CN105626207B - A kind of Diesel exhaust particles extracts trap catalyst device - Google Patents
A kind of Diesel exhaust particles extracts trap catalyst device Download PDFInfo
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- CN105626207B CN105626207B CN201410607563.7A CN201410607563A CN105626207B CN 105626207 B CN105626207 B CN 105626207B CN 201410607563 A CN201410607563 A CN 201410607563A CN 105626207 B CN105626207 B CN 105626207B
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- Prior art keywords
- inner core
- catalyst device
- trap catalyst
- bonding agent
- exhaust
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- 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
Abstract
The invention provides a kind of Diesel exhaust particles extracts trap catalyst device, the catalyst converter is made up of metal shell and inner core, inner core is column, formed by the inert alumina porcelain ball accumulation coated with binding agent, inner core cross section is circular, square, oval or track type, inner homogeneous arranges some exhaust passages, passage is circumferentially or radially arranged, cross sectional shape is rectangle, circle and sector, the summation of channel cross-sectional area is not more than the 25% of inner core sectional area, and the length of passage in the axial direction is 60% the 100% of column body length.A kind of Diesel exhaust particles extracts trap catalyst device of the present invention, bonding agent of the even application on spheres of ceramic, due to the presence of a large amount of micropores, specific surface area is big, it is strong to the adsorption effect of particulate matter, along with the exhaust passage of this exhaust particulate thing trap catalyst device is polymorphic structure, the trapping effect to particulate matter is very strong.
Description
Technical field
The present invention relates to a kind of diesel car tail gas refining product, especially a kind of Diesel exhaust particles extracts trap catalyst
Device.
Background technology
In order to mitigate motor vehicle emission pollution on the environment, installation tail gas clean-up is generally required in Engine exhaust pipeline
Device, for fuel automobile engine, generally comprise CO in tail gas, the harmful substance such as HC, NOx and carbon soot particles, especially
It is diesel engine, the content of soot particulate is larger, therefore, in the gas exhaust piping of diesel engine, typically
Exhaust particulate thing trap catalyst device will be installed, harmful soot is removed by the filtering of physics and by oxidation reaction
Grain, even if not installing special particle collection catalyst converter, will also consider the blockage problem of particulate matter.At present, diesel engine
Removing the exhaust gas purification system of harmful substance mainly has two classes, and one kind is referred to as selective catalytic reduction（It is denoted as：Optimization burning+
SCR）, most of carbon soot particles are flared off by optimization, a small amount of part is burned off in NOx reduction process.It is another
Class is referred to as waste gas combustion method again（It is denoted as EGR+DPF/DOC), carbon soot particles are trapped by special device and processing of burning.Optimization
Although caused carbon soot particles are few for burning+SCR method, but also must be considered that the influence of carbon soot particles.In a word, carbon soot particles
Trap and effectively handle extremely important, it is impossible to which fully trapping influences clean-up effect, it is impossible to which effectively processing influences whole cleaning system
Work, or even the exhaust of engine can be influenceed and pressed and cause the reduction of engine operational effectiveness, therefore ensure trapping effect and true
It is the groundwork target of grain catcher that guarantor, which is not blocked,.A kind of 2014.08.20 exhaust gas from diesel vehicle catalyst converter of bulletin（It is public
Announcement number：CN203783701U）, by legacy cellular ceramics internal openings, being slotted on section, solve legacy cellular ceramics
Anti-blocking problem.A kind of the Vehicle Exhaust Particulate trap catalyst device and filter core of also 2014.08.20 bulletins（Notification number：
CN203783692U）, cylindrical structural is made by metallic fiber coiled sheet, the filtering adsorption layer of soot particulate is formed, passed through
Filter absorption extexine cross section ripple, along longitudinal water conservancy diversion tail gas, strengthens trap particulate matter effect.Patent CN203783701U changes
The partial structurtes of legacy cellular ceramics, enhance ventilation blocking-proof result, but are the reduction of specific surface area, reduce catalyzed conversion
Effect, while add manufacturing cost；Although patent CN203783692U granule capturings effect is good, device cost itself
Height, back pressure is big, and the particularly regeneration of device is difficult.In summary, carbon soot particles trap is worth very big for tail gas clean-up, is caught
The collection good and can of effect automatically processes the carbon soot particles trapped with regard to more meaningful.
The content of the invention
It is an object of the invention to provide one kind to be used for Diesel exhaust particles extracts trap catalyst device, a kind of excessively stream contact area
Greatly, granule capturing effect is good, is not easily blocked and has the exhaust particulate thing trap catalyst device of good hydrodynamic characteristics.
