CN107299848A - The high automobile exhaust purifier of discharge standard - Google Patents

The high automobile exhaust purifier of discharge standard Download PDF

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Publication number
CN107299848A
CN107299848A CN201610233849.2A CN201610233849A CN107299848A CN 107299848 A CN107299848 A CN 107299848A CN 201610233849 A CN201610233849 A CN 201610233849A CN 107299848 A CN107299848 A CN 107299848A
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CN
China
Prior art keywords
subtube
automobile exhaust
rose box
exhaust purifier
ceramic honeycomb
Prior art date
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Pending
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CN201610233849.2A
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Chinese (zh)
Inventor
华玉娣
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Individual
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Individual
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Priority to CN201610233849.2A priority Critical patent/CN107299848A/en
Publication of CN107299848A publication Critical patent/CN107299848A/en
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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
    • F01N3/022—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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F01N3/18—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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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]
    • 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
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • 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
    • 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
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • 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
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Landscapes

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

Abstract

The present invention relates to a kind of high automobile exhaust purifier of discharge standard.It includes Rose Box（1）, Rose Box（1）Include superposed main pipeline（2）There is the subtube of two bifurcateds with bottom（5）, subtube（5）Inside it is provided with degassing conduits（4）And ceramic honeycomb carrier（3）, Rose Box（1）Offgas outlet at be additionally provided with spray chamber（7）And selective catalytic reduction converter（8）.A kind of high automobile exhaust purifier of discharge standard of the present invention, using degassing conduits and ceramic honeycomb carrier double-filtration, CO is reacted into by tail gas2、H2O, while the micropore on next door can effectively filter the carbon soot particles in waste gas, and carbon soot particles can be burned off in the presence of catalyst coat, with regeneration function；It is diverted to using main pipeline after subtube, filter area is increased in limited space, oxynitrides is removed in selective catalytic reduction converter, the tail gas of discharge meets state V standard.

