CN108757125A - A kind of improved selective catalytic reduction device suitable for boat diesel engine - Google Patents
A kind of improved selective catalytic reduction device suitable for boat diesel engine Download PDFInfo
- Publication number
- CN108757125A CN108757125A CN201810629899.1A CN201810629899A CN108757125A CN 108757125 A CN108757125 A CN 108757125A CN 201810629899 A CN201810629899 A CN 201810629899A CN 108757125 A CN108757125 A CN 108757125A
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- Prior art keywords
- diesel engine
- urea
- air inlet
- catalytic reduction
- selective catalytic
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- 238000010531 catalytic reduction reaction Methods 0.000 title claims abstract description 26
- 239000004202 carbamide Substances 0.000 claims abstract description 53
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 13
- 239000008246 gaseous mixture Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 6
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000002912 waste gas Substances 0.000 description 7
- 229910052720 vanadium Inorganic materials 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
-
- 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
- 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
-
- 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
Landscapes
- 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)
- Ceramic Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of improved selective catalytic reduction devices suitable for boat diesel engine, which is characterized in that including air inlet pipe, static mixer, bend pipe and SCR reactors；The exhaust pipe of the air inlet pipe lower end and diesel engine connects, and the air inlet pipe upper end is connect with static mixer lower end, and the static mixer upper end is connect by bend pipe with SCR reactors；It is provided with urea nozzle on the air inlet pipe side wall；The air inlet pipe is internally provided with rotating vane；The flow deflector with radian with bend pipe is provided in the bend pipe；The SCR reactors are in tubular type structure, are axially inside provided with catalyst carrier.The present invention improves the mixing uniformity of gaseous mixture and aqueous solution of urea, reduces urea droplets and accumulates crystallization in the components such as exhaust pipe, improves reaction efficiency, reduce installation difficulty so that device arranges more convenient and quicker.
Description
Technical field
The present invention relates to ship pollution discharge processing technology fields more particularly to a kind of improved suitable for boat diesel engine
Selective catalytic reduction device.
Background technology
Currently, ship has become China coast, the along the river regional main source of atmospheric pollution.It is supervised according to national environmental protection portion
The data at control center, the ship in Chinese Port berthing in 2013 discharge 58.8 ten thousand tons of sulfur dioxide altogether, and it is total to account for about whole nation discharge
The 8.4% of amount, 27.8 ten thousand tons of yard craft nitrogen oxide emission accounts for about the 11.3% of national total emission volumn.International Maritime group
Knit IMO promulgations《MARPOL 73/78》Pact, the ship emission request from 1 day January in 2016 in emission control area reach
To III discharge standards of Tier, stringent limitation is carried out to harmful components discharge in marine exhaust, therefore carry out ship atmosphere pollution
Control technology is extremely urgent.According to current technology level, the emission-reduction technology for relying solely on diesel engine itself has been difficult to meet
The standard of Tier III, this means that diesel engine must realize this target by post-processing technology.In NOx post-processing technologies
In, SCR is acknowledged as most ripe, effective measures, has obtained being widely recognized as international community.
Will generally use urea cabinet stored urea aqueous solution in SCR system peculiar to vessel, SCR reactors used in ship and
Urea cabinet product is larger, it is reported that, SCR system size is required for larger space with diesel engine, and on ship can be diesel engine
The space provided with SCR reactors is extremely limited, and which results in the difficult to install of SCR system, greatly limit SCR system
Using.In addition, aqueous solution of urea is directly sprayed into mixer by urea pump, the aqueous solution of urea of liquid enters mixer in exhaust
Under high temperature action, then mix with exhaust gas, it is small with exhaust gas contact area after being sprayed into due to the aqueous solution of urea of liquid, that is to say, that urine
Plain aqueous solution and exhaust gas contact are insufficient, and mixing is uneven, cause vaporization incomplete, and then it is to influence denitration to reduce reaction efficiency
Efficiency.Furthermore the urea droplets that left behind accumulate crystallization in the components such as exhaust pipe, and perishable component causes production cost
It improves.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of improved suitable for marine diesel
The selective catalytic reduction device of machine, which raises the mixing uniformities of gaseous mixture and aqueous solution of urea, reduce urea solution
It drops in and accumulates crystallization in the components such as exhaust pipe, and structure improvement is carried out to SCR reactors and is conducive to gaseous mixture in catalyst surface
Be uniformly distributed, reaction efficiency, and the SCR reactors of small diameter can be improved, installation difficulty can be reduced so that device
Arrange more convenient and quicker.
