Exhaust gas treating device and manufacturing method of honeycomb structure

一种废气处理装置、蜂窝结构体的技术，应用在排气装置、消音装置、气体通道等方向，能够解决废气温度降低等问题，达到缩小大小、难以速冷、容易升温的效果

Active Publication Date: 2017-03-15
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, recently, the temperature of the exhaust gas is tending to decrease by improving the combustion efficiency of the internal combustion engine

Method used

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  • Exhaust gas treating device and manufacturing method of honeycomb structure
  • Exhaust gas treating device and manufacturing method of honeycomb structure
  • Exhaust gas treating device and manufacturing method of honeycomb structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] 13 parts by mass of a pore-forming material, 35 parts by mass of a dispersion medium, 6 parts by mass of an organic binder, and 0.5 parts by mass of a dispersant were added to 100 parts by mass of a cordierite chemical raw material, mixed and kneaded to prepare a base earth. As cordierite-forming raw materials, alumina, aluminum hydroxide, kaolin, talc, and silica are used. Water was used as a dispersion medium, coke with an average particle diameter of 1 to 10 μm was used as a pore-forming material, hydroxypropylmethylcellulose was used as an organic binder, and ethylene glycol was used as a dispersant. The particle diameter and amount of the pore-forming material are controlled, thereby controlling the pore diameter and porosity of the partition wall.

[0112] Next, in order to obtain a formed honeycomb body having partition walls and partition walls, the kneaded clay is extruded using a predetermined mold to obtain a cylindrical formed honeycomb body.

[0113] Next...

Embodiment 2～9、 comparative example 1～5

[0136] Except for the case where it was changed as shown in Table 1, it carried out similarly to Example 1, and evaluated "system total length", "purification rate", and "PM capture|collection". The results are shown in Table 1.

[0137] From Table 1, it is clear that the exhaust gas treatment devices of Examples 1 to 9 can be reduced in overall size compared with the exhaust gas treatment devices of Comparative Examples 1 to 5, are easy to heat up, and are difficult to rapidly cool.

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PUM

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Abstract

The invention provides an exhaust gas treating device and a manufacturing method of a honeycomb structure. The exhaust gas treating device can reduce in size, is capable of easiness of temperature rising and difficulty in fast cooling. The exhaust gas treating device includes: a honeycomb structure including an inner honeycomb structure body including a honeycomb substrate having porous inner partition walls and a circumferential wall disposed at a circumference of the honeycomb substrate, an outer honeycomb structure body disposed at a position which surrounds a part of a circumference of the inner honeycomb structure body and is away from the inner inflow end face, and plugging portions; and a can member storing the honeycomb structure. The can member includes an inflow tube and a barrel portion which is continuous with the inflow tube, and in the barrel portion an outlet is formed, the honeycomb structure is stored in the can member in a state of having a clearance between a second end face and the can member and having a clearance between the outer outflow end face and the can member.

Description

technical field [0001] The present invention relates to an exhaust gas treatment device and a method for manufacturing a honeycomb structure. More specifically, it relates to an exhaust gas treatment device and a method of manufacturing a honeycomb structure that can be reduced in overall size, are easy to heat up, and are difficult to rapidly cool. Background technique [0002] In an internal combustion engine, generation of combustion residues generated when fuel is burned becomes a problem. Therefore, from the point of view of considering the atmospheric environment, it is required to remove the toxic components contained in the exhaust gas without causing particulate matter such as soot (coal, smoke) and ash (ash, ash) (hereinafter referred to as " PM” situation.) Countermeasures for release to the atmosphere. [0003] Conventionally, restrictions on the removal of PM discharged from diesel engines have tended to be strengthened worldwide, and as trapping filters (here...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/022F01N3/035B01D39/20
CPCB01D39/20F01N3/0222F01N3/035F01N3/2828F01N2330/06B01D2239/10B01D46/247B01D46/2459B01D46/2474B01D46/2484B01D46/2482B01D46/2476F01N2470/18F01N13/0097B01D46/2422Y02T10/12B01D46/2455B01D46/0001B01D46/0047B01D46/4236
Inventor 青木崇志
Owner NGK INSULATORS LTD
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