CN110374726A - Double-cyclone urea mixing device - Google Patents
Double-cyclone urea mixing device Download PDFInfo
- Publication number
- CN110374726A CN110374726A CN201910781618.9A CN201910781618A CN110374726A CN 110374726 A CN110374726 A CN 110374726A CN 201910781618 A CN201910781618 A CN 201910781618A CN 110374726 A CN110374726 A CN 110374726A
- Authority
- CN
- China
- Prior art keywords
- eddy flow
- partition
- fixed
- mixing tube
- swirl
- 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
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
- F01N3/18—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
- 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
Abstract
The present invention relates to a kind of double-cyclone urea mixing devices, injection pedestal is fixed on the barrel of mixing drum, preceding eddy flow partition and rear eddy flow partition are fixed in mixing drum, the front end of the swirl mixing tube is mutually fixed with preceding eddy flow partition, and the rear end of swirl mixing tube is mutually fixed with rear eddy flow partition；Whirl hole before offering on preceding eddy flow partition between swirl mixing tube and mixing drum corresponds to eddy flow ear before being fixed on the front face of the preceding eddy flow partition of each preceding eddy flow hole site；Rear whirl hole is offered on rear eddy flow partition between swirl mixing tube and mixing drum, is fixed with rear eddy flow ear on the front face of the rear eddy flow partition of corresponding each rear whirl hole position；Flow-guiding mouth is offered on swirl mixing tube, is fixed with distributing fin in the outer circle of the swirl mixing tube of corresponding flow-guiding mouth position.Structure of the invention is ingenious, efficient, is sufficiently mixed ammonia and tail gas, and save incorporation time, and gas mixing efficiency is greatly improved, and guarantees vent gas treatment effect.
Description
Technical field
The present invention relates to a kind of double-cyclone urea mixing devices, and the invention belongs to tail gas treatment system of diesel engine equipment and technologies
Field.
Background technique
Increasingly strict with diesel engine emissions regulations, exhaust aftertreatment technology is the technical measures that must be used.And SCR
It can satisfy state IV and state's V discharge standard, the basic principle of SCR is by urea injection system (being commonly called as urea pump) by 32.5%
It sprays into exhaust pipe after the aqueous solution of urea atomization of concentration and is mixed with motor exhaust, aqueous solution of urea is anti-by pyrolysis and hydrolysis
Ammonia (NH should be generated3), ammonia converts oxynitrides (NOx) harmful in diesel engine vent gas under the effect of the catalyst
Harmless nitrogen (N2) and water, the top priority of motor exhaust processing technique SCR route is to be sufficiently mixed tail gas with ammonia mist
Concurrent biochemical reaction, while guaranteeing sufficient temp before entering catalyst.SCR in the prior art is in processing vehicle exhaust mistake
There are problems that tail gas and ammonia undercompounding in journey, to cause vent gas treatment incomplete.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, provide a kind of structure is simple, can make ammonia and
The double-cyclone urine that tail gas is sufficiently mixed, saves incorporation time, greatlys improve gas mixing efficiency and guarantee vent gas treatment effect
Plain mixing arrangement.
According to technical solution provided by the invention, the double-cyclone urea mixing device, including mixing drum, preceding eddy flow every
Plate, injection pedestal, rear eddy flow partition and swirl mixing tube；Injection pedestal is fixed on the barrel of mixing drum, in mixing drum
It is fixed with preceding eddy flow partition and rear eddy flow partition in vivo, the front end of the swirl mixing tube is mutually fixed with preceding eddy flow partition, rotation
The rear end of stream mixing tube is mutually fixed with rear eddy flow partition；
Whirl hole before being offered on preceding eddy flow partition between swirl mixing tube and mixing drum, in corresponding each preceding whirl hole
Eddy flow ear before being fixed on the front face of the preceding eddy flow partition of position；
Whirl hole after being offered on rear eddy flow partition between swirl mixing tube and mixing drum, in corresponding each rear whirl hole
Rear eddy flow ear is fixed on the front face of the rear eddy flow partition of position；
Flow-guiding mouth is offered on swirl mixing tube, is fixed with water conservancy diversion in the outer circle of the swirl mixing tube of corresponding flow-guiding mouth position
Fin.
