CN108223084B - Ultraviolet reinforced three-way catalyst - Google Patents
Ultraviolet reinforced three-way catalyst Download PDFInfo
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- CN108223084B CN108223084B CN201810232404.1A CN201810232404A CN108223084B CN 108223084 B CN108223084 B CN 108223084B CN 201810232404 A CN201810232404 A CN 201810232404A CN 108223084 B CN108223084 B CN 108223084B
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- ultraviolet
- way
- way catalytic
- way catalyst
- reinforced
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- 239000003054 catalyst Substances 0.000 title claims abstract description 61
- 230000003197 catalytic effect Effects 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 16
- 239000000969 carrier Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims description 61
- 239000002184 metal Substances 0.000 claims description 61
- 239000005340 laminated glass Substances 0.000 claims description 4
- 239000010970 precious metal Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 9
- 238000006555 catalytic reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000005281 excited state Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 239000003574 free electron Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004347 surface barrier Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
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
-
- 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
- F01N3/2086—Activating the catalyst by light, photo-catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses an ultraviolet reinforced three-way catalyst, which comprises: the shell, its both ends are coaxial to have air inlet and air outlet; a plurality of three-way catalytic support mechanisms fixedly disposed in the housing; a plurality of ultraviolet lamps fixedly disposed within the housing and proximate to the three-way catalytic support mechanism; wherein the three-way catalytic carrier mechanism comprises a plurality of three-way catalytic carriers which are uniformly arranged, the surfaces of the three-way catalytic carriers are coated with noble metal catalysts, and ultraviolet rays emitted by the ultraviolet lamps can irradiate on the surfaces of the three-way catalytic carriers. According to the ultraviolet reinforced three-way catalyst provided by the invention, the three-way catalyst carrier is irradiated by ultraviolet rays, so that the three-way catalyst reaction can be promoted, the catalytic efficiency is improved, and the emission of tail gas pollutants is reduced.
Description
Technical Field
The invention belongs to the technical field of automobile engines, and particularly relates to an ultraviolet reinforced three-way catalyst.
Background
Along with the stricter environmental protection requirements of national laws and regulations, automobile exhaust contains a large amount of pollution components, which pollute the environment and harm human health, and the automobile engine exhaust treatment technology is particularly important, wherein a three-way catalyst is a typical representative.
The ternary catalyst is a device for treating engine tail gas, and its effective component is noble metal catalyst, and its main action is to make the harmful substances of carbon monoxide, hydrocarbon and nitrogen oxide in the engine tail gas produce oxidation-reduction reaction to convert them into harmless carbon dioxide, water and nitrogen gas.
Principle of metal surface emission electron phenomenon: on the surface of the metal, a free electron is subjected to a plurality of nuclei, the potential energy of which is shown in fig. 5. In the figure, the horizontal axis is perpendicular to the metal surface, represents the distance from the metal surface, and the vertical axis represents the potential energy of electrons. At infinity, the potential energy is zero, i.e., wa=0. The lowest energy level of free electrons is-Wa, and electrons with energies below-Wa are bound electrons, which are bound in atoms and cannot move freely across the "barrier" between ions. When the potential energy of free electrons in the metal is-eφ, they can move freely in the metal, but can not be separated from the metal. The electrons must be given sufficient energy from the outside (> eφ), the kinetic energy of the electrons being such that it breaks free from the metal surface beyond the surface barrier to become spatially free electrons. The energy is externally transferred to the free electrons by irradiating the metal surface with ultraviolet rays, which is a photoemission phenomenon.
Basic principle of noble metal catalysis: the chemical reaction needs to overcome the potential barrier of the valence electron on the outer layer of the atom or the molecule, and the valence electron is generally provided with a stripping work through the heat energy of the atom or the molecule, so that positive and negative ions with charges are generated, and active groups of the chemical reaction are formed. The electron in the d or f orbit has very small work of extraction and is far lower than other orbit electrons. Thus, atoms of the d or f orbitals are typically used as catalysts to provide intermediate transition states of transfer orbitals and electrons, generating charged reactive groups that promote chemical reactions. Therefore, the catalytic core comes from the transfer orbit with lower extraction work and electrons thereof, and the extraction work of valence electrons at the outermost layer of the atomic nucleus can be changed to change the catalytic efficiency.
Currently, atoms of d or f orbitals are commonly used as catalysts, mostly noble metal elements.
