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US 2025/0018323 A1Published application
Honeycomb filter bodies and particulate filters comprising honeycomb filter bodies
AssigneeCorning Incorporated
InventorPushkar Tandon
Life of this patent
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Abstract
A honeycomb filter body comprises: a clean filter pressure drop of (P1) and a clean filtration efficiency of (FE1); a porous ceramic honeycomb body comprising a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels, the porous ceramic honeycomb body comprising a base clean filter pressure drop (P0) and a base clean filtration efficiency (FE0); and a porous inorganic layer disposed on one or more of the wall surfaces of the porous ceramic honeycomb body.
Claims3
A method for applying an inorganic material to a honeycomb filter body, the method comprising:
- supplying the inorganic material to a duct that is in fluid communication with a porous ceramic honeycomb body comprising a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels, the porous ceramic honeycomb body comprising a base clean filter pressure drop (P0) and a base clean filtration efficiency (FE0);
- depositing the inorganic material on the porous ceramic honeycomb body;
- and
- binding the inorganic material to the porous ceramic honeycomb body to form a porous inorganic layer disposed on one or more of the wall surfaces of the porous ceramic honeycomb body to form the honeycomb filter body;
- the honeycomb filter body comprising:
- a clean filter pressure drop of (P1) and a clean filtration efficiency of (FE1);
- an overall performance parameter of the honeycomb filter body defined as “X”, which according to Formula (I):
- (
- FE
- 1
- -
- FE
- 0
- )
- *
- P
- 0
- (
- P
- 1
- -
- P
- 0
- )
- *
- FE
- 0
- ;
- Formula
-
- (
- I
- )
- and
- a filtration performance defined as “F”, which is according to Formula (II):
- FE
- 1
- -
- FE
- 0
- FE
- 0
- ;
- Formula
-
- (
- II
- )
- wherein X is greater than or equal to 1.75, and F is greater than or equal to 0.25.
46 more elements
A method for applying an inorganic material to a honeycomb filter body, the method comprising:
- supplying the inorganic material to a duct that is in fluid communication with a porous ceramic honeycomb body comprising a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels, the porous ceramic honeycomb body comprising a base clean filter pressure drop (P0) and a base clean filtration efficiency (FE0);
- depositing the inorganic material on the porous ceramic honeycomb body;
- and
- binding the inorganic material to the porous ceramic honeycomb body to form a porous inorganic layer disposed on one or more of the wall surfaces of the porous ceramic honeycomb body to form the honeycomb filter body;
- the porous inorganic layer comprising:
- an average porosity (ε), a mean particle size (dp) in micrometers, and a thickness (tm);
- and
- a morphology parameter of the porous inorganic layer defined as “Y”, which is according to Formula (IV):
- (
- ε
- 6.5
- /
- d
- p
- 0.5
- )
- *
- (
- 1
- -
- ε
- d
- p
- 0.5
- )
- ;
- Formula
-
- (
- IV
- )
- wherein Y is greater than or equal to 0.02.
29 more elements
A method for applying an inorganic material to a honeycomb filter body, the method comprising:
- supplying the inorganic material to a duct that is in fluid communication with a porous ceramic honeycomb body comprising a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels, the porous ceramic honeycomb body comprising a base clean filter pressure drop (P0) and a base clean filtration efficiency (FE0);
- depositing the inorganic material on the porous ceramic honeycomb body;
- and
- binding the inorganic material to the porous ceramic honeycomb body to form a porous inorganic layer disposed on one or more of the wall surfaces of the porous ceramic honeycomb body to form the honeycomb filter body, the porous inorganic layer comprising an average porosity (ε), a mean particle size (dp) in micrometers, and a thickness tm;
- wherein design of the honeycomb filter body and/or porous inorganic layer is based at least in part on one or more of the following parameters:
- an overall performance parameter of the honeycomb filter body defined as “X”, which according to Formula (I):
- (
- FE
- 1
- -
- FE
- 0
- )
- *
- P
- 0
- (
- P
- 1
- -
- P
- 0
- )
- *
- FE
- 0
- ,
- Formula
-
- (
- I
- )
- wherein X is greater than or equal to 1.75;
- a filtration performance of the honeycomb filter body defined as “F”, which is according to Formula (II):
- FE
- 1
- -
- FE
- 0
- FE
- 0
- ,
- Formula
-
- (
- II
- )
- wherein F is greater than or equal to 0.25;
- a pressure drop performance defined as “P”, which is according to Formula (III):
- P
- 1
- -
- P
- 0
- P
- 0
- ,
- Formula
-
- (
- III
- )
- wherein P is less than or equal to 0.25;
- and
- a morphology parameter of the porous inorganic layer defined as “Y”, which is according to Formula (IV):
- (
- ε
- 6.5
- /
- d
- p
- 0.5
- )
- *
- (
- 1
- -
- ε
- d
- p
- 0.5
- )
- ,
- Formula
-
- (
- IV
- )
- wherein Y is greater than or equal to 0.02.
86 more elements
Dependencies are inferred from the claim text.