CN108005763A - urea cyclone mixer - Google Patents
urea cyclone mixer Download PDFInfo
- Publication number
- CN108005763A CN108005763A CN201711454587.3A CN201711454587A CN108005763A CN 108005763 A CN108005763 A CN 108005763A CN 201711454587 A CN201711454587 A CN 201711454587A CN 108005763 A CN108005763 A CN 108005763A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- urea
- eddy flow
- flow part
- antipriming 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.)
- Pending
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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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
- F01N3/2896—Liquid catalyst carrier
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- 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
The present invention provides a kind of urea cyclone mixer, including a cylinder, it is mainly theed improvement is that, the both ends of the cylinder are open, and one end is as air inlet, and the other end is as gas outlet；A Z-shaped baffle is equipped with cylinder, cylinder lumen is divided into ante-chamber and back cavity by the Z-shaped baffle；Eddy flow part and antipriming pipe are equipped with cylinder, the eddy flow part and antipriming pipe are connected to the transverse part of the Z-shaped baffle；Eddy flow part is connected with antipriming pipe；Eddy flow part is located at the ante-chamber of cylinder, and antipriming pipe is located at the back cavity of cylinder；The eddy flow part is equipped with swirl vane；Eddy flow part top connects nozzle, and the nozzle is stretched out from cylinder side face；The tube wall of the antipriming pipe is equipped with multiple stomatas.The cyclone mixer makes hydrolysis of urea complete, it is not easy to crystallizes, back pressure is low, and section gathers compact.
Description
Technical field
The present invention relates to a kind of urea cyclone mixer, apply in trap-oxidizer used urea SCR system.
Background technology
At present, with increasingly attention of the country to environmental law, emission of diesel engine regulation state four, the progressively implementation of state five,
Trap-oxidizer reduces NOX using urea and is increasingly taken seriously, and hydrolysis of urea is anti-into that could occur with NOX after ammonia
Should, the hydrolysis of urea is presently mainly to be realized by mixer, but the mixer used at present easily produces greater back-pressure, shadow
Ring engine power；It is and insufficient to hydrolysis of urea；NOX cannot be effectively reduced, and easily produces crystalline polamer.
The content of the invention
During it is an object of the invention to overcome the shortcomings of the work of above-mentioned mixer, solve section and gather back pressure under compact layout
Greatly, the defects of insufficient is hydrolyzed, the present invention provides a kind of urea cyclone mixer, makes hydrolysis of urea complete, it is not easy to crystallize, carry on the back
Force down, section gathers compact；The technical solution adopted by the present invention is：
A kind of urea cyclone mixer, including a cylinder, it is mainly theed improvement is that,
The both ends of the cylinder are open, and one end is as air inlet, and the other end is as gas outlet；
A Z-shaped baffle is equipped with cylinder, cylinder lumen is divided into ante-chamber and back cavity by the Z-shaped baffle；
Eddy flow part and antipriming pipe are equipped with cylinder, the eddy flow part and antipriming pipe are connected to the transverse part of the Z-shaped baffle；Rotation
Stream part is connected with antipriming pipe；Eddy flow part is located at the ante-chamber of cylinder, and antipriming pipe is located at the back cavity of cylinder；
The eddy flow part is equipped with swirl vane；Eddy flow part top connects nozzle, and the nozzle is stretched out from cylinder side face；
The tube wall of the antipriming pipe is equipped with multiple stomatas.
Further, eddy flow part uses hemispherical end cap, and covering windowing in hemispherical end sets multiple swirl vanes.
Further, the louver angle of swirl vane is 45 °~60 °, and swirl vane covers uniformly distributed in hemispherical end.
Alternatively, eddy flow part uses cyclone pipe, swirl vane is equipped with around cyclone pipe axis on cyclone pipe.
Further, in the ante-chamber of cylinder, the first vent gas treatment carrier is equipped with before eddy flow part.
Further, the first vent gas treatment carrier is grain catcher.
Further, in the back cavity of cylinder, the second vent gas treatment carrier is equipped with after antipriming pipe.
Further, the second vent gas treatment carrier is SCR carriers.
Further, the cylinder includes the first cylinder and the second cylinder being connected；Close to first in the second cylinder
The Z-shaped baffle, eddy flow part and antipriming pipe are set in the cylinder section of cylinder.
Further, the stomata on porous tube wall is evenly distributed with.
Advantages of the present invention：
1）Multiple swirl vanes are uniformly opened up by being covered in hemispherical end, tail gas primary air forms more by multiple swirl vanes
Group air-flow, multigroup air-flow are hit together so that urea atomization is uniform；Using advanced cyclone structure, last eddy flow is in difference
Angle sprays, and hits together so that urea atomization is uniform.
