Unlock instant, AI-driven research and patent intelligence for your innovation.

Wall-flow honeycomb ceramic filter with high filtering efficiency and preparation method thereof

A technology of filtration efficiency and honeycomb ceramics, applied in the field of wall-flow honeycomb ceramic filter bodies and their preparation, can solve problems such as dust particle clogging, and achieve the effects of meeting technical requirements, improving performance, and improving filtration efficiency

Inactive Publication Date: 2017-10-20
WUHU BAOYI AMUSEMENT EQUIP
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology still cannot solve the above-mentioned problem of dust particle clogging, and it is urgent to research and develop effective technical measures to improve the performance of wall-flow honeycomb ceramics, improve filtration efficiency, and prolong service life.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The wall-flow type honeycomb ceramic filter body with high filtration efficiency of the present embodiment is prepared by the following steps:

[0020] (1) Mix kaolin and talcum powder at a mass ratio of 1:0.9, dry in a vacuum drying oven at 90°C for 6 hours, then wet ball mill, dry, crush and sieve to obtain a 250-mesh mixed powder, ready to use;

[0021] (2) Put alumina micropowder and mixed powder in a reaction vessel at a mass ratio of 1:0.03, add deionized water equivalent to 20 times the weight of alumina micropowder, and ultrasonically oscillate for 60 minutes to fully disperse it, while stirring Add titanium sulfate solution dropwise, stir magnetically at room temperature for 40 minutes, then add ammonia water dropwise to adjust the pH value of the system to 10, continue magnetically stirring for 3 hours, filter, wash, and dry to obtain surface-modified alumina micropowder;

[0022] (3) Add surface-modified alumina micropowder, clay, and wood powder into the mix...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a wall-flow honeycomb ceramic filter with high filtering efficiency. A preparation method for the wall-flow honeycomb ceramic filter is characterized by comprising the following steps: mixing alumina micro powder with a flux and carrying out modification on the surfaces of alumina particles with titanium sulfate as a precursor; then preparing pug and subjecting the pug to vacuum refining, ageing, extrusion molding and microwave drying so as to obtain a dry green body; then preparing modified slurry and subjecting the surface of the dry green body to modification; and carrying out high-temperature sintering so as to obtain the wall-flow honeycomb ceramic filter with high filtering efficiency. The ceramic filter provided by the invention has the characteristics of thermal shock resistance, high strength, high porosity and the like, shows excellent performance and can meet technical requirements of purification of high-temperature dust-containing exhaust gas.

Description

technical field [0001] The invention belongs to the field of ceramics, in particular to a wall-flow honeycomb ceramic filter body with high filtration efficiency and a preparation method thereof. Background technique [0002] At present, wall-flow honeycomb ceramics have been widely used in the technical field of exhaust gas purification such as diesel engine exhaust gas treatment as filter elements for dusty exhaust gas purification, especially high-temperature dusty gas dedusting treatment. However, during the long-term dedusting operation of wall-flow honeycomb ceramics, fine dust easily enters the micropores in the channel wall with the airflow, and accumulates in the neck of the connected micropores, thereby reducing the porosity of the honeycomb ceramics and increasing Gas filtration resistance, reducing the treatment efficiency of dusty exhaust gas filtration. Although some methods such as high-pressure pulse backflushing can remove the particles in the micropores in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/628C04B35/64C04B41/87C04B38/06B01D39/20B01D46/00
CPCB01D39/2068B01D46/0001B01D46/0027B01D2275/20C04B35/10C04B35/62813C04B35/64C04B38/0675C04B41/009C04B41/5024C04B41/87C04B2235/3445C04B2235/349C04B2235/448C04B2235/606C04B2235/6562C04B2235/6567C04B38/0006C04B41/4539C04B41/0072
Inventor 张庆
Owner WUHU BAOYI AMUSEMENT EQUIP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com