CN107542525A - Anti-oxidative automobile exhaust purifier - Google Patents
Anti-oxidative automobile exhaust purifier Download PDFInfo
- Publication number
- CN107542525A CN107542525A CN201610489658.2A CN201610489658A CN107542525A CN 107542525 A CN107542525 A CN 107542525A CN 201610489658 A CN201610489658 A CN 201610489658A CN 107542525 A CN107542525 A CN 107542525A
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- CN
- China
- Prior art keywords
- ceramic honeycomb
- honeycomb carrier
- oxidative
- subtube
- automobile exhaust
- 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.)
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to a kind of anti-oxidative automobile exhaust purifier.It includes Rose Box（1）, Rose Box（1）Include superposed main pipeline（2）There is the subtube of two bifurcateds with bottom（5）, subtube（5）Interior edge airflow direction is disposed with degassing conduits（4）And ceramic honeycomb carrier（3）, ceramic honeycomb carrier surface is coated with antioxidant coating.A kind of anti-oxidative automobile exhaust purifier of the present invention, ceramic honeycomb carrier can be anti-oxidant, and using degassing conduits and ceramic honeycomb carrier double-filtration, tail gas is reacted into CO2、H2O、N2And O2, the micropore on next door can effectively filter the carbon soot particles in waste gas, and carbon soot particles can be burned off in the presence of catalyst coat so that ceramic honeycomb carrier has regeneration function, ensure that the diesel motor exhaust of discharge does not pollute the environment；And after being diverted to subtube using main pipeline, increase filter area in limited space so that the clean-up effect of vehicle exhaust is more preferable.
Description
Technical field
The present invention relates to a kind of anti-oxidative automobile exhaust purifier, for purifying vehicle exhaust.Belong to automobile equipment skill
Art field.
Background technology
At present, common automobile exhaust purifier, it is using catalyst and NO, NO in vehicle exhaust2Reacted with CO, it is raw
Into CO2And N2Both uncontaminated gases, but the automobile of diesel engine is equipped with, due to containing in the tail gas of diesel engine
Carbon soot particles, existing automobile exhaust purifier can not effectively filter carbon soot particles, can so cause environmental pollution；It is simultaneously existing
Clarifier in limited space due to cannot be guaranteed good filter area, therefore tail gas clean-up is incomplete, meeting after discharge
Pollute environment；Existing honeycomb substrate can not be effectively anti-oxidant, can not meet the needs of client.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of anti-oxidative automobile exhaust purifier, this antioxygen
CO, HC, the NO of change type automobile exhaust purifier in high efficiency filter vehicle exhaustxAlso soot can be filtered while pernicious gas
Grain, and carbon soot particles can progressively burn and aoxidize at high temperature so that ceramic honeycomb carrier has regeneration function；And limited
Space in, increase filter area, honeycomb substrate can be effectively anti-oxidant.
The object of the present invention is achieved like this：
A kind of anti-oxidative automobile exhaust purifier, including Rose Box, it is characterised in that：The Rose Box include be located at top
Main pipeline and bottom have the subtubes of two bifurcateds, the axial line of described two subtubes and the axial line of main pipeline are in respectively
45° angle, the subtube interior edge airflow direction are disposed with degassing conduits and ceramic honeycomb carrier, the ceramic honeycomb carrier
It is corresponding with the inwall of subtube, and ceramic honeycomb carrier is densely covered with stomata in the axial direction, one end of the stomata is opening,
The other end is provided with closure face, the closure face and open space arrangement, and next door is provided between the two neighboring stomata, every
It is provided with wall in cellular micropore, catalyst coat is coated with next door, the surface of the ceramic honeycomb carrier is coated with anti-
Oxide covering, the antioxidant coating include 11-14wt% chromium, 11-14wt% cobalt, 7.5-9.5wt% aluminium, 0.20-
0.60wt% yttrium, 0.10-0.50wt% hafnium, 0.10-0.30wt% silicon, the nickel of 0.10-0.20wt% zirconium and surplus.
