Catalytic filter material and method of making same

Details Catalytic filter material and method of making same Catalytic filter material and method of making same

1995-08-15

1997-04-15

Bhat, Nina

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

428 362, 4283166, 502242, 502309, 96135, 96147, 553853, 55514, 442 31, 442 40, B01D 5000, B01D 5334

Patent

active

056206690

ABSTRACT:
The present invention is an improved catalytic filter material for use in removing contaminants such as NO.sub.x from a fluid stream. The filter of the present invention employs composite fibers of expanded polytetrafluoroethylene (PTFE) filled with catalytic particles. The composite fibers are chopped into staple fibers and made into a felt material. Preferably, the felt material is then laminated on at least one side with a protective microporous membrane. The combined filter removes both macro-particles, such as dust, from the filter stream before the dust can clog active catalytic sites and effectively catalytically coverts undesirable contaminants in the fluid stream to acceptable end products.

REFERENCES:
patent: 3925248 (1975-12-01), Moroni et al.
patent: 3953566 (1976-04-01), Gore
patent: 3962153 (1976-06-01), Gore
patent: 4042352 (1977-08-01), Shiga et al.
patent: 4053557 (1977-10-01), Kageyama
patent: 4096227 (1978-06-01), Gore
patent: 4187390 (1980-02-01), Gore
patent: 4220633 (1980-09-01), Pirsh
patent: 4259209 (1981-03-01), Nakane et al.
patent: 4309386 (1982-01-01), Pirsh
patent: 4332698 (1982-06-01), Bernstein et al.
patent: 4358396 (1982-11-01), Bernstein et al.
patent: 4518705 (1985-05-01), Solomon et al.
patent: 4728503 (1988-03-01), Iida et al.
patent: 4732879 (1988-03-01), Kalinowski et al.
patent: 4793981 (1988-12-01), Doyle et al.
patent: 4833877 (1989-05-01), Ahland et al.
patent: 4916110 (1990-04-01), Manniso
patent: 4983434 (1991-01-01), Sassa
patent: 5000624 (1991-03-01), Steiger
patent: 5051391 (1991-09-01), Tomisawa et al.
patent: 5064792 (1991-11-01), Jaras et al.
patent: 5262234 (1993-11-01), Minor et al.
patent: 5304362 (1994-04-01), Madsen
patent: 5324579 (1994-06-01), Sassa et al.
patent: 5342434 (1994-08-01), Wu
patent: 5417743 (1995-05-01), Dauber
patent: 5437900 (1995-08-01), Kuzowski
patent: 5496396 (1996-03-01), Allan et al.
patent: 5500038 (1996-03-01), Dauber et al.

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