CN207989118U - A kind of electric field-enhanced ternary catalyzing unit - Google Patents
A kind of electric field-enhanced ternary catalyzing unit Download PDFInfo
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- CN207989118U CN207989118U CN201820381417.0U CN201820381417U CN207989118U CN 207989118 U CN207989118 U CN 207989118U CN 201820381417 U CN201820381417 U CN 201820381417U CN 207989118 U CN207989118 U CN 207989118U
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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 utility model discloses a kind of electric field-enhanced ternary catalyzing units, including：Shell, it is internal that there is hollow cavity；Air inlet is arranged in the shell side, is connected to described cavity one end；Gas outlet is arranged in the shell other side, is connected to the other end of the cavity；First wiring hole position is arranged the outside close to air inlet side in the shell, and is connected to the cavity；Second wiring hole position is arranged the outside close to gas outlet side in the shell, and is connected to the cavity；Wherein, first wiring hole and second wiring hole are separately connected high pressure activation two poles；It is catalyzed mechanism, be coated with noble metal catalyst thereon and is supported on the enclosure interior, the high pressure activation power supply can be connected to, vehicle exhaust is catalyzed；Wherein, the catalysis mechanism is coaxially disposed with the shell, the air inlet, the gas outlet.The present apparatus improves catalytic efficiency, reduces exhaust emissions.
Description
Technical field
The utility model belongs to technical field of engines, is urged more specifically to a kind of ternary that automobile is electric field-enhanced
Change device.
Background technology
As state's laws regulation is increasingly stringenter environmental requirement, a large amount of pollutant component is contained in vehicle exhaust, it is right
Environment pollutes, is detrimental to health, and automobile engine tail gas treatment technology is particularly important, among these ternary catalyzing unit
It is Typical Representative.
Ternary catalyzing unit is a kind of device of processing motor exhaust, and active ingredient is noble metal catalyst, main to make
Be the harmful substances such as carbon monoxide, hydrocarbon and nitrogen oxides in motor exhaust are made by catalytic action it is above-mentioned
Three kinds of gases occur redox reaction and are changed into harmless carbon dioxide, water and nitrogen.
Metal surface launching electronics phenomena principles：In metallic surface, a free electron by multiple nuclear effects,
Its potential energy is as shown in Figure 2.Horizontal axis indicates that the distance apart from metal surface, the longitudinal axis indicate electronics perpendicular to metal surface in figure
Potential energy.In unlimited distance, potential energy zero, i.e. Wa=0.The lowest energy level of free electron is-Wa, and energy is less than the electricity of-Wa again
Son is bound electron, and electronics is strapped in intratomic, it cannot cross " potential barrier " between ion and free movement.In metal freely
The potential energy of electronics isWhen, although they can free movement in a metal, metal can't be detached from.It must be by the external world
To the energy that these electronics are enoughThe kinetic energy of electronics can make it be detached from metal surface more than surface potential barrier and form
For space free electron.The mode for energy being transmitted to from outside this free electron can be that extra electric field is left with changing electronics
The required energy in surface, here it is field emission phenomenons.
The basic principle of precious metal catalyst：Chemical reaction needs to overcome the potential barrier of atom or molecule outer layer valence electron, generally
Work function is provided for valence electron by the thermal energy of atom or molecule, to generate electrically charged negative ions, it is anti-to form chemistry
The active group answered.The Work function very little of d or f orbital electron in atom is far below other orbital electron.Thus it is common to use d
Or the atom of f tracks provides the transfer orbit and electronics of intermediate state, generates the active group of electrification as catalyst,
Promote chemical reaction.Therefore, catalytic action core comes from the transfer orbit and its electronics of relatively low Work function, by changing atom
The Work function of core outermost layer valence electron, so that it may to change catalytic efficiency.
D the or f track atoms used in catalyst are mostly precious metal atom at present.