A kind of anti-oxidative automobile exhaust purifier of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of anti-oxidative automobile exhaust purifier of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of anti-oxidative automobile exhaust purifier of the present invention, using degassing conduits and ceramic honeycomb carrier double-filtration, by master
It is CO, HC, NO to want compositionxTail gas, react into CO2、H2O、N2And O2, while the micropore on next door can be filtered effectively in waste gas
Carbon soot particles, and carbon soot particles can be burned off in the presence of catalyst coat so that ceramic honeycomb carrier has regeneration work(
Can, the filtering and purification of carbon soot particles can be continued, ensure that the diesel motor exhaust of discharge does not pollute the environment；And
After being diverted to subtube using main pipeline, filter area is increased in limited space so that the clean-up effect of vehicle exhaust
More preferably；Ceramic honeycomb carrier surface is coated with antioxidant coating, can effectively prevent ceramic honey comb surface to be oxidized.
Brief description of the drawings
Fig. 1 is a kind of structural representation of anti-oxidative automobile exhaust purifier of the present invention.
Fig. 2 is the schematic cross-section of the ceramic honeycomb carrier of the present invention.
Fig. 3 is the partial axial section figure of the ceramic honeycomb carrier of the present invention.
Fig. 4 is the structural representation in the next door of the ceramic honeycomb carrier of the present invention.
In figure：
Rose Box 1,
Main pipeline 2,
Ceramic honeycomb carrier 3,
Stomata 3.1,
Closure face 3.2,
Next door 3.3,
Micropore 3.4,
Catalyst coat 3.5
Opening 3.6,
Degassing conduits 4,
Subtube 5,
Tail gas 6.
Embodiment
Referring to Fig. 1-4, the present invention relates to a kind of anti-oxidative automobile exhaust purifier, and it includes Rose Box 1, the filtering
The include superposed cylindrical primary duct 2 and bottom of case 1 have the cylindrical subtube 5 of two bifurcateds, described two to be in charge of
The axial line in road 5 and the axial line of main pipeline 2 are in 45° angle respectively, and the interior edge airflow direction of subtube 5 is disposed with exhaust
Tubule 4 and ceramic honeycomb carrier 3, the ceramic honeycomb carrier 3 is corresponding with the inwall of subtube 5, and the edge of ceramic honeycomb carrier 3
Axis direction is densely covered with stomata 3.1, and one end of the stomata 3.1 is opening 3.6, and the other end is provided with closure face 3.2, the envelope
Stifled face 3.2 and the arranged for interval of opening 3.6, the two neighboring stomata 3.1 are provided with next door 3.3, are provided with next door 3.3 in honeycomb
The micropore 3.4 of shape, catalyst coat 3.5 is coated with next door 3.3.
Wherein, the hole count of stomata 3.1 is 600 holes/square inch, and the thickness in next door 3.3 is 0.13 ~ 0.14mm.
The surface of the ceramic honeycomb carrier is coated with antioxidant coating, and the antioxidant coating includes 11-14wt%'s
Chromium, 11-14wt% cobalt, 7.5-9.5wt% aluminium, 0.20-0.60wt% yttrium, 0.10-0.50wt% hafnium, 0.10-0.30wt%
Silicon, 0.10-0.20wt% zirconium and the nickel of surplus.It can be noted that there is the aluminium reduced to contain for it from above-mentioned composition
Amount, this reduces SRZ formation in the alloy for be easily formed SRZ.
More aluminium may produce reaction zone problem in antioxidant coating, and less aluminium can not provide enough aluminium
Maintain good protection class.Less active element（Y, Hf, Si and Zr）Oxidation kinetics may be improved, and it is more active
Element may result in short-circuit oxidation.More chromium may reduce leading phase, γ phases（gamma prime）, and less chromium
Corrosion and heat resistant may be damaged.Extremely suitable composition for antioxidant coating is located exactly among above range.
