CN208122918U - A kind of ship tail gas after-treatment device - Google Patents
A kind of ship tail gas after-treatment device Download PDFInfo
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- CN208122918U CN208122918U CN201820461768.2U CN201820461768U CN208122918U CN 208122918 U CN208122918 U CN 208122918U CN 201820461768 U CN201820461768 U CN 201820461768U CN 208122918 U CN208122918 U CN 208122918U
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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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- 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
- Y02T10/40—Engine management systems
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Abstract
The utility model relates to diesel engine vent gas post-processing technology fields, specifically disclose a kind of ship tail gas after-treatment device, wherein including：Oxidation catalyst device, selective catalytic reduction catalyst device and connecting tube, the oxidation catalyst device is connected with selective catalytic reduction device device by the connecting tube, the oxidizing catalytic device device is cylindrical structure, the selective catalytic reduction catalyst device is triangle case structure, the oxidation catalyst device is provided with inlet flange and air inlet pipe far from one end of the connecting tube, the inlet flange is located at one end of the air inlet pipe, the other end of the air inlet pipe is located in the oxidation catalyst device, the inlet flange and the air inlet pipe form component and connect the oxidation catalyst device with the exhaust outlet of marine engine group.Ship tail gas after-treatment device provided by the utility model can be improved catalyst converter oscillating load.
Description
Technical field
The utility model relates to diesel engine vent gas post-processing technology field more particularly to a kind of ship tail gas post-processing dresses
It sets.
Background technique
With the promulgation and execution of national non-rice habitats mechanical drain regulation, new discharge standard is dirty to marine engine tail gas
Dye object has extremely stringent standard, it is necessary to install after-treatment device additional to reach discharge standard.Current most common way is to make
Use selective catalytic reduction（SCR）Catalyst converter reduces NOx discharge, and SCR catalyst becomes the key for meeting non-rice habitats discharge
Equipment.However, existing marine engine or the matched SCR catalyst of cluster engine are mostly rectangular industrial catalyst, exist
The problems such as occupied space is big, catalyst is difficult to fixed, catalyst converter unbearable biggish oscillating load.
Therefore, how to provide a kind of ship tail gas after-treatment device that can be improved catalyst converter oscillating load becomes this field
Technical staff's technical problem urgently to be resolved.
Summary of the invention
The utility model aims to solve at least one of the technical problems existing in the prior art, after providing a kind of ship tail gas
Processing unit, to solve the problems of the prior art.
As the one aspect of the utility model, a kind of ship tail gas after-treatment device is provided, wherein the ship tail gas
After-treatment device includes：Oxidation catalyst device, selective catalytic reduction catalyst device and connecting tube, the oxidized form are urged
Change device device to connect with selective catalytic reduction device device by the connecting tube, the oxidizing catalytic device device is drum type brake
Structure, the selective catalytic reduction catalyst device are triangle case structure, and the oxidation catalyst device is far from institute
The one end for stating connecting tube is provided with inlet flange and air inlet pipe, and the inlet flange is located at one end of the air inlet pipe, institute
The other end for stating air inlet pipe is located in the oxidation catalyst device, and the inlet flange and the air inlet are tubular in groups
The oxidation catalyst device is connect by part with the exhaust outlet of marine engine group.
Preferably, the oxidation catalyst device includes DOC drive end bearing bracket, DOC cylinder and DOC rear end cap, DOC described
Body connects the DOC drive end bearing bracket close to one end of the air inlet pipe, and the DOC cylinder is connected close to one end of the connecting tube
First through hole is arranged on the DOC drive end bearing bracket for the DOC rear end cap, and the air inlet pipe is arranged through the first through hole, institute
It states and the second through-hole is set on DOC rear end cap, the connecting tube is connected to second through-hole.
Preferably, the oxidation catalyst device further includes catalyst carrier and DOC carrier liner, and the catalyst carries
Body is located at the DOC inner barrel, the DOC carrier liner be located at the catalyst carrier and the DOC cylinder inner wall it
Between.
Preferably, the selective catalytic reduction device include SCR drive end bearing bracket, SCR rear end cap, SCR triangle cabinet and
Escape pipe, the SCR triangle cabinet connect the SCR drive end bearing bracket, the SCR triangle case close to one end of the connecting tube
The other end of body connects the SCR rear end cap, is provided with third through-hole on the SCR drive end bearing bracket, the third through-hole with it is described
Connecting tube is connected to, and is provided with fourth hole on the SCR rear end cap, the fourth hole is connected to the escape pipe.