2）The urea cyclone mixer and carrier are in same cylinder, and air-flow is big by sectional area, and back pressure is relatively low；Due to
Multigroup air-flow constantly hits and drives urea to be threadingly advanced, and urea is easier to hydrolyze, is atomized, and ammonia mixes evenly with exhaust gas；
Finally uniformly pass through antipriming pipe, again hydrolysis atomization.
3）Urea atomization is uniform, and SCR conversion efficiency can be substantially improved；Substantially urea crystals phenomenon is prevented.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1, a kind of urea cyclone mixer provided by the invention, including the first cylinder 1, the first vent gas treatment carry
Body 2, first pads the 3, second cylinder 4, Z-shaped baffle 5, nozzle 6, hemispherical end cap 7, antipriming pipe 8, second and pads the 9, second tail gas
Handle carrier 10；
For the ease of assembling Z-shaped baffle 5, hemispherical end cap 7, antipriming pipe 8, the cylinder of the mixer uses the first of both ends open
1 and second cylinder 4 of cylinder is welded, and first can assemble Z-shaped baffle 5, hemispherical end cap 7, antipriming pipe in the second cylinder 4
After 8, then the first cylinder 1 and the second cylinder 4 welded；Wherein Z-shaped baffle 5, hemispherical end cap 7, antipriming pipe 8 weld together；
Air inlet of the front end of first cylinder 1 as whole cylinder, the gas outlet of the rear end of the second cylinder 4 as whole cylinder；
Cylinder lumen is divided into ante-chamber and back cavity by the Z-shaped baffle 5；
In the first cylinder 1, the first vent gas treatment carrier 2 is installed, the first pad 3 is used to wrap in the first vent gas treatment carrier 2
Wrap up in, it is fixed；First vent gas treatment carrier 2 can be grain catcher（DPF）；
In the second cylinder 4 Z-shaped baffle 5 is welded in the cylinder section of the first cylinder 1；Hemispherical end cap 7 and antipriming pipe 8 weld
In the transverse part 501 of the Z-shaped baffle 5；Hemispherical end cap 7 is located at the ante-chamber of cylinder, and antipriming pipe 8 is located at the back cavity of cylinder；Half
Spherical end cover 7 is connected with antipriming pipe 8；Multiple swirl vanes 701, louver angle are uniformly arranged in 7 uplifting window of hemispherical end cap
It is preferred with 45 °~60 °；7 top of hemispherical end cap connects nozzle 6, and the nozzle 6 is stretched out from 4 side face of the second cylinder；Using hemisphere
Shape end cap 7 is that its eddy flow effect is more preferable, and caused back pressure is low as the benefit of eddy flow part；Easy to process, swirl vane is adopted
Use punch forming；
In other embodiments, eddy flow part can also use cyclone pipe, and eddy flow is equipped with around cyclone pipe axis on cyclone pipe
Blade 701；
Equal qi-emitting hole on the tube wall of antipriming pipe 8；
It is in the second cylinder 4 in the back cavity of cylinder, the second vent gas treatment carrier 10 is equipped with after antipriming pipe 8；Second pad 9 is used
Wrapped up in by the second vent gas treatment carrier 10, it is fixed；Second vent gas treatment carrier can be SCR carriers；SCR is selected
The catalysis reduction of selecting property；
In use, the air inlet of the first cylinder is passed through tail gas, urea is sprayed into from nozzle 6；
Tail gas primary air forms multigroup air-flow by the swirl vane 701 on hemispherical end cap 7, while urea is sprayed from nozzle 6
Into after hemispherical end cap 7, urea and multigroup air-flow are hit together so that urea is crushed, hydrolyzes, is atomized, and tail gas drives urine
Element is threadingly advanced, and is hydrolyzed, is atomized again by antipriming pipe 8, final uniform diffusion；Since multigroup air-flow constantly hits and drives
Urea is threadingly advanced, and urea is easier to hydrolyze, is atomized, and ammonia mixes evenly with exhaust gas；Finally uniformly by antipriming pipe, then
Secondary hydrolysis atomization；Then SCR carriers are passed through；
To sum up, the invention enables urea atomization it is more thorough, mixed with tail gas more uniform；Using advanced cyclone technique, most
Vortex gas-flow is sprayed in multi-angle afterwards, is hit together so that urea atomization is uniform；SCR conversion efficiency can be substantially improved；Base
Originally urea crystals phenomenon is prevented；Structure is extremely compact, and back pressure is low, can be widely applied to diesel vehicle after-treatment system.
