CN107448268A - A kind of complex carries automobile three-way catalysts - Google Patents
A kind of complex carries automobile three-way catalysts Download PDFInfo
- Publication number
- CN107448268A CN107448268A CN201710947791.2A CN201710947791A CN107448268A CN 107448268 A CN107448268 A CN 107448268A CN 201710947791 A CN201710947791 A CN 201710947791A CN 107448268 A CN107448268 A CN 107448268A
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- CN
- China
- Prior art keywords
- carrier
- air
- flow
- way catalysts
- automobile
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- 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.)
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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
- F01N3/08—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
-
- 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
- F01N3/2832—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support granular, e.g. pellets
-
- 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
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
-
- 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
- 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
Abstract
The invention discloses a kind of complex carries automobile three-way catalysts, the complex carries automobile three-way catalysts are provided with two carriers, and carrier one and carrier two are hollow-core construction, and filled with what platinum, rhodium, palladium metal silk catalyst of aluminum oxide ceramic, complex carries structure increases the area of catalytic action, improves catalytic efficiency.Air-flow carries out first time catalytic reaction processing in carrier one, and carrier one divides for three sections of cylindrical section, circle tripe section and conical section, it is ensured that air-flow steady flow in carrier one；Air-flow carries out second of catalytic reaction processing in carrier two, it is ensured that the discharge meet the requirement of environmental protection of automobile harmful substance, carrier two are in cylindrical structure, and the catalytic way of carrier two is radially to be catalyzed；When being radially catalyzed, unit air-flow is substantially increased by the effective area of carrier, not only increases the catalytic efficiency of unit area, and improves the uniformity of air-flow, and favourable effect is also played to reducing flow resistance.
Description
Technical field
The present invention relates to a kind of automobile exhaust system purifier, more particularly to a kind of complex carries automobile three-way catalysts.
Background technology
As automobile quantity is more and more, its harm to global environment is also increasing, and automobile exhaust pollution has been at present
Through one of main pollution sources as China's air.In China, automobile emission regulation perfects not as European and American developed countries, and
Vehicle condition is poor, the blowdown flow rate of more American-European car at the same level be higher by one times it is even more more.In big city, vehicle is various, traffic congestion, vapour
Car is regular to there is situations such as idling, frequently brake, and exacerbates the pollution of vehicle exhaust, so control tail gas blowdown is very
It is necessary.
Automobile three-way catalytic apparatus is mounted in most important outer purifier in automobile exhaust system, and it arranges automobile
Pernicious gas CO, HC and NOx of releasing are changed into nontoxic carbon dioxide, water and nitrogen by oxidation and reduction.
Control of its appearance to auto-pollution serves obvious action, is that auto-pollution post-processes very effective measure.Tradition
The catalytic way of ternary catalyzing unit is axial catalysis, and axially catalysis is confined to the position of cavity volume internal diameter size, carrier, and air-flow is often
The center of carrier axial direction is concentrated on, the pressure loss is larger, and carrier center flow velocity is uneven, and tradition three after long-term use
The carrier of first catalyst converter can be blocked by some pollution particles, once catalyst converter carrier blocks, can cause to be vented not smooth, back pressure liter
Height, Tail Pipe Temperature steeply rise.So on the premise of automobile other performances are not influenceed, reduce the pressure of tail gas discharge system
Loss is the direction that current scholars study.
The content of the invention
To solve the above problems, the invention provides a kind of complex carries automobile three-way catalysts, the complex carries automobile ternary
Catalyst converter is provided with two carriers, and carrier one and carrier two are hollow-core construction, and filled with aluminum oxide ceramic what platinum,
Rhodium, palladium metal silk catalyst, complex carries structure increase the area of catalytic action, improve catalytic efficiency.Air-flow is in carrier one
Middle progress first time catalytic reaction processing, carrier one divide for three sections of cylindrical section, circle tripe section and conical section, it is ensured that air-flow is in carrier one
Interior steady flow；Air-flow carries out second of catalytic reaction processing in carrier two, it is ensured that the discharge of automobile harmful substance reaches ring
Guaranteed request, carrier two are in cylindrical structure, and the catalytic way of carrier two is radially to be catalyzed；When being radially catalyzed, unit air-flow passes through load
The effective area of body substantially increases, and not only increases the catalytic efficiency of unit area, and improves the uniformity of air-flow, to subtracting
Small flow resistance also plays favourable effect.