Extra electric field can substantially change the Work function of electronics, due to the presence of external electric field, Metal Surface Barrier be made to deform,
There is part electronics to be detached from metal surface through potential barrier.This phenomenon is referred to as " field emission ".Now consider an electronics from
The case where when distance of metal surface is x (more much bigger than metal lattice), its field distribution is just as in metal surface another side
+ e charges there are one at (- x).Thus cause to act on power electronically, referred to as " image force ".The power is obtained by Coulomb's law
In formula, ε0It is the dielectric constant in vacuum, x is integrated to from ∞, obtains the potential energy at x distances
Fig. 3 curves 1 indicate potential energy curve when no external electric field
If the amplitude of extra electric field is E, its direction will be equal to perpendicular to metal surface, potential energy of the electronics in this electric field
Wl=-eEx
It is straight line, 2 expression-W of Fig. 3 curveslThis part of=eEx.The total potential energy of this two parts altogether is
Wt=We+Wt
Or
The curve 3 of Fig. 3 is exactly the curve for indicating this relationship.It can be seen that surface potential barrier reduces certain amplitude really.
Present electronics will be detached from metal surface, and there is no need to obtainSo big energy, it is only necessary to.Potential barrier
Shape also changes, it has certain width now, and when unlike not having external electric field, it extends to infinity.
Extra electric field will not necessarily arrive the degree of field emission to generate free electron, as long as changing Work Function
Catalytic efficiency can be improved.
When noble metal electron detachment inner surface or outer surface, because of an electron is negatively charged lotus, so the power line against electric field is transported
It is dynamic.Electron institute is on the surface that surface is that catalysis reaction carries out.
During existing ternary catalyzing unit improves, mostly improved in terms of structure, catalyst carrier.Such as Chinese utility model
Patent CN201620955145 innovates reaction structure, and two reaction warehouses of setting are so that reaction is more abundant；It is Chinese practical
New patent CN201611050380 then carries out heating to motor exhaust using microwave heating and promotes reaction more abundant；Application
It is that tail gas adjusts suitable temperature that disclosed Chinese utility model patent CN201611014686, which introduces thermo-electric generation,.It there is no at present
The scheme improved from raising catalyst standpoint of efficiency.
Utility model content
The utility model has designed and developed a kind of electric field-enhanced ternary catalyzing unit, and to catalysis, mechanism applies extra electric field,
By changing the Work function of precious metal atom core outermost layer valence electron, change catalytic efficiency.
A kind of electric field-enhanced ternary catalyzing unit, including：
Shell, it is internal that there is hollow cavity；
Air inlet is arranged in the shell side, is connected to described cavity one end；
Gas outlet is arranged in the shell other side, is connected to the other end of the cavity；
First wiring hole position is arranged the outside close to air inlet side in the shell, and is connected to the cavity；
Second wiring hole position is arranged the outside close to gas outlet side in the shell, and is connected to the cavity；
Wherein, first wiring hole and second wiring hole are separately connected high pressure activation two poles；
It is catalyzed mechanism, be coated with noble metal catalyst thereon and is supported on the enclosure interior, the high pressure can be connected to
Excitation power supply is catalyzed vehicle exhaust；
Wherein, it insulate between the catalysis mechanism and the shell, and the catalysis mechanism and the shell, the air inlet
Mouth, gas outlet coaxial arrangement.
Preferably, the catalysis mechanism is multiple connected cellular set body openings, and its inner wall is coated with precious metal catalyst
Agent；
Wherein, it is negative electricity hole to choose several cellular set body openings, is passed through high pressure negative electricity wherein, is chosen and negative electricity hole phase
Adjacent multiple honeycomb holes are positive electricity hole, are passed through high pressure positive electricity wherein.
Preferably, the catalysis mechanism is the multiple first thin thin-wall metal pipe assemblies comprising：
Multiple first thin thin metallic tubds, inner wall are coated with noble metal catalyst；
Metal electrode silk, outside wrapped up by ceramics, be arranged inside the first thin thin metallic tubd, and along the metal tube
Axis direction is arranged；
First supporting rack is arranged at the enclosure interior both ends, is used to support the described first thin thin metallic tubd and institute
State the relative position of metal electrode silk；
Wherein, the described first thin thin metallic tubd connects high pressure negative electricity, and the metal electrode silk connects high pressure positive electricity.
