High temperature nanofilter, system and method

Details High temperature nanofilter, system and method High temperature nanofilter, system and method

2007-06-26

2007-06-26

Chiesa, Richard L. (Department: 1724)

Gas separation: apparatus

Solid sorbent apparatus

Layered or laminated

C055S523000, C055S524000, C055S527000

Reexamination Certificate

active

11333737

ABSTRACT:
A filter, system and method is provided for filtering nanoparticles in a hot gas, namely particles <about 1 micron in a gas >about 200° C. and further particularly >about 450° C. including diesel exhaust. The filter includes filter media material composed of fibrous filter media having a plurality of fibers and granular filter media having a plurality of granules extending from the surfaces of the fibers. The filter is characterized by a permeability >about 3×10−12m2and an inertial resistance coefficient <about 1×106m−1. The filter captures particles in the Most Penetrating Region (MPR). A filter system includes a nanoparticle filter in series with a diesel exhaust treatment element.

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