CN107288713A - The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate - Google Patents
The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate Download PDFInfo
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- CN107288713A CN107288713A CN201610199731.2A CN201610199731A CN107288713A CN 107288713 A CN107288713 A CN 107288713A CN 201610199731 A CN201610199731 A CN 201610199731A CN 107288713 A CN107288713 A CN 107288713A
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- Prior art keywords
- exhaust gas
- environment
- honeycomb
- friendly type
- type exhaust
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2301/00—Inorganic additives or organic salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of environment-friendly type exhaust gas filter.It includes Rose Box（1）, the Rose Box（1）Inside it is provided with the first screen pack（2）, ceramic honeycomb carrier（3）With the second screen pack（7）, the coating processes of honeycomb substrate are including Step 1: dispensing；Step 2: taking slurry；Step 3: coating；Step 4: firing.The coating processes of a kind of environment-friendly type exhaust gas filter of the present invention and honeycomb substrate, under screen pack and ceramic honeycomb carrier double-filtration, by the tail gas that main component is CO, HC, NOx, react into CO2、H2O、N2And O2, while the 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；Coating processes are not only coated uniformly, and the slurry coated can be combined fully with ceramic monolith so that the good filtration effect of ceramic monolith.
Description
Technical field
The present invention relates to a kind of environment-friendly type exhaust gas filter and the coating processes of honeycomb substrate, for purifying vehicle exhaust.
Belong to automobile equipment technical field.
Background technology
At present, common car tail-gas filter, is all much to be expelled directly out without filtering, otherwise be exactly filter
It is improper, it is easy to lead and put air pollution and noise pollution；Particularly, the automobile of Diesel engine is equipped with, due to diesel engine
Contain black smoke particle in the tail gas of machine, existing exhaust gas filter can not effectively filter black smoke particle, can so cause environment dirty
Dye.
Existing ceramic-substrate catalyst coating processes are to spray coating slurry, Ci Zhonggong in ceramic monolith bottom up
The defect of skill is：Slurry not only coats difficulty greatly in watery, and coating slurry can not fully be combined with carrier, after coating
Ceramic monolith unsightly, and poor filtration effect.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided the painting of a kind of environment-friendly type exhaust gas filter and honeycomb substrate
Coating process, this exhaust gas filter can also filter black smoke particle while CO, HC, NOx pernicious gas in filtering vehicle exhaust,
And black smoke particle can progressively burn and aoxidize at high temperature；Coating processes are not only coated uniformly, and the slurry coated and ceramics
Carrier can be combined fully so that the good filtration effect of ceramic monolith.
The object of the present invention is achieved like this：
A kind of environment-friendly type exhaust gas filter, including Rose Box, it is characterised in that：Set gradually in the Rose Box along airflow direction
There are the first screen pack, ceramic honeycomb carrier and the second screen pack, the section of the Rose Box includes the first arc-shaped edges, the second circular arc
Side, the first hypotenuse and the second hypotenuse, first arc-shaped edges, the second hypotenuse, the second arc-shaped edges and the first hypotenuse head and the tail phase successively
Even, connecting place uses round-corner transition, and the ceramic honeycomb carrier is densely covered with stomata in the axial direction, and one end of the stomata is to open
Mouthful, the other end is provided with closure face, the closure face and open space arrangement, and the two neighboring stomata is provided with next door, every
It is provided with wall in cellular micropore, catalyst coat is coated with next door.
A kind of environment-friendly type exhaust gas filter of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of environment-friendly type exhaust gas filter of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
A kind of environment-friendly type exhaust gas filter of the present invention, its first screen pack is made of copper monoxide material.
A kind of environment-friendly type exhaust gas filter of the present invention, its special second screen pack is made of absorbent charcoal material.
