CN108798852A - A kind of compact large-scale diesel engine exhaust gas processing device and method - Google Patents
A kind of compact large-scale diesel engine exhaust gas processing device and method Download PDFInfo
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- CN108798852A CN108798852A CN201810804132.8A CN201810804132A CN108798852A CN 108798852 A CN108798852 A CN 108798852A CN 201810804132 A CN201810804132 A CN 201810804132A CN 108798852 A CN108798852 A CN 108798852A
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
-
- 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
-
- 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
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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of compact large-scale diesel engine exhaust gas processing device and methods, including air intake assembly, DOC components, DPF components, electric hybrid module, SCR components and the exhaust noise silencing component being sequentially connected in series；The electric hybrid module includes hollow mixing tube, and the mixing tube is inserted through collector plate, and a part for the mixing tube is located at the side of collector plate, and another part is located at the other side of collector plate；The top of the mixing tube is equipped with swirl vane, and bottom is equipped at least one porthole window, and swirl vane and porthole window are located at the both sides of the collector plate；The side space of the collector plate is connected to the DPF components, and other side space is connected to the SCR components.Urea mixer and mixing tube, are arranged in reactor, compact-sized, disclosure satisfy that large-scale diesel engine realizes the demand of vent gas treatment.
Description
Technical field
The present invention relates to engine emission purification treatment technology field more particularly to a kind of compact large-sized diesel tail gas
Processing unit and method.
Background technology
Diesel engine is due to the advantage that has gasoline engine incomparable in terms of dynamic property, economy and reliability, especially
CO2 emission value is especially low, is widely applied, however the harm that exhaust pollution of diesel engines is brought is increasingly subject to people
Concern.The increasingly strict of national emission regulation promotes domestic diesel engine manufacturing enterprise to have to look for effective way to control and subtract
It discharges pollutants less, and national legislation clearly proposes PM (Particulate for 130-560kW non-rice habitats diesel engine at present
Matter), PN (Particulate Number) and NOx requirement, so, DPF (Diesel Particulate Filter) and
SCR (selective catalytic reduction) technology is current China's non-rice habitats large diesel engine PM/PN and NOx row
The unconventional and unrestrained optimal selection to discharging standards.
Diesel catalyst post-reaction treatment system is mainly by PM filter devices DPF system, NOx catalytic convention design SCR systems
System and control system composition.
DPF system is one of important component in exhaust treatment system, its quality will will have a direct impact on PM in tail gas
Emission performance mainly plays the key effect of PM in filtering tail gas.In general, containing a large amount of in diesel motor exhaust
Particulate material (soot) harmful substance needs to install DPF systems additional to remove the harmful substance in this diesel engine exhaust
System carries out particulate matter removal.But currently, it is limited by DPF self characters and manufacturing technology, for 400kW-560kW diesel oil
Machine, at present DPF specifications can not meet design requirement.
SCR system is another important component in exhaust treatment system, its quality will will have a direct impact in tail gas
NOx emission performance mainly plays the important function of NOx in removal tail gas.Currently, being catalyzed in sound-attenuating system in SCR, spraying system
Aqueous solution of urea is sprayed into mixer and mixing tube by nozzle into SCR system to be pyrolyzed again.Hydrolysis generates the process meeting of ammonia
A series of complex chemical reaction occurs, and along with chemical reaction, a variety of intermediate products, such as cyanuric acid are will produce, and can be attached
It on SCR mixers and mixing tube wall surface, forms calculus, be commonly called as crystallizing, for large-duty engine, NOx discharge is big, instead
In requisition for aqueous solution of urea it is more, it is apparent for the cooling-down effect of wall surface etc., need long pipe road carry out urea decomposition, if design
It is improper, it is easy to form calculus or NOx emission is not up to standard.