To achieve the above object, the present invention uses following technical proposals：
A kind of improved selective catalytic reduction device suitable for boat diesel engine, including air inlet pipe, static mixing
Device, bend pipe and SCR reactors；Wherein
The exhaust pipe of air inlet pipe lower end and diesel engine connects, and air inlet pipe upper end is connect with static mixer lower end, static
Mixer upper end is connect by bend pipe with SCR reactors；
It is provided with urea nozzle on the air inlet pipe side wall；The air inlet pipe is internally provided with rotating vane；
The flow deflector with radian with bend pipe is provided in the bend pipe；
The SCR reactors are in tubular type structure, are axially inside provided with catalyst carrier.
Preferably, it includes wind turbine that the SCR reactor configurations, which have cleaning systems, the cleaning systems, and the wind turbine passes through
Pipeline is connected with catalyst carrier.
Preferably, the elbow internal wall is fixed with holder, and the flow deflector is fixed with holder, the flow deflector have it is multigroup,
Such as 7 groups with radian be arranged side by side.
Preferably, the flow deflector both ends are each provided with an extended segment, to uniform water conservancy diversion gaseous mixture.
Preferably, the air inlet inside pipe wall is fixed with support shaft, and the rotating vane is rotatably mounted on support shaft,
The rotating vane has multigroup, such as is arranged above and below 3 groups along support shaft.
Preferably, the urea nozzle is connected by pipeline with urea cabinet, is furnished between the urea nozzle and urea cabinet
Urea control unit, the urea control unit include the urea pump being arranged on pipeline.
Preferably, the catalyst carrier has multigroup and is axially arranged in juxtaposition along SCR reactor tubular type structures, such as 5
Group.
Preferably, the catalyst carrier Ceramics material, high temperature resistant, and have for selective catalytic reduction reaction
There is certain facilitation.
The improved selective catalytic reduction device suitable for boat diesel engine provided by the invention, rotating vane and leads
The installation of flow uses, and diesel engine vent gas can be made to be more fully mixed, uniformly with aqueous solution of urea, make gaseous mixture relatively evenly
It is distributed in catalyst everywhere, is conducive to the progress of catalytic reduction reaction, to improve the denitration efficiency of SCR system of diesel engine, and
And reduce the urea crystals that left behind on the exhaust components such as inside pipe wall and urea nozzle to a certain extent, reduce urea
To the corrosion rate of pipe fitting etc., and then the service life of whole device is improved, reduces production cost；SCR reactor pipes
The installation of type structure and multi-layer catalyst carrier uses, and can both make NOx and NH3It is evenly distributed on catalyst everywhere, ensures to urge
Change being normally carried out for reduction reaction, and pipe arrangement can be made more convenient and flexible, while reducing SCR reactors to installation
The requirement in space.
Description of the drawings
Fig. 1 is the structural schematic diagram of the improved selective catalytic reduction device suitable for boat diesel engine of the invention.
Wherein：1- urea cabinets；2- urea pumps；3- urea nozzles；4- air inlet pipe；5- rotating vanes；6- static mixers；7-
Bend pipe；8- flow deflectors；9-SCR reactors；10- catalyst carriers；11- catalytic component based on vanadium；12- wind turbines.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of improved selective catalytic reduction device suitable for boat diesel engine, including air inlet pipe
4, static mixer 6, bend pipe 7 and SCR reactors 9；Wherein
The exhaust pipe of 4 lower end of air inlet pipe and diesel engine connects, and 4 upper end of air inlet pipe is connect with 6 lower end of static mixer, quiet
6 upper end of state mixer is connect by bend pipe 7 with SCR reactors 9；
It is provided with urea nozzle 3 on 4 side wall of the air inlet pipe；The air inlet pipe 4 is internally provided with rotating vane 5；
The flow deflector 8 with radian with bend pipe 7 is provided in the bend pipe 7；
The SCR reactors 9 are in tubular type structure, are axially inside provided with catalyst carrier 10.
Preferably, the SCR reactors 9 are configured with cleaning systems, and the cleaning systems include wind turbine 12, the wind turbine 12
It is connected with catalyst carrier 10 by pipeline.
Preferably, 7 inner wall of the bend pipe is fixed with holder, and the flow deflector 8 is fixed with holder, and the flow deflector 8 has more
Group, for example, 7 groups with radian be arranged side by side.