Preferably, the selective catalytic reduction device further includes being arranged in parallel in the intracorporal SCR of SCR triangle case
First assembly, the second component of SCR and SCR third component, the SCR first assembly, the second component of SCR and SCR third component energy
Enough common conversions and processing for completing NOx.
Preferably, the SCR first assembly includes the first cylinder of SCR and is catalyzed positioned at the intracorporal SCR of the SCR first
Agent and ASC catalyst, setting SCR carrier pads between the inner wall of the first cylinder of the SCR catalyst and the SCR, the SCR
Second component includes the second cylinder of SCR, and the SCR third component includes SCR third cylinder, first cylinder of SCR, SCR
Two cylinders and SCR third cylinder are arranged in parallel.
Preferably, the selective catalytic reduction device further includes SCR front baffle and SCR rear bulkhead, the SCR front baffle
The both ends of first cylinder of SCR, the second cylinder of SCR and SCR third cylinder are separately positioned on the SCR rear bulkhead, it is described
It is respectively provided in SCR front baffle and the SCR rear bulkhead there are three through-hole, first cylinder of SCR, the second cylinder of SCR and SCR the
The both ends of three cylinders are connected to the through-hole in the SCR front baffle and the SCR rear bulkhead respectively.
Preferably, the selective catalytic reduction device further includes NOx sensor, and the NOx sensor is arranged described
On escape pipe.
Preferably, the ship tail gas after-treatment device further includes that the gas being arranged in the connecting tube helps formula urea to spray
Mouth, connecting flange and temperature sensor, and the connecting hole pipe connecting with the connecting tube, the connecting hole pipe are located at the choosing
In selecting property catalyst reduction catalyst device device, the gas helps formula urea nozzle, connecting flange, temperature sensor, connecting hole pipe and company
Component is collectively formed in adapter tube, can complete the injection of aqueous solution of urea and the mixing of exhaust gas and aqueous solution of urea.
Ship tail gas after-treatment device provided by the utility model uses drum type brake, SCR device by prime DOC device
Convenient aboard ship to install using triangle case structure, compact-sized reliable, assembly versatility is good, with integrated parallel type structure
Design solves the problems, such as that rectangular industrial catalyst can not be resistance to compared with high vibration load, reduces the back pressure of after-treatment device while protecting
The mixed effect of urea is demonstrate,proved.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings：
Fig. 1 is the schematic perspective view of ship tail gas after-treatment device provided by the utility model.
Fig. 2 is the cross-sectional view of ship tail gas after-treatment device provided by the utility model.
Fig. 3 is the left view of ship tail gas after-treatment device provided by the utility model.
Fig. 4 is the structural schematic diagram of SCR component provided by the utility model.
Fig. 5 is the main view of ship tail gas after-treatment device provided by the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
It should be noted that oxidation catalyst（Diesel Oxidation Catalyst, abbreviation DOC）, selectively urge
Change reduction catalyst converter（Selective Catalytic Reduction, abbreviation SCR）.
As the one aspect of the utility model, a kind of ship tail gas after-treatment device is provided, wherein such as Fig. 1 and Fig. 2 institute
Show, the ship tail gas after-treatment device 100 includes：Oxidation catalyst device 110, selective catalytic reduction catalyst device
120 and connecting tube 9, the oxidation catalyst device 110 and selective catalytic reduction device device 120 pass through the connecting tube 9
Connection, the oxidizing catalytic device device 110 are cylindrical structure, and the selective catalytic reduction catalyst device 120 is three
Angular case structure, the oxidation catalyst device 110 far from one end of the connecting tube 9 be provided with inlet flange 1 and into
Stoma tube 2, the inlet flange 1 are located at one end of the air inlet pipe 2, and the other end of the air inlet pipe 2 is located at the oxygen
In change type catalytic converter device 110, the inlet flange 1 and the air inlet pipe 2 form component and fill the oxidation catalyst
110 are set to connect with the exhaust outlet of marine engine group.
Ship tail gas after-treatment device provided by the utility model uses drum type brake, SCR device by prime DOC device
Convenient aboard ship to install using triangle case structure, compact-sized reliable, assembly versatility is good, with integrated parallel type structure
Design solves the problems, such as that rectangular industrial catalyst can not be resistance to compared with high vibration load, reduces the back pressure of after-treatment device while protecting
The mixed effect of urea is demonstrate,proved.
