CN107552098A - Kidney ellipsoid acid-proof ceramics honeycomb substrate - Google Patents
Kidney ellipsoid acid-proof ceramics honeycomb substrate Download PDFInfo
- Publication number
- CN107552098A CN107552098A CN201610500033.1A CN201610500033A CN107552098A CN 107552098 A CN107552098 A CN 107552098A CN 201610500033 A CN201610500033 A CN 201610500033A CN 107552098 A CN107552098 A CN 107552098A
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- Prior art keywords
- acid
- next door
- stomata
- kidney ellipsoid
- parts
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Abstract
The present invention relates to a kind of kidney ellipsoid acid-proof ceramics honeycomb substrate.It includes the cylindrical body that section is in kidney ellipsoid, 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 acid-proof coating.A kind of kidney ellipsoid acid-proof ceramics honeycomb substrate of the present invention, can be effectively acidproof, 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 kidney ellipsoid acid-proof ceramics 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 acidproof, therefore is faced with the risk being corroded in use, there is safety
Hidden danger.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of kidney ellipsoid acid-proof ceramics honeycomb substrate, this ceramics
Honeycomb substrate good integrity, good purification and easy for installation, honeycomb substrate can be effectively acidproof.
The object of the present invention is achieved like this：
A kind of kidney ellipsoid acid-proof ceramics honeycomb substrate, including cylindrical body, feature be：The section of the cylindrical body is in oval
Shape, the cylindrical body are densely covered with stomata in the axial direction, and one end of the stomata is opening, and the other end is provided with closure face,
The closure face and open space arrangement, the two neighboring stomata are provided with next door, are provided with next door in cellular micropore,
Catalyst coat is coated with next door, the surface of the ceramic honey comb is coated with acid-proof coating, and acid-proof coating is mainly by following original
Material proportioning in parts by weight is made：13 ~ 45 parts of quartz sand, 12 ~ 40 parts of petroleum coke, 9 ~ 25 parts of wood chip, 8 ~ 20 parts of sodium chloride, dioxy
Change 1 ~ 9 part of titanium, 13 ~ 30 parts of ethanol, 30 ~ 55 parts of water.
The preparation method of the present invention comprises the following steps：
Step 1: quartz sand, petroleum coke and wood chip are pulverized, powder diameter is 400 ~ 600 mesh；
Step 2: in powder and sodium chloride powder the input high temperature resistance furnace that step 1 is obtained, radiant heating, temperature is maintained at
1000 ~ 1200 DEG C, 0.5 ~ 1 hour；
Step 3: powder and titania powder by weight 3 ~ 6 after step 2 pyrolytic semlting:Water is added after 1 mixing
In, ethanol is added thereto while stirring, to all dissolving can acid-proof coating.
A kind of kidney ellipsoid acid-proof ceramics honeycomb substrate of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of kidney ellipsoid acid-proof ceramics 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 kidney ellipsoid acid-proof ceramics 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
Acid-proof coating, can be effectively acidproof.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-section of kidney ellipsoid acid-proof ceramics honeycomb substrate of the present invention.
Fig. 2 is a kind of partial axial section figure of kidney ellipsoid acid-proof ceramics 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.
Embodiment
Referring to Fig. 1-3, the present invention relates to a kind of kidney ellipsoid acid-proof ceramics honeycomb substrate, and it includes the post that section is in kidney ellipsoid
Shape body, the cylindrical body are densely covered with stomata 1 in the axial direction, and one end of the stomata 1 is opening 6, and the other end is provided with
Closure face 2, the closure face 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 and are in
Cellular micropore 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 acid-proof coating, and acid-proof coating is mainly matched by following raw materials by weight portion
It is made：13 ~ 45 parts of quartz sand, 12 ~ 40 parts of petroleum coke, 9 ~ 25 parts of wood chip, 8 ~ 20 parts of sodium chloride, 1 ~ 9 part of titanium dioxide, ethanol 13 ~
30 parts, 30 ~ 55 parts of water.
As a preferred embodiment, the acid-proof coating is mainly made up of following raw materials by weight portion proportioning：Quartz sand 40
Part, 32 parts of petroleum coke, 21 parts of wood chip, 13 parts of sodium chloride, 7 parts of titanium dioxide, 26 parts of ethanol, 48 parts of water.
The preparation method of acid-proof coating, is comprised the steps of：
（1）Quartz sand, petroleum coke and wood chip are pulverized, powder diameter is 400 ~ 600 mesh；
（2）By step（1）In powder and sodium chloride powder the input high temperature resistance furnace of acquisition, radiant heating, temperature is maintained at
1000 ~ 1200 DEG C, 0.5 ~ 1 hour；
（3）Through step（2）Powder after pyrolytic semlting is with titania powder by weight 3 ~ 6:It is added to the water after 1 mixing, side
Stirring side adds ethanol thereto, to all dissolving can acid-proof coating.
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 kidney ellipsoid acid-proof ceramics honeycomb substrate, including cylindrical body, it is characterised in that：The section of the cylindrical body is in
Kidney ellipsoid, the cylindrical body are densely covered with stomata in the axial direction（1）, the stomata（1）One end be opening（6）, the other end
The closure face of being provided with（2）, the closure face（2）And opening（6）Arranged for interval, the 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）, the ceramic honey comb
Surface is coated with acid-proof coating, and acid-proof coating is mainly made up of following raw materials by weight portion proportioning：13 ~ 45 parts of quartz sand, stone
12 ~ 40 parts of oil coke, 9 ~ 25 parts of wood chip, 8 ~ 20 parts of sodium chloride, 1 ~ 9 part of titanium dioxide, 13 ~ 30 parts of ethanol, 30 ~ 55 parts of water.
A kind of 2. kidney ellipsoid acid-proof ceramics 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. kidney ellipsoid acid-proof ceramics 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 |
|---|---|---|---|
| CN201610500033.1A CN107552098A (en) | 2016-06-30 | 2016-06-30 | Kidney ellipsoid acid-proof ceramics honeycomb substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610500033.1A CN107552098A (en) | 2016-06-30 | 2016-06-30 | Kidney ellipsoid acid-proof ceramics honeycomb substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107552098A true CN107552098A (en) | 2018-01-09 |
Family
ID=60969235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610500033.1A Pending CN107552098A (en) | 2016-06-30 | 2016-06-30 | Kidney ellipsoid acid-proof ceramics honeycomb substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107552098A (en) |
-
2016
- 2016-06-30 CN CN201610500033.1A patent/CN107552098A/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: 20180109 |