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US 7,018,449 B2Granted
Filtration media
AssigneePhillips Plastic Corporation
InventorsThomas M. Fitch, Majid Entezarian, James R. Johnson
Life of this patent
Estimating the term…
Abstract
Particles may be used to filter oleo material such as grease from a flow of fluid such as a gas. The particles can be arranged into a bed to filter the oleo material from the fluid. The filtrate substance collect on the inorganic particles. The particles are re-usable, in that they can be subjected to filtrate-separation techniques, e.g., solvent extraction, detergent washing, and centrifugal separation, to separate the oleo material from the particles.
Claims57
A method comprising:
- (a) filtering grease from an air stream using a bed of porous particles, the air stream being channeled from an area where the grease is being heated to another location by a ventilation system, wherein the particles have a mean pore size of about 0.1 microns to 10 microns,
- (b) removing the bed from its position in the air stream;
- (c) separating the grease from the particles using a liquid.
A method comprising:
- filtering grease from an air stream using a bed of particles, the air stream being channeled from an area where the grease is being heated to another location by a ventilation system;
- cyclically separating the grease from the particles using a liquid;
- wherein a mean size of the particles is about 0.1 mm to 4 mm.
A ventilation system comprising:
- a bed of porous particles which is used to remove grease from an air stream where the grease is from heating food, the particles being regenerated using a liquid;
- wherein the ventilation system channels the air stream from a housing through a duct and into the atmosphere;
- and
- wherein a mean size of the particles is about 0.25 mm to 4 mm.
1 more element
A ventilation system comprising:
- a bed of porous particles which is used to remove grease from an air stream where the grease is from heating food, the particles being cyclically regenerated using a liquid, the particles also having a mean pore size of about 0.1 microns to 100 microns;
- wherein the ventilation system channels the air stream from an area where the grease is being heated to another location.
A ventilation system comprising:
- a bed of particles which is used to remove grease from an air stream where the grease is from heating food, the particles being cyclically regenerated using a process comprising solvent extraction, detergent washing, or a combination thereof;
- wherein the ventilation system channels the air stream from an area where the grease is being heated to another location.
A filtration media comprising:
- a plurality of porous particles arranged in a bed, the bed being configured to be positioned in a ventilation system which channels an air stream from an area where grease is being heated to another location, the bed also being configured to remove the grease from the air stream;
- wherein the bed is regenerated using a process comprising solvent extraction, detergent washing, or a combination thereof.
A method comprising:
- (a) filtering grease from an air stream using a bed of porous inorganic particles, the air stream being channeled from an area where the grease is being heated to another location by a ventilation system, wherein a mean size of the particles is about 0.1 mm to 4 mm and the particles have a mean pore size of about 0.1 microns to 100 microns.
- (b) removing the bed from its position in the air stream;
- (c) separating the grease from the particles using a liquid.
A method comprising:
- filtering grease from an air stream using a bed of porous inorganic particles, the air stream being channeled from an area where the grease is being heated to another location by a ventilation system;
- and
- cyclically separating the grease from the particles using a liquid;
- wherein a mean size of the particles is about 0.1 mm to 4 mm;
- and
- wherein the particles have a mean pore size of about 0.1 microns to 100 microns.
3 more elements
A method comprising:
- (a) filtering grease from an air stream using a bed of porous inorganic particles, the air stream being channeled from an area where the grease is being heated to another location by a ventilation system, wherein each of the porous inorganic particles has interconnecting openings extending throughout the particle and opening onto an outer surface of the particle to form a reticulated labyrinth of struts,
- (b) removing the bed from its position in the air stream;
- (c) separating the grease from the particles using a liquid.
Dependencies are inferred from the claim text.