CN107537583A - Trapezoidal oxidation-resistant ceramic honeycomb substrate - Google Patents
Trapezoidal oxidation-resistant ceramic honeycomb substrate Download PDFInfo
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- CN107537583A CN107537583A CN201610481601.8A CN201610481601A CN107537583A CN 107537583 A CN107537583 A CN 107537583A CN 201610481601 A CN201610481601 A CN 201610481601A CN 107537583 A CN107537583 A CN 107537583A
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- Prior art keywords
- trapezoidal
- next door
- stomata
- oxidation
- honeycomb substrate
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of trapezoidal oxidation-resistant ceramic honeycomb substrate.It includes the trapezoidal cylindrical body in section, and cylindrical body is densely covered with stomata in the axial direction（1）, stomata（1）One end be opening（6）, the other end is provided with closure face（2）, block face（2）And opening（6）Arranged for interval, two neighboring stomata（1）It is provided with next door（3）, next door（3）On be provided with cellular micropore（4）, next door（3）It is upper to be coated with catalyst coat（7）, ceramic honey comb surface is coated with antioxidant coating.A kind of trapezoidal oxidation-resistant ceramic honeycomb substrate of the present invention, anti-oxidant, good integrity, increases filter area to greatest extent in the confined space, and easy for installation, good purification；Micropore on next door can effectively filter the black smoke particle in waste gas, and black smoke particle can be burned off in the presence of catalyst coat, further increase tail gas clean-up effect.
Description
Technical field
The present invention relates to a kind of trapezoidal oxidation-resistant ceramic honeycomb substrate, for purifying vehicle exhaust.Belong to Ceramic manufacturing to set
Standby technical field.
Background technology
At present, the automobile exhaust purifier of unobstructed application both at home and abroad, its catalyst carrier are typically all carried using ceramic honeycomb
Body, this carrier are to add adhesive with synthesis of dichroite raw material, burn and lose agent, blended spice, pugging, extrusion, drying, sintering,
Then impregnated catalyst re-dry is made.In use, it is put into exhaust purifier metal shell stage casing.
Conventional ceramic honeycomb carrier is generally square cylinder, and it is net that the ceramic honeycomb carrier of such a shape is loaded into tail gas
When changing in the metal shell of device, often cause the space between ceramic honeycomb carrier and metal shell big so that tail gas clean-up
Device can not effectively utilize the space of automobile chassis, and some producers can add the pottery of small dimension to plug the gap in gap
Porcelain honeycomb substrate, this can cause the globality poor of the ceramic honeycomb carrier in metal-back, increase the resistance during vent gas treatment,
Tail gas clean-up effect is reduced, and honeycomb substrate is when mounted, complex operation, and efficiency is low；The gas of such a honeycomb substrate simultaneously
Hole is clear opening, poor to the waste gas purification effect containing black smoke particle.
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 trapezoidal oxidation-resistant ceramic honeycomb substrate, this ceramics
Honeycomb substrate good integrity, good purification and easy for installation, honeycomb substrate can be effectively anti-oxidant.
The object of the present invention is achieved like this：
A kind of trapezoidal oxidation-resistant ceramic honeycomb substrate, including cylindrical body, feature be：The section of the cylindrical body is trapezoidal,
The cylindrical body includes the first arc-shaped edges, the second arc-shaped edges, the first hypotenuse and the second hypotenuse, first arc-shaped edges, second
Hypotenuse, the second arc-shaped edges and the first hypotenuse join end to end successively, and connecting place uses round-corner transition, and the cylindrical body is along axis side
To stomata is densely covered with, one end of the stomata is opening, and the other end is provided with closure face, the closure face and open space cloth
Put, the two neighboring stomata is provided with next door, is provided with next door in cellular micropore, is applied on next door coated with catalyst
Layer, the surface of the ceramic honey comb are coated with antioxidant coating, and the antioxidant coating includes 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 trapezoidal oxidation-resistant ceramic honeycomb substrate of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of trapezoidal oxidation-resistant ceramic honeycomb substrate 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 trapezoidal oxidation-resistant ceramic honeycomb substrate of the present invention, good integrity, the increase filtering to greatest extent in the confined space
Area, and easy for installation, good purification；Micropore on next door can effectively filter the black smoke particle in waste gas, and be catalyzed
Black smoke particle can be burned off in the presence of agent coating, further increase tail gas clean-up effect；Ceramic honey comb surface is coated with
Antioxidant coating, ceramic honey comb surface can be effectively prevented to be oxidized.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-section of trapezoidal oxidation-resistant ceramic honeycomb substrate of the present invention.
Fig. 2 is a kind of partial axial section figure of trapezoidal oxidation-resistant ceramic honeycomb substrate of the present invention.
Fig. 3 is the structural representation in the next door of the present invention.
In figure：
Stomata 1,
Closure face 2,
Next door 3,
Micropore 4,
Tail gas 5,
Opening 6,
Catalyst coat 7,
First arc-shaped edges 8,
Second arc-shaped edges 9,
First hypotenuse 10,
Second hypotenuse 11.
