity, as gas outlet, the other end away from eddy flow pore pipeline section is closed.The present invention can increase the mixed effect of ammonia mist, tail gas is fully spread with ammonia, be conducive to the processing of tail gas.
Description
Technical field
The present invention relates to a kind of vehicle tail gas processing urea mixing device, belongs to tail gas treatment system of diesel engine equipment skill
Art field.
Background technology
Increasingly stringent with diesel engine emissions regulations, exhaust aftertreatment technology is the technical measures that must be used.And SCR
It disclosure satisfy that state IV, V and VI discharge standard of state, the basic principle of SCR are to pass through urea injection system（It is commonly called as urea pump）Will
32.5% concentration aqueous solution of urea atomization after spray into exhaust pipe in mix with motor exhaust, aqueous solution of urea by pyrolysis with
Hydrolysis generates ammonia（NH3）, ammonia will be harmful in diesel engine vent gas under the action of catalyst oxynitrides（NOx）
It is converted into harmless nitrogen (N2) and water, the top priority of motor exhaust treatment technology SCR routes is tail gas is had with ammonia mist
The biochemical reaction of hybrid concurrency is imitated, while ensures sufficient temp before catalyst is entered.
The content of the invention
Ammonia and tail gas mixed path are shorter in order to solve during existing SCR processing tail gas, and undercompounding influences tail
The problem of gas disposal, the present invention provide a kind of car that can increase ammonia and tail gas mixed path simple in structure, compact to design
With vent gas treatment urea mixing device.The technical solution adopted by the present invention is：
A kind of vehicle tail gas processing urea mixing device, it is mainly theed improvement is that,
Including circular cylindrical cavity, the circular cylindrical cavity side face is equipped with waist cavity；Isocon is equipped with the waist cavity
And cyclone pipe；
The isocon is equipped with the diffluence pass of connection waist cavity, and isocon sets air inlet towards one end outside waist cavity；
The cyclone pipe includes eddy flow section and hole pipeline section, and eddy flow section is located in waist cavity, and hole pipeline section is located in circular cylindrical cavity；
The eddy flow section of the cyclone pipe is equipped with whirlpool generation blade around cyclone pipe axis, and the side face of the hole pipeline section is equipped with stomata, hole
The endcapped of pipeline section；
The urea nozzle mounting base aligned with the eddy flow section of cyclone pipe is equipped with waist cavity；
The nearly eddy flow pore pipeline section one end open of circular cylindrical cavity, as gas outlet, away from another end seal of eddy flow pore pipeline section
Close.
Further, one end of the nearly urea nozzle mounting base of cyclone pipe forward spin flow section is equipped with horn-like deflector.
Further, stomata is evenly distributed with the hole pipeline section side face of cyclone pipe.
Further, urea is equipped among urea nozzle mounting base into hole, urea into hole center with cyclone pipe axis
In same axis.
Further, isocon is parallel with the axis of cyclone pipe.
Further, temperature sensor is equipped with circular cylindrical cavity.
Further, isocon and cyclone pipe are located at waist cavity left and right ends half-circle area respectively.
The advantage of the invention is that：The urea mixing device is simple in structure, compact to design, easy to use, waist cavity
Setting provides ammonia mist blending space, and the setting of cyclone pipe and isocon can increase the mixed effect of ammonia mist, mixed gas warp
Dissipated around uniformly by eddy flow pore pipeline section after crossing waist cavity, tail gas is fully spread with ammonia, be conducive to tail gas
Processing.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention.
Fig. 2 is the angle appearance schematic diagram of the present invention.
