CN218030336U

CN218030336U - Quaternary catalytic converter based on porous silicon carbide

Info

Publication number: CN218030336U
Application number: CN202221889706.4U
Authority: CN
Inventors: 曲慧
Original assignee: Jilin New Star Metal Materials Co ltd
Current assignee: Jilin New Star Metal Materials Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-13
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a quaternary catalytic converter based on porous carborundum relates to catalytic converter technical field, which comprises a housin, the both ends of casing are fixed with air inlet hood mouth and air outlet hood mouth respectively, one side that the inner wall of casing is close to air inlet hood mouth is fixed with SMC carrier ring, SMC carrier ring bottom is provided with one-level SMC carrier, the inner wall of casing is fixed with the net set casing, the opening has been seted up at the top center of net set casing, the cavity has been seted up at the top edge of net set casing, be equipped with GPF in the opening, be equipped with TWC carrier ring in the cavity, the pottery that the net set casing was makeed for the carborundum, the bottom of net set casing is fixed with triple effect catalyst TWC carrier ring, the bottom of triple effect catalyst TWC carrier ring is equipped with triple effect catalyst TWC. The utility model discloses to the catalytic combustion ability of particulate matter, help improving GPF's regeneration rate simultaneously.

Description

Quaternary catalytic converter based on porous silicon carbide

Technical Field

The utility model relates to a catalytic converter technical field especially relates to a quaternary catalytic converter based on porous carborundum.

Background

The catalytic converter is a part of an automobile exhaust system, is an exhaust purification device which converts CO, HC and NOx in exhaust gas into harmless gas to human bodies by using the action of a catalyst, and is also called as a catalytic converter which converts three harmful gases of CO, HC and NOx in the exhaust gas into harmless gases of carbon dioxide, nitrogen, hydrogen and water through oxidation reaction, reduction reaction, aqueous gas reaction and water vapor modification reaction under the action of the catalyst.

The GPF regeneration rate of the conventional SMC quaternary catalytic converter is low, the direct and full catalytic combustion of particulate matters is difficult, and the accumulation of the particulate matters is easy to cause.

Therefore, we have designed a quaternary catalytic converter based on porous silicon carbide.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and provides a quaternary catalytic converter based on porous silicon carbide. The advantages are that: catalytic combustion capability on particulate matter while helping to increase the rate of regeneration of the GPF.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a quaternary catalytic converter based on porous carborundum, includes the casing, the both ends of casing are fixed with air inlet hood mouth and air outlet hood mouth respectively, one side that the inner wall of casing is close to the air inlet hood mouth is fixed with SMC carrier ring, SMC carrier ring bottom is provided with the one-level SMC carrier, the inner wall of casing is fixed with the net set casing, the opening has been seted up at the top center of net set casing, the cavity has been seted up at the top edge of net set casing, be equipped with GPF in the opening, be equipped with TWC carrier ring in the cavity.

This practicality further sets up to: the grid fixing shell is a ceramic piece made of silicon carbide.

This practicality further sets up to: and a three-way catalyst TWC carrier ring is fixed at the bottom of the grid fixing shell, and a three-way catalyst TWC is arranged at the bottom of the three-way catalyst TWC carrier ring.

This practicality further sets up to: and a secondary SMC carrier is arranged at the bottom of the three-way catalyst TWC.

This practicality further sets up to: and a wind-homogenizing ring is fixed in the air inlet cover opening through a plurality of connecting rods.

This practicality further sets up to: the wind homogenizing ring is in a circular truncated cone structure, and the middle part of the wind homogenizing ring is in a circular truncated cone-shaped through hole structure.

This practicality further sets up to: and a plurality of connecting rods are provided with collision blocks.

The utility model has the advantages that:

1. the utility model discloses, during the use, intercommunication air inlet hood mouth and air outlet hood mouth, when the tail gas is through the net set casing, for its needs through GPF and TWC carrier ring in the through-hole, GPF and TWC carrier ring have great contact interval, improve reaction speed, the direct synchronous reaction temperature who is used for improving GPF of the heat of TWC carrier ring release during reaction, TWC carrier ring is located GPF's week side, the heat of TWC carrier ring release during reaction improves GPF to the catalytic combustion ability of particulate matter, help improving GPF's regeneration rate simultaneously.

2. The utility model discloses, the gas after GPF and TWC carrier ring reaction is further catalyzed to three way catalyst TWC, and conversion carbon monoxide, hydrocarbon, oxynitrides are discharged at last, and three way catalyst TWC' S bottom is equipped with the second grade SMC carrier, and GPF catches the PM granule that leaks and contains S impurity and can burn in the second grade SMC carrier of centre.

3. The utility model discloses, utilize the even wind ring of connecting rod fixed, the gas that blooms from the air inlet cover mouth is spread by even wind ring for gas is even, and the reaction is abundant, utilizes to add the impact piece of establishing, can collide with granule in the gas, makes its breakage, prevents to block up for the reaction.

Drawings

Fig. 1 is a schematic perspective view of a quaternary catalytic converter based on porous silicon carbide according to the present invention;

fig. 2 is a schematic view of a cross-sectional view of a quaternary catalytic converter based on porous silicon carbide according to the present invention;

fig. 3 is a schematic structural view of a mesh stationary casing of a quaternary catalytic converter based on porous silicon carbide according to the present invention;

fig. 4 is the utility model provides an intake cover mouth structural schematic of quaternary catalytic converter based on porous silicon carbide.

