Back to results
US 6,432,177 B1Granted
Air filter assembly for low temperature catalytic processes
AssigneeDonaldson Company, Inc.
InventorsAndrew James Dallas, Mark Alan Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
Life of this patent
Estimating the term…
Abstract
An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
Claims14
A system for producing power, the system comprising
- (a) an air filter assembly comprising:
- (i) a housing having an inlet and an outlet, the inlet receiving dirty atmospheric air to the filter assembly, and the outlet receiving clean air from the filter assembly;
- (ii) a filter element disposed within said housing, the filter element comprising:
- (A) a physical filter portion constructed and arranged to remove particulate contaminants from the dirty air;
- and
- (B) a chemical filter portion constructed and arranged to remove chemical contaminants from the dirty air;
- (b) a fuel cell having an air intake port;
- said air filter assembly constructed and arranged to provide clean air from the outlet of the filter assembly to the intake port of the fuel cell.
5 more elements
A filter assembly for use with a fuel cell, the filter assembly comprising:
- (a) a housing having an inlet and an outlet, the inlet receiving dirty air into the filter assembly, and the outlet receiving clean air from the filter assembly;
- (b) a filter element disposed within said housing, the filter element comprising:
- (i) a physical filter portion constructed and arranged to remove particulate contaminants from the dirty air;
- (ii) a chemical filter portion constructed and arranged to remove chemical contaminants from the dirty air;
- the chemical filter portion comprising:
- (A) a first portion constructed and arranged to remove ammonia and amines from the dirty air, the first portion comprising impregnated activated carbon adsorption media;
- (B) a second portion constructed and arranged to remove acidic gases and organic materials from the dirty air, the second portion comprising impregnated activated carbon adsorption media;
- and
- (C) a third portion constructed and arranged to oxidize contaminants in the dirty air, the third portion comprising catalyst material.
6 more elements
Dependencies are inferred from the claim text.