Title:
LAYERED OR MIXED SORBENT BED PROTECTIVE FILTRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/069357
Kind Code:
A3
Abstract:
A filtration device (100, 300) including - a fluid-impermeable housing (102, 302, 502) having a gas inlet (104, 304, 504) and outlet (106, 306, 506), and - containing within the housing first filter media (118, 518) particles (120, 320, 520) of an extended surface area substrate and containing at least one metal impregnant, and second filter media (122, 522) particles (124, 324, 524) of an extended surface area zirconium hydroxide substrate and zinc (hydr)oxide. The device may be used in atmospheres containing various harmful gases, and may provide particularly useful improvements in NOxbreakthrough times compared to a device containing only the first filter media particles or only the second filter media particles.
Inventors:
ROSSIN JOSEPH A (US)
BILLINGSLEY BRITTON G (US)
BREY LARRY A (US)
BUECHTER WILLIAM F (US)
LEGARE PIERRE (CA)
MAANUM DEREK M (US)
PETERSON GREGORY W (US)
BILLINGSLEY BRITTON G (US)
BREY LARRY A (US)
BUECHTER WILLIAM F (US)
LEGARE PIERRE (CA)
MAANUM DEREK M (US)
PETERSON GREGORY W (US)
Application Number:
PCT/US2014/051597
Publication Date:
July 02, 2015
Filing Date:
August 19, 2014
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
US ARMY ECBC (US)
ROSSIN JOSEPH A (US)
US ARMY ECBC (US)
ROSSIN JOSEPH A (US)
International Classes:
B01J20/06; B01D27/02; B01D27/14; B01D39/20; B01D46/00; A62B19/00
Foreign References:
| US6344071B1 | 2002-02-05 | |||
| EP2246110A1 | 2010-11-03 |
Other References:
GREGORY W. PETERSON ET AL: "Zirconium Hydroxide as a Reactive Substrate for the Removal of Sulfur Dioxide", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 48, no. 4, 18 February 2009 (2009-02-18), pages 1694 - 1698, XP055186289, ISSN: 0888-5885, DOI: 10.1021/ie801403h
GREGORY W. PETERSON ET AL: "Removal of Chlorine Gases from Streams of Air Using Reactive Zirconium Hydroxide Based Filtration Media", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 51, no. 6, 15 February 2012 (2012-02-15), pages 2675 - 2681, XP055186303, ISSN: 0888-5885, DOI: 10.1021/ie200809r
GREGORY W. PETERSON ET AL: "Removal of Chlorine Gases from Streams of Air Using Reactive Zirconium Hydroxide Based Filtration Media", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 51, no. 6, 15 February 2012 (2012-02-15), pages 2675 - 2681, XP055186303, ISSN: 0888-5885, DOI: 10.1021/ie200809r
Attorney, Agent or Firm:
GOVER, Melanie G., et al. (Post Office Box 33427Saint Paul, Minnesota, US)
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