Preferably, the catalysis mechanism is the multiple second thin thin-wall metal pipe assemblies comprising：
Multiple second thin thin metallic tubds, outer wall are coated with noble metal catalyst；
Second supporting rack, setting is at the in-house both ends of catalysis, for keeping the adjacent second thin thin-walled gold
The relative position of category；
Wherein, several second thin thin metallic tubds are chosen as positive fulgurite, high pressure positive electricity are passed through wherein, described
Equidistant second thin thin metallic tubd is passed through high pressure negative electricity wherein as negative electricity pipe outside positive fulgurite.
Preferably, the catalysis mechanism includes：
Multiple metallic plates being mutually parallel, the metal sheet surface are coated with noble metal catalyst；
Holding mechanism is arranged between the metallic plate, is used to support the metallic plate；
Wherein, the metallic plate alternately applies high pressure positive electricity and high pressure negative electricity successively, wherein the plane side of the metallic plate
To parallel with the flow direction of vehicle exhaust, the vehicle exhaust can axially flow in the gap between adjacent metal sheets.
Preferably, the metallic plate selects planar metal plate or the densely covered web frame of wire.
Preferably, the holding mechanism includes at least two eradication edge columns.
Preferably, the both ends of the shell are connected by cushion seal material with the air inlet and the gas outlet；
Wherein, the cushion seal material is flexible material.
Preferably, the air inlet and the gas outlet use isolation material.
Advantageous effect described in the utility model：The utility model patent can promote carbon monoxide, hydrocarbon and
Conversion of nitrogen oxides is the conversion reaction rate of harmless carbon dioxide, water, nitrogen, improves catalytic efficiency, reduces tail gas row
It puts, positive effect is played to environmental protection.
By the Work function for changing precious metal atom core outermost layer valence electron, so that it may to change catalytic efficiency.It powers up outside
The original catalytic capability of noble metal catalyst can also be reached under the action of so that cheap metal is in electric field-enhanced ternary
Catalyst converter with being possibly realized.
Description of the drawings
Fig. 1 is the structural schematic diagram of electric field-enhanced ternary catalyzing unit described in the utility model.
Fig. 2 is the schematic diagram of metal surface electronic potential described in the utility model.
Fig. 3 is effect schematic diagram of the external electric field to potential barrier.
Fig. 4 is the structural schematic diagram of the embodiment 1 of catalysis mechanism described in the utility model.
Fig. 5 is internal field's schematic diagram of the embodiment 1 of catalysis mechanism described in the utility model.
Fig. 6 is the structure front view of the embodiment 2 of catalysis mechanism described in the utility model.
Fig. 7 is the structural side view of the embodiment 2 of catalysis mechanism described in the utility model.
Fig. 8 is the structural schematic diagram of thin thin-wall metal pipe assembly described in the utility model.
Fig. 9 is the structure front view of the embodiment 3 of catalysis mechanism described in the utility model.
Figure 10 is the structural side view of the embodiment 3 of catalysis mechanism described in the utility model.
Figure 11 is the structural schematic diagram of the embodiment 4 of catalysis mechanism described in the utility model.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in Figure 1, the utility model provides a kind of electric field-enhanced ternary catalyzing unit, including：Air inlet 110, first
Wiring hole position 120, shell 130, catalysis mechanism 200, the second wiring hole position 140, exhaust outlet 150.
Embodiment 1
As shown in figs. 1 and 4, a kind of electric field-enhanced ternary catalyzing unit described in the present embodiment, including：Air inlet 110,
First wiring hole position 120, shell 130, catalysis mechanism 210, the second wiring hole position 140, exhaust outlet 150.Wherein, it is catalyzed mechanism
200 are tightly fixed to inside shell 3, are catalyzed mechanism 200 and shell 130, air inlet 110, exhaust outlet 150 are coaxial, and be catalyzed
Mechanism 200 insulate with shell 130.