Embodiment
Referring to Fig. 1-3, the present invention relates to a kind of trapezoidal oxidation-resistant ceramic honeycomb substrate, and it includes the trapezoidal column in section
Body, the cylindrical body include the first arc-shaped edges 8, the second arc-shaped edges 9, the first hypotenuse 10 and the second hypotenuse 11, and described first
Arc-shaped edges 8, the second hypotenuse 11, the second arc-shaped edges 9 and the first hypotenuse 10 join end to end successively, and connecting place uses round-corner transition, institute
State cylindrical body and be densely covered with stomata 1 in the axial direction, one end of the stomata 1 is opening 6, and the other end is provided with closure face 2, institute
The closure face of stating 2 and the arranged for interval of opening 6, the two neighboring stomata 1 are provided with next door 3, are provided with next door 3 in cellular micro-
Hole 4, catalyst coat 7 is coated with next door 3.
Wherein, the hole count of stomata 1 is 600 holes/square inch, and the thickness in next door 3 is 0.13 ~ 0.14mm.
The surface of the ceramic honey comb is 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%
The nickel of silicon, 0.10-0.20wt% zirconium and surplus.It can be noted that it has the aluminium content reduced from above-mentioned composition,
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 present invention is fabricated to honeycomb ceramic carrier using cordierite, and is built in diesel engine vent gas purification
In device, the waste gas with black smoke particle of diesel engine discharge enters from the opening 6 of stomata 1, because stomata 1 is opened at one end
Mouthfuls 6, and be then closure face 2 in the other end, therefore waste gas can be by the next door 3 with micropore 4, then opening from adjacent air holes 1
Mouth 6 is discharged, and because the diameter of black smoke particle is big compared with micropore 4, therefore the black smoke particle in waste gas will catch next door 3 by filtering
On, air-flow then passes through from micropore 4.
Active rare earth of the catalyst coat 7 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 4, urging on next door 3 is coated
Agent coating 7 will strengthen CO, HC, NOxThe activity of three kinds of gas, it is promoted to carry out certain oxidationreduction chemical reaction, wherein
CO is oxidized to colourless nontoxic carbon dioxide at high temperature, and HC compounds resolve into water at high temperature（H2O）And titanium dioxide
Carbon, NOxIt is reduced into nitrogen and oxygen.
When diesel exhaust gas temperature reaches 375 degrees Celsius, in the presence of catalyst coat 7, the black smoke on next door 3
Particle can progressively burn and aoxidize, and the purifying rate of black smoke particle about reaches more than 85%, when reaction temperature reaches 500 degrees Celsius
When catalyst and black smoke particle reaction fall so as to completely burned（Catalysis burning）, now the purifying rate of black smoke particle up to 90% with
On.
Claims (3)
1. a kind of trapezoidal oxidation-resistant ceramic honeycomb substrate, including cylindrical body, it is characterised in that：The section of the cylindrical body is in
Trapezoidal, the cylindrical body includes the first arc-shaped edges（8）, the second arc-shaped edges（9）, the first hypotenuse（10）With the second hypotenuse（11）,
First arc-shaped edges（8）, the second hypotenuse（11）, the second arc-shaped edges（9）With the first hypotenuse（10）Join end to end successively, connecting place
Using round-corner transition, the cylindrical body is densely covered with stomata in the axial direction（1）, the stomata（1）One end be opening（6）,
The other end is provided with closure face（2）, the closure face（2）And opening（6）Arranged for interval, the two neighboring stomata（1）Set
There is next door（3）, next door（3）On be provided with cellular micropore（4）, next door（3）It is upper to be coated with catalyst coat（7）, the honeybee
Nest ceramic surface is coated with antioxidant coating, and the antioxidant coating includes 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%
The nickel of zirconium and surplus.
A kind of 2. trapezoidal oxidation-resistant ceramic honeycomb substrate according to claim 1, it is characterised in that：The stomata（1）'s
Hole count is 600 holes/square inch.
A kind of 3. trapezoidal oxidation-resistant ceramic honeycomb substrate according to claim 1 or 2, it is characterised in that：The next door（3）
Thickness be 0.13 ~ 0.14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481601.8A CN107537583A (en) | 2016-06-28 | 2016-06-28 | Trapezoidal oxidation-resistant ceramic honeycomb substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481601.8A CN107537583A (en) | 2016-06-28 | 2016-06-28 | Trapezoidal oxidation-resistant ceramic honeycomb substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107537583A true CN107537583A (en) | 2018-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610481601.8A Pending CN107537583A (en) | 2016-06-28 | 2016-06-28 | Trapezoidal oxidation-resistant ceramic honeycomb substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107537583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454841A (en) * | 2019-08-08 | 2019-11-15 | 华帝股份有限公司 | High-efficient honeycomb heating body for gas cooking utensils |
-
2016
- 2016-06-28 CN CN201610481601.8A patent/CN107537583A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454841A (en) * | 2019-08-08 | 2019-11-15 | 华帝股份有限公司 | High-efficient honeycomb heating body for gas cooking utensils |
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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 |