Method for cleaning a particle filter

Details Method for cleaning a particle filter Method for cleaning a particle filter

2004-05-07

2009-12-01

Hill, Jr., Robert J (Department: 1797)

Gas separation: processes

Filtering

With cleaning of filter

C055S282300, C055S523000, C055SDIG010, C055SDIG030, C422S177000

Reexamination Certificate

active

07625433

ABSTRACT:
The invention relates to a method for cleaning a particle filter (1) with the following method steps: a gaseous stream laden with pollutants and/or particles is fed to a particle filter (1) that operates catalytically and/or by filtration, pollutants and/or particles are chemically converted or stored in the particle filter (1), filtrate or ash particles (2) being produced and/or deposited on the particle filter (1). Once the particle filter (1) has been used for a specific period of time, a layer (3, 4) for increasing the through-flow resistance is applied to the layer of filtrate or ash particles (2) in the direction of filtration.

REFERENCES:
patent: 4938787 (1990-07-01), Simmerlein-Erlbacher
patent: 5445745 (1995-08-01), Handtmann
patent: 2002/0077452 (2002-06-01), Braun et al.
patent: 4041127 (1992-02-01), None
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patent: 10148180 (2003-04-01), None
patent: 0341832 (1996-01-01), None
patent: 0930422 (1999-07-01), None
patent: 07068218 (1995-03-01), None
Search report for German priority application 10323735.6 dated Dec. 8, 2003.
PCT form ISA/210 and PCT/ISA/237 from corresponding PCT application, May 24, 2003.

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