The number of the preceding eddy flow ear is 5 ~ 30, and preceding eddy flow ear is uniformly distributed around the center of circle of preceding eddy flow partition.
The number of eddy flow ear is 5 ~ 30 after described, and rear eddy flow ear is uniformly distributed around the center of circle of rear eddy flow partition.
The length of the distributing fin is 20 ~ 80mm, 7 ~ 20mm of width of distributing fin, distributing fin and swirl mixing tube
The angle degree of outer circle be 20 ~ 60 °, the number of distributing fin is 5 ~ 30, and distributing fin is in the outer circle of swirl mixing tube
It is uniformly distributed on circumferencial direction.
The bright clever structure of the present invention, efficiently, it is simple, ammonia and tail gas can be made to be sufficiently mixed, and mixing can be saved
Time greatly improves gas mixing efficiency, ensure that vent gas treatment effect.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Double-cyclone urea mixing device of the invention, including mixing drum 1, preceding eddy flow partition 2, injection pedestal 3, rear eddy flow
Partition 4 and swirl mixing tube 6；It is fixed with injection pedestal 3 on the barrel of mixing drum 1, is revolved before being fixed in mixing drum 1
Partition 2 and rear eddy flow partition 4 are flowed, the front end of the swirl mixing tube 6 is fixed with preceding 2 phase of eddy flow partition, swirl mixing tube 6
Rear end is fixed with rear 4 phase of eddy flow partition；
Whirl hole 21 before being offered on preceding eddy flow partition 2 between swirl mixing tube 6 and mixing drum 1, before corresponding to each
Eddy flow ear 22 before being fixed on the front face of the preceding eddy flow partition 2 of 21 position of whirl hole；
Whirl hole 41 after being offered on rear eddy flow partition 4 between swirl mixing tube 6 and mixing drum 1, after corresponding to each
Rear eddy flow ear 42 is fixed on the front face of the rear eddy flow partition 4 of 41 position of whirl hole；
Flow-guiding mouth 61 is offered on swirl mixing tube 6, it is fixed in the outer circle of the swirl mixing tube 6 of corresponding 61 position of flow-guiding mouth
There is distributing fin 62.
The number of the preceding eddy flow ear 22 is 5 ~ 30, and preceding eddy flow ear 22 is uniformly distributed around the center of circle of preceding eddy flow partition 2.
The number of eddy flow ear 42 is 5 ~ 30 after described, and rear eddy flow ear 42 is uniformly distributed around the center of circle of rear eddy flow partition 4.
The length of the distributing fin 62 is 20 ~ 80mm, 7 ~ 20mm of width of distributing fin 62, distributing fin 62 and eddy flow
The angle degree of the outer circle of mixing tube 6 is 20 ~ 60 °, and the number of distributing fin 62 is 5 ~ 30, and distributing fin 62 is mixed in eddy flow
It closes uniformly distributed on the outer circle circumferencial direction of pipe 6.
In the present invention, space before preceding eddy flow partition 2 constitutes front cavity 8, preceding eddy flow partition 2 and rear eddy flow partition 4 it
Between space constitute middle chamber 7, the space after rear eddy flow partition 4 constitutes rear chamber 5.
When specifically used, front cavity 8 is connected with the exhaust pipe of automobile engine, the tail gas of automobile engine is through entering
Front cavity 8 is rotated by the disturbance of the preceding eddy flow ear 22 on preceding eddy flow partition 2.Urea is by being installed on injection pedestal 3
Urea nozzle enter in middle chamber 7 and mixed with tail gas, a part of air-flow mixes in middle chamber 7, and a part of air-flow leads to
Cross flow-guiding mouth 61 and enter in swirl mixing tube 6 and further mix, mixed gas in middle chamber 7 by mixing, then after passing through
The disturbance of rear eddy flow ear 42 on eddy flow partition 4, rotates, mixes mixed gas adequately, be then fed into back cavity
Catalyst carrier after body 5.