Description

The high automobile exhaust purifier of discharge standard
Technical field
The present invention relates to a kind of high automobile exhaust purifier of discharge standard, for purifying vehicle exhaust.Belong to automobile to set Standby technical field.
Background technology
At present, common automobile exhaust purifier, is using catalyst and NO, NO in vehicle exhaust2Reacted with CO, it is raw Into CO2And N2Both uncontaminated gases, but the automobile of Diesel engine is equipped with, due to containing in the tail gas of Diesel engine Carbon soot particles, existing automobile exhaust purifier can not effectively filter carbon soot particles, can so cause environmental pollution；It is simultaneously existing Clarifier in limited space due to it cannot be guaranteed that well filter area, therefore tail gas clean-up not exclusively, meeting after discharge Pollute environment；With the progressively implementation of state's V standards, due to also there is substantial amounts of nitrogen oxides in above-mentioned tail gas, therefore it is existing Automobile tail gas filtering device can not meet requirement.
The content of the invention
It is above-mentioned not enough there is provided a kind of high automobile exhaust purifier of discharge standard it is an object of the invention to overcome, this CO, HC, the NO of automobile exhaust purifier in high efficiency filter vehicle exhaustxAlso carbon soot particles can be filtered while pernicious gas, And carbon soot particles can progressively burn and aoxidize at high temperature so that ceramic honeycomb carrier has regeneration function；And limited In space, increase filter area, finally in the presence of selective catalytic reduction converter, nitrogen oxides be reduced into nitrogen and Water, meets state's V standards.
The object of the present invention is achieved like this：
A kind of high automobile exhaust purifier of discharge standard, including Rose Box, it is characterised in that：The Rose Box include be located at The subtube of two bifurcateds, the axial line of described two subtubes and the axial line of main pipeline point are arranged at the main pipeline on top and bottom Not Cheng 45° angle, is disposed with degassing conduits and ceramic honeycomb carrier, the ceramic honeycomb along airflow direction in the subtube Carrier is corresponding with the inwall of subtube, and ceramic honeycomb carrier is densely covered with stomata in the axial direction, and one end of the stomata is Opening, the other end is provided with closure face, the closure face and open space arrangement, be provided between the two neighboring stomata every It is provided with wall, next door in cellular micropore, is coated with catalyst coat, the offgas outlet of the Rose Box and also sets on next door It is equipped with spray chamber and selective catalytic reduction converter, spraying chamber interior walls and is provided with nozzle, nozzle injection urea liquid, selection The catalyst that property catalytic reduction converter is used is vanadium, tungsten or titanium.
A kind of high automobile exhaust purifier of discharge standard of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of high automobile exhaust purifier of discharge standard 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 high automobile exhaust purifier of discharge standard of the present invention, using degassing conduits and ceramic honeycomb carrier double-filtration, It is CO, HC, NO by main componentxTail gas, react into CO2、H2O、N2And O2, while the micropore on next door can effectively filter waste gas In carbon soot particles, and carbon soot particles can be burned off in the presence of catalyst coat so that ceramic honeycomb carrier has again Raw function, can proceed the filtering and purification of carbon soot particles, it is ensured that the diesel motor exhaust of discharge does not pollute the environment； And it is diverted to using main pipeline after subtube, increases filter area in limited space so that the purification of vehicle exhaust Effect is more preferable.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the high automobile exhaust purifier of discharge standard of the invention.
Fig. 2 is the schematic cross-section of the ceramic honeycomb carrier of the present invention.
Fig. 3 is the partial axial section figure of the ceramic honeycomb carrier of the present invention.
Fig. 4 is the structural representation in the next door of the ceramic honeycomb carrier of the present invention.
In figure：
Rose Box 1,
Main pipeline 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,
Degassing conduits 4,
Subtube 5,
Tail gas 6,
Spray chamber 7,
Selective catalytic reduction converter 8.
Embodiment
Referring to Fig. 1-4, the present invention relates to a kind of high automobile exhaust purifier of discharge standard, it includes Rose Box 1, described The include superposed cylindrical primary duct 2 and bottom of Rose Box 1 have the cylindrical subtube 5 of two bifurcateds, described two The axial line of subtube 5 is in be disposed with 45° angle, the subtube 5 along airflow direction respectively with the axial line of main pipeline 2 Degassing conduits 4 and ceramic honeycomb carrier 3, the ceramic honeycomb carrier 3 are corresponding with the inwall of subtube 5, 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.
Spray chamber 7 and selective catalytic reduction converter 8, spray chamber 7 are additionally provided with the offgas outlet of the Rose Box 1 Be provided with nozzle on inwall, nozzle injection urea liquid, the catalyst that selective catalytic reduction converter 8 is used for vanadium, tungsten or Titanium, selective catalytic reduction converter 8, also referred to as SCR, its reducing agent used are the urea liquid that spray chamber 7 sprays, urine Element is decomposed into NH at high temperature after adding water3And CO2, with the NO and NO in exhaust gas from diesel vehicle2By chemical reaction, produce nitrogen and NO and NO in 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.
Operation principle：The waste gas with carbon soot particles of Diesel engine discharge is further separated into subtube 5 through main pipeline 2, By-pass filtration is carried out by degassing conduits 4, secondary filtration is carried out subsequently into ceramic honeycomb carrier 3, tail gas is opened from stomata 3.1 Mouth 3.6 enters, and because stomata 3.1 is opening 3.6 at one end, and is then closure face 3.2 in the other end, therefore waste gas can pass through band There is the next door 3.3 of micropore 3.4, then discharged from the opening 3.6 of adjacent air holes 3.1, because the diameter of carbon soot particles is compared with micropore 3.4 Greatly, the carbon soot particles therefore in waste gas will be caught on next door 3.3 by filtering, and air-flow is then passed through from micropore 3.4, from ceramic honeycomb The waste gas that carrier 3 is discharged enters low-temperature catalyzed area 7 and carries out three-stage filtration, further the pernicious gas of purification residual.
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 Carbon soot particles can progressively burn and aoxidize, and the purifying rate of carbon soot particles about reaches more than 85%, when reaction temperature reaches that 500 take the photograph Catalyst and carbon soot particles reaction so as to burn completely when family name spends（Catalysis burning）, now the purifying rate of carbon soot particles is reachable More than 90%.

Claims (3)

1. a kind of high automobile exhaust purifier of discharge standard, including Rose Box（1）, it is characterised in that：The Rose Box（1）'s Including superposed main pipeline（2）There is the subtube of two bifurcateds with bottom（5）, described two subtubes（5）Axial line With main pipeline（2）Axial line respectively be in 45° angle, the subtube（5）It is interior to be disposed with degassing conduits along airflow direction（4） And ceramic honeycomb carrier（3）, the ceramic honeycomb carrier（3）With subtube（5）Inwall it is corresponding, and 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, the two neighboring stomata（3.1）Between be provided with every Wall（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）, The Rose Box（1）Offgas outlet at be additionally provided with spray chamber（7）And selective catalytic reduction converter（8）, spray chamber（7） Nozzle, nozzle injection urea liquid, selective catalytic reduction converter are provided with inwall（8）The catalyst used is vanadium, tungsten Or titanium.
2. a kind of high automobile exhaust purifier of discharge standard according to claim 1, it is characterised in that：The stomata （3.1）Hole count be 600 holes/square inch.
3. a kind of high automobile exhaust purifier of discharge standard according to claim 1 or 2, it is characterised in that：It is described every Wall（3.3）Thickness be 0.13 ~ 0.14mm.
CN201610233849.2A 2016-04-16 2016-04-16 The high automobile exhaust purifier of discharge standard Pending CN107299848A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104909A (en) * 2017-12-27 2018-06-01 高飞 A kind of vehicle exhaust three-level filter device
CN108561210A (en) * 2018-01-24 2018-09-21 大连海事大学 Marine diesel pollutant emission processing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104909A (en) * 2017-12-27 2018-06-01 高飞 A kind of vehicle exhaust three-level filter device
CN108561210A (en) * 2018-01-24 2018-09-21 大连海事大学 Marine diesel pollutant emission processing system

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