The ultraviolet irradiation does not actually need to ionize the valence electrons of the catalyst and the reactant to generate self-electrons, and the valence electrons of the outer layer can be reduced to remove work as long as the ultraviolet irradiation activates the electrons of the catalyst or the reactant to the corresponding excited state, so that the catalytic efficiency is improved and the catalytic temperature is reduced. The reaction is essentially a photochemical reaction.
In the prior three-way catalyst improvement, the improvement is mostly carried out in terms of structure and catalyst carrier. There is no improvement from the viewpoint of improving the catalytic efficiency of the catalyst.
Disclosure of Invention
The invention aims to provide an ultraviolet reinforced three-way catalyst, which adopts ultraviolet to irradiate a three-way catalytic carrier to activate electrons of a noble metal catalyst to a corresponding excited state, so that catalytic reaction is promoted, and the catalytic efficiency of the three-way catalyst is improved.
The technical scheme provided by the invention is as follows:
the shell, its both ends are coaxial to have air inlet and air outlet;
a plurality of three-way catalytic support mechanisms fixedly disposed in the housing;
a plurality of ultraviolet lamps fixedly disposed within the housing and proximate to the three-way catalytic support mechanism;
wherein the three-way catalytic carrier mechanism comprises a plurality of three-way catalytic carriers which are uniformly arranged, the surfaces of the three-way catalytic carriers are coated with noble metal catalysts, and ultraviolet rays emitted by the ultraviolet lamps can irradiate on the surfaces of the three-way catalytic carriers.
Preferably, the three-way catalytic support mechanism comprises:
a plurality of metal electrode plates arranged in parallel at a certain distance, and coated with a noble metal catalyst on the surfaces of the metal electrode plates;
and a holding mechanism fixedly supported between the plurality of metal electrode plates and perpendicular to the metal electrode plates.
Preferably, the ultraviolet lamp is arranged at two sides of the three-way catalytic carrier mechanism along the axial direction of the shell.
Preferably, the metal electrode plate adopts a metal wire densely-distributed net or a plane metal plate.
Preferably, the three-way catalytic support mechanism comprises:
a plurality of thin metal pipes which are uniformly arranged along the axial direction of the shell to form a cylindrical cavity, and precious metal catalysts are coated on the surfaces of the thin metal pipes;
and a bracket fixedly supported between the plurality of thin metal pipes.
Preferably, the ultraviolet lamp is disposed at the center of the cylindrical cavity along the axial direction of the housing.
Preferably, the ultraviolet light emitted by the ultraviolet lamp has a wavelength of 100-320 nm.
Preferably, a heat insulation protection device is arranged on the outer side of the ultraviolet lamp.
Preferably, the heat insulation protection device is made of laminated glass.
Preferably, the two ends of the shell are respectively provided with a first wiring hole and a second wiring hole, and the power line is connected into the ultraviolet lamp from the first wiring hole and the second wiring hole.
The beneficial effects of the invention are as follows:
according to the ultraviolet reinforced three-way catalyst provided by the invention, the three-way catalyst carrier is irradiated by ultraviolet rays, and electrons of the noble metal catalyst are activated to the corresponding excited state, so that the catalytic reaction is promoted, and the catalytic efficiency of the three-way catalyst is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the ultraviolet-reinforced three-way catalyst according to the present invention.
Fig. 2 is a schematic diagram of a combination structure of a three-way catalytic carrier mechanism and an ultraviolet lamp according to a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a combination structure of a three-way catalytic carrier mechanism and an ultraviolet lamp according to a second embodiment of the present invention.
Fig. 4 is a schematic general structure of a second embodiment of the present invention.
FIG. 5 is a schematic diagram of the electronic potential of a metal surface according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1 to 4, the present invention provides an ultraviolet-reinforced three-way catalyst capable of improving the catalytic efficiency of the three-way catalyst. The ultraviolet-reinforced three-way catalyst includes: a housing 100 having a cylindrical cavity, both ends of which are coaxially provided with an air inlet 110 and an air outlet 120; the air inlet 110 is connected with an automobile exhaust pipe, and the air outlet 120 is connected with an automobile muffler through a pipeline. The inner diameters of the air inlet 110 and the air outlet 120 are the same and are smaller than the inner diameter of the housing 100. Preferably, the air inlet 110 and the air outlet 120 are made of flexible materials with buffer sealing and insulation, and the air inlet 110 and the air outlet 120 are made of insulating materials. The three-way catalytic carrier mechanisms 130 are fixedly installed in the shell 100, each three-way catalytic carrier mechanism comprises a plurality of three-way catalytic carriers which are uniformly arranged, the surfaces of the three-way catalytic carriers are coated with noble metal catalysts, and in order to enable automobile exhaust to uniformly contact with the three-way catalytic carriers, the catalytic effect is enhanced, and the three-way catalytic carrier mechanisms 130 are uniformly arranged in the shell 100. An ultraviolet lamp 140 fixedly disposed within the housing 100 and disposed proximate to the three-way catalytic support mechanism 130. The ultraviolet rays emitted from the ultraviolet lamp 140 are irradiated on the surface of the three-way catalytic carrier. Wherein, the two ends of the housing 100 are respectively provided with a first wiring hole 101 and a second wiring hole 102. The power lines are connected to the ultraviolet lamp 140 from the first wiring hole 101 and the second wiring hole 102, respectively, so that the power lines are well insulated and airtight with the housing 100. The ultraviolet lamp 140 emits far ultraviolet light with a wavelength of 100 to 320nm.