Preferably, 8 both ends of the flow deflector are each provided with an extended segment, to water conservancy diversion gaseous mixture.
Preferably, 4 inner wall of the air inlet pipe is fixed with support shaft, and the rotating vane 5 is rotatably mounted to support shaft
On, the rotating vane 5 has multigroup, such as is arranged above and below 3 groups along support shaft.
Preferably, the urea nozzle 3 is connected by pipeline with urea cabinet 1, between the urea nozzle 3 and urea cabinet 1
Equipped with urea control unit, the urea control unit includes the urea pump 2 being arranged on pipeline.
Preferably, the catalyst carrier 10 has multigroup and is axially arranged in juxtaposition along 9 tubular type structure of SCR reactors, example
Such as 5 groups.
Preferably, 10 Ceramics material of the catalyst carrier, high temperature resistant, and for selective catalytic reduction reaction
With certain facilitation.
The improved selective catalytic reduction device suitable for boat diesel engine provided by the invention, when work：
The aqueous solution of urea from urea cabinet 1 is from urea under the action of being urea pump 2 under the control of urea control unit
Nozzle 3 sprays into air inlet pipe 4, and the high-temp waste gas from Diesel Engine Exhaust Pipe is discharged into air inlet pipe 4 rear gas from air inlet pipe lower end
Rotating vane 5 can be driven to rotate for mobilization force so that high-temp waste gas forms vortex, the at this time injection of aqueous solution of urea in air inlet pipe 4
The direction of flow of direction and high-temp waste gas is substantially in 90 degree of distributions, can come into full contact with mixing, that is, realize the premixing of the two,
This, the generation of vortex can reduce accumulation crystallization of the aqueous solution of urea on the components such as air inlet pipe to a certain extent, reduce residual
The aqueous solution of urea stayed improves the service life of whole device to the corrosion rates of the components such as air inlet pipe, reduces life
Produce cost；
Aqueous solution of urea hydrolyzes under the conduction of heat of high-temp waste gas when flowing through static mixer 6, generates NH3；
So that the level of disruption of high-temp waste gas is reinforced in the special structural units that this mixer has, and then makes in high-temp waste gas
NOx and NH3Gas mutually mixes；
Mix waste gas is reached at bend pipe 7 after static mixer 6 and is reached in SCR reactors 9 by flow deflector 8,
Flow deflector 8 at this bend pipe 7 may make mixed airflow through when be evenly distributed, flow velocity it is gentle, and the extended segment at 8 both ends of flow deflector rise
To drainage and the effect flowed admittedly, i.e., the multigroup flow deflector 8 being arranged at bend pipe 7 can shunt gaseous mixture, make mixing
Gas more uniform can be distributed in everywhere in tubular type feature cross-section when reaching in SCR reactors 9；
Even into the gaseous mixture in SCR reactors 9 and the catalytic component based on vanadium in cellular arrangement in catalyst carrier 10
11 contacts carry out catalytic reduction reactions, and multigroup catalyst carrier 10 is along the axial cloth arranged side by side of 9 tubular type structure of SCR reactors herein
It sets so that gaseous mixture is more fully contacted with catalytic component based on vanadium, ensures that catalytic reduction reaction is more thorough, here, anti-reducing SCR
On the basis of the diameter for answering 9 tubular type structure of device, by catalyst carrier 10 by 3 groups of increases be 5 groups, so that it is guaranteed that by gaseous mixture
NOx removal is clean, prevents final exhaust pollution atmospheric environment；
When mixed airflow is through SCR reactors 9, under (300 DEG C) effects of high temperature, it is catalyzed with the vanadium base in catalyst carrier 10
Agent 11 comes into full contact with generation catalytic reduction reaction, generates N2And water, reactor 9 is discharged with exhaust later, here, SCR reactors 9
Pipe arrangement can be made more convenient and flexible, together under the premise of ensureing NO_x Reduction by Effective efficiency in tubular type structure design
When reduce requirement of the SCR reactors to installation space；
Finally, in order to keep the cleaning of SCR reactors not to be contaminated, cleaning systems is configured with to SCR reactors 9, can be determined
SCR reactors 9 are cleared up in phase operation, i.e., are blown by 12 compressed air of wind turbine and be adhered to SCR catalyst in reactor load
It is discharged with exhaust after flue dust on body 10.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term "upper", "lower", "inner", "outside"
It is to be based on the orientation or positional relationship shown in the drawings to set relationship, is merely for convenience of description of the present invention and simplification of the description, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
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 improved selective catalytic reduction device suitable for boat diesel engine, which is characterized in that including air inlet pipe,
Static mixer, bend pipe and SCR reactors；The exhaust pipe of the air inlet pipe lower end and diesel engine connects, the air inlet pipe upper end
It is connect with static mixer lower end, the static mixer upper end is connect by bend pipe with SCR reactors；The air inlet pipe side wall
On be provided with urea nozzle；The air inlet pipe is internally provided with rotating vane；It is provided in the bend pipe with bend pipe with radian
Flow deflector；The SCR reactors are in tubular type structure, are axially inside provided with catalyst carrier.
2. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
In the air inlet inside pipe wall is fixed with support shaft, and the rotating vane is rotatably mounted on support shaft.
3. the improved selective catalytic reduction device suitable for boat diesel engine as claimed in claim 2, feature exist
Have in, the rotating vane multigroup, is arranged above and below along support shaft.
4. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
In, the urea nozzle is connected by pipeline with urea cabinet, is furnished with urea control unit between the urea nozzle and urea cabinet,
The urea control unit includes the urea pump being arranged on pipeline.
5. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
In the elbow internal wall is fixed with holder, and the flow deflector is fixed with holder.
6. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
Have in, the flow deflector multigroup, is arranged side by side with radian.
7. the improved selective catalytic reduction device suitable for boat diesel engine as claimed in claim 6, feature exist
In the flow deflector both ends are each provided with an extended segment.
8. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
In the catalyst carrier has multigroup and is axially arranged in juxtaposition along SCR reactor tubular type structures.
9. the improved selective catalytic reduction device suitable for boat diesel engine as described in claim 1, feature exist
In the catalyst carrier Ceramics material.
10. such as the improved selective catalytic reduction device suitable for boat diesel engine of claim 1-9 any one of them,
It is characterized in that, it includes wind turbine that the SCR reactor configurations, which have cleaning systems, the cleaning systems, the wind turbine passes through pipeline
It is connected with catalyst carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629899.1A CN108757125A (en) | 2018-06-19 | 2018-06-19 | A kind of improved selective catalytic reduction device suitable for boat diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629899.1A CN108757125A (en) | 2018-06-19 | 2018-06-19 | A kind of improved selective catalytic reduction device suitable for boat diesel engine |
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| Publication Number | Publication Date |
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| CN108757125A true CN108757125A (en) | 2018-11-06 |
Family
ID=63979011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810629899.1A Pending CN108757125A (en) | 2018-06-19 | 2018-06-19 | A kind of improved selective catalytic reduction device suitable for boat diesel engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295981A (en) * | 2019-08-13 | 2019-10-01 | 中国船舶重工集团柴油机有限公司 | A kind of high pressure SCR system of efficient emission-reducing peculiar to vessel |
| CN110552774A (en) * | 2019-09-30 | 2019-12-10 | 中船澄西船舶修造有限公司 | Diesel engine exhaust system of wood chip ship |
| CN110578580A (en) * | 2019-08-30 | 2019-12-17 | 中船澄西船舶修造有限公司 | Arrangement structure in main engine SCR engine room for small and medium-sized ships |
| CN111677581A (en) * | 2020-06-23 | 2020-09-18 | 南通大学 | Airflow guiding device for SCR |
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| CN102094699A (en) * | 2010-12-15 | 2011-06-15 | 杭州银轮科技有限公司 | Static mixer for diesel engine urea selective catalytic reduction device |
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| CN1717275A (en) * | 2002-11-26 | 2006-01-04 | 阿尔斯托姆科技有限公司 | Emission treatment system |
| CN101922333A (en) * | 2010-08-17 | 2010-12-22 | 王德荣 | Ship selective catalytic reduction emission-reducing system |
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Address after: 266520 No. 501 Lijiang East Road, Huangdao District, Qingdao, Shandong Applicant after: China Shipbuilding Industry Corporation Diesel ENGINE Co.,Ltd. Address before: 266520 No. 501 Lijiang East Road, Huangdao District, Qingdao, Shandong Applicant before: CHINA SHIPBUILDING INDUSTRY CORPORATION DIESEL ENGINE Co.,Ltd. |
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Application publication date: 20181106 |