At present for vehicle device application, although DPF and SCR system have had application, for 400kW-560k heavy types
Diesel engine, is currently limited by the manufacturing technology of DPF and SCR system core component carrier, and full-size cannot meet at present
400kW-560kW large diesel engine applications, if considering series system arrangement (as shown in Figure 1) merely, it is super that it will cause back pressures
Height, it is economical to seriously affect diesel engine fuel oil, while series connection length can be caused longer, in the horizontal plane, reactor assembly arrangement
Critical constraints.If considering parallel way merely, while considering that urea decomposes the length needed, it will cause overall volume increasings
Greatly, on horizontally or vertically face, arrangement space is limited.Therefore, urgent need to resolve 400kW-560kW diesel engines DPF and SCR system
Design problem.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems, to provide a kind of compact large-scale diesel engine exhaust gas processing device
And method, it is compact-sized, it disclosure satisfy that large-scale diesel engine realizes the demand of vent gas treatment.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of compact large-scale diesel engine exhaust gas processing device, including be sequentially connected in series air intake assembly, DOC components, DPF groups
Part, electric hybrid module, SCR components and exhaust noise silencing component；
The electric hybrid module includes hollow mixing tube, and the mixing tube is inserted through collector plate, one of the mixing tube
Divide positioned at the side of collector plate, another part is located at the other side of collector plate；The top of the mixing tube is equipped with swirl vane, bottom
Portion is equipped at least one porthole window, and swirl vane and porthole window are located at the both sides of the collector plate；
The side space of the collector plate is connected to the DPF components, and other side space is connected to the SCR components.
It is equivalent to urea mixer and mixing tube, is arranged in reactor, realizes that air-flow is gone out by DPF components by collector plate
Collect into mixing tube after coming, swirl vane forms gas cyclone, is then mixed with the aqueous solution of urea of penetrating, accelerates urea
It decomposes, it is possible to reduce mixing length of tube is further reduced space.Mixed gas is entered by porthole window in electric hybrid module
In SCR components.
The top of the mixing tube is equipped with spray gun in the outside of mixing tube.
The DPF component internals include three independent identical DPF encapsulation units components, respectively the first DPF encapsulation
Unit block, the 2nd DPF encapsulation units component and the 3rd DPF encapsulation unit components；
DPF encapsulation unit components use clip attachment, are fixed on the front and back tube wall of DPF components by clip respectively
On.
The spray gun is fixed on the top of the mixing tube by spray gun seat.
The inside of the mixing tube lower part is additionally provided with secondary mixer, and the secondary mixer is located at the upper of the porthole window
Portion.It after aqueous solution of urea is decomposed to form ammonia, is uniformly mixed in mixing tube with exhaust gas, by the secondary mixing for mixing bottom of the tube
Device further realizes the mixing of ammonia and exhaust gas.
It is additionally provided with spoiler between the electric hybrid module and SCR components.
Before SCR components, by spoiler, realizes gaseous mixture being uniformly distributed before SCR components in parallel, meet SCR
The requirement of component ammonia uniform distribution, exhaust gas react under catalyst effect with ammonia, generate harmless nitrogen, lead to
It crosses tail pipe and enters air.
The collector plate is obliquely installed, and inclination angle is 45 ° -60 °.Can make air-flow smooth-going enters mixing tube.
The air intake assembly includes air inlet pipe, and the front end of the air inlet pipe is equipped with flange, and rear end is connect with drive end bearing bracket, described
Air inlet pipe is equipped with exhaust temperature sensor seat, and the drive end bearing bracket is connect by tube wall with cloth flowing plate.
Using a kind of processing method of compact large-scale diesel engine exhaust gas processing device, include the following steps：
Step 1, exhaust gas are evenly distributed in the front end face of DOC components by air intake assembly, exhaust gas in DOC components
Catalyst reaction；
Step 2, the gas come out from DOC components enter DPF components and are filtered, and filtered gas enters described mixed
The aqueous solution of urea gone out with lance ejection in seaming element imports in mixing tube under the action of swirl vane and mixes, completes pyrolysis
Hydrolysis generates ammonia, and the gas after reaction enters SCR components by porthole window；
Step 3, by the step 2 treated gas in SCR components, under the effect of the catalyst, ammonia with
NOx reacts, and completes NOx purification reactions, and the gas after reaction is discharged by exhaust noise silencing component in air.
In the step 1, exhaust gas and the catalyst reaction in DOC components eliminate the HC in exhaust gas, and adjust exhaust gas
NO and NO in middle NOx2Ratio.
In the step 2, further include that mixing tube completes mixed once reaction on top, the gas after reaction falls on mixing
Secondary hybrid reaction is completed in the lower part of pipe in the lower part of mixing tube.