The air inlet pipe and exhaust pipe of vehicle exhaust distinguish air inlet 110 and the connection of exhaust outlet 150 by separator tube, wherein
The preferred sealing material of material of separator tube.The material selection insulating materials of air inlet 110 and exhaust outlet 150.
In the present invention, as a preferred embodiment, separator tube selects the flexible material of insulation.
In the present invention, as a preferred embodiment, the material selection ambroin of air inlet and exhaust outlet.
As shown in Figs 1-4, catalysis mechanism 210 is improved to obtain on the basis of legacy cellular carrier, traditional bee
Nest carrier is porous ceramic film material, and hole position internal coat has one layer of noble metal catalyst, such as platinum, rhodium, palladium.In the utility model
In, hole position is chosen, high pressure positive electricity is applied to noble metal thereon, high pressure negative electricity is applied to six holes position around it, according to
This principle arranges the distribution of high pressure activation power supply, and arrangement electric field is by shown in dotted line in figure.Because legacy cellular carrier inside is ceramics
Material, outer surface noble metal-coating material, so its property for insulating with each honeycomb hole noble metal.
High pressure activation power supply is accessed from the first wiring hole position 120 and the second wiring hole position 140 respectively, the first wiring hole position
120 and second wiring hole position 140 can make high pressure activation power supply and 130 good insulation of shell and closed.
Operation principle：In electric field-enhanced ternary catalyzing unit work, the tail gas that engine work generates is via air inlet
110 enter, and by being catalyzed among mechanism 210 enters internal cellular hole position, are influenced by catalyst, carbon monoxide, hydrocarbon
Compound and the conversion reaction that conversion of nitrogen oxides is harmless carbon dioxide, water, nitrogen.
High pressure activation power supply is linked into catalysis mechanism from the first wiring hole position 120 and the second wiring hole position 140 respectively at this time
Among 210.High pressure activation power supply numerical value will as the case may be according toCalculate and is obtained with experiment.
High pressure activation supply voltage selection principle：Voltage selection is bigger, and electric field strength is bigger, noble metal Work Function
Lower, catalytic conversion efficiency is higher, but electric field strength is excessively high can cause punch through short circuit, therefore voltage of electric field needs consider and hit
Voltage and catalytic conversion efficiency are worn to determine.
As shown in figure 5, catalysis mechanism 210 produces direction shown in dotted line due to being connected to high pressure activation power supply in inside
High voltage electric field, noble metal catalyst electronics by electric field force acted on precious metal surface assemble, catalyst Work function reduce,
And then the catalytic efficiency of catalyst is improved, so that electric field-enhanced ternary catalyzing unit is improved the catalyzed conversion ability of tail gas.
It should be added that when electric field is most enough big under the premise of not puncturing, catalyst Work function is decreased obviously,
Coating metal can substitute noble metal with base metal such as nickel, copper, cobalt etc. in catalysis mechanism honeycomb substrate hole at this time, to reduce by three
First catalyst converter cost.
Embodiment 2
As shown in figs. 1 and 6, a kind of electric field-enhanced ternary catalyzing unit described in the present embodiment, including：Air inlet 110,
First wiring hole position 120, shell 130, catalysis mechanism 220, the second wiring hole position 140, exhaust outlet 150.Wherein, it is catalyzed mechanism
200 are tightly fixed to inside shell 3, are catalyzed mechanism 200 and shell 130, air inlet 110, exhaust outlet 150 are coaxial, and be catalyzed
Mechanism 220 insulate with shell 130.
The air inlet pipe and exhaust pipe of vehicle exhaust distinguish air inlet 110 and the connection of exhaust outlet 150 by separator tube, wherein
The preferred sealing material of material of separator tube.The material selection insulating materials of air inlet 110 and exhaust outlet 150.
