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1. WO2020109778 - APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS

Publication Number WO/2020/109778
Publication Date 04.06.2020
International Application No. PCT/GB2019/053339
International Filing Date 26.11.2019
IPC
B05C 7/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
7Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
04the liquid or other fluent material flowing or being moved through the work; the work being filled with liquid or other fluent material and emptied
B01J 37/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
CPC
B01D 2255/9155
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
915Catalyst supported on particulate filters
9155Wall flow filters
B01D 2279/30
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2279Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
30for treatment of exhaust gases from IC Engines
B01D 46/0001
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters ; , i.e. particle separators; or filtering processes specially modified for separating dispersed particles from gases or vapours
0001Making filtering elements
B01D 46/2418
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters ; , i.e. particle separators; or filtering processes specially modified for separating dispersed particles from gases or vapours
24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
2403characterised by the physical shape or structure of the filtering element
2418Honeycomb filters
B01D 53/9418
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9404Removing only nitrogen compounds
9409Nitrogen oxides
9413Processes characterised by a specific catalyst
9418for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
B01J 35/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
04Foraminous structures, sieves, grids, honeycombs
Applicants
  • JOHNSON MATTHEY PUBLIC LIMITED COMPANY [GB]/[GB]
Inventors
  • BURGESS, Neil
  • SAVAGE, Jamie
  • THOMSON, Craig
Agents
  • WILSON, Nicola
Priority Data
1819455.529.11.2018GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS
(FR) APPAREIL ET MÉTHODE DE REVÊTEMENT DE SUBSTRATS AVEC DES COUCHES D'IMPRÉGNATION
Abstract
(EN)
A substrate coating apparatus comprises a source of a washcoat, a washcoat showerhead comprising a showerhead plate having a plurality of nozzle apertures for discharging the washcoat towards a face of the substrate located below the washcoat showerhead, a conduit fluidly connecting the source of the washcoat to the washcoat showerhead for supplying washcoat to the washcoat showerhead and a partition ring located between the washcoat showerhead and the face of the substrate. The partition ring is dimensioned to be smaller than the face of the substrate and the substrate coating apparatus is configured in use to bring the partition ring into contact with the face of the substrate to thereby define a central region of the face of the substrate which lies within an interior of the partition ring and a peripheral region of the face of the substrate which lies outside the partition ring. The showerhead plate of the washcoat showerhead is configured in use to discharge washcoat onto both the central region and the peripheral region of the face of the substrate.
(FR)
Un appareil de revêtement de substrat comprend une source d'une couche d'imprégnation, une tête de projection de couche d'imprégnation comprenant une plaque de tête de projection ayant une pluralité d'ouvertures de buse pour décharger la couche d'imprégnation vers une face du substrat située en dessous de la tête de projection de couche d'imprégnation, un conduit reliant de manière fluidique la source de la couche d'imprégnation à la tête de projection de couche d'imprégnation pour fournir une couche d'imprégnation à la tête de projection de couche d'imprégnation et une bague de séparation située entre la tête de projection de couche d'imprégnation et la face du substrat. La bague de séparation est dimensionnée pour être plus petite que la face du substrat et l'appareil de revêtement de substrat est conçu lors de l'utilisation pour amener la bague de séparation en contact avec la face du substrat pour définir ainsi une région centrale de la face du substrat qui se trouve à l'intérieur de la bague de séparation et une région périphérique de la face du substrat qui se trouve à l'extérieur de la bague de séparation. La plaque de tête de projection de la tête de projection de couche d'imprégnation est configurée en utilisation pour décharger une couche d'imprégnation à la fois sur la région centrale et sur la région périphérique de la face du substrat.
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