In order to solve the above-mentioned technical problem, technical scheme is as follows：A kind of Diesel exhaust particles extracts trapping is urged
Change device, it is characterised in that：The particle collection catalyst converter is to be bonded to form by ceramic ball thing, irregular between ball and ball
Gap is as exhaust passage, and tail gas flows through the exhaust passage of abnormity, and particulate matter is captured and is oxidized burning, to avoid ventilation from hindering
Power is excessive, and several exhaust passages are provided with the inside of grain catcher, first, ensureing bigger aperture opening ratio, second, ensureing tail
Gas air-flow is diffused rapidly to inside whole grain catcher.Bonding agent contains oxidation catalyst, and CO in tail gas, HC, NOx are carried out
Catalytic oxidation, during burn the carbon soot particles trapped in the lump.Bonding agent even application is on spheres of ceramic, sintering
Contain substantial amounts of micropore afterwards, increase specific surface area, add the adsorption effect of particulate matter, also there is decay to imitate in the air-flow flowed through
Fruit, play a part of noise elimination.
Beneficial effect：
A kind of Diesel exhaust particles extracts trap catalyst device of the present invention, bonding of the even application on spheres of ceramic
Agent, due to the presence of a large amount of micropores, specific surface area is big, strong to the adsorption effect of particulate matter, along with this exhaust particulate thing traps
The exhaust passage of catalyst converter is polymorphic structure, and the trapping effect to particulate matter is very strong.Contain catalysis oxidation in bonding agent
Composition, CO, HC, the carbon soot particles trapped is burnt in the lump during NOx catalytic reactions.Set inside grain catcher
Exhaust passage, ensure that it has bigger aperture opening ratio, aeration resistance is small, also ensures that air-flow is diffused rapidly to whole granule capturing
Inside device.The passage of polymorphic structure, also there is decay blockage effect to the air-flow sound intensity, play a part of silencer.
Brief description of the drawings
Fig. 1 is Diesel exhaust particles extracts trap catalyst device structural representation of the present invention.
Fig. 2 is particle collection catalyst converter inner core exhaust passage radially location arrangements figure.
Fig. 3 is particle collection catalyst converter inner core exhaust passage circumferentially location arrangements figure.
Fig. 4 is the partial enlarged drawing in Fig. 1.
Embodiment
The present invention is further illustrated below by way of specific embodiment.
A kind of Diesel exhaust particles extracts trap catalyst device of the present invention, specific one embodiment use main
Raw material are inert alumina porcelain ball and bonding agent, inert alumina porcelain bulb diameter 6mm, Al2O3Content 91%, to acid, alkali and its
Corrosion resistance >=95% of its organic solvent.Bonding agent composition forms and weight ratio is respectively：Titanium dioxide 53.7%, aluminium bonding agent
23.33%th, cerium zirconium oxysome powder 11%, alumina powder 10.7%, sodium metavanadate 0.21%, MEA 0.15%, a water lemon
Acid 0.11%, palladium nitrate solution 0.8%, the process of preparation is dispensing first, batch mixing, then adds appropriate pure water grinding 6 hours, finally
It is Concentration Modulation, the weight ratio of pure water and other materials is 2.8:1.The present embodiment trap core designs are cylinder, section
Diameter dimension 150mm, length 100mm, 8 evenly distributed rectangle exhaust passages, passage are evenly arranged on entrance section
Width is 2mm, length 50mm, along cylinder axis to channel depth be 80mm.The technological process of the present embodiment is：Bonding agent system
Standby, Ceramic Balls coat bonding agent, stir in stirred tank and moderately dry（Keep viscosity and no sag）, loaded in mold cavity
Shaping, fully dries, 650 DEG C of high temperature sinterings naturally, removes burr, and cleaning removes the ashes that auxiliary material burning leaves.
It is the structural representation of Diesel exhaust particles extracts trap catalyst device as shown in Figure 1, wherein 1 is air inlet, from hair
The tail gas of motivation discharge enters exhaust particulate thing trap catalyst device through air inlet 1；3 be the shell of grain catcher, in shell and
There are expanding sealing strips 5 between inner core；4 be exhaust outlet, and the vehicle exhaust for obtaining purified treatment is discharged into air from exhaust outlet 4；Inertia
Alumina ball 6 is bonded together the inner core 2 for forming particle collection catalyst converter by bonding agent 7, wherein 8 urge for particle collection
Change the exhaust passage set on device inner core, location arrangements of the exhaust passage in interior core section are as shown in Figures 2 and 3.