In the present invention, as a preferred embodiment, separator tube selects the flexible material of insulation.
As shown in figs 6-8,220 inside of catalysis mechanism arranges that multiple thin thin-wall metal pipe assemblies 221, thin thin metallic tubd are total
Include the multiple first thin thin metallic tubd 221-b at 221, in the inner wall noble metal-coating material of the first thin thin metallic tubd 221-b
Material arranges the metal electrode silk 221-a of a ceramics package in the central axis of the first thin thin metallic tubd 221-b.Metal electricity
The thin thin metallic tubd 221-b of polar filament 221-a and first are not contacted each other, wherein and metal electrode silk 221-a adds high pressure positive electricity, and
One thin thin metallic tubd 221-b connects high pressure negative electricity.The ceramics of metal electrode silk 221-a packages can ensure that first is thin thin simultaneously
Wall metallic pipe 221-b and metal electrode silk 221-a mutual insulatings.
In addition, in each first thin thin-walled gold of inside both ends setting reticulated ceramic or the support of asbestos holder of catalysis mechanism 220
Belong to pipe 221-b and metal electrode silk 221-a, with keep each first thin thin metallic tubd 221-b and metal electrode silk 221-a it
Between relative position (reticulated ceramic or asbestos holder are not shown in figure).
High pressure activation power supply is respectively connected to from the first wiring hole position 120, the access of the second wiring hole position 140 thin to first respectively
Thin metallic tubd 221-b and metal electrode silk 221-a, the first wiring hole position 120 and the second wiring hole position 140 can make high pressure activation
Power supply and 130 good insulation of shell and closed.
Operation principle：When electric field-enhanced ternary catalyzing unit works, the tail gas that engine work generates is via air inlet 110
Into, through catalysis mechanism 220 in thin thin-wall metal pipe assembly 221, enter inside the first thin thin metallic tubd 221-b.
High pressure activation power supply is linked into catalysis mechanism from the first wiring hole position 120, the second wiring hole position 140 respectively at this time
Among 220.
Catalysis mechanism 220 generates high pressure due to having connected high pressure activation power supply inside thin thin-wall metal pipe assembly 221
Electric field, the work of electrons in the noble metal catalyst coated in the first thin thin metallic tubd 221-b inner walls at this time due to electric field
It is moved with to surface, the Work function of electronics is caused to reduce, catalytic surface at this time is internal face.High voltage electric field makes catalyst deviate from
Work(reduces, and then improves the catalytic efficiency of catalyst, and electric field-enhanced ternary catalyzing unit is made to obtain the catalyzed conversion ability of tail gas
To raising.
It should be added that when electric field is most enough big under the premise of not puncturing, catalyst Work function is decreased obviously,
Coating metal can be with base metal such as in the first thin thin metallic tubd 221-b inner walls of ternary catalyzing unit electric field-enhanced at this time
Nickel, copper, cobalt etc. substitute noble metal, to reduce electric field-enhanced ternary catalyzing unit cost.
Embodiment 3：
As shown in Fig. 1 and Fig. 9, Figure 10, a kind of electric field-enhanced ternary catalyzing unit, the present embodiment described in the present embodiment
A kind of described electric field-enhanced ternary catalyzing unit, including：Air inlet 110, the first wiring hole position 120, shell 130, catalysis
Mechanism 220, the second wiring hole position 140, exhaust outlet 150.Wherein, catalysis mechanism 200 is tightly fixed to inside shell 3, catalytic machine
Structure 230 and shell 130, air inlet 110, exhaust outlet 150 are coaxial, and are catalyzed mechanism 230 and insulate with shell 130.
The air inlet pipe and exhaust pipe of vehicle exhaust distinguish air inlet 110 and the connection of exhaust outlet 150 by separator tube, wherein
The preferred sealing material of material of separator tube.The material selection insulating materials of air inlet 110 and exhaust outlet 150.