Embodiment one:
as shown in fig. 1 and 2, the three-way catalyst in the present embodiment includes, in order from left to right, an air inlet 110, a first connection hole 101, a housing 100, a three-way catalyst support mechanism 130 (located inside the housing 100), a second connection hole 102, and an air outlet 120. The air inlet 110, the air outlet 120 remain coaxial with the housing 100.
The air inlet 110 is connected with an automobile exhaust pipe, and the air outlet 120 is connected with an automobile muffler through a pipeline. The three-way catalytic carrier mechanism 130 is fixedly installed in the housing 100, and the three-way catalytic carrier mechanism 130 includes a plurality of metal electrode plates 150 arranged in parallel at a certain distance, where in this embodiment, the metal electrode plates 150 are three-way catalytic carriers. The surface of the metal electrode plate 150 is coated with a noble metal catalyst, and a holding mechanism composed of two or more upright posts 151 is symmetrically and fixedly arranged at two sides of the metal electrode plate 150 and is responsible for supporting the metal electrode plate 150, and the three-way catalytic carrier mechanism 130 is well insulated from the shell 100. Further preferably, the holding means is made of ceramic material, and insulation is maintained between the holding means and the metal electrode plate 150. The plurality of ultraviolet lamps 140 are uniformly arranged from top to bottom on the left and right sides (the sides where the holding mechanism is not arranged) of the three-way catalytic carrier mechanism 130, the ultraviolet lamps 140 are arranged along the axial direction of the shell 100, and the power wires are respectively connected to the ultraviolet lamps 140 from the first wiring holes 101 and the second wiring holes 102, so that the electricity and the shell 100 are well insulated and airtight. The ultraviolet lamp 140 is positioned corresponding to the space between two adjacent metal electrode plates 150, so that the ultraviolet light is more uniformly irradiated on the metal electrode plates 150. The metal electrode plate 150 is a wire mesh or a planar metal plate.
In this embodiment, the ultraviolet lamp 140 is fixedly installed in the heat insulation protection device 160, and the heat insulation protection device 160 is a transparent closed rectangular parallelepiped housing, which is fixedly installed in the housing 100 and is located at the left and right sides of the three-way catalytic carrier mechanism 130. The thermal shield 160 is used to keep the temperature around the ultraviolet lamp from damaging the ultraviolet lamp 140 too high. The insulating protective device 160 is made of a laminated glass material. Other transparent insulating materials may be used for the insulating protector 160.
The working principle of the three-way catalyst provided in the embodiment is as follows: the exhaust gas generated by the engine operation enters the three-way catalyst housing 100 through the gas inlet 110, passes through the gaps between the metal electrode plates 150 in the three-way catalyst carrier mechanism 130, and the ultraviolet lamp 140 is turned on and irradiates far ultraviolet rays to each metal electrode plate 150. Due to the effect of ultraviolet rays, electrons of the noble metal catalyst on the surface of the metal electrode plate 150 are activated to a corresponding excited state, so that the work of extraction is reduced, the progress of the catalytic reaction is promoted, and the efficiency of the three-way catalytic reaction is further improved.
Embodiment two:
as shown in fig. 1, 3 and 4, the three-way catalyst in the present embodiment includes, in order from left to right, an air inlet 110, a first connection hole 101, a housing 100, a plurality of three-way catalyst support mechanisms 130 (located inside the housing 100), a second connection hole 102, and an air outlet 120. Wherein the air inlet 110, the air outlet 120 remain coaxial with the housing 100.