In the figure: 1. a housing; 2. an air inlet cover opening; 3. an air outlet cover opening; 4. SMC carrier ring; 5. a primary SMC carrier; 6. a grid fixing shell; 7. GPF; 8. a TWC carrier ring; 9. three-way catalyst TWC carrier ring; 10. a three-way catalyst TWC; 11. a secondary SMC carrier; 12. a cavity; 13. a port; 14. a connecting rod; 15. a wind homogenizing ring; 16. an impact mass.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, a quaternary catalytic converter based on porous silicon carbide comprises a shell 1, an air inlet cover opening 2 and an air outlet cover opening 3 are respectively fixed at two ends of the shell 1, an SMC carrier ring 4 is fixed at one side of the inner wall of the shell 1 close to the air inlet cover opening 2, a primary SMC carrier 5 is arranged at the bottom of the SMC carrier ring 4, a grid fixing shell 6 is fixed at the inner wall of the shell 1, a through opening 13 is formed in the top center of the grid fixing shell 6, a cavity 12 is formed in the top edge of the grid fixing shell 6, GPF7 is arranged in the through opening 13, a TWC carrier ring 8 is arranged in the cavity 12, when tail gas passes through the grid fixing shell 6, the tail gas needs to pass through the GPF7 and the TWC carrier ring 8 in the through opening 13, the GPF7 and the TWC carrier ring 8 have a larger contact area, reaction speed is improved, and heat released during reaction of the TWC carrier ring 8 is directly and synchronously used for improving the reaction temperature of the GPF 7.

Specifically, the grid fixing shell 6 is a ceramic piece made of silicon carbide, and the silicon carbide has excellent strength, high-temperature impact resistance and chemical corrosion resistance, can resist high temperature to about 1560 ℃, and prolongs the service life of the silicon carbide.

Specifically, a three-way catalyst TWC carrier ring 9 is fixed at the bottom of the grid fixing shell 6, a three-way catalyst TWC10 is arranged at the bottom of the three-way catalyst TWC carrier ring 9, and the three-way catalyst TWC10 further catalyzes gas after reaction between the GPF7 and the TWC carrier ring 8 to convert carbon monoxide, hydrocarbons and nitrogen oxides and finally discharges the converted gas.

Specifically, the bottom of the three-way catalyst TWC10 is provided with a secondary SMC carrier 11, and GPF7 catches leaked PM particles and S-containing impurities can be combusted in the middle secondary SMC carrier 11.

Specifically, the air-equalizing ring 15 is fixed inside the air inlet cover opening 2 through a plurality of connecting rods 14, and the air blown out from the air inlet cover opening 2 is spread by the air-equalizing ring 15 fixed by the connecting rods 14, so that the air is uniform.

Specifically, the shape of the air-homogenizing ring 15 is a circular truncated cone structure, and the middle part of the air-homogenizing ring is a circular truncated cone-shaped through hole structure, so that gas can be spread uniformly, and the air-homogenizing ring is beneficial to realizing conversion of uniform and sufficient contact of the gas.

Specifically, the connecting rods 14 are all provided with the collision blocks 16, and the collision blocks 16 can collide with particles in the gas to break the particles, so that blockage is prevented, and reaction is accelerated.

The working principle is as follows: when the exhaust gas purification device is used, the gas inlet cover port 2 and the gas outlet cover port 3 are communicated, when exhaust gas passes through the grid fixing shell 6, the exhaust gas needs to pass through the GPF7 and the TWC carrier ring 8 in the through port 13, the GPF7 and the TWC carrier ring 8 have larger contact areas, the reaction speed is improved, heat released during reaction of the TWC carrier ring 8 is directly and synchronously used for improving the reaction temperature of the GPF7, the TWC carrier ring 8 is located on the peripheral side of the GPF7, and heat released during reaction of the TWC carrier ring 8 improves the catalytic combustion capacity of the GPF7 on particles and is beneficial to improving the regeneration rate of the GPF 7.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a quaternary catalytic converter based on porous carborundum, includes casing (1), its characterized in that, the both ends of casing (1) are fixed with air inlet cover mouth (2) and air outlet cover mouth (3) respectively, one side that the inner wall of casing (1) is close to air inlet cover mouth (2) is fixed with SMC carrier ring (4), SMC carrier ring (4) bottom is provided with one-level SMC carrier (5), the inner wall of casing (1) is fixed with net set casing (6), opening (13) have been seted up at the top center of net set casing (6), cavity (12) have been seted up at the top edge of net set casing (6), be equipped with GPF (7) in opening (13), be equipped with TWC carrier ring (8) in cavity (12).

2. A quaternary catalytic converter based on porous silicon carbide according to claim 1, characterized in that the mesh-fixed shell (6) is a ceramic piece made of silicon carbide.

3. A four-way catalytic converter based on porous silicon carbide according to claim 1, characterized in that a three-way catalyst TWC carrier ring (9) is fixed to the bottom of the mesh-fixed shell (6), and a three-way catalyst TWC (10) is provided at the bottom of the three-way catalyst TWC carrier ring (9).

4. A quaternary catalytic converter based on porous silicon carbide according to claim 3, characterized in that the bottom of the three-way catalyst TWC (10) is provided with a secondary SMC carrier (11).

5. The quaternary catalytic converter based on porous silicon carbide according to claim 1, characterized in that the inside of the inlet hood opening (2) is fixed with a wind evening ring (15) by several connecting rods (14).

6. The quaternary catalytic converter based on porous silicon carbide according to claim 5, characterized in that the wind homogenizing ring (15) is in the shape of a circular truncated cone structure, and the middle part is in the shape of a circular truncated cone through hole structure.

7. A quaternary catalytic converter based on porous silicon carbide according to claim 6, characterized in that collision masses (16) are mounted on several of the connecting rods (14).