A kind of coating processes of the honeycomb substrate of environment-friendly type exhaust gas filter of the present invention, are characterized in：The coating processes
Comprise the following steps：
Step 1: dispensing, activated alumina and platinum, rhodium, palladium precious metal solution are mixed 12 hours, obtain percetage by weight first
30-70% mixed solution, is then incorporated percetage by weight 25-60% rare earth, adds percetage by weight 1-5% activearm
Point（Molecular sieve）, percetage by weight 1-5% high-molecular resin solution, percetage by weight 1-5% aluminium glue, percetage by weight 1-
5% rare earth nitrades, stir agglutination in 6 hours；Its middle rare earth is chloride oxygen scavenging material；Active component is high porosity
Molecular sieve；High-molecular resin solution is poly-vinyl alcohol solution, and its water is 1 with material ratio：20；
Step 2: taking slurry, by calculating the area in honeycomb ceramic carrier next door, and then calculate gluey in required step one
The weight of mixed liquor, then takes out quantitative gluey mixed liquor with container；
Step 3: coating, honeycomb ceramic carrier is placed in the top of a suction device, suction device and honeycomb ceramic carrier
Bottom is close to, and the obtained slurry of step 3 is poured on into the top surface of honeycomb ceramic carrier, slurry jelly does not possess mobility,
Positioned at the surface of honeycomb ceramic carrier, suction device is now opened, in the presence of suction device, gluey slurry is along honeycomb
The next door of ceramic monolith is attracted to bottom surface from top surface；
Step 4: firing, the stove that the honeycomb ceramic carrier that step 4 is obtained is placed in into 550 DEG C is fired 3-5 hours.
Compared with prior art, the beneficial effects of the invention are as follows：
The coating processes of a kind of environment-friendly type exhaust gas filter of the present invention and honeycomb substrate, in the first screen pack, ceramic honeycomb carrier
Under the three-stage filtration of the second filtering, by the tail gas that main component is CO, HC, NOx, CO is reacted into2、H2O、N2And O2, with after
Micropore on wall can effectively filter the black smoke particle in waste gas, and black smoke particle can be burned in the presence of catalyst coat
Fall, further increase tail gas clean-up effect；Added in dispensing as the poly-vinyl alcohol solution of adhesive and as adsorbent
Aluminium glue, therefore mixed liquor after stirring is jelly, and the suction device in matching step three can cause slurry to be carried from ceramics
The top surface of body starts coating, with it is existing coat the technique of watery slurry since the ceramic monolith bottom compared with, slurry of the present invention
Coating is uniform, and the slurry of coating can be combined fully with ceramic monolith so that the good filtration effect of ceramic monolith.
Brief description of the drawings
Fig. 1 is a kind of structural representation of environment-friendly type exhaust gas filter of the invention.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the schematic cross-section of the ceramic honeycomb carrier of the present invention.
Fig. 4 is the partial axial section figure of the ceramic honeycomb carrier of the present invention.
Fig. 5 is the structural representation in the next door of the ceramic honeycomb carrier of the present invention.
In figure：
Rose Box 1,
First arc-shaped edges 1.1,
Second arc-shaped edges 1.2,
First hypotenuse 1.3,
Second hypotenuse 1.4,
First screen pack 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,
Inlet exhaust gas 4,
Offgas outlet 5,
Tail gas 6,
Second screen pack 7.
Embodiment
Referring to Fig. 1-5, the present invention relates to a kind of environment-friendly type exhaust gas filter, it includes Rose Box 1, the first screen pack 2, pottery
The screen pack 7 of porcelain honeycomb substrate 3 and second, the left end of Rose Box 1 is inlet exhaust gas 4, and right-hand member is offgas outlet 5, first mistake
Filter screen 2, the screen pack 7 of ceramic honeycomb carrier 3 and second are arranged in Rose Box 1, and the first screen pack 2 is at inlet exhaust gas 4, and
Two screen packs 7 are at offgas outlet, and the Rose Box 1 includes the first arc-shaped edges 1.1, the second arc-shaped edges 1.2, the first hypotenuse
1.3 and second hypotenuse 1.4, first arc-shaped edges 1.1, the second hypotenuse 1.4, the second arc-shaped edges 1.2 and the first hypotenuse 1.3 are successively
Join end to end, connecting place uses round-corner transition, the shape of the ceramic honeycomb carrier 3 is corresponding with Rose Box 1, and ceramic honeycomb is carried
Body 3 is densely covered with stomata 3.1 in the axial direction, and one end of the stomata 3.1 is opening 3.6, and the other end is provided with closure face 3.2,
The closure 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, next door 3.3 and are provided with
In cellular micropore 3.4, 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.