Fig. 3 is another angle appearance schematic diagram of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in FIG. 1 to 3, vehicle tail gas processing urea mixing device provided by the invention, including isocon 1, waist
Type end cap 2, urea nozzle mounting base 3, circular cylinder body 4, cyclone pipe 5, deflector 6, waist type tube body 7, round end cap 8；
Waist type end cap 2 forms waist cavity with waist type tube body 7, and circular cylinder body 4 forms circular cylindrical cavity with round end cap 8；Waist type
Cavity is located on circular cylindrical cavity side face；
Isocon 1 and cyclone pipe 5 are equipped with waist cavity；Isocon 1 and cyclone pipe 5 are respectively positioned at waist cavity left and right ends half
Circle region, and isocon 1 is parallel with the axis of cyclone pipe 5；
One end of isocon 1 is stretched out from waist cavity, and the end is as air inlet, for importing the tail gas of automobile engine；Shunting
Pipe 1 is equipped with the diffluence pass 101 of connection waist cavity；Diffluence pass 101 is rectangle, can set 2~3；
The cyclone pipe 5 includes eddy flow section 501 and hole pipeline section 502, and eddy flow section 501 is located in waist cavity, and hole pipeline section 502 is located at
In circular cylindrical cavity；The eddy flow section of the cyclone pipe is equipped with whirlpool generation blade 503, the hole pipeline section around cyclone pipe axis
502 side face is equipped with equally distributed stomata, and the end of hole pipeline section 502 is connected to circular cylinder body 4 so as to close；Another real
Apply in mode, the end of hole pipeline section 502 can also be closed with an end cap；
Urea nozzle mounting base 3 is set on waist type end cap 2, and urea nozzle mounting base 3 is directed at the eddy flow section 501 of cyclone pipe；Urea
Urea is equipped among nozzle mounting base 3 and is in same axis with cyclone pipe axis into hole 301, the center in urea into hole 301, from
And can be parallel with eddy flow tube axis direction with the urea that the urea nozzle of urea nozzle mounting base connection ejects；
One end of 501 nearly urea nozzle mounting base 3 of cyclone pipe forward spin flow section is equipped with horn-like deflector 6；
Nearly 502 one end open of eddy flow pore pipeline section of circular cylindrical cavity, as gas outlet, away from the another of eddy flow pore pipeline section 502
One end is equipped with round end cap 8 so as to close.
Application method：The air inlet of isocon 1 is connected with the tail gas of automobile engine（Flanged joint, reducing can be used
Pipe connection, directly welding or direct extending cavity）, can also connect with other exhaust gas processing devices（Flanged joint can be used, become
Footpath pipe connection, directly weld）.The tail gas of automobile engine enters waist cavity by the air inlet of isocon 1, and via isocon
The eddy flow section 501 on 5 top of cyclone pipe is entered back into after 1 shunting, whirlpool is formed by the whirlpool generation blade 503 on 5 top of cyclone pipe
Shape air-flow, urea liquid are sprayed into by the axis direction of the parallel cyclone pipe of urea nozzle installed in urea nozzle mounting base 3, whirlpool
Shape air-flow breaks up urea, while urea volatilizes ammonia at high temperature, and the bootable gas flow purging urea nozzle of deflector 6, keeps away
Exempt to crystallize.
Ammonia and vehicle exhaust be sufficiently mixed after gas, dissipated around by 5 bottom hole pipeline section 502 of cyclone pipe,
Circular cylindrical cavity is distributed in flow out from gas outlet with parallel airflow；Mixed gas after outflow is catalyzed into SCR catalyst.
Can be with set temperature sensor in the side wall of circular cylindrical cavity；Temperature sensor can more accurately control tail
The catalytic treatment of gas.
Whole urea mixing device is suitable for various cartridge types, box SCR type exhaust aftertreatment products, invention entirety
Structure size is small, and appropriate amplification and diminution can be also selected according to extraction flow, is a kind of economic, efficient, urine of strong applicability
Plain mixing arrangement.
It should be noted last that above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those of ordinary skill in the art that, can be to the present invention
Technical solution technical scheme is modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention, it should all cover
Among scope of the presently claimed invention.