Beneficial effects of the present invention：
Urea mixer and mixing tube, are arranged in reactor, are realized by collector plate and are converged after air-flow is come out by DPF components
Collection enters in mixing tube, and swirl vane forms gas cyclone, is then mixed with the aqueous solution of urea of penetrating, and urea is accelerated to decompose,
Mixing length of tube can be reduced, space is further reduced, it is compact-sized.
Description of the drawings
Fig. 1 is the tail gas catalyzed reaction treating device schematic diagram of non-rice habitats large-scale diesel engine in background of the present invention；
Fig. 2 is the schematic diagram of compact big-block engine exhaust gas processing device in the embodiment of the present invention；
Fig. 3 is the concrete structure schematic diagram of air intake assembly；
Fig. 4 is the structural schematic diagram of mixing tube；
Fig. 5 is the concrete structure schematic diagram of electric hybrid module；
Fig. 6 is DPF components and SCR component internal structural schematic diagrams.
Wherein, 1- air intake assemblies；2-DOC components；3-DPF components；4- electric hybrid modules；5-SCR components；6- exhaust noise silencing groups
Part；7- hair bands；8- differential pressure pickups；
1.1- flange；1.2- air inlet pipe；1.3- exhaust temperature sensor seats；1.4- drive end bearing bracket；1.5- cloth flowing plates；
The first DPF encapsulation unit components of 3.1-；The 2nd DPF encapsulation unit components of 3.2-；The 3rd DPF encapsulation unit groups of 3.3-
Part；
4.1- swirl vane；4.2- spray gun seat；4.3- spray gun；4.4- mixing tube；4.5 secondary mixer；4.6- point
Flow window；4.7- collector plate；4.8- spoiler；
The first SCR encapsulation unit components of 5.1-；The 2nd SCR encapsulation unit components of 5.2-.
Specific implementation mode
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
The present invention is to solve the problems, such as 400kW-560kW heavy-duty engine tail gas reaction treatments, and providing one kind can expire
The vent gas treatment reaction unit of sufficient reactor overall compact arrangement.
A kind of compact large-scale diesel engine exhaust gas processing device, as described in Figure 2, including be sequentially connected in series air intake assembly 1,
DOC components 2, DPF components 3, electric hybrid module 4, SCR components 5 and exhaust noise silencing component 6；
As illustrated in figures 4-5, the electric hybrid module includes hollow mixing tube 4.4, and the mixing tube 4.4 is inserted through inclination and sets
The collector plate 4.7 set, the top of the mixing tube 4.4 are located at the upper side of collector plate, and lower part is located at the downside of collector plate 4.7；
The top of the mixing tube 4.4 be equipped with swirl vane 4.1, bottom be equipped at least one porthole window 4.6, swirl vane 4.1 and point
Stream window 4.6 is located at the both sides of the collector plate；
The upside space of the collector plate 4.7 is connected to the DPF components, and other side space is connected to the SCR components.
The collector plate is obliquely installed, and inclination angle is 45 ° in the present embodiment.
The top of the mixing tube is equipped with spray gun 4.3 in the outside of mixing tube 4.4.The spray gun 4.3 passes through spray gun seat 4.2
It is fixed on the top of the mixing tube 4.4.
The inside of 4.4 lower part of the mixing tube is additionally provided with secondary mixer 4.5, and the secondary mixer is located at the shunting
The top of window 4.6.
Spoiler 4.8 is additionally provided between the electric hybrid module and SCR components.
As shown in figure 3, the air intake assembly includes air inlet pipe 1.2, the front end of the air inlet pipe 1.2 is equipped with flange 1.1, after
End connect with drive end bearing bracket 1.4, the air inlet pipe 1.2 equipped with exhaust temperature sensor seat 1.3, the drive end bearing bracket 1.4 by tube wall and
Cloth flowing plate 1.5 connects.
As shown in fig. 6, DPF components are arranged in parallel mode using more monomers, DPF component internals include three independent identical
DPF encapsulation unit components, respectively the first DPF encapsulation units component 3.1, the 2nd DPF encapsulation units component 3.2 and third
DPF encapsulation units component 3.3, can individually work, and improve the reliability of system work, one goes wrong wherein
In the case of system can also work.
DPF encapsulation unit components use clip attachment, are fixed on the front and back tube wall of DPF components 3 by clip 7 respectively
On, DPF can be met and remove deashing function.
The front and back of DPF components 3 is equipped with differential pressure pickup 8, tests end pressure before and after DPF.