First screen pack 2 is made of copper monoxide material, and the second screen pack 7 is made of absorbent charcoal material.By
There is very strong oxidisability in copper monoxide, so when the carbon monoxide with reproducibility is run into moment will be carried out to it
Oxidation, produce and do not pollute the carbon dioxide of air, whole process is exactly a redox process, the second screen pack 7
The first screen pack 2 and the untreated CO gas of ceramic honeycomb carrier 3 can be carried out for the screen pack with activated carbon
Absorption.
The coating processes of the honeycomb substrate of the present invention comprise the following steps：
Step 1: dispensing, activated alumina and platinum, rhodium, palladium precious metal solution are mixed 12 hours, obtain percetage by weight first
30-70% mixed solution, is then incorporated percetage by weight 25-60% rare earth, adds percetage by weight 1-5% activearm
Point（Molecular sieve）, percetage by weight 1-5% high-molecular resin solution, percetage by weight 1-5% aluminium glue, percetage by weight 1-
5% rare earth nitrades, stir agglutination in 6 hours；Its middle rare earth is chloride oxygen scavenging material；Active component is high porosity
Molecular sieve；High-molecular resin solution is poly-vinyl alcohol solution, and its water is 1 with material ratio：20.
Step 2: taking slurry, by calculating the area in honeycomb ceramic carrier next door, and then glue in required step one is calculated
The weight of the mixed liquor of shape, then takes out quantitative gluey mixed liquor with container.
Step 3: coating, honeycomb ceramic carrier is placed in the top of a suction device, suction device is carried with ceramic honey comb
The bottom of body is close to, and the obtained slurry of step 3 is poured on into the top surface of honeycomb ceramic carrier, and slurry jelly does not possess stream
Dynamic property, positioned at the surface of honeycomb ceramic carrier, now opens suction device, in the presence of suction device, gluey slurry edge
The next door for honeycomb ceramic carrier is attracted to bottom surface from top surface.
Step 4: firing, the stove that the honeycomb ceramic carrier that step 4 is obtained is placed in into 550 DEG C is fired 3-5 hours.
In step one, add after the poly-vinyl alcohol solution as adhesive and the aluminium glue as adsorbent, therefore stirring
Mixed liquor jelly, and the suction device in matching step three can cause slurry to be coated since the top surface of ceramic monolith,
With it is existing coat the technique of watery slurry since the ceramic monolith bottom compared with, slurry coating of the present invention is uniform, the slurry of coating
Material can be combined fully with ceramic monolith so that the good filtration effect of ceramic monolith.
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 inlet exhaust gas 4 with black smoke particle of Diesel engine discharge enters, by the one-level mistake of the first screen pack 2
Filter, carries out secondary filtration, tail gas enters from the opening 3.6 of stomata 3.1, because stomata 3.1 exists subsequently into ceramic honeycomb carrier 3
One end is opening 3.6, and is then closure face 3.2 in the other end, therefore waste gas can be by the next door 3.3 with micropore 3.4, then
Discharged from the opening 3.6 of adjacent air holes 3.1, because the diameter of black smoke particle is big compared with micropore 3.4, therefore the black smoke particle in waste gas
It will be caught by filtering on next door 3.3, air-flow is then passed through from micropore 3.4, the waste gas discharged from ceramic honeycomb carrier 3 enters second
Screen pack 7 carries out three-stage filtration, and the carbon monoxide of residual is adsorbed.
Active rare earth of the catalyst coat 3.5 containing noble metal, Main Ingredients and Appearance has 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, promotes it 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
Black smoke particle can progressively burn and aoxidize, and the purifying rate of black smoke particle about reaches more than 85%, when reaction temperature reaches that 500 take the photograph
Catalyst and black smoke particle reaction so as to burn completely when family name spends（Catalysis burning）, now the purifying rate of black smoke particle is reachable
More than 90%.
