Method of making filter article having deposit of filter material
By depositing agglomerates formed by inorganic material particles and binder on the wall of the porous honeycomb, the filtration efficiency and pressure drop loss problems of the wall flow filter are solved, efficient filtration performance and material utilization are achieved, and strict emission regulations are met.
Patent Information
- Application Number
- CN202280101958.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-30
- Publication Date
- 2025-08-12
AI Technical Summary
Existing wall flow filters have shortcomings in filtration efficiency and pressure drop losses, and the raw material utilization efficiency is not high, making it difficult to meet the increasingly stringent automotive exhaust emission regulations.
Inorganic material particles are mixed with binder to form liquid-particle-binder droplets, and agglomerates are formed through atomization and evaporation, and deposited on or in the walls of the porous honeycomb to form filter material deposits, avoiding the use of particle dispersants and adhesion promoters, increasing the deposition rate and reducing the coating load.
It improves filtration efficiency, meets the ultra-high filtration efficiency requirements of Euro 7 regulations, and reduces pressure drop losses and simplifies the preparation process.
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Figure CN120476012A_ABST
Abstract
Citation Information
Patent Citations
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