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Wire mesh type diesel exhaust particulate filter and production method thereof

A technology of exhaust particles and wire mesh, applied in the field of air purification, can solve the problems of high fuel quality requirements, long matching cycle, complex regeneration control, etc., achieve continuous passive regeneration, reduce weight and back pressure, and improve capture efficiency Effect

Inactive Publication Date: 2014-04-23
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Particulate filter structures include wall flow type and open type, etc. Among them, cordierite and silicon carbide DPF adopt wall flow type, and the removal rate of PM can reach more than 90%. It is widely used in developed countries that implement Euro V and above emission standards. It belongs to the conventional choice in the post-treatment system of Euro V and above diesel vehicles, but cordierite and silicon carbide have the characteristics of high price, complicated regeneration control, long matching cycle, and high requirements for fuel quality.
The open particulate filter includes a wire mesh filter and a metal fiber sintered felt filter, which can reduce PM by 30-40%, does not require complicated regeneration strategies, has low cost, and has good sulfur resistance. The requirements are low, but there are also disadvantages such as heavy weight and difficult regeneration

Method used

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  • Wire mesh type diesel exhaust particulate filter and production method thereof
  • Wire mesh type diesel exhaust particulate filter and production method thereof
  • Wire mesh type diesel exhaust particulate filter and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 7 , Figure 9 As shown, the wire mesh type diesel engine exhaust particulate filter includes a stainless steel cylinder 1, and a stainless steel wire mesh 2 located in the stainless steel cylinder 1 with several layers of intertwined winding; the pin 4 passes through the stainless steel cylinder 1 and runs through the stainless steel wire Net 2; both ends of the pin 4 are fixed to the stainless steel cylinder 1; the stainless steel wire mesh 2 is coated with a catalyst coating 3.

[0031] Such as Figure 4 As shown, the stainless steel wire mesh 2 includes several layers of positive corrugated mesh b and stainless steel flat mesh a that are interwoven and intertwined in sequence.

[0032] The corrugation height of the positive corrugated net b is 1.0 mm, the corrugation angle is 30°, and the corrugation pitch is 3.5 mm. Wire mesh corrugated net, width 150mm, filter cylinder: stainless steel tube Ø 151 x 170 (length); particulate filter specification: ...

Embodiment 2

[0041] Such as Figure 8 , Figure 9 As shown, the wire mesh type diesel engine exhaust particulate filter includes a stainless steel cylinder 1, and a stainless steel wire mesh 2 located in the stainless steel cylinder 1 with several layers of intertwined winding; the pin 4 passes through the stainless steel cylinder 1 and runs through the stainless steel wire Net 2; both ends of the pin 4 are fixed to the stainless steel cylinder 1; the stainless steel wire mesh 2 is coated with a catalyst coating 3.

[0042] Such as Figure 5 As shown, the stainless steel wire mesh 2 includes several layers of regular corrugated net b and reverse corrugated net c interwoven and interwoven in sequence.

[0043] The corrugation height of the positive corrugated net b and the reverse corrugated net c is 3.0 mm, the corrugation angle is 60°, and the corrugation pitch is 5.5 mm. Particle collection filter specification: Ø150x150; wire mesh corrugated net, width 150mm; filter cylinder: stainle...

Embodiment 3

[0052] Such as Figure 9 As shown, the wire mesh type diesel engine exhaust particulate filter, the wire mesh type diesel engine exhaust particulate filter includes a stainless steel cylinder 1, and a stainless steel wire mesh 2 with several layers interwoven and wound inside the stainless steel cylinder 1; pins 4 passes through the stainless steel cylinder 1 and runs through the stainless steel wire mesh 2; both ends of the pin 4 are fixed to the stainless steel cylinder 1; the stainless steel wire mesh 2 is coated with a catalyst coating 3.

[0053] Such as Image 6 As shown, the stainless steel wire mesh 2 includes a positive corrugated mesh b, a stainless steel flat mesh a, and a stainless steel flat mesh a, which are intertwined in several layers at intervals.

[0054] The corrugation height of the positive corrugated net b and the reverse corrugated net c is 2 mm, the corrugation angle is 45°, and the corrugation pitch is 4.5 mm. Particle collection filter specificatio...

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Abstract

The invention relates to a wire mesh type diesel exhaust particulate filter and a production method thereof, and belongs to the technical field of air purification. The wire mesh type diesel exhaust particulate filter comprises a stainless steel barrel, a pin playing a role in fixation and a plurality of layers of interwoven and intertwined stainless steel wire meshes located in the stainless steel barrel, and each stainless steel wire mesh is coated with a catalyst coating. Wavy wire meshes and plain meshes are combined and intertwined differently, so that weight and back pressure of the particulate filter an be reduced effectively; filtration efficiency and back pressure can be regulated by different combining and intertwining modes; complexity of the section of the particulate filter can be ensured by the angle of the wavy meshes, particulate interception effect is better, and filtration efficiency is improved; by the catalyst coatings, temperature of soot particulate regeneration can be reduced effectively, necessary NO2 gas for regeneration is provided, and continuous passive particulate regeneration of the filter is realized.

Description

technical field [0001] The invention relates to a wire mesh type diesel engine tail gas particle collector and a preparation method thereof, belonging to the technical field of air purification. Background technique [0002] With the development of society, the number of automobiles increases rapidly, the total amount of automobile exhaust emissions continues to increase, and the proportion of automobile exhaust pollution to air pollution sources continues to increase, especially the particulate matter in the exhaust of diesel engines, which has caused serious damage to the environment. destroy. Therefore, countries all over the world have increasingly stringent requirements for energy saving and emission reduction of diesel engines. [0003] The pollutants emitted by diesel vehicles contain CO, HC, and NOx, and the particulate matter is mainly composed of dry carbon (soot), dissolved organic components (SOF) and a small amount of sulfuric acid and sulfate. Gaseous CO, HC ...

Claims

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Application Information

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IPC IPC(8): F01N3/022F01N3/28
Inventor 张辉王刚杨金曾德智刘洋
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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