Specifically, as shown in Fig. 2, the oxidation catalyst device 110 includes DOC drive end bearing bracket 3, DOC cylinder 4 and DOC
Rear end cap 7, the DOC cylinder 4 connect the DOC drive end bearing bracket 3 close to one end of the air inlet pipe 2, and the DOC cylinder 4 leans on
One end of the nearly connecting tube 9 connects the DOC rear end cap 7, and first through hole, the air inlet is arranged on the DOC drive end bearing bracket 3
Pipe 2 is arranged through the first through hole, and the second through-hole is arranged on the DOC rear end cap 7, and the connecting tube 9 is led to described second
Hole connection.
Specifically, the oxidation catalyst device 110 further include catalyst carrier 6 and DOC carrier liner 5, it is described to urge
Agent carrier 6 is located inside the DOC cylinder 4, DOC carrier liner 5 be located at the catalyst carrier 6 with it is DOC described
Between the inner wall of body 4.
Specifically, as shown in Figures 2 and 3, after the selective catalytic reduction device 120 is including SCR drive end bearing bracket 12, SCR
End cap 22, SCR triangle cabinet 15 and escape pipe 24, the SCR triangle cabinet 15 are connected close to one end of the connecting tube 9
The other end of the SCR drive end bearing bracket 12, the SCR triangle cabinet 15 connects the SCR rear end cap 22, the SCR drive end bearing bracket
Third through-hole is provided on 12, the third through-hole is connected to the connecting tube 9, is provided with the 4th on the SCR rear end cap 22
Through-hole, the fourth hole are connected to the escape pipe 24.
Specifically, as shown in figure 4, the selective catalytic reduction device 120 further includes being arranged in parallel in the SCR triangle
The intracorporal SCR first assembly of shape case, the second component of SCR and SCR third component, the SCR first assembly, the second component of SCR and
SCR third component can complete the conversion and processing of NOx jointly.
Specifically, as shown in Fig. 2, the SCR first assembly include the first cylinder of SCR 16 and be located at the SCR first
SCR catalyst 18 and ASC catalyst 19 in body 16, between the SCR catalyst 18 and the inner wall of the first cylinder of the SCR 16
SCR carrier is set and pads 17, second component of SCR includes the second cylinder of SCR, and the SCR third component includes SCR third cylinder
Body, first cylinder of SCR, the second cylinder of SCR and SCR third cylinder are arranged in parallel.
It should be noted that second cylinder of SCR and the SCR third cylinder are in Fig. 2 with 20 table of appended drawing reference
Show.
Specifically, as shown in figure 4, the selective catalytic reduction device 120 further include after SCR front baffle 14 and SCR every
Plate 21, the SCR front baffle 14 and the SCR rear bulkhead 21 are separately positioned on first cylinder of SCR 16, the second cylinder of SCR
It with the both ends of SCR third cylinder, is respectively provided in the SCR front baffle and the SCR rear bulkhead there are three through-hole, the SCR the
The both ends of one cylinder, the second cylinder of SCR and SCR third cylinder respectively with it is logical in the SCR front baffle and the SCR rear bulkhead
Hole connection.
Specifically, as shown in Figure 2 and Figure 5, the selective catalytic reduction device 120 further includes NOx sensor 23, described
NOx sensor 23 is arranged on the escape pipe 24.
Specifically, as shown in Figure 2 and Figure 5, the ship tail gas after-treatment device 100 further includes being arranged in the connecting tube
Gas on 9 helps formula urea nozzle 8, connecting flange 10 and temperature sensor 11, and the connecting hole pipe connecting with the connecting tube 9
13, the connecting hole pipe 13 is located in the selective catalytic reduction catalyst device 120, and the gas helps formula urea nozzle 9, connects
Component is collectively formed in acting flange 10, temperature sensor 11, connecting hole pipe 13 and connecting tube 9, can complete the spray of aqueous solution of urea
It penetrates and the mixing of exhaust gas and aqueous solution of urea.
Therefore, ship tail gas after-treatment device provided by the utility model, has the advantage that：
1. prime DOC device uses drum type brake, SCR device uses triangle case structure, convenient aboard ship to install, structure
Compact reliable, assembly versatility is good；
2. passing through the pollutants such as the NOx in SCR also parent pollutant, enable entire exhaust aftertreatment by vent gas treatment to completely
Sufficient three discharge standard of non-rice habitats state；
3. previous ship machine after-treatment device is frequently with rectangular catalyst carrier, larger, catalysis that there are after-treatment device sizes
The problems such as agent can not be reliably fixed.The utility model SCR is conveniently directly plugged into stainless steel cylinder using round 300 mesh catalyst,
It ensure that the vibration reliability of catalyst carrier, and reduce the volume of after-treatment device；
4. rectangular catalyst carrier usually has that NH3 is unevenly distributed in catalyst carrier end face, this is practical new
Type uses circular catalyst carrier one parallel-connection structure, can greatly improve urea and resolve into the distributing homogeneity after NH3；
5. three groups of circle SCR catalysts are integrally arranged in parallel, are arranged compared to classical tandem, greatly reduce after-treatment device
Whole back pressure.
