CN107227996A - The exhaust gas filter of the good purification of effective denitrification - Google Patents

The exhaust gas filter of the good purification of effective denitrification Download PDF

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Publication number
CN107227996A
CN107227996A CN201610170451.9A CN201610170451A CN107227996A CN 107227996 A CN107227996 A CN 107227996A CN 201610170451 A CN201610170451 A CN 201610170451A CN 107227996 A CN107227996 A CN 107227996A
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CN
China
Prior art keywords
exhaust gas
screen pack
ceramic honeycomb
honeycomb carrier
rose box
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
CN201610170451.9A
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Chinese (zh)
Inventor
华玉娣
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610170451.9A priority Critical patent/CN107227996A/en
Publication of CN107227996A publication Critical patent/CN107227996A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F01N3/02—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
    • 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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases
    • 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
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/22—Selection of materials for exhaust purification used in non-catalytic purification apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

The present invention relates to a kind of exhaust gas filter of the good purification of effective denitrification.It includes Rose Box（1）, the Rose Box（1）It is interior to be disposed with the first screen pack along airflow direction（2）, the first ceramic honeycomb carrier（3）, the second ceramic honeycomb carrier（7）With the second screen pack（8）, Rose Box（1）Offgas outlet at be additionally provided with spray chamber（9）And selective catalytic reduction converter（10）.A kind of exhaust gas filter of the good purification of effective denitrification of the present invention, 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、H2O and 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, and oxynitrides is finally removed in selective catalytic reduction converter, and the tail gas of discharge meets state V standard.

Description

The exhaust gas filter of the good purification of effective denitrification
Technical field
It is net for vehicle exhaust the present invention relates to a kind of exhaust gas filter of the good purification of effective denitrification Change.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；With the progressively implementation of state's V standards, due to also there is substantial amounts of nitrogen oxides, therefore existing automobile in above-mentioned tail gas Tail gas filter can not meet requirement.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of tail of the good purification of effective denitrification Air filter, this exhaust gas filter can also filter black smoke while CO, HC, NOx pernicious gas in filtering vehicle exhaust Grain, and black smoke particle can progressively burn and aoxidize at high temperature, finally in the presence of selective catalytic reduction converter, nitrogen oxygen Compound is reduced into nitrogen and water, meets state's V standards.
The object of the present invention is achieved like this：
A kind of exhaust gas filter of the good purification of effective denitrification, including Rose Box, are characterized in：The Rose Box In cylinder, the first screen pack, the first ceramic honeycomb carrier, the second ceramic honeycomb are disposed with along airflow direction in Rose Box Carrier and the second screen pack, first ceramic honeycomb carrier are identical with the second ceramic honeycomb carrier structure, and shape and filtering Case correspondence, the first ceramic honeycomb carrier is 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, next door and are provided with cellular Micropore, be coated with catalyst coat, the offgas outlet of the Rose Box on next door and be additionally provided with spray chamber and selectivity is urged Change and nozzle is provided with reduction converter, spraying chamber interior walls, nozzle injection urea liquid, selective catalytic reduction converter is used Catalyst be vanadium, tungsten or titanium.
A kind of exhaust gas filter of the good purification of effective denitrification of the present invention, the hole count of its stomata for 600 holes/ Square inch.
A kind of exhaust gas filter of the good purification of effective denitrification of the present invention, the thickness in its next door for 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.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of exhaust gas filter of the good purification of effective denitrification of the present invention, in the first screen pack, the first ceramic honeybee Nest carrier, the second ceramic honeycomb carrier and the second screen pack level Four filtering under, by main component be CO, HC, NOx tail gas, instead Should be into CO2、H2O、N2And O2, while the micropore on next door can effectively filter the black smoke particle in waste gas, and in catalyst coat The lower black smoke particle of effect can be burned off, and further increase tail gas clean-up effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the exhaust gas filter of the good purification of effective denitrification of the present 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.
In figure：
Rose Box 1,
First screen pack 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,
Spray chamber 9,
Selective catalytic reduction converter 10.
Embodiment
Referring to Fig. 1-5, the present invention relates to a kind of exhaust gas filter of the good purification of effective denitrification, it includes Rose Box 1, the first screen pack 2, the first ceramic honeycomb carrier 3, the second ceramic honeycomb carrier 7 and the second screen pack 8, Rose Box 1 Left end be inlet exhaust gas 4, right-hand member is offgas outlet 5, first screen pack 2, the first ceramics of ceramic honeycomb carrier 3, second The screen pack 8 of honeycomb substrate 7 and second is arranged in Rose Box 1, and the first screen pack 2 is at inlet exhaust gas 4, the second screen pack 8 At offgas outlet 5, the Rose Box 1 is in cylinder, the knot of the honeycomb substrate 7 of the first ceramic honeycomb carrier 3 and second Structure is identical, and shape is corresponding with crossing filtering case 1, and the first ceramic honeycomb carrier 3 is densely covered with stomata 3.1, the gas in the axial direction The one end in hole 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, institute State two neighboring stomata 3.1 and be provided with next door 3.3, next door 3.3 and be provided with cellular micropore 3.4, be coated with next door 3.3 Catalyst coat 3.5.
Spray chamber 9 and selective catalytic reduction converter 10, spray chamber are additionally provided with the offgas outlet of the Rose Box 1 Nozzle is provided with 9 inwalls, nozzle sprays urea liquid, and the catalyst that selective catalytic reduction converter 10 is used is vanadium, tungsten Or titanium, selective catalytic reduction converter 10, also referred to as SCR, its reducing agent used are that the urea that spray chamber 9 sprays is molten Liquid, urea is decomposed into NH at high temperature after adding water3And CO2, with the NO and NO in exhaust gas from diesel vehicle2By chemical reaction, nitrogen is produced NO and NO in gas and water, reduction exhaust gas from diesel vehicle2Discharge
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 8 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 8 Can be to the first screen pack 2 and the untreated CO gas of the second ceramic honeycomb carrier 7 for the screen pack with activated carbon Adsorbed.
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 (5)