Claims (4)
1. a kind of double-cyclone urea mixing device, including mixing drum (1), preceding eddy flow partition (2), injection pedestal (3), rear eddy flow
Partition (4) and swirl mixing tube (6)；It is characterized in that: being fixed with injection pedestal (3) on the barrel of mixing drum (1), mixing
Preceding eddy flow partition (2) and rear eddy flow partition (4), the front end of the swirl mixing tube (6) and preceding eddy flow are fixed in cylinder (1)
Partition (2) is mutually fixed, and the rear end of swirl mixing tube (6) is mutually fixed with rear eddy flow partition (4)；
Preceding whirl hole (21) are offered on preceding eddy flow partition (2) between swirl mixing tube (6) and mixing drum (1), right
Answer eddy flow ear (22) before being fixed on the front face of the preceding eddy flow partition (2) of each preceding whirl hole (21) position；
Rear whirl hole (41) are offered on rear eddy flow partition (4) between swirl mixing tube (6) and mixing drum (1), right
Rear eddy flow ear (42) is fixed on the front face of the rear eddy flow partition (4) of whirl hole (41) position after answering each；
Flow-guiding mouth (61) are offered on swirl mixing tube (6), are corresponding to the outer of the swirl mixing tube (6) of flow-guiding mouth (61) position
Distributing fin (62) are fixed on circle.
2. double-cyclone urea mixing device as described in claim 1, it is characterized in that: the number of the preceding eddy flow ear (22) be 5 ~
30, and preceding eddy flow ear (22) is uniformly distributed around the center of circle of preceding eddy flow partition (2).
3. double-cyclone urea mixing device as described in claim 1, it is characterized in that: after described the number of eddy flow ear (42) be 5 ~
30, and rear eddy flow ear (42) is uniformly distributed around the center of circle of rear eddy flow partition (4).
4. double-cyclone urea mixing device as described in claim 1, it is characterized in that: the length of the distributing fin (62) is 20
~ 80mm, 7 ~ 20mm of width of distributing fin (62), distributing fin (62) and the angle degree of the outer circle of swirl mixing tube (6) are
20 ~ 60 °, the number of distributing fin (62) is 5 ~ 30, and distributing fin (62) is in the outer circle circumferencial direction of swirl mixing tube (6)
It is upper uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781618.9A CN110374726A (en) | 2019-08-23 | 2019-08-23 | Double-cyclone urea mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781618.9A CN110374726A (en) | 2019-08-23 | 2019-08-23 | Double-cyclone urea mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110374726A true CN110374726A (en) | 2019-10-25 |
Family
ID=68260397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910781618.9A Pending CN110374726A (en) | 2019-08-23 | 2019-08-23 | Double-cyclone urea mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374726A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112107974A (en) * | 2020-09-16 | 2020-12-22 | 中科新天地（合肥）环保科技有限公司 | Injection type low-temperature plasma organic waste gas treatment device |
| WO2022037156A1 (en) * | 2020-08-18 | 2022-02-24 | 无锡威孚力达催化净化器有限责任公司 | Mixing apparatus having transversely arranged dual cyclone tubes |
| CN115030803A (en) * | 2022-06-28 | 2022-09-09 | 潍柴动力股份有限公司 | Mixer and diesel engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160361694A1 (en) * | 2015-06-12 | 2016-12-15 | Donaldson Company, Inc. | Exhaust treatment device |
| CN206016920U (en) * | 2016-08-30 | 2017-03-15 | 无锡威孚力达催化净化器有限责任公司 | Urea injection mixed cell for diesel engine vent gas post processing |
| CN107939490A (en) * | 2017-12-23 | 2018-04-20 | 无锡威孚力达催化净化器有限责任公司 | Axis post-processes double-cyclone urea mixing device into nozzle integrated form SCR |
| EP3392480A1 (en) * | 2017-04-21 | 2018-10-24 | Donaldson Company, Inc. | System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same |
| CN208534587U (en) * | 2018-05-28 | 2019-02-22 | 长城汽车股份有限公司 | Mixer, exhaust treatment system and tail gas treatment system of diesel engine |
