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1. WO2022115978 - WASHABLE FILTER BODIES AND METHODS FOR PRODUCING

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Publication Number WO/2022/115978
Publication Date 09.06.2022
International Application No. PCT/CN2020/133021
International Filing Date 01.12.2020
IPC
B01D 46/24 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 39/20 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material
20of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
C04B 41/87 2006.1
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnating
85with inorganic materials
87Ceramics
CPC
B01D 2239/0485
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
04Additives and treatments of the filtering material
0471Surface coating material
0485on particles
B01D 2239/086
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
08Special characteristics of binders
086Binders between particles or fibres
B01D 2239/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
10Filtering material manufacturing
B01D 2239/1208
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1208Porosity
B01D 2239/1216
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1216Pore size
B01D 2239/1241
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1241Particle diameter
Applicants
  • CORNING INCORPORATED [US]/[US]
  • LU, Guisong [CN]/[CN] (SC)
Inventors
  • LU, Guisong
  • WU, Huiqing
  • WANG, He
Agents
  • SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) WASHABLE FILTER BODIES AND METHODS FOR PRODUCING
(FR) CORPS FILTRANTS LAVABLES ET LEURS PROCÉDÉS DE PRODUCTION
front page image
Abstract
(EN) A filtration article is disclosed comprising a plugged porous honeycomb filter body, deposits of inorganic particles within the plugged honeycomb filter body, the deposits having a porosity in a range of greater than 95 % to less than or equal to 99.9 % and an average thickness in a range of greater than or equal to 0.5 μm to less than or equal to 200 μm, and at least some of the inorganic particles being fused to each other and/or to the filter body. The particles are fused by one or more of low-melting inorganic particles, inorganic particles capable of chemical bonding organic fusion bonds or organic chemical bonds between inorganic particles coated with an organic binder.
(FR) La présente invention concerne un article de filtration qui comprend un corps filtrant en nid d'abeilles poreux bouché, des dépôts de particules inorganiques à l'intérieur du corps filtrant en nid d'abeilles bouché, les dépôts ayant une porosité dans une plage supérieure à 95 % à inférieure à 99,9 % et une épaisseur moyenne dans une plage supérieure ou égale à 0,5 µm et inférieure ou égale 200 µm, au moins une partie des particules inorganiques étant fusionnée entre elles et/ou au corps de filtre. Les particules sont fusionnées par une ou plusieurs particules inorganiques à bas point de fusion, des particules inorganiques capables de lier chimiquement des liaisons de fusion organiques ou des liaisons chimiques organiques entre des particules inorganiques revêtues d'un liant organique.
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