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US 7,582,270 B2Granted
Multi-functional substantially fibrous mullite filtration substrates and devices
AssigneeGEO2 Technologies, Inc.
InventorBilal Zuberi
Life of this patent
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Abstract
A diesel particulate filter assembly, and methods for use of such filter assembly, including a housing having an inlet end and an outlet end, a particulate filter portion consisting essentially of mullite fibers and positioned in the housing, an array of honeycomb channels in the filter, a porous wall between adjacent channels, and an exhaust path extending through the inlet end, through the particulate filter portion and though the outlet end.
Claims5
A method of removing particulate matter from an exhaust gas, comprising:
- receiving an exhaust gas into a first channel of a honeycomb porous filter;
- passing at least some of the exhaust gas through a wall to a second channel of the honeycomb porous filter;
- trapping the particulate matter in the porous filter, the porous filter having pores at least partially defined by intertangled mullite fibers, the intertangled mullite fibers bonded into a nonwoven rigid porous matrix;
- and
- exhausting the cleaned exhaust gas from the second channel.
2 more elements
Dependencies are inferred from the claim text.