CN107237660A - The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate - Google Patents

The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate Download PDF

Info

Publication number
CN107237660A
CN107237660A CN201610183163.7A CN201610183163A CN107237660A CN 107237660 A CN107237660 A CN 107237660A CN 201610183163 A CN201610183163 A CN 201610183163A CN 107237660 A CN107237660 A CN 107237660A
Authority
CN
China
Prior art keywords
black smoke
ceramic
honeycomb
carrier
exhaust gas
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.)
Pending
Application number
CN201610183163.7A
Other languages
Chinese (zh)
Inventor
华玉娣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610183163.7A priority Critical patent/CN107237660A/en
Publication of CN107237660A publication Critical patent/CN107237660A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5031—Alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic 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
    • F01N3/10—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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, 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
    • F01N3/08—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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The present invention relates to a kind of exhaust gas filter of black smoke good filtration effect.It includes Rose Box（1）, the Rose Box（1）Inside it is provided with the first screen pack（2）, the first ceramic honeycomb carrier（3）, the second ceramic honeycomb carrier（7）With the second screen pack（8）, the coating processes of honeycomb substrate are including Step 1: dispensing；Step 2: taking slurry；Step 3: coating；Step 4: firing.A kind of exhaust gas filter of black smoke good filtration effect of the present invention and the coating processes of honeycomb substrate, under the filtering of the first screen pack, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second screen pack level Four, CO is reacted into by tail gas2、H2Micropore on O, 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