Claims (7)
- A kind of 1. vehicle tail gas processing urea mixing device, it is characterised in thatIncluding circular cylindrical cavity, the circular cylindrical cavity side face is equipped with waist cavity；Isocon is equipped with the waist cavity And cyclone pipe；The isocon is equipped with the diffluence pass of connection waist cavity, and isocon sets air inlet towards one end outside waist cavity；The cyclone pipe includes eddy flow section and hole pipeline section, and eddy flow section is located in waist cavity, and hole pipeline section is located in circular cylindrical cavity； The eddy flow section of the cyclone pipe is equipped with whirlpool generation blade around cyclone pipe axis, and the side face of the hole pipeline section is equipped with stomata, hole The endcapped of pipeline section；The urea nozzle mounting base aligned with the eddy flow section of cyclone pipe is equipped with waist cavity；The nearly eddy flow pore pipeline section one end open of circular cylindrical cavity, as gas outlet, away from another end seal of eddy flow pore pipeline section Close.
- 2. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatOne end of the nearly urea nozzle mounting base of cyclone pipe forward spin flow section is equipped with horn-like deflector.
- 3. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatStomata is evenly distributed with the hole pipeline section side face of cyclone pipe.
- 4. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatUrea is equipped among urea nozzle mounting base and is in same axis with cyclone pipe axis into hole, the center in urea into hole.
- 5. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatIsocon is parallel with the axis of cyclone pipe.
- 6. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatTemperature sensor is equipped with circular cylindrical cavity.
- 7. vehicle tail gas processing urea mixing device as claimed in claim 1, it is characterised in thatIsocon and cyclone pipe are located at waist cavity left and right ends half-circle area respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711410538.XA CN107939488B (en) | 2017-12-23 | 2017-12-23 | Urea mixing device for treating vehicle tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711410538.XA CN107939488B (en) | 2017-12-23 | 2017-12-23 | Urea mixing device for treating vehicle tail gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107939488A true CN107939488A (en) | 2018-04-20 |
| CN107939488B CN107939488B (en) | 2020-03-17 |
Family
ID=61939828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711410538.XA Active CN107939488B (en) | 2017-12-23 | 2017-12-23 | Urea mixing device for treating vehicle tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939488B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573351A (en) * | 2012-07-20 | 2014-02-12 | 曼卡车和巴士股份公司 | Mixing device for the aftertreatment of exhaust gases |
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| CN205779152U (en) * | 2016-07-04 | 2016-12-07 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN106401715A (en) * | 2016-10-24 | 2017-02-15 | 无锡威孚力达催化净化器有限责任公司 | Inclined tube type rotationally-flowing urea mixing device |
| CN206016918U (en) * | 2016-08-30 | 2017-03-15 | 无锡威孚力达催化净化器有限责任公司 | A kind of carbamide injection mixed cell for cartridge type depurator |
| CN106762050A (en) * | 2015-11-20 | 2017-05-31 | 罗伯特·博世有限公司 | Integrated form exhaust gas aftertreatment system |
| CN207686806U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Vehicle tail gas processing urea mixing device |
-
2017
- 2017-12-23 CN CN201711410538.XA patent/CN107939488B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573351A (en) * | 2012-07-20 | 2014-02-12 | 曼卡车和巴士股份公司 | Mixing device for the aftertreatment of exhaust gases |
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| CN106762050A (en) * | 2015-11-20 | 2017-05-31 | 罗伯特·博世有限公司 | Integrated form exhaust gas aftertreatment system |
| CN205779152U (en) * | 2016-07-04 | 2016-12-07 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN206016918U (en) * | 2016-08-30 | 2017-03-15 | 无锡威孚力达催化净化器有限责任公司 | A kind of carbamide injection mixed cell for cartridge type depurator |
| CN106401715A (en) * | 2016-10-24 | 2017-02-15 | 无锡威孚力达催化净化器有限责任公司 | Inclined tube type rotationally-flowing urea mixing device |
| CN207686806U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Vehicle tail gas processing urea mixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107939488B (en) | 2020-03-17 |
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