In the present invention, as a preferred embodiment, separator tube selects the flexible material of insulation.
In the present invention, as a preferred embodiment, the material selection ambroin of air inlet and exhaust outlet.
Be catalyzed mechanism 230, multiple second thin thin metallic tubds 231 are arranged in inside, every second thin thin metallic tubd 231 it
Between be equidistantly evenly arranged other multiple second thin thin metallic tubds 231, the selection of spacing to consider voltage of electric field and
Breakdown and mutually insulated is avoided to determine, concrete arrangement is as shown in Figure 10.In addition it is set at 230 inside both ends of catalysis mechanism
It sets reticulated ceramic or asbestos holder supports each second thin thin metallic tubd 231 to keep relative position between each thin thin metallic tubd
(reticulated ceramic or asbestos holder are not shown in figure).
In 231 outer surface noble metal-coating catalyst of the second thin thin metallic tubd.
A second thin thin metallic tubd 231 is chosen in being catalyzed mechanism 230, applies high pressure positive electricity to it, it is surrounding
Other second thin thin metallic tubds 231 apply high pressure negative electricity, and the distribution of high pressure activation power supply is arranged according to this principle.Electronics at this time
The thin metallic tubd outside wall surface aggregation of high pressure negative electricity is connected in being catalyzed mechanism 230, outside wall surface is catalytic surface.
High pressure activation power supply is respectively connected to from the first wiring hole position 120, the access of the second wiring hole position 140 thin to second respectively
In thin metallic tubd 231, the first wiring hole position 120 and the second wiring hole position 140 can make high pressure activation power supply good with shell 130
It insulate and closed.
Operation principle：When electric field-enhanced ternary catalyzing unit works, the tail gas that engine work generates is via air inlet 110
Into by being catalyzed mechanism 230, entering by each second thin thin metallic tubd 231 and 130 surrounded exterior space of shell.
High pressure activation power supply is linked into catalysis mechanism from the first wiring hole position 120, the second wiring hole position 140 respectively at this time
Among 230.
Catalysis mechanism 230 generates high pressure due to having connected high pressure activation power supply inside the second thin thin metallic tubd 231
Electric field connects the electrons in high pressure minus second electricity 231 inner wall of thin thin metallic tubd since the effect of electric field is thin to second at this time
231 outer surface of wall metallic pipe is moved, therefore 231 outer surface of the second thin metallic tubd is catalytic surface, and the Work function of electronics is caused to subtract
It is small.High voltage electric field makes catalyst Work function reduce, and then improves the catalytic efficiency of catalyst, makes electric field-enhanced ternary catalyzing unit
The catalyzed conversion ability of tail gas is improved.
It should be added that when electric field is most enough big under the premise of not puncturing, catalyst Work function is decreased obviously,
The metal of second thin thin metallic tubd, 231 outer surface coating at this time can substitute noble metal with base metal such as nickel, copper, cobalt etc., with
Reduce electric field-enhanced ternary catalyzing unit cost.
Embodiment 4：
As shown in Fig. 1 and Figure 11, a kind of electric field-enhanced ternary catalyzing unit described in the present embodiment, including air inlet
110, the first wiring hole position 120, shell 130, catalysis mechanism 220, the second wiring hole position 140, exhaust outlet 150.Wherein, it is catalyzed
Mechanism 200 is tightly fixed to inside shell 130, is catalyzed mechanism 240 and shell 130, air inlet 110, exhaust outlet 150 are coaxial, and
And catalysis mechanism 230 insulate with shell 130.
The air inlet pipe and exhaust pipe of vehicle exhaust distinguish air inlet 110 and the connection of exhaust outlet 150 by separator tube, wherein
The preferred sealing material of material of separator tube.The material selection insulating materials of air inlet 110 and exhaust outlet 150.
In the present invention, as a preferred embodiment, separator tube selects the flexible material of insulation.
In the present invention, as a preferred embodiment, the material selection ambroin of air inlet and exhaust outlet.