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 (10)
1. a kind of urea cyclone mixer, including a cylinder, it is characterised in that
The both ends of the cylinder are open, and one end is as air inlet, and the other end is as gas outlet；
A Z-shaped baffle is equipped with cylinder, cylinder lumen is divided into ante-chamber and back cavity by the Z-shaped baffle；
Eddy flow part and antipriming pipe are equipped with cylinder, the eddy flow part and antipriming pipe are connected to the transverse part of the Z-shaped baffle；Rotation
Stream part is connected with antipriming pipe；Eddy flow part is located at the ante-chamber of cylinder, and antipriming pipe is located at the back cavity of cylinder；
The eddy flow part is equipped with swirl vane；Eddy flow part top connects nozzle, and the nozzle is stretched out from cylinder side face；
The tube wall of the antipriming pipe is equipped with multiple stomatas.
2. urea cyclone mixer as claimed in claim 1, it is characterised in that
Eddy flow part uses hemispherical end cap, and covering windowing in hemispherical end sets multiple swirl vanes.
3. urea cyclone mixer as claimed in claim 2, it is characterised in that
The louver angle of swirl vane is 45 °~60 °, and swirl vane covers uniformly distributed in hemispherical end.
4. urea cyclone mixer as claimed in claim 1, it is characterised in that
Eddy flow part uses cyclone pipe, and swirl vane is equipped with around cyclone pipe axis on cyclone pipe.
5. urea cyclone mixer as claimed in claim 1, it is characterised in that
In the ante-chamber of cylinder, the first vent gas treatment carrier is equipped with before eddy flow part.
6. urea cyclone mixer as claimed in claim 5, it is characterised in that
The first vent gas treatment carrier is grain catcher.
7. urea cyclone mixer as claimed in claim 1, it is characterised in that
In the back cavity of cylinder, the second vent gas treatment carrier is equipped with after antipriming pipe.
8. urea cyclone mixer as claimed in claim 7, it is characterised in that
The second vent gas treatment carrier is SCR carriers.
9. urea cyclone mixer as claimed in claim 1, it is characterised in that
The cylinder includes the first cylinder and the second cylinder being connected；In the second cylinder in the cylinder section of the first cylinder
The Z-shaped baffle, eddy flow part and antipriming pipe are set.
10. urea cyclone mixer as claimed in claim 1, it is characterised in that
Stomata on porous tube wall is evenly distributed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454587.3A CN108005763A (en) | 2017-12-28 | 2017-12-28 | urea cyclone mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454587.3A CN108005763A (en) | 2017-12-28 | 2017-12-28 | urea cyclone mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005763A true CN108005763A (en) | 2018-05-08 |
Family
ID=62061974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711454587.3A Pending CN108005763A (en) | 2017-12-28 | 2017-12-28 | urea cyclone mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979803A (en) * | 2018-07-25 | 2018-12-11 | 武汉水草能源科技研发中心(有限合伙) | Method and apparatus for mixing liquid and gas |
| CN111764989A (en) * | 2020-06-29 | 2020-10-13 | 东风商用车有限公司 | Efficient post-processing packaged SCR mixer system and processing method thereof |
| CN111764987A (en) * | 2020-06-29 | 2020-10-13 | 东风商用车有限公司 | Post-processing packaging SCR mixer system and processing method thereof |
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| EP0590699A1 (en) * | 1992-08-28 | 1994-04-06 | General Motors Corporation | Burner for heating exhaust gas |
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| CN106437982A (en) * | 2016-09-22 | 2017-02-22 | 无锡威孚力达催化净化器有限责任公司 | Shaft-inlet and shaft-outlet barrel type aftertreatment assembly |
| 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 |
| CN207761764U (en) * | 2017-12-28 | 2018-08-24 | 无锡锡创汽车环保有限公司 | urea cyclone mixer |
-
2017
- 2017-12-28 CN CN201711454587.3A patent/CN108005763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0590699A1 (en) * | 1992-08-28 | 1994-04-06 | General Motors Corporation | Burner for heating exhaust gas |
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| 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 |
| CN106437982A (en) * | 2016-09-22 | 2017-02-22 | 无锡威孚力达催化净化器有限责任公司 | Shaft-inlet and shaft-outlet barrel type aftertreatment assembly |
| CN207761764U (en) * | 2017-12-28 | 2018-08-24 | 无锡锡创汽车环保有限公司 | urea cyclone mixer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979803A (en) * | 2018-07-25 | 2018-12-11 | 武汉水草能源科技研发中心(有限合伙) | Method and apparatus for mixing liquid and gas |
| 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 |
| CN111764989A (en) * | 2020-06-29 | 2020-10-13 | 东风商用车有限公司 | Efficient post-processing packaged SCR mixer system and processing method thereof |
| CN111764987A (en) * | 2020-06-29 | 2020-10-13 | 东风商用车有限公司 | Post-processing packaging SCR mixer system and processing method thereof |
| CN111764987B (en) * | 2020-06-29 | 2023-10-13 | 东风商用车有限公司 | Post-treatment packaging SCR mixer system and treatment method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |
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| RJ01 | Rejection of invention patent application after publication |