Claims (6)
1. a kind of environment-friendly type exhaust gas filter, including Rose Box（1）, it is characterised in that：The Rose Box（1）It is interior along airflow direction
It is disposed with the first screen pack（2）, ceramic honeycomb carrier（3）With the second screen pack（7）, the Rose Box（1）Section bag
Include the first arc-shaped edges（1.1）, the second arc-shaped edges（1.2）, the first hypotenuse（1.3）With the second hypotenuse（1.4）, first arc-shaped edges
（1.1）, the second hypotenuse（1.4）, the second arc-shaped edges（1.2）With the first hypotenuse（1.3）Join end to end successively, connecting place uses fillet
Transition, the ceramic honeycomb carrier（3）Stomata is densely covered with the axial direction（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, it is described two neighboring
Stomata（3.1）It is provided with next door（3.3）, next door（3.3）On be provided with cellular micropore（3.4）, next door（3.3）On be coated with
Catalyst coat（3.5）.
2. a kind of environment-friendly type exhaust gas filter according to claim 1, it is characterised in that：The stomata（3.1）Hole count
For 600 holes/square inch.
3. a kind of environment-friendly type exhaust gas filter according to claim 1 or 2, it is characterised in that：The next door（3.3）Thickness
Spend for 0.13 ~ 0.14mm.
4. a kind of environment-friendly type exhaust gas filter according to claim 1, it is characterised in that：First screen pack（2）Adopt
It is made of copper monoxide material.
5. a kind of environment-friendly type exhaust gas filter according to claim 1, it is characterised in that：Second screen pack（7）Adopt
It is made of absorbent charcoal material.
6. a kind of coating processes of the honeycomb substrate of environment-friendly type exhaust gas filter, it is characterised in that：The coating processes include with
Lower step：
Step 1: dispensing, activated alumina and platinum, rhodium, palladium precious metal solution are mixed 12 hours, obtain percetage by weight first
30-70% mixed solution, is then incorporated percetage by weight 25-60% rare earth, adds percetage by weight 1-5% activearm
Point（Molecular sieve）, percetage by weight 1-5% high-molecular resin solution, percetage by weight 1-5% aluminium glue, percetage by weight 1-
5% rare earth nitrades, stir agglutination in 6 hours；Its middle rare earth is chloride oxygen scavenging material；Active component is high porosity
Molecular sieve；High-molecular resin solution is poly-vinyl alcohol solution, and its water is 1 with material ratio：20；
Step 2: taking slurry, by calculating the area in honeycomb ceramic carrier next door, and then calculate gluey in required step one
The weight of mixed liquor, then takes out quantitative gluey mixed liquor with container；
Step 3: coating, honeycomb ceramic carrier is placed in the top of a suction device, suction device and honeycomb ceramic carrier
Bottom is close to, and the obtained slurry of step 3 is poured on into the top surface of honeycomb ceramic carrier, slurry jelly does not possess mobility,
Positioned at the surface of honeycomb ceramic carrier, suction device is now opened, in the presence of suction device, gluey slurry is along honeycomb
The next door of ceramic monolith is attracted to bottom surface from top surface；
Step 4: firing, the stove that the honeycomb ceramic carrier that step 4 is obtained is placed in into 550 DEG C is fired 3-5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199731.2A CN107288713A (en) | 2016-04-05 | 2016-04-05 | The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199731.2A CN107288713A (en) | 2016-04-05 | 2016-04-05 | The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107288713A true CN107288713A (en) | 2017-10-24 |
Family
ID=60087839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610199731.2A Pending CN107288713A (en) | 2016-04-05 | 2016-04-05 | The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate |
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| CN (1) | CN107288713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927168A (en) * | 2018-07-16 | 2018-12-04 | 山东艾泰克环保科技股份有限公司 | A kind of natural gas vehicle three-way catalyst and preparation method thereof |
| CN108978415A (en) * | 2018-08-06 | 2018-12-11 | 合肥霞康电子商务有限公司 | A kind of highway engineering plate vibrator |
-
2016
- 2016-04-05 CN CN201610199731.2A patent/CN107288713A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927168A (en) * | 2018-07-16 | 2018-12-04 | 山东艾泰克环保科技股份有限公司 | A kind of natural gas vehicle three-way catalyst and preparation method thereof |
| CN108978415A (en) * | 2018-08-06 | 2018-12-11 | 合肥霞康电子商务有限公司 | A kind of highway engineering plate vibrator |
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Application publication date: 20171024 |