The air inlet 110 is connected with an automobile exhaust pipe, and the air outlet 120 is connected with an automobile muffler through a pipeline. In this embodiment, the three-way catalytic carrier mechanism 130 includes a plurality of thin metal tubes 170, the thin metal tubes 170 are uniformly arranged along the axial direction of the housing to form a cylindrical cavity 171, the thin metal tubes 170 are thin-walled metal tubes, and precious metal materials are coated on the outer walls of the thin metal tubes 170 (i.e., the thin metal tubes 170 are the three-way catalytic carrier); each set of the thin metal pipes 170 is supported by a bracket (not shown) for maintaining the arrangement shape of the thin metal pipes 170. The ultraviolet lamp 140 is disposed at the center of the cylindrical cavity 171 in the axial direction, and is fixed by a bracket (not shown) between the ultraviolet lamp 140 and the thin metal tube 170 at the periphery thereof. The power lines are connected to the ultraviolet lamp 140 from the first wiring hole 101 and the second wiring hole 102, respectively, so that the power and the housing 100 are well insulated and sealed. The far ultraviolet light emitted from the ultraviolet lamp 140 is uniformly irradiated on the thin metal tube 170.
Among them, the ultraviolet lamp 140 and the thin metal pipes 170 and each group of thin metal pipes 170 are preferably supported and fixed by a ceramic bracket to maintain a structure and to be insulated from each other. The ultraviolet lamp 140 is fixedly installed at the outer side thereof with a transparent closed type cylindrical heat insulation protection device 180 which wraps the ultraviolet lamp 140 inside thereof to maintain the temperature around the ultraviolet lamp 140 from being excessively high to damage the ultraviolet lamp 140. The heat insulation protection device can adopt heat insulation laminated glass, and can also adopt other transparent heat insulation materials.
The working principle of the three-way catalyst provided by the embodiment is as follows: exhaust gas generated by engine operation enters the three-way catalyst through the air inlet 110 and passes through the area surrounded by the plurality of thin metal tubes 170 in the three-way catalyst carrier mechanism 130 and the housing 100. The ultraviolet lamp 140 is turned on to emit extreme ultraviolet light to be irradiated onto the outer wall of the thin metal tube 170. Due to the effect of ultraviolet rays, electrons of the noble metal catalyst coated on the outer wall of the thin metal tube 170 are activated to a corresponding excited state, so that the work of extraction is reduced, the progress of the catalytic reaction is promoted, and the efficiency of the three-way catalytic reaction is further improved.
In addition, when the intensity of ultraviolet light is enough, the catalyst removal work is obviously reduced, and at the moment, the metal coated on the outer wall of the three-way catalyst thin metal tube 170 can adopt non-noble metals such as nickel, copper, cobalt and the like to replace noble metals, so that the cost of the three-way catalyst is reduced.
According to the ultraviolet reinforced three-way catalyst provided by the invention, the three-way catalyst carrier is irradiated by ultraviolet rays, so that the three-way catalyst reaction can be promoted, the catalytic efficiency is improved, and the emission of tail gas pollutants is reduced.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. An ultraviolet light-enhanced three-way catalyst, comprising:
the shell, its both ends are coaxial to have air inlet and air outlet; the inner diameters of the air inlets and the air outlets are the same;
the air inlet is connected with an automobile exhaust pipe, and the air outlet is connected with an automobile muffler through a pipeline;
a plurality of three-way catalytic support mechanisms fixedly disposed in the housing;
a plurality of ultraviolet lamps fixedly disposed within the housing and proximate to the three-way catalytic support mechanism;
wherein the three-way catalytic carrier mechanism comprises a plurality of three-way catalytic carriers which are uniformly arranged, the surfaces of the three-way catalytic carriers are coated with noble metal catalysts, and ultraviolet rays emitted by the ultraviolet lamps can irradiate on the surfaces of the three-way catalytic carriers;
the three-way catalytic support mechanism includes:
a plurality of metal electrode plates arranged in parallel at a certain distance, and coated with a noble metal catalyst on the surfaces of the metal electrode plates;
a holding mechanism fixedly supported between the plurality of metal electrode plates and perpendicular to the metal electrode plates;
the ultraviolet lamp is axially arranged at two sides of the three-way catalytic carrier mechanism along the shell;
the plurality of ultraviolet lamps are uniformly arranged from top to bottom; the ultraviolet lamp is positioned in a position corresponding to the space between two adjacent metal electrode plates, so that the ultraviolet light is more uniformly irradiated on the metal electrode plates; or alternatively
The three-way catalytic support mechanism includes:
a plurality of thin metal pipes which are uniformly arranged along the axial direction of the shell to form a cylindrical cavity, and precious metal catalysts are coated on the surfaces of the thin metal pipes;
a bracket fixedly supported between the plurality of thin metal pipes;
the ultraviolet lamp is axially arranged in the center of the cylindrical cavity along the shell.