As shown in fig. 6, SCR component internals also include three independent identical SCR encapsulation units components, respectively first
SCR encapsulation units component 5.1, the 2nd SCR encapsulation units component 5.2 and the 3rd SCR encapsulation unit components.
DPF components and SCR components are arranged in parallel using more monomers, and DPF and SCR volume are calculated according to diesel engine discharge capacity
Design, while different specification size can be selected according to different engine displacement, meet certain power bracket intrinsic motivation demand.Together
When in order to meet DPF remove deashing function, DPF system is designed to clamp connection mode.
Using a kind of processing method of compact large-scale diesel engine exhaust gas processing device, including：
What the compact large-scale diesel engine exhaust gas processing device of the present invention came out by flange 1.1 and from engine supercharger
Exhaust pipe is connected, and the tail gas containing exhaust contaminants such as PM and NOx enters the exhaust gas processing device by air intake assembly 1, gives up
Gas is made by air intake assembly (being made of flange 1.1, air inlet pipe 1.2, exhaust temperature sensor seat 1.3, drive end bearing bracket 1.4, cloth flowing plate 1.5)
It obtains exhaust gas and is evenly distributed in 2 front end face of DOC components, by catalyst reaction in exhaust gas and DOC components 2, eliminate in exhaust gas
The substances such as HC, and adjust in exhaust gas NO and NO in NOx2Ratio；
Then exhaust gas enters in DPF components 3, and the PM in exhaust gas is filtered under the effect of DPF components 3, stays in DPF DPF
In component 3, the purification of PM is completed, subsequently into the back cavity of DPF DPF components 3, in electric hybrid module 4 (by swirl vane 4.1, spray
Gun platform 4.2, spray gun 4.3, mixing tube 4.4, secondary mixer 4.5, porthole window 4.6, collector plate 4.7, spoiler 4.8) effect under,
After 4.7 water conservancy diversion of collector plate, mixing tube 4.4 collects air-flow in being entered by rotating vane 4.1, and is ejected with spray gun 4.3
Aqueous solution of urea effect, under the cyclonic action of 4.4 forward spin flow blade of mixing tube, complete aqueous solution of urea be pyrolyzed hydrolysis
Ammonia is generated afterwards to complete to be pre-mixed with exhaust gas, into 4.4 lower part of mixing tube, is acted in 4.4 lower part secondary mixer 4.5 of mixing tube
Under, it completes ammonia and is mixed with the secondary of exhaust gas；
SCR components 5 are entered by mixing tube side porthole window 4.6 by secondary mixed air-flow, in the work of spoiler 4.8
Under, gaseous mixture is evenly distributed on the front end of SCR components 5, and under the effect of the catalyst, ammonia is reacted with NOx, and it is net to complete NOx
Change reaction, tail gas is discharged by exhaust noise silencing component 6 in air.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of compact large-scale diesel engine exhaust gas processing device, characterized in that including be sequentially connected in series air intake assembly, DOC groups
Part, DPF components, electric hybrid module, SCR components and exhaust noise silencing component；
The electric hybrid module includes hollow mixing tube, and the mixing tube is inserted through collector plate, a part of position of the mixing tube
In the side of collector plate, another part is located at the other side of collector plate；The top of the mixing tube is equipped with swirl vane, and bottom is set
There are at least one porthole window, swirl vane and porthole window to be located at the both sides of the collector plate；
The side space of the collector plate is connected to the DPF components, and other side space is connected to the SCR components；
The top of the mixing tube is equipped with spray gun in the outside of mixing tube.
2. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1, characterized in that in the DPF components
Portion includes three independent identical DPF encapsulation units components, and respectively the first DPF encapsulation units component, the 2nd DPF encapsulation are single
First component and the 3rd DPF encapsulation unit components；
DPF encapsulation unit components use clip attachment, are fixed on the front and back tube wall of DPF components by clip respectively.
3. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1, characterized in that the spray gun passes through spray
Gun platform is fixed on the top of the mixing tube.
4. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1, characterized in that the mixing tube lower part
Inside be additionally provided with secondary mixer, the secondary mixer is located at the top of the porthole window.
5. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1, characterized in that the electric hybrid module and
It is additionally provided with spoiler between SCR components.
6. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1-5 any one, characterized in that described
Collector plate is obliquely installed, and inclination angle is 45 ° -60 °.