It is catalyzed mechanism 240, is internally provided with the metal electrode board 241 of several parallel arrangements.241 surface of metal electrode board
Noble metal-coating catalyst is responsible for support metal electrode board 241 by the holding mechanism 242 that two or more root posts form.Wherein,
Holding mechanism 242 selects insulating materials,
In the present invention, as a preferred embodiment, holding mechanism Ceramics material so that holding mechanism 242 and gold
Belong to electrode plate mutually insulated.
The metal electrode board 241 of each layer parallel arrangement is respectively turned on high pressure activation power positive cathode, and positive and negative anodes are according to Figure 11
Shown arranged crosswise.241 plane of metal electrode board of parallel arrangement and the exhaust gas flow for entering electric field-enhanced ternary catalyzing unit
Direction is parallel, i.e. gap of the motor exhaust between each layer metal electrode board 241 is axially flowed.
Wherein, the metal electrode board 241 can select the structures material such as planar metal plate or the densely covered net of wire, at this
In utility model, as a preferred embodiment, metal electrode board 241 is preferably the densely covered net of wire.
From reserved wiring hole position 2, access is respectively connected to corresponding metal electrode board high pressure activation power positive cathode respectively
On, reserved wiring hole position 2 can make high-voltage electricity and 130 good insulation of shell and closed.
Operation principle：When electric field-enhanced ternary catalyzing unit work, tail gas that engine work generates via air inlet 1 into
Enter electric field-enhanced ternary catalyzing unit, by the gap between metal electrode board 241 in three-element catalytic carrier 4-4.
High pressure activation power supply is respectively connected to from the first wiring hole position 120, the access of the second wiring hole position 140 thin to second respectively
In thin metallic tubd 231, the first wiring hole position 120 and the second wiring hole position 140 can make high pressure activation power supply good with shell 130
It insulate and closed.
Catalysis mechanism 240 generates high-voltage electricity due to having connected high pressure activation power supply between each metal electrode board 241
.
Due to the effect of electric field, electronics will be gathered in 241 surface of metal electrode board.High voltage electric field makes the electronics of catalyst
Work function reduces, and then improves the catalytic efficiency of catalyst, and the tail gas of electric field-enhanced ternary catalyzing unit is made to flow through metal electrode
When 241 gap of plate, metal electrode board noble metal surface is improved the catalyzed conversion ability of tail gas.
It should be added that when electric field is most enough big under the premise of not puncturing, catalyst Work function is decreased obviously,
241 surface metallization of ternary catalyzing unit metal electrode board electric field-enhanced at this time can be replaced with base metal such as nickel, copper, cobalt etc.
For noble metal, to reduce electric field-enhanced ternary catalyzing unit cost.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (9)
1. a kind of electric field-enhanced ternary catalyzing unit, which is characterized in that including：
Shell, it is internal that there is hollow cavity；
Air inlet is arranged in the shell side, is connected to described cavity one end；
Gas outlet is arranged in the shell other side, is connected to the other end of the cavity；
First wiring hole position is arranged the outside close to air inlet side in the shell, and is connected to the cavity；
Second wiring hole position is arranged the outside close to gas outlet side in the shell, and is connected to the cavity；
Wherein, first wiring hole and second wiring hole are separately connected high pressure activation two poles；
It is catalyzed mechanism, be coated with noble metal catalyst thereon and is supported on the enclosure interior, the high pressure activation can be connected to
Power supply is catalyzed vehicle exhaust；
Wherein, insulate between the catalysis mechanism and the shell, and the catalysis mechanism and the shell, the air inlet,
The gas outlet coaxial arrangement.
2. electric field-enhanced ternary catalyzing unit according to claim 1, which is characterized in that the catalysis mechanism is multiple phases
Cellular set body opening even, and its inner wall is coated with noble metal catalyst；
Wherein, it is negative electricity hole to choose several cellular set body openings, is passed through high pressure negative electricity wherein, is chosen adjacent with the negative electricity hole
Multiple honeycomb holes are positive electricity hole, are passed through high pressure positive electricity wherein.