Claims (3)
- A kind of 1. Diesel exhaust particles extracts trap catalyst device, it is characterised in that：The catalyst converter is by metal shell and inner core group Into, inner core is column, by coated with bonding agent inert alumina porcelain ball accumulation form, inner core cross section for it is circular, square, Ellipse, inner homogeneous arrange some exhaust passages, and passage is circumferentially or radially arranged, and cross sectional shape is rectangle, circle Shape and sector, the summation of channel cross-sectional area are not more than the 25% of inner core sectional area, and the length of passage in the axial direction is grown for column The 60%-100% of degree；Inert alumina porcelain ball is with AL2O3For raw material, AL2O3Content >=90%, using super fine, isostatic pressed, into Ball machine is molded and formed through high-temperature roasting, and the dimensions of ceramic bead is from 1 to 20 millimeter；Bonding agent contain catalytic oxidant into Point, be coated uniformly on inert alumina porcelain ball, a large amount of micropores formed in porcelain ball surface after sintering, the composition composition of bonding agent and Weight ratio is：Titanium dioxide 52-55%, aluminium bonding agent 22-24.5%, cerium zirconium oxysome powder 10-11%, alumina powder 9.5- 11.5%th, sodium metavanadate 0.2-0.3%, MEA 0.13-0.17%, Citric Acid Mono 0.1-0.12%, palladium nitrate solution 0.78- 1.0%。
- A kind of 2. Diesel exhaust particles extracts trap catalyst device according to claim 1, it is characterised in that：It is prepared by bonding agent Technique is：Dispensing, batch mixing plus appropriate pure water grind 5-7 hours, by pure water and other materials（2.5-3.5）：1 weight ratio enters Row Concentration Modulation.
- 3. a kind of Diesel exhaust particles extracts trap catalyst device according to claim 1 or 2, its overall preparation technology are： The inert alumina porcelain ball for being coated with bonding agent is stirred in stirred tank and moderately dried, and keeps viscosity and no sag, bonding The coating thickness 0.01-0.015mm of agent, the Ceramic Balls moderately dried are loaded shaping in mold cavity, fully dried naturally, high Floating ash is removed in warm 630-700 DEG C of sintering, cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410607563.7A CN105626207B (en) | 2014-10-16 | 2014-11-03 | A kind of Diesel exhaust particles extracts trap catalyst device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546184 | 2014-10-16 | ||
| CN2014105461841 | 2014-10-16 | ||
| CN201410607563.7A CN105626207B (en) | 2014-10-16 | 2014-11-03 | A kind of Diesel exhaust particles extracts trap catalyst device |
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| Publication Number | Publication Date |
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| CN105626207A CN105626207A (en) | 2016-06-01 |
| CN105626207B true CN105626207B (en) | 2018-02-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH446812A (en) * | 1965-10-06 | 1967-11-15 | Miescher Hans Ueli | Method and device for cleaning, detoxifying and soundproofing gas flows, in particular the exhaust gases from internal combustion engines |
| CN200940503Y (en) * | 2006-08-17 | 2007-08-29 | 同济大学 | Micro particle trapping device for section type diesel engine exhaust |
| CN101042065A (en) * | 2006-03-20 | 2007-09-26 | 吴雄良 | Infrared purification apparatus of diesel engine exhaust gas and Scouring method thereof |
| CN101288854A (en) * | 2007-04-17 | 2008-10-22 | 揖斐电株式会社 | Catalyst-carrying honeycomb and process for producing the same |
| CN101522587A (en) * | 2006-08-29 | 2009-09-02 | 康宁股份有限公司 | Glass bonded ceramic structures |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002530175A (en) * | 1998-11-20 | 2002-09-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Catalyst-carrying filter |
-
2014
- 2014-11-03 CN CN201410607563.7A patent/CN105626207B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH446812A (en) * | 1965-10-06 | 1967-11-15 | Miescher Hans Ueli | Method and device for cleaning, detoxifying and soundproofing gas flows, in particular the exhaust gases from internal combustion engines |
| CN101042065A (en) * | 2006-03-20 | 2007-09-26 | 吴雄良 | Infrared purification apparatus of diesel engine exhaust gas and Scouring method thereof |
| CN200940503Y (en) * | 2006-08-17 | 2007-08-29 | 同济大学 | Micro particle trapping device for section type diesel engine exhaust |
| CN101522587A (en) * | 2006-08-29 | 2009-09-02 | 康宁股份有限公司 | Glass bonded ceramic structures |
| CN101288854A (en) * | 2007-04-17 | 2008-10-22 | 揖斐电株式会社 | Catalyst-carrying honeycomb and process for producing the same |
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| CN105626207A (en) | 2016-06-01 |
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