| CN109414661A (en) * | 2017-06-06 | 2019-03-01 | 康明斯排放处理公司 | In the system and method for after-treatment system mixing exhaust and reducing agent |
| CN110017199A (en) * | 2014-02-25 | 2019-07-16 | 唐纳森公司 | Exhaust gas post-treatment device |
-
2019
- 2019-08-23 CN CN201910781618.9A patent/CN110374726A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017199A (en) * | 2014-02-25 | 2019-07-16 | 唐纳森公司 | Exhaust gas post-treatment device |
| US20160361694A1 (en) * | 2015-06-12 | 2016-12-15 | Donaldson Company, Inc. | Exhaust treatment device |
| CN206016920U (en) * | 2016-08-30 | 2017-03-15 | 无锡威孚力达催化净化器有限责任公司 | Urea injection mixed cell for diesel engine vent gas post processing |
| EP3392480A1 (en) * | 2017-04-21 | 2018-10-24 | Donaldson Company, Inc. | System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same |
| CN109414661A (en) * | 2017-06-06 | 2019-03-01 | 康明斯排放处理公司 | In the system and method for after-treatment system mixing exhaust and reducing agent |
| CN107939490A (en) * | 2017-12-23 | 2018-04-20 | 无锡威孚力达催化净化器有限责任公司 | Axis post-processes double-cyclone urea mixing device into nozzle integrated form SCR |
| CN208534587U (en) * | 2018-05-28 | 2019-02-22 | 长城汽车股份有限公司 | Mixer, exhaust treatment system and tail gas treatment system of diesel engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022037156A1 (en) * | 2020-08-18 | 2022-02-24 | 无锡威孚力达催化净化器有限责任公司 | Mixing apparatus having transversely arranged dual cyclone tubes |
| CN112107974A (en) * | 2020-09-16 | 2020-12-22 | 中科新天地（合肥）环保科技有限公司 | Injection type low-temperature plasma organic waste gas treatment device |
| CN112107974B (en) * | 2020-09-16 | 2021-11-05 | 中科新天地（合肥）环保科技有限公司 | Injection type low-temperature plasma organic waste gas treatment device |
| CN115030803A (en) * | 2022-06-28 | 2022-09-09 | 潍柴动力股份有限公司 | Mixer and diesel engine |
| CN115030803B (en) * | 2022-06-28 | 2023-12-15 | 潍柴动力股份有限公司 | Mixer and diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101416478B1 (en) | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine | |
| CN110374726A (en) | Double-cyclone urea mixing device | |
| CN206016920U (en) | Urea injection mixed cell for diesel engine vent gas post processing | |
| CN205190011U (en) | Cartridge SCR aftertreatment hybrid chamber | |
| CN208203387U (en) | A kind of post-processing assembly mixing arrangement | |
| CN206158826U (en) | SCR aftertreatment hybrid chamber structure of integrated nozzle | |
| CN110332034A (en) | It is vertically arranged SCR post-processing urea mixing device | |
| CN205190012U (en) | Cartridge SCR aftertreatment hybrid chamber | |
| CN205190013U (en) | SCR aftertreatment hybrid chamber | |
| CN107939490A (en) | Axis post-processes double-cyclone urea mixing device into nozzle integrated form SCR | |
| CN207686808U (en) | Side post-processes urea mixing device into nozzle integrated form SCR | |
| CN106014580A (en) | Novel urea crystallization-prevention exhaust pipe used for diesel engine SCR system | |
| CN210799103U (en) | Nozzle integrated SCR aftertreatment urea mixing arrangement | |
| CN206000602U (en) | A kind of diesel engine after treatment carbamide blender | |
| CN109854345B (en) | SCR aftertreatment urea mixing arrangement | |
| CN207686807U (en) | Vent gas treatment urea mixing device | |
| CN109162790B (en) | Compact type tail gas post-treatment system | |
| CN108150255B (en) | Treating fluid mixing device for vehicle tail gas treatment | |
| CN114278417B (en) | Exhaust aftertreatment urea mixing arrangement | |
| CN209637854U (en) | A kind of flow guiding type tail gas urea mixing device | |
| CN210343459U (en) | Vertical SCR (Selective catalytic reduction) aftertreatment urea mixing device | |
| CN107939489A (en) | Vent gas treatment urea mixing device | |
| CN212898663U (en) | Hybrid structure of exhaust aftertreatment system | |
| CN210714817U (en) | Box type mixer for diesel engine tail gas treatment | |
| CN210068278U (en) | SCR urea mixing pipe of large diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191025 |
|
| RJ01 | Rejection of invention patent application after publication |