The technical solution adopted for the present invention to solve the technical problems is：A kind of complex carries automobile three-way catalysts, including
Housing, damping sealing pad, carrier, catalyst converter, housing inlet end are connected by air inlet Taper Pipe with air inlet pipe, and housing outlet side passes through
Escape pipe cone connects with escape pipe；Carrier includes carrier one and carrier two, and carrier one and carrier two are hollow-core construction, and fixed
In housing cavity；Mozzle is fixed in housing, and mozzle one end is connected with air inlet Taper Pipe, the mozzle other end then with carrier
One connection, air-flow enter carrier one from mozzle；Carrier one divides for cylindrical section, justifies three sections of tripe section and conical section, is filled out in carrier one
Filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst；Carrier two is cylindrical structure, outside the cylinder of carrier two
Space between wall and cylinder inner wall is filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst；The He of carrier one
It is provided with U between carrier two, air-flow enters after the catalytic reaction of carrier one base for entering U from mozzle
It is further separated into after passage in two long edge channels of U, enters back into carrier two after carrying out catalytic reaction and enter outlet
Pipe cone is discharged from escape pipe.
Carrier one divides for cylindrical section, justifies three sections of tripe section and conical section, before undressed air-flow initially enters carrier one
Section cylindrical section, leading portion are designed as cylinder namely cylindrical section, because the gas emitted has certain pressure, its can be made suitable
Profit carries out catalytic reaction by cylindrical section；Because cylindrical section has certain drag effect to air-flow, when air-flow enters carrier one
Interlude when, the power of air-flow reduces, and then interlude is designed as justifying tripe shape namely circle tripe section by the present invention, so that bringing about the desired sensation
Stream can be stablized smoothly by circle tripe section；Due to the pressure release by circle tripe section, the rear end that air-flow enters carrier one is entered to it
One step current limliting, so as to which rear end is designed as into cone i.e. conical section.
Further, the long side of U is provided with deflector with the junction of carrier one.Deflector is designed with beneficial to air-flow
Enter from U in carrier two.
Further, mozzle is bell-mouth structure of air；When air-flow passes through air inlet tubular expansion cone angle, a fluid stream and expansion are angular
Into whirlpool amount it is less, when flowing to deflector with air-flow of these whirlpools, the whirlpool formed with a fluid stream and deflector offsets, from
And improve the uniformity of air-flow.
Further, the inwall of carrier one and carrier two scribbles loose porous coating, and coated porous structure increases
The roughness of the inner wall surface of carrier one and carrier two, increases catalytic reaction area, improves the catalytic capability of catalyst converter, energy
Adapt to the various operating modes of motor vehicle exhaust emission；And coating surface can store up oxygen, and can is auxiliary covered with platinum, rhodium, palladium precious metal catalyst layer
Major catalyst is helped to be reacted completely.
Further, heat shield is housed outside housing, damage caused by preventing high temperature to external radiation and external impact or dabbling
It is bad.
Further, damping sealing pad is additionally provided between housing and carrier, plays damping, relief of thermal stress, insulation and sealing
Effect.