1. a kind of exhaust gas filter of the good purification of effective denitrification, including Rose Box（1）, it is characterised in that：Institute State Rose Box（1）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）, the second ceramic honeycomb carrier（7）With the second screen pack（8）, first ceramic honeycomb carrier（3）With the second ceramics Honeycomb substrate（7）Structure is identical, and shape and Rose Box（1）Correspondence, the first ceramic honeycomb carrier（3）It is densely covered with the axial direction 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）It is provided with next door（3.3）, next door（3.3）On be provided with In cellular micropore（3.4）, next door（3.3）On be coated with catalyst coat（3.5）, the Rose Box（1）Offgas outlet Place is additionally provided with spray chamber（9）And selective catalytic reduction converter（10）, spray chamber（9）Nozzle, nozzle are provided with inwall Spray urea liquid, selective catalytic reduction converter（10）The catalyst used is vanadium, tungsten or titanium.
2. a kind of exhaust gas filter of the good purification of effective denitrification according to claim 1, its feature exists In：The stomata（3.1）Hole count be 600 holes/square inch.
3. a kind of exhaust gas filter of the good purification of effective denitrification according to claim 1 or 2, its feature It is：The next door（3.3）Thickness be 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（8）Adopt It is made of absorbent charcoal material.
CN201610170451.9A 2016-03-24 2016-03-24 The exhaust gas filter of the good purification of effective denitrification Pending CN107227996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610170451.9A CN107227996A (en) 2016-03-24 2016-03-24 The exhaust gas filter of the good purification of effective denitrification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610170451.9A CN107227996A (en) 2016-03-24 2016-03-24 The exhaust gas filter of the good purification of effective denitrification

Publications (1)

Publication Number Publication Date
CN107227996A true CN107227996A (en) 2017-10-03

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Family Applications (1)

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CN201610170451.9A Pending CN107227996A (en) 2016-03-24 2016-03-24 The exhaust gas filter of the good purification of effective denitrification

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608769A (en) * 2019-02-23 2020-09-01 彭志军 Motor vehicle three-way catalytic converter with ultrasonic tail gas decomposition function
CN113617224A (en) * 2021-08-23 2021-11-09 湖州乙戈环保设备有限公司 Treatment device and treatment method for nitrogen oxide waste gas for high-speed wire enamelling machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608769A (en) * 2019-02-23 2020-09-01 彭志军 Motor vehicle three-way catalytic converter with ultrasonic tail gas decomposition function
CN113617224A (en) * 2021-08-23 2021-11-09 湖州乙戈环保设备有限公司 Treatment device and treatment method for nitrogen oxide waste gas for high-speed wire enamelling machine

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Application publication date: 20171003