2. The ultraviolet light-reinforced three-way catalyst according to claim 1, wherein the metal electrode plate is a wire mesh or a planar metal plate.
3. The ultraviolet light-reinforced three-way catalyst according to claim 1, wherein the ultraviolet light emitted from the ultraviolet lamp has a wavelength of 100 to 320nm.
4. The ultraviolet light-reinforced three-way catalyst according to claim 3, wherein a heat-insulating protection device is provided outside the ultraviolet lamp.
5. The ultraviolet light-reinforced three-way catalyst according to claim 4, wherein the heat-insulating protective means is made of laminated glass.
6. The ultraviolet-reinforced three-way catalyst according to claim 1, wherein the two ends of the housing are respectively provided with a first wiring hole and a second wiring hole, and the power line is connected to the ultraviolet lamp through the first wiring hole and the second wiring hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810232404.1A CN108223084B (en) | 2018-03-21 | 2018-03-21 | Ultraviolet reinforced three-way catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810232404.1A CN108223084B (en) | 2018-03-21 | 2018-03-21 | Ultraviolet reinforced three-way catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108223084A CN108223084A (en) | 2018-06-29 |
| CN108223084B true CN108223084B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810232404.1A Active CN108223084B (en) | 2018-03-21 | 2018-03-21 | Ultraviolet reinforced three-way catalyst |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10244130A (en) * | 1997-02-28 | 1998-09-14 | Aqueous Res:Kk | Air purifying device |
| KR20030049291A (en) * | 2001-12-14 | 2003-06-25 | 엘지건설 주식회사 | A shell-and-tube type reactor for photocatalysis |
| JP2004270530A (en) * | 2003-03-07 | 2004-09-30 | Kanematsu Corp | Electrical insulating structure of gas treatment device |
| CN102247824A (en) * | 2011-05-16 | 2011-11-23 | 哈尔滨工业大学 | Preparation method for immobilized titanium dioxide (TiO2), and automotive exhaust purifier based on photocatalytic technology |
| CN102536394A (en) * | 2012-03-05 | 2012-07-04 | 尹协谦 | Terminal purifier for tail gas exhausted by vehicles |
| CN203640807U (en) * | 2013-12-30 | 2014-06-11 | 苏州嘉净环保科技股份有限公司 | Vehicle-mounted automobile tail gas purifying device |
| CN204225981U (en) * | 2014-11-26 | 2015-03-25 | 宁波三邦进出口有限公司 | Automobile exhaust pipe |
| CN207989117U (en) * | 2018-03-21 | 2018-10-19 | 吉林大学 | A kind of ternary catalyzing unit that ultraviolet light is strengthened |
-
2018
- 2018-03-21 CN CN201810232404.1A patent/CN108223084B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10244130A (en) * | 1997-02-28 | 1998-09-14 | Aqueous Res:Kk | Air purifying device |
| KR20030049291A (en) * | 2001-12-14 | 2003-06-25 | 엘지건설 주식회사 | A shell-and-tube type reactor for photocatalysis |
| JP2004270530A (en) * | 2003-03-07 | 2004-09-30 | Kanematsu Corp | Electrical insulating structure of gas treatment device |
| CN102247824A (en) * | 2011-05-16 | 2011-11-23 | 哈尔滨工业大学 | Preparation method for immobilized titanium dioxide (TiO2), and automotive exhaust purifier based on photocatalytic technology |
| CN102536394A (en) * | 2012-03-05 | 2012-07-04 | 尹协谦 | Terminal purifier for tail gas exhausted by vehicles |
| CN203640807U (en) * | 2013-12-30 | 2014-06-11 | 苏州嘉净环保科技股份有限公司 | Vehicle-mounted automobile tail gas purifying device |
| CN204225981U (en) * | 2014-11-26 | 2015-03-25 | 宁波三邦进出口有限公司 | Automobile exhaust pipe |
| CN207989117U (en) * | 2018-03-21 | 2018-10-19 | 吉林大学 | A kind of ternary catalyzing unit that ultraviolet light is strengthened |
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| Publication number | Publication date |
|---|---|
| CN108223084A (en) | 2018-06-29 |
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