Methods of making honeycomb bodies having inorganic filtration deposits

Patent metadata

Field	Value
Publication number	US-2025002418-A1
Application number	US-202418883507-A
Country	US
Kind code	A1
Filing date	Sep 12, 2024
Priority date	Aug 31, 2018
Publication date	Jan 2, 2025
Grant date	—

Abstract

A method for applying a surface treatment to a plugged honeycomb body comprising porous wall includes: mixing particles of an inorganic material with a liquid vehicle and a binder material to form a liquid-particulate-binder stream; mixing the liquid-particulate-binder stream with an atomizing gas, directing the liquid-particulate-binder stream into an atomizing nozzle thereby atomizing the particles into liquid-particulate-binder droplets comprised of the liquid vehicle, he binder material, and the particles; conveying the droplets toward the plugged honeycomb body by a gaseous carrier stream, wherein the gaseous carrier stream comprises a carrier gas and the atomizing gas; evaporating substantially all of the liquid vehicle from the droplets to form agglomerates comprised of the particles and the binder material; depositing the agglomerates onto the porous walls of the plugged honeycomb body; wherein the deposited agglomerates are disposed on, or in, or both on and in, the porous walls.

First claim

What is claimed is:

1 . An apparatus for applying an inorganic material to a plugged honeycomb body comprising porous walls, the apparatus comprising:
a duct spanning from a first end to a second end; a deposition zone for housing the plugged honeycomb body in fluid communication with the duct at the second end of the duct; a heat source; a carrier gas supply, an atomizing gas supply, and a mixture supply; and an atomizing nozzle in fluid communication with a chamber of the duct.

2 . The apparatus of claim 1 , wherein the duct comprises a section of uniform diameter and a section of non-uniform diameter.

3 . The apparatus of claim 2 , wherein the duct comprises a first section of non-uniform diameter and a second section of non-uniform diameter.

4 . The apparatus of claim 3 , wherein the first section of non-uniform diameter is located at the first end of the duct and comprises a diameter that increases from the first end toward the section of uniform diameter and the second section of non-uniform diameter comprises a diameter that decreases from the section of uniform diameter toward the deposition zone.

5 . The apparatus of claim 1 , wherein the heat source is in contact with an external wall of the duct.

6 . The apparatus of any of claim 1 , wherein the heat source is in contact with the carrier gas supply.

Assignees

• Corning Inc

Inventors

• Lewis Mark Alan
• Liu Cai
• Powers Dale Robert
• St Clair Todd Parrish
• Wang Jianguo
• Wu Huiqing
• Xia Fei
• Xing Xinfeng
• Zhong Danhong

Classifications

• C04B41/87

  Ceramics · CPC title

• C04B41/4543 Primary

  by spraying, e.g. by atomising · CPC title

• C04B2111/00793

  as filters or diaphragms · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• B05B1/02 Primary

  designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, {or having an outlet of particular shape}(B05B1/26, B05B1/28, B05B1/34 take precedence) · CPC title