Operation principle：The waste gas with carbon soot particles of diesel engine discharge is further separated into subtube 5 through main pipeline 2,
By-pass filtration is carried out by degassing conduits 4, carries out secondary filtration subsequently into ceramic honeycomb carrier 3, tail gas is opened from stomata 3.1
Mouth 3.6 enters, and because stomata 3.1 is opening 3.6 at one end, and is then closure face 3.2 in the other end, therefore waste gas can pass through band
There is the next door 3.3 of micropore 3.4, then discharged from the opening 3.6 of adjacent air holes 3.1, because the diameter of carbon soot particles is compared with micropore 3.4
Greatly, the carbon soot particles therefore in waste gas will be caught on next door 3.3 by filtering, and air-flow then passes through from micropore 3.4, from ceramic honeycomb
The waste gas that carrier 3 is discharged enters low-temperature catalyzed area 7 and carries out three-stage filtration, further the pernicious gas of purification residual.
Active rare earth of the catalyst coat 3.5 containing noble metal, Main Ingredients and Appearance have Pt, Pd, Rh, Al2O3、Ce、La、
Zr, Cu, Mn, the waste gas of diesel combustion（The predominantly pernicious gas such as CO, HC, NOx）During through micropore 3.4, next door is coated
Catalyst coat 3.5 on 3.3 will strengthen CO, HC, NOxThe activity of three kinds of gas, it is promoted to carry out certain oxidationreduction
Reaction is learned, wherein CO is oxidized to colourless nontoxic carbon dioxide at high temperature, and HC compounds resolve into water at high temperature
（H2O）And carbon dioxide, NOxIt is reduced into nitrogen and oxygen.
When diesel exhaust gas temperature reaches 375 degrees Celsius, in the presence of catalyst coat 3.5, on next door 3.3
Carbon soot particles can progressively burn and aoxidize, and the purifying rate of carbon soot particles about reaches more than 85%, is taken the photograph when reaction temperature reaches 500
Catalyst and carbon soot particles reaction are so that completely burned is fallen when family name spends（Catalysis burning）, now the purifying rate of carbon soot particles is reachable
More than 90%.
Claims (3)
1. a kind of anti-oxidative automobile exhaust purifier, including Rose Box（1）, it is characterised in that：The Rose Box（1）Include
Superposed main pipeline（2）There is the subtube of two bifurcateds with bottom（5）, described two subtubes（5）Axial line and master
Pipeline（2）Axial line be in 45° angle respectively, the subtube（5）Interior edge airflow direction is disposed with degassing conduits（4）And pottery
Porcelain honeycomb substrate（3）, the ceramic honeycomb carrier（3）With subtube（5）Inwall it is corresponding, and ceramic honeycomb carrier（3）Edge
Axis direction is densely covered with stomata（3.1）, the stomata（3.1）One end be opening（3.6）, the other end is provided with closure face
（3.2）, the closure face（3.2）And opening（3.6）Arranged for interval, the two neighboring stomata（3.1）Between be provided with next door
（3.3）, next door（3.3）On be provided with cellular micropore（3.4）, next door（3.3）It is upper to be coated with catalyst coat（3.5）, institute
State ceramic honey comb surface and be coated with antioxidant coating, the antioxidant coating include 11-14wt% chromium, 11-14wt% cobalt,
7.5-9.5wt% aluminium, 0.20-0.60wt% yttrium, 0.10-0.50wt% hafnium, 0.10-0.30wt% silicon, 0.10-
0.20wt% zirconium and the nickel of surplus.
A kind of 2. anti-oxidative automobile exhaust purifier according to claim 1, it is characterised in that：The stomata（3.1）
Hole count be 600 holes/square inch.
A kind of 3. anti-oxidative automobile exhaust purifier according to claim 1 or 2, it is characterised in that：The next door
（3.3）Thickness be 0.13 ~ 0.14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489658.2A CN107542525A (en) | 2016-06-29 | 2016-06-29 | Anti-oxidative automobile exhaust purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489658.2A CN107542525A (en) | 2016-06-29 | 2016-06-29 | Anti-oxidative automobile exhaust purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107542525A true CN107542525A (en) | 2018-01-05 |
Family
ID=60962485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610489658.2A Pending CN107542525A (en) | 2016-06-29 | 2016-06-29 | Anti-oxidative automobile exhaust purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107542525A (en) |
-
2016
- 2016-06-29 CN CN201610489658.2A patent/CN107542525A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180105 |