Beneficial effects of the present invention：1）Compared with conventional catalyst device, complex carries automobile three-way catalysts of the invention are provided with
Two carriers, and carrier one and carrier two are hollow-core construction, and it is filled with aluminum oxide ceramic and platinum, rhodium, palladium metal silk
Catalyst.2）Cylindrical section, circle tripe section and the design of conical section three-stage of carrier one, both ensure that air-flow had enough in carrier one
Residence time so as to carrying out catalytic reaction, also ensure that air-flow is stable in carrier one and smoothly pass through.3）Carrier two is in circle
Barrel structure, the catalytic way of carrier two are radially to be catalyzed；When being radially catalyzed, unit air-flow is increased by the effective area of carrier
Greatly, the catalytic efficiency of unit area is not only increased, and improves the uniformity of air-flow, is also played favorably to reducing flow resistance
Effect； 4）4）Deflector is bell-mouth structure of air, and when air-flow passes through the angle of flare, the whirlpool amount of a fluid stream and angle of flare formation is less,
When flowing to deflector with air-flow of these whirlpools, the whirlpool formed with a fluid stream and deflector offsets, so as to improve air-flow
Uniformity.
Brief description of the drawings
Fig. 1 is a kind of structural representation of complex carries automobile three-way catalysts of the present invention.
In figure, 1, air inlet pipe；2nd, housing；3rd, air inlet Taper Pipe；4th, mozzle；5th, mozzle；6th, carrier two；7th, carrier one；
8th, escape pipe is bored；9th, escape pipe；10th, damping sealing pad；11st, coating；12nd, Catalytic Layer；13rd, U, 14, U length
Side, 15, deflector, 71, cylindrical section, 72, circle tripe section, 73, conical section.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is refer to, this specific embodiment provides a kind of complex carries automobile three-way catalysts, including housing, damping sealing
Pad, carrier, catalyst converter, housing inlet end are connected by air inlet Taper Pipe with air inlet pipe, and housing outlet side is bored with going out by escape pipe
Tracheae connects；Carrier includes carrier one and carrier two, and carrier one and carrier two are hollow-core construction, and are fixed on housing cavity；
Mozzle is fixed in housing, and mozzle one end is connected with air inlet Taper Pipe, and the mozzle other end then connects with carrier one, air-flow
Enter carrier one from mozzle；Carrier one divides for cylindrical section, justifies three sections of tripe section and conical section, and three oxidations two are filled with carrier one
Aluminium ceramic particle and platinum, rhodium, palladium metal silk catalyst；Carrier two is cylindrical structure, the cylinder outer wall and cylinder inner wall of carrier two
Between space be filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst；Set between carrier one and carrier two
There is a U, air-flow is diverted into after the base passage for entering U is entered after the catalytic reaction of carrier one from mozzle
In two long edge channels for entering U, enter back into carrier two after carrying out catalytic reaction and enter escape pipe cone from escape pipe
Discharge.
Carrier one divides for cylindrical section, justifies three sections of tripe section and conical section, before undressed air-flow initially enters carrier one
Section cylindrical section, leading portion are designed as cylinder namely cylindrical section, because the gas emitted has certain pressure, its can be made suitable
Profit carries out catalytic reaction by cylindrical section；Because cylindrical section has certain drag effect to air-flow, when air-flow enters carrier one
Interlude when, the power of air-flow reduces, and then interlude is designed as justifying tripe shape namely circle tripe section by the present invention, so that bringing about the desired sensation
Stream can be stablized smoothly by circle tripe section；Due to the pressure release by circle tripe section, the rear end that air-flow enters carrier one is entered to it
One step current limliting, so as to which rear end is designed as into cone i.e. conical section.
In one more preferably embodiment, long side and the junction of carrier one of U are provided with deflector.The design of deflector
Be advantageous to air-flow from U to enter in carrier two.
In one more preferably embodiment, mozzle is bell-mouth structure of air；When air-flow passes through air inlet tubular expansion cone angle, a fluid stream
The whirlpool amount formed with the angle of flare is less, when flowing to deflector with air-flow of these whirlpools, the whirlpool formed with a fluid stream and deflector
Whirlpool offsets, so as to improve the uniformity of air-flow.