7. a kind of compact large-scale diesel engine exhaust gas processing device as described in claim 1, characterized in that the air intake assembly packet
Air inlet pipe is included, the front end of the air inlet pipe is equipped with flange, and rear end is connect with drive end bearing bracket, and the air inlet pipe is equipped with exhaust temperature sensor
Seat, the drive end bearing bracket are connect by tube wall with cloth flowing plate.
8. using a kind of processing method of compact large-scale diesel engine exhaust gas processing device described in claim 2, characterized in that packet
Include following steps：
Step 1, exhaust gas are evenly distributed in the front end face of DOC components, exhaust gas and the catalysis in DOC components by air intake assembly
Agent is reacted；
Step 2, the gas come out from DOC components enter DPF components and are filtered, and filtered gas enters the mixing group
The aqueous solution of urea gone out with lance ejection in part is imported in mixing tube under the action of swirl vane and is mixed, and completes pyrolysis hydrolysis
Reaction generates ammonia, and the gas after reaction enters SCR components by porthole window；
Step 3, by the step 2 treated gas in SCR components, under the effect of the catalyst, ammonia is anti-with NOx
It answers, completes NOx purification reactions, the gas after reaction is discharged by exhaust noise silencing component in air.
9. processing method as claimed in claim 8, characterized in that in the step 1, exhaust gas and the catalyst in DOC components
Reaction, eliminates the HC in exhaust gas, and adjusts in exhaust gas NO and NO in NOx2Ratio.
10. processing method as claimed in claim 8, characterized in that in the step 2, further include, mixing tube is complete on top
It is reacted at mixed once, the gas after reaction falls on the lower part of mixing tube, and secondary hybrid reaction is completed in the lower part of mixing tube.
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| CN201810804132.8A CN108798852A (en) | 2018-07-20 | 2018-07-20 | A kind of compact large-scale diesel engine exhaust gas processing device and method |
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| CN201810804132.8A CN108798852A (en) | 2018-07-20 | 2018-07-20 | A kind of compact large-scale diesel engine exhaust gas processing device and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268114A (en) * | 2018-11-21 | 2019-01-25 | 苏州国方汽车电子有限公司 | A kind of flow mixer for SCR system exhaust aftertreatment |
| CN110848004A (en) * | 2019-12-19 | 2020-02-28 | 无锡亿利环保科技有限公司 | Multistage parallel SCR system |
| CN112814770A (en) * | 2020-12-31 | 2021-05-18 | 潍柴动力股份有限公司 | Uniformity evaluation method and device of parallel SCR system |
| CN112922706A (en) * | 2021-04-06 | 2021-06-08 | 宜兴市锦龙陶瓷有限公司 | Honeycomb ceramic sintering device for thin-wall diesel engine tail gas purification and use method thereof |
| FR3111664A1 (en) * | 2020-06-19 | 2021-12-24 | Faurecia Systemes D'echappement | Exhaust gas reducer mixer |
| WO2022200494A1 (en) * | 2021-03-26 | 2022-09-29 | Dinex A/S | Compact evaporation and mixing device |
-
2018
- 2018-07-20 CN CN201810804132.8A patent/CN108798852A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268114A (en) * | 2018-11-21 | 2019-01-25 | 苏州国方汽车电子有限公司 | A kind of flow mixer for SCR system exhaust aftertreatment |
| CN110848004A (en) * | 2019-12-19 | 2020-02-28 | 无锡亿利环保科技有限公司 | Multistage parallel SCR system |
| CN110848004B (en) * | 2019-12-19 | 2024-06-18 | 无锡亿利环保科技有限公司 | Multistage parallel SCR system |
| FR3111664A1 (en) * | 2020-06-19 | 2021-12-24 | Faurecia Systemes D'echappement | Exhaust gas reducer mixer |
| CN112814770A (en) * | 2020-12-31 | 2021-05-18 | 潍柴动力股份有限公司 | Uniformity evaluation method and device of parallel SCR system |
| WO2022200494A1 (en) * | 2021-03-26 | 2022-09-29 | Dinex A/S | Compact evaporation and mixing device |
| CN112922706A (en) * | 2021-04-06 | 2021-06-08 | 宜兴市锦龙陶瓷有限公司 | Honeycomb ceramic sintering device for thin-wall diesel engine tail gas purification and use method thereof |
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