3. electric field-enhanced ternary catalyzing unit according to claim 1, which is characterized in that the catalysis mechanism is multiple the
One thin thin-wall metal pipe assembly comprising：
Multiple first thin thin metallic tubds, inner wall are coated with noble metal catalyst；
Metal electrode silk, outside wrapped up by ceramics, be arranged inside the first thin thin metallic tubd, and along the metal pipe axis
Direction is arranged；
First supporting rack is arranged at the enclosure interior both ends, is used to support the described first thin thin metallic tubd and the gold
Belong to the relative position of wire electrode；
Wherein, the described first thin thin metallic tubd connects high pressure negative electricity, and the metal electrode silk connects high pressure positive electricity.
4. electric field-enhanced ternary catalyzing unit according to claim 1, which is characterized in that the catalysis mechanism is multiple the
Two thin thin-wall metal pipe assemblies comprising：
Multiple second thin thin metallic tubds, outer wall are coated with noble metal catalyst；
Second supporting rack, setting is at the in-house both ends of catalysis, for keeping the adjacent second thin thin-wall metal
Relative position；
Wherein, several second thin thin metallic tubds are chosen as positive fulgurite, high pressure positive electricity are passed through wherein, in the positive electricity
Equidistant second thin thin metallic tubd is passed through high pressure negative electricity wherein as negative electricity pipe outside pipe.
5. electric field-enhanced ternary catalyzing unit according to claim 1, which is characterized in that the catalysis mechanism includes：
Multiple metallic plates being mutually parallel, the metal sheet surface are coated with noble metal catalyst；
Holding mechanism is arranged between the metallic plate, is used to support the metallic plate；
Wherein, the metallic plate alternately applies high pressure positive electricity and high pressure negative electricity successively, wherein the in-plane of the metallic plate with
The flow direction of vehicle exhaust is parallel, and the vehicle exhaust can axially flow in the gap between adjacent metal sheets.
6. electric field-enhanced ternary catalyzing unit according to claim 5, which is characterized in that the metallic plate selects plane gold
Belong to plate or the densely covered web frame of wire.
7. electric field-enhanced ternary catalyzing unit according to claim 5, which is characterized in that the holding mechanism includes at least
Two thoroughly do away with edge column.
8. electric field-enhanced ternary catalyzing unit according to claim 1, which is characterized in that the both ends of the shell pass through slow
Sealing material is rushed with the air inlet and the gas outlet to be connected；
Wherein, the cushion seal material is flexible material.
9. electric field-enhanced ternary catalyzing unit according to claim 8, feature are being, the air inlet and it is described go out
Gas port uses isolation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820381417.0U CN207989118U (en) | 2018-03-21 | 2018-03-21 | A kind of electric field-enhanced ternary catalyzing unit |
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|---|---|---|---|
| CN201820381417.0U CN207989118U (en) | 2018-03-21 | 2018-03-21 | A kind of electric field-enhanced ternary catalyzing unit |
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| CN207989118U true CN207989118U (en) | 2018-10-19 |
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| CN201820381417.0U Active CN207989118U (en) | 2018-03-21 | 2018-03-21 | A kind of electric field-enhanced ternary catalyzing unit |
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| CN (1) | CN207989118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204267A (en) * | 2018-03-21 | 2018-06-26 | 吉林大学 | A kind of electric field-enhanced ternary catalyzing unit |
| CN108204267B (en) * | 2018-03-21 | 2024-04-16 | 吉林大学 | Electric field reinforced three-way catalyst |
-
2018
- 2018-03-21 CN CN201820381417.0U patent/CN207989118U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204267A (en) * | 2018-03-21 | 2018-06-26 | 吉林大学 | A kind of electric field-enhanced ternary catalyzing unit |
| CN108204267B (en) * | 2018-03-21 | 2024-04-16 | 吉林大学 | Electric field reinforced three-way catalyst |
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