Apparatus for coating a filter substrate

Patent metadata

Field	Value
Publication number	US-11724251-B2
Application number	US-202016948663-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	Mar 25, 2014
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

An apparatus of coating a filter substrate comprising a plurality of channels and an apparatus is disclosed. The apparatus comprises: (i) a containment means for receiving a pre-determined amount of the liquid; and (ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate. The containment means is locatable at an upper end of the filter substrate; and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate.

First claim

We claim:

1. An apparatus for coating a filter substrate with a liquid, which apparatus comprises:
(i) a containment means for receiving a pre-determined amount of the liquid; and
(ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate;

wherein the containment means is locatable at an upper end of the filter substrate, and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate; and
wherein the containment means comprises a template for covering an area or areas of the upper end face of the filter substrate.

2. The apparatus according to claim 1 further comprising (iii) means for applying a vacuum to a lower end of the filter substrate.

3. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.

4. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a single dose of the liquid.

5. The apparatus according to claim 1 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper end face of the filter substrate and onto an exterior side surface of the filter substrate, wherein the sealing means comprises at least one inflatable collar.

6. The apparatus according to claim 1 , wherein the filter substrate comprises a plurality of channels, wherein each channel has an open end and a closed end.

7. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.

8. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a single dose of the liquid.

9. The apparatus according to claim 2 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper end face of the filter substrate and onto an exterior side surface of the filter substrate, wherein the sealing means comprises at least one inflatable collar.

10. The apparatus according to claim 2 , wherein the filter substrate comprises a plurality of channels, wherein each channel has an open end and a closed end.

Assignees

• Johnson Matthey Plc
• Johnson Matthev Public Ltd Comoanv

Inventors

• Arulraj Kaneshalingham
• Bhantoo Jenita
• Savage Jamie
• Smith Andrew
• Wang Lifeng
• Yokota Daisuke

Classifications

• F01N3/208

  Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent · CPC title

• F01N3/28

  Construction of catalytic reactors · CPC title

• F01N3/022

  characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous · CPC title

• C04B41/00

  After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone (conditioning of the materials prior to shaping C04B40/00; applying liquids or other fluent materials to surfaces, in general B05; grinding or polishing B24; apparatus or processes for treating or working shaped articles of clay or other ceramic compositions, slag or mixtures containing cementitious material B28B11/00; working stone or stone-like materials B28D; glazes, other than cold glazes, C03C8/00; etching, surface-brightening or pickling compositions C09K13/00) · CPC title

• B01D37/02 Primary

  Precoating the filter medium; Addition of filter aids to the liquid being filtered {(devices for feeding reagents C02F1/685 and sub-groups; filter aids)} · CPC title