It is carried out specifically below with reference to the course of work of the Fig. 2 to ship tail gas after-treatment device provided by the utility model
It is bright.
As shown in Fig. 2, inlet flange 1 and air inlet pipe 2 form component, the exhaust outlet and DOC of marine engine group are connected
Device.Air inlet pipe 2 cooperates DOC cylinder 4 to form a mixing chamber, improves the flow velocity of exhaust gas 6 front end face of DOC catalyst carrier again
Distributing homogeneity.Secondly DOC device drive end bearing bracket 3 and DOC device rear end cap 7 are by DOC device common guarantee DOC device
Air-tightness makes exhaust gas be difficult to reveal.DOC carrier, which pads 5 pairs of DOC catalyst carriers 6, fixed and shock absorbing, simultaneously
DOC carrier liner also acts as insulation effect, reduces the heat loss in DOC catalyst carrier.DOC catalyst carrier 6 is in this system
In mainly by the NO in ship machine exhaust gas convert NO2, to improve the fast reaction accounting in SCR device, improve the present apparatus
To the transformation efficiency of NOx.
Gas helps formula urea nozzle 8 and component is collectively formed in connecting tube 9, connecting flange 10 and connecting hole pipe 11, completes urine
The injection of plain aqueous solution and the mixing of exhaust gas and aqueous solution of urea can greatly improve the decomposition rate of urea, promote NH3
Mixing uniformity and distributing homogeneity.SCR device front baffle 14 and SCR rear bulkhead 21 play the work of support SCR cylinder 16
With.A box assembly is collectively formed in SCR device drive end bearing bracket 12, SCR cabinet 15, SCR rear end cap 22, ensure that 3 SCR cylinders
Parallel arrangement.SCR cylinder 16, SCR carrier liner 17, SCR catalyst carrier 18 and ASC catalyst carrier 19 are collectively formed
SCR component 1, and there are three identical SCR components altogether in entire SCR cabinet 15（SCR component 1, SCR component 2 and SCR component 3,
As shown in Figure 4）Parallel connection, the common conversion and processing for completing NOx.Wherein ASC catalyst carrier 19, which plays, is removed without conversion
NH3, to meet four discharge standard of non-rice habitats state.
Therefore, ship tail gas after-treatment device provided by the utility model is arranged in parallel using circular catalyst carrier, knot
Structure compact Layout, the pressure loss are small；The encapsulating structure of circular catalyst carrier combination carrier liner substantially increases post-processing dress
The tolerance degree to vibration is set, the reliability of after-treatment device is improved；Air-flow velocity is improved by the way of mix aperture pipe
The mixing uniformity of uniformity, exhaust gas and urea plays low cost, high performance effect.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case where the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection scope.
Claims (9)
1. a kind of ship tail gas after-treatment device, which is characterized in that the ship tail gas after-treatment device includes：Oxidized form catalysis
Device device, selective catalytic reduction catalyst device and connecting tube, the oxidation catalyst device and selective catalytic reduction
Device device is connected by the connecting tube, and the oxidation catalyst device is cylindrical structure, the selective catalytic reduction
Catalytic converter device is triangle case structure, and the oxidation catalyst device is provided with air inlet far from one end of the connecting tube
Flange and air inlet pipe, the inlet flange are located at one end of the air inlet pipe, and the other end of the air inlet pipe is located at institute
It states in oxidation catalyst device, the inlet flange and the air inlet pipe form component for the oxidation catalyst device
It is connect with the exhaust outlet of marine engine group.
2. ship tail gas after-treatment device according to claim 1, which is characterized in that the oxidation catalyst device packet
DOC drive end bearing bracket, DOC cylinder and DOC rear end cap are included, before the DOC cylinder connects the DOC close to one end of the air inlet pipe
End cap, the DOC cylinder connect the DOC rear end cap close to one end of the connecting tube, are arranged first on the DOC drive end bearing bracket
Through-hole, the air inlet pipe are arranged through the first through hole, and the second through-hole, the connecting tube is arranged on the DOC rear end cap
It is connected to second through-hole.
