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A kind of preparation method of diesel engine exhaust PM catcher

A technology for diesel engines and traps, applied in the direction of engine components, machines/engines, chemical instruments and methods, etc., can solve the problems of increased gas exchange work, increased exhaust back pressure, increased engine fuel consumption, etc., to achieve Effects of reducing back pressure, increasing permeability, and reducing fuel consumption

Active Publication Date: 2022-03-01
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the increase in exhaust back pressure caused by traditional DPF cannot be ignored, and the increase in exhaust back pressure leads to an increase in gas exchange work, which ultimately leads to an increase in engine fuel consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A, leaching: configure the mixed solution of toluene and ethanol, wherein the mass ratio of toluene and ethanol is 2, take a certain quality of wood fiber and place it in the mixed solution for leaching for 12h, then place the wood fiber in a drying oven, Take it out after drying at 105°C for 12 hours;

[0023] B. Molding: Take phenolic resin glue according to 25% of the wood fiber quality, use alcohol with a volume concentration of 95% as a solvent, heat in a warm water bath, and prepare a uniform mixed solution, wherein the mass ratio of alcohol to phenolic resin glue is 1.5 , pour the mixed solution into the atomization device, spray evenly on the wood fiber after leaching, place the wood fiber after spraying the mixed solution in a rectangular parallelepiped mold with a square cross section, and press it to a thickness of 20mm, and the side length of the square is It is a segmented wood fiber filter body of 137 mm, and then put the mold into a drying oven to dry for...

Embodiment 2

[0031] A, leaching: configure the mixed solution of toluene and ethanol, wherein the mass ratio of toluene and ethanol is 2, take a certain quality of wood fiber and place it in the mixed solution for leaching for 12h, then place the wood fiber in a drying oven, Take it out after drying at 105°C for 12 hours;

[0032] B, molding: according to 30% of wood fiber quality, take phenolic resin glue, be 95% alcohol with volume concentration as solvent, warm water bath heating, be mixed with uniform mixed solution, wherein the mass ratio of alcohol and phenolic resin glue is 2 , pour the mixed solution into the atomization device, spray evenly on the wood fiber after leaching, place the wood fiber sprayed with the mixed solution in a cuboid mold with a square cross section, and press it to a thickness of 25mm, and the side length of the square is It is a segmented wood fiber filter body of 129 mm, and then put the mold into a drying oven to dry for 30 minutes, and the furnace tempera...

Embodiment 3

[0040] A, leaching: configure the mixed solution of toluene and ethanol, wherein the mass ratio of toluene and ethanol is 2, take a certain quality of wood fiber and place it in the mixed solution for leaching for 12h, then place the wood fiber in a drying oven, Take it out after drying at 105°C for 12 hours;

[0041] B. Molding: Take phenolic resin glue according to 25% of the wood fiber quality, use alcohol with a volume concentration of 95% as a solvent, heat in a warm water bath, and prepare a uniform mixed solution, wherein the mass ratio of alcohol to phenolic resin glue is 1.5 , pour the mixed solution into the atomization device, spray evenly on the leached wood fibers, place the wood fibers sprayed with the mixed solution in a rectangular parallelepiped mold with a square cross-section, and press it to a thickness of 30mm, and the side length of the square is It is a segmented wood fiber filter body of 125 mm, and then put the mold into a drying oven to dry for 30 min...

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PUM

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Abstract

The invention relates to the technical field of diesel engine tail gas purification, in particular to a method for preparing a diesel engine tail gas PM collector, which uses wood fiber, phenolic resin, nano-silicon dioxide, ethanol, toluene, nitrogen, argon, high-temperature sealant, Refractory alumina powder and activator are used as raw materials, and the diesel engine exhaust PM collector is prepared through 7 steps of leaching, forming, carbonization, hole processing, ceramicization, gluing and sealing. The thickness of the wood fiber is 100 ‑300μm, length 2‑3cm, width 1‑2mm. The invention uses the natural and well-defined microporous structure of wood as a biological template to prepare biomass wood fiber ceramics, and processes macroscopic through holes on the basis of microscopic pores to make a diesel engine exhaust PM trap, which reduces material costs. The permeability of the PM filter is increased, the back pressure of the particle filter is reduced, and finally the fuel consumption of the diesel engine is reduced.

Description

technical field [0001] The invention relates to the technical field of diesel engine tail gas purification, in particular to a preparation method of a diesel engine tail gas PM collector. Background technique [0002] Diesel engines have the advantages of high thermal efficiency, good economic performance, high reliability, and strong adaptability, making them widely used in transportation, agricultural engineering, power generation, and commerce. However, particulate matter (PM) produced by incomplete combustion of diesel engines threatens human health and the ecological environment. On the one hand, due to the respirable particle size of PM, PM can be directly inhaled into human lungs, causing human cardiopulmonary diseases; on the other hand, PM is mainly composed of carbon black, which is one of the factors leading to global warming. Therefore, countries have introduced more and more stringent emission regulations to limit PM emissions, not only limiting the quality of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/022B01D39/20C04B35/80C04B35/52C04B35/622C04B35/66C04B41/87
CPCF01N3/022B01D39/20C04B38/0675C04B35/52C04B35/622C04B35/66C04B41/87C04B41/5035F01N2260/06B01D2239/10C04B41/4535C04B35/806
Inventor 郭秀荣高旗杜丹丰
Owner NORTHEAST FORESTRY UNIVERSITY