The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate
Technical field
The present invention relates to a kind of exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate, for automobile Tail gas clean-up.Belong to automobile equipment technical field.
Background technology
At present, common car tail-gas filter, is expelled directly out by simple filtering, and is equipped with diesel oil hair Contain black smoke particle in the automobile of motivation, its tail gas, existing exhaust gas filter can not effectively filter black smoke particle, can so make Into environmental pollution.
Existing honeycomb substrate coating processes are, coating slurry is sprayed in ceramic monolith bottom up, and such a technique lacks Be trapped in：Slurry not only coats difficulty greatly in watery, and coating slurry can not fully be combined with carrier, the ceramics after coating Carrier 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 a kind of exhaust gas filter of black smoke good filtration effect and honeybee The coating processes of nest carrier, this exhaust gas filter can also have while CO, HC, NOx pernicious gas in filtering vehicle exhaust Effect filtering black smoke particle, and black smoke particle can progressively burn and aoxidize at high temperature；Coating processes are not only coated uniformly, and are applied The slurry covered can be combined fully with ceramic monolith so that the good filtration effect of ceramic monolith.
The object of the present invention is achieved like this：
A kind of exhaust gas filter of black smoke good filtration effect, including Rose Box, are characterized in：The Rose Box is in cylinder, mistake In filter box the first screen pack, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and second are disposed with along airflow direction The belling of oblique backfin and longitudinal direction, first ceramic honeycomb carrier and the second pottery are provided with screen pack, the first screen pack Porcelain honeycomb substrate structure is identical, and shape is corresponding with Rose Box, and the first ceramic honeycomb carrier is densely covered with stomata in the axial direction, institute The one end for stating stomata is opening, and the other end is provided with closure face, the closure face and open space arrangement, the two neighboring gas Hole, which is provided with next door, next door, to be provided with cellular micropore, and catalyst coat is coated with next door.
A kind of exhaust gas filter of black smoke good filtration effect of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of exhaust gas filter of black smoke good filtration effect of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
A kind of exhaust gas filter of black smoke good filtration effect of the present invention, its first screen pack is made of stainless steel material, Second screen pack is made of absorbent charcoal material.
The coating processes of the honeycomb substrate 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：
A kind of exhaust gas filter of black smoke good filtration effect of the present invention and the coating processes of honeycomb substrate, in the first screen pack, the It is CO, HC, NOx by main component under one ceramic honeycomb carrier, the second ceramic honeycomb carrier and the filtering of the second screen pack level Four Tail gas, reacts into CO2、H2O、N2And O2, while the micropore on next door can effectively filter the black smoke particle in waste gas, and in catalysis Black smoke particle can be burned off in the presence of agent coating, further increase tail gas clean-up effect；Added in dispensing as viscous Mixed liquor after the poly-vinyl alcohol solution of mixture and the aluminium glue as adsorbent, therefore stirring jelly, and in matching step three Suction device, slurry can be caused to be coated since the top surface of ceramic monolith, with it is existing since ceramic monolith bottom apply The technique for covering watery slurry is compared, and slurry coating of the present invention is uniform, and the slurry of coating can be combined fully with ceramic monolith so that pottery The good filtration effect of ceramic carrier.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the exhaust gas filter of black smoke good filtration effect of the invention.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the schematic cross-section of the first ceramic honeycomb carrier of the present invention.
Fig. 4 is the partial axial section figure of the first ceramic honeycomb carrier of the present invention.
Fig. 5 is the structural representation in the next door of the first ceramic honeycomb carrier of the present invention.
Fig. 6 is the structural representation of the first screen pack of the present invention.
Fig. 7 is the expanded view of the first screen pack of the present invention.
The enlarged drawing that Fig. 8 is A in Fig. 6.
In figure：
Rose Box 1,
First screen pack 2,
Backfin 2.1,
Belling 2.2,
First 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 ceramic honeycomb carrier 7,
Second screen pack 8,
Gas channel 9.
Embodiment
Referring to Fig. 1-8, the present invention relates to a kind of exhaust gas filter of black smoke good filtration effect, it includes Rose Box 1, first Screen pack 2, the first ceramic honeycomb carrier 3, the second ceramic honeycomb carrier 7 and the second screen pack 8, the left end of Rose Box 1 is tail gas Import 4, right-hand member is offgas outlet 5, first screen pack 2, the first ceramic honeycomb carrier 3, the second ceramic honeycomb carrier 7 and the Two screen packs 8 are arranged in Rose Box 1, and the first screen pack 2 is at inlet exhaust gas 4, and the second screen pack 8 is close to offgas outlet 5 Place.
The Rose Box 1 is in cylinder, and first ceramic honeycomb carrier 3 is identical with the structure of the second honeycomb substrate 7, and Shape is corresponding with crossing filtering case 1, and the first ceramic honeycomb carrier 3 is densely covered with stomata 3.1, the one of the stomata 3.1 in the axial direction Hold as opening 3.6, the other end is provided with closure face 3.2, the closure face 3.2 and the arranged for interval of opening 3.6, described two neighboring Stomata 3.1, which is provided with next door 3.3, next door 3.3, to be provided with cellular micropore 3.4, and catalyst coat is coated with next door 3.3 3.5。
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 stainless steel material, and the oblique He of backfin 2.1 is provided with the first screen pack 2 The belling 2.2 of longitudinal direction, Fig. 7 is the expanded view of the first screen pack 2, axial direction when laterally being rolled for the first screen pack 2 in way, is indulged To radial direction when being rolled for the first screen pack 2, in use, being arranged on after the first screen pack 2 is wound in Rose Box 1, backfin 2.1 and the body of the first screen pack 2 formation gas channel 9, the intersection of gas channel 9 forms multiple rhombus expansion slots, and every One segment distance forms a cut-off by belling 2.2, when motor exhaust blows to gas channel 9, and a part is along 9 points of gas channel Stream a, part passes through the bulk filter of the first screen pack 2, and the partial tail gas shunted along gas channel 9 is passing through expansion slot and cut-off When can produce different degrees of turbulent flow, form the shunting of multiple directions, the black smoke particle in tail gas is fully captured in the On the body of one screen pack 2, when black smoke granule capturing to it is a certain amount of when, can burn to form CO at a high temperature of engine exhaust2, from And realize the function of filter regeneration
Second screen pack 8 is made of absorbent charcoal material.Second screen pack 8 can be with for the screen pack with activated carbon First screen pack 2 and the untreated CO gas of the second ceramic honeycomb carrier 7 are adsorbed.
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 subsequently into the first ceramic honeycomb carrier 3, enters from the opening 3.6 of stomata 3.1, because stomata 3.1 exists 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 the first ceramic honeycomb carrier 3 enters Second ceramic honeycomb carrier 7, carries out three-stage filtration, the same secondary filtration of work principle of filter, from giving up that the second ceramic honeycomb carrier 7 is discharged Gas enters the second screen pack 8 and carries out level Four filtering, 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 exhaust gas filter of black smoke good filtration effect, including Rose Box（1）, it is characterised in that：The Rose Box（1）It is in Cylinder, Rose Box（1）It is interior to be disposed with the first screen pack along airflow direction（2）, the first ceramic honeycomb carrier（3）, second Ceramic honeycomb carrier（7）With the second screen pack（8）, the first screen pack（2）On be provided with oblique backfin（2.1）With the pressure of longitudinal direction It is convex（2.2）, first ceramic honeycomb carrier（3）With the second ceramic honeycomb carrier（7）Structure is identical, and shape and Rose Box （1）Correspondence, the first ceramic honeycomb carrier（3）Stomata is densely covered with the axial direction（3.1）, the stomata（3.1）One end to open Mouthful（3.6）, the other end is provided with closure face（3.2）, the closure face（3.2）And opening（3.6）Arranged for interval, described adjacent two Individual 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）Upper coating There is catalyst coat（3.5）.
2. a kind of exhaust gas filter of black smoke good filtration effect according to claim 1, it is characterised in that：The stomata （3.1）Hole count be 600 holes/square inch.
3. a kind of exhaust gas filter of black smoke good filtration effect according to claim 1 or 2, it is characterised in that：It is described every Wall（3.3）Thickness be 0.13 ~ 0.14mm.
4. a kind of exhaust gas filter of black smoke good filtration effect according to claim 1, it is characterised in that：First mistake Filter screen（2）It is made of stainless steel material.
5. a kind of exhaust gas filter of black smoke good filtration effect according to claim 1, it is characterised in that：Second mistake Filter screen（8）It is made of absorbent charcoal material.
6. a kind of coating processes of the honeycomb substrate of the exhaust gas filter of black smoke good filtration effect, it is characterised in that：The coating Technique comprises 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.
CN201610183163.7A 2016-03-29 2016-03-29 The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate Pending CN107237660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610183163.7A CN107237660A (en) 2016-03-29 2016-03-29 The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610183163.7A CN107237660A (en) 2016-03-29 2016-03-29 The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate

Publications (1)

Publication Number Publication Date
CN107237660A true CN107237660A (en) 2017-10-10

Family

ID=59982709

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610183163.7A Pending CN107237660A (en) 2016-03-29 2016-03-29 The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate

Country Status (1)

Country Link
CN (1) CN107237660A (en)

Similar Documents

Publication Publication Date Title
CN105756754A (en) Tail gas filter
CN107489498A (en) The exhaust gas filter of good purification and the coating processes of honeycomb substrate
CN107297139A (en) The coating processes of trapezoidal exhaust gas filter and honeycomb substrate
CN107288713A (en) The coating processes of environment-friendly type exhaust gas filter and honeycomb substrate
CN107304697A (en) The coating processes of exhaust purifier and honeycomb substrate
CN107514303A (en) The coating processes of exhaust gas filter and honeycomb substrate
CN107237660A (en) The exhaust gas filter of black smoke good filtration effect and the coating processes of honeycomb substrate
CN107304694A (en) The coating processes of noise reducing type exhaust gas filter and honeycomb substrate
CN107227996A (en) The exhaust gas filter of the good purification of effective denitrification
CN106481393A (en) The exhaust gas filter of black smoke good filtration effect
CN106481386A (en) The exhaust gas filter of good purification
CN107461233A (en) Coating processes without black smoke exhaust gas filter and honeycomb substrate
CN107227994A (en) The coating processes of diesel exhaust filtration device and honeycomb substrate
CN107288723A (en) The coating processes of automobile exhaust purifier and honeycomb substrate
CN107201933A (en) The coating processes of cylindrical exhaust gas filter and honeycomb substrate
CN107514298A (en) The coating processes of fire extinguishing type exhaust gas filter and honeycomb substrate
CN107489497A (en) The big trapezoidal ceramic honeycomb carrier of filter area
CN107542530A (en) The exhaust gas filter of good purification
CN107542531A (en) The exhaust gas filter of black smoke good filtration effect
CN107461246A (en) Kidney ellipsoid ceramic honeycomb carrier with ripple pass
CN106481389A (en) The exhaust gas filter of good purification
CN107542543A (en) The anti-oxidant exhaust gas filter of environment-friendly type
CN106481405A (en) The exhaust gas filter of black smoke good filtration effect
CN104265420A (en) Exhaust purifying filter with fine purifying effect
CN104265419A (en) Environment-friendly exhaust filter

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: 20171010