In one more preferably embodiment, the inwall of carrier one and carrier two scribbles loose porous coating, coated porous
Structure increases the roughness of the inner wall surface of carrier one and carrier two, increases catalytic reaction area, improves catalyst converter
Catalytic capability, adapt to the various operating modes of motor vehicle exhaust emission；, can and coating surface is covered with platinum, rhodium, palladium precious metal catalyst layer
Oxygen is stored up, and can auxiliary major catalyst is reacted completely.
In one more preferably embodiment, heat shield is housed outside housing, prevents high temperature to external radiation and external impact or splashes
Damage caused by water.
Damping sealing pad is additionally provided with one more preferably embodiment, between housing and carrier, a damping, relief of thermal stress,
Insulation and the effect of sealing.
Exemplary description is carried out to the present invention above in conjunction with accompanying drawing, it is clear that realization of the invention is not by aforesaid way
Limitation, as long as employ technical solution of the present invention progress various improvement, or it is not improved say the present invention design and technology
Scheme is applied to other occasions, within the scope of the present invention.
Claims (6)
1. a kind of complex carries automobile three-way catalysts, including housing, damping sealing pad, carrier, catalyst converter, it is characterised in that shell
Body inlet end is connected by air inlet Taper Pipe with air inlet pipe, and housing outlet side is bored by escape pipe and connected with escape pipe；Carrier includes
Carrier one and carrier two, carrier one and carrier two are hollow-core construction, and are fixed on housing cavity；Mozzle is fixed on housing
Interior, mozzle one end is connected with air inlet Taper Pipe, and the mozzle other end then connects with carrier one, and air-flow enters carrier from mozzle
One；Carrier one divides for cylindrical section, circle tripe section and three sections of conical section, in carrier one filled with aluminum oxide ceramic particle and platinum,
Rhodium, palladium metal silk catalyst；Carrier two is cylindrical structure, and the space between the cylinder outer wall and cylinder inner wall of carrier two is filled with
Aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst；Be provided with U between carrier one and carrier two, air-flow from
Entered in mozzle after the catalytic reaction of carrier one after the base passage for entering U and be further separated into two of U
In long edge channel, enter back into carrier two after carrying out catalytic reaction and enter escape pipe cone from escape pipe discharge.
2. complex carries automobile three-way catalysts according to claim 1, it is characterised in that：The long side and carrier of U
One junction is provided with deflector.
3. complex carries automobile three-way catalysts according to claim 1, it is characterised in that：The mozzle is horn mouth knot
Structure.
A kind of 4. complex carries automobile three-way catalysts according to claim 1, it is characterised in that：The carrier one and carrier
Two inwall scribbles loose porous coating, and coating surface is covered with platinum, rhodium, palladium precious metal catalyst layer.
A kind of 5. complex carries automobile three-way catalysts according to claim 1, it is characterised in that：Equipped with heat-insulated outside housing
Cover.
A kind of 6. complex carries automobile three-way catalysts according to claim 1, it is characterised in that：Between housing and carrier also
Provided with damping sealing pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947791.2A CN107448268A (en) | 2017-10-12 | 2017-10-12 | A kind of complex carries automobile three-way catalysts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947791.2A CN107448268A (en) | 2017-10-12 | 2017-10-12 | A kind of complex carries automobile three-way catalysts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107448268A true CN107448268A (en) | 2017-12-08 |
Family
ID=60498713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710947791.2A Withdrawn CN107448268A (en) | 2017-10-12 | 2017-10-12 | A kind of complex carries automobile three-way catalysts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107448268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550301A (en) * | 2020-05-25 | 2020-08-18 | 安阳职业技术学院 | Nozzle type catalytic silencer for automobile diesel engine |
-
2017
- 2017-10-12 CN CN201710947791.2A patent/CN107448268A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550301A (en) * | 2020-05-25 | 2020-08-18 | 安阳职业技术学院 | Nozzle type catalytic silencer for automobile diesel engine |
| CN111550301B (en) * | 2020-05-25 | 2022-05-17 | 安阳职业技术学院 | Nozzle type catalytic silencer for automobile diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171208 |
|
| WW01 | Invention patent application withdrawn after publication |