3. ship tail gas after-treatment device according to claim 2, which is characterized in that the oxidation catalyst device is also
It is padded including catalyst carrier and DOC carrier, the catalyst carrier is located at the DOC inner barrel, the DOC carrier liner
Between the catalyst carrier and the inner wall of the DOC cylinder.
4. ship tail gas after-treatment device according to claim 1, which is characterized in that the selective catalytic reduction device
Including SCR drive end bearing bracket, SCR rear end cap, SCR triangle cabinet and escape pipe, the SCR triangle cabinet is close to the connecting tube
One end connect the SCR drive end bearing bracket, the other end of the SCR triangle cabinet connects the SCR rear end cap, before the SCR
Third through-hole is provided on end cap, the third through-hole is connected to the connecting tube, is provided with four-way on the SCR rear end cap
Hole, the fourth hole are connected to the escape pipe.
5. ship tail gas after-treatment device according to claim 4, which is characterized in that the selective catalytic reduction device
It further include being arranged in parallel in the intracorporal SCR first assembly of the SCR triangle case, the second component of SCR and SCR third component, institute
The conversion and processing of NOx can be completed jointly by stating SCR first assembly, the second component of SCR and SCR third component.
6. ship tail gas after-treatment device according to claim 5, which is characterized in that the SCR first assembly includes SCR
First cylinder and it is located at first intracorporal SCR catalyst of the SCR and ASC catalyst, the SCR catalyst and the SCR
SCR carrier is arranged between the inner wall of first cylinder to pad, second component of SCR includes the second cylinder of SCR, the SCR third
Component includes SCR third cylinder, and first cylinder of SCR, the second cylinder of SCR and SCR third cylinder are arranged in parallel.
7. ship tail gas after-treatment device according to claim 6, which is characterized in that the selective catalytic reduction device
It further include SCR front baffle and SCR rear bulkhead, the SCR front baffle and the SCR rear bulkhead are separately positioned on the SCR first
Three are provided on the both ends of cylinder, the second cylinder of SCR and SCR third cylinder, the SCR front baffle and the SCR rear bulkhead
A through-hole, the both ends of first cylinder of SCR, the second cylinder of SCR and SCR third cylinder respectively with the SCR front baffle and institute
State the through-hole connection on SCR rear bulkhead.
8. ship tail gas after-treatment device according to claim 4, which is characterized in that the selective catalytic reduction device
It further include NOx sensor, the NOx sensor is arranged on the escape pipe.
9. ship tail gas after-treatment device as claimed in any of claims 1 to 8, which is characterized in that the ship machine
Tail-gas after treatment apparatus further includes that the gas being arranged in the connecting tube helps formula urea nozzle, connecting flange and temperature sensor,
And the connecting hole pipe connecting with the connecting tube, the connecting hole pipe are located at the selective catalytic reduction catalyst device
Interior, the gas helps formula urea nozzle, connecting flange, temperature sensor, connecting hole pipe and connecting tube that component is collectively formed, can be complete
At the injection of aqueous solution of urea and the mixing of exhaust gas and aqueous solution of urea.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461768.2U CN208122918U (en) | 2018-04-03 | 2018-04-03 | A kind of ship tail gas after-treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461768.2U CN208122918U (en) | 2018-04-03 | 2018-04-03 | A kind of ship tail gas after-treatment device |
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| Publication Number | Publication Date |
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| CN208122918U true CN208122918U (en) | 2018-11-20 |
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| CN201820461768.2U Active CN208122918U (en) | 2018-04-03 | 2018-04-03 | A kind of ship tail gas after-treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255550A (en) * | 2020-01-21 | 2020-06-09 | 中国重汽集团济南动力有限公司 | Diesel oil state six post-processor assembly |
| CN111663987A (en) * | 2020-06-05 | 2020-09-15 | 合肥神舟催化净化器股份有限公司 | Automobile exhaust catalytic purification device |
-
2018
- 2018-04-03 CN CN201820461768.2U patent/CN208122918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255550A (en) * | 2020-01-21 | 2020-06-09 | 中国重汽集团济南动力有限公司 | Diesel oil state six post-processor assembly |
| CN111663987A (en) * | 2020-06-05 | 2020-09-15 | 合肥神舟催化净化器股份有限公司 | Automobile exhaust catalytic purification device |
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