Chemical apparatus and process disinfecting – deodorizing – preser – For deodorizing of – or chemical purification of – or... – Including solid – extended surface – fluid contact reaction...
Patent
1993-12-02
1997-05-06
Bhat, Nina
Chemical apparatus and process disinfecting, deodorizing, preser
For deodorizing of, or chemical purification of, or...
Including solid, extended surface, fluid contact reaction...
454 53, 454187, 95285, 95287, 55279, 55318, 55327, 553852, 55485, A62B 708, B05B 1512, B01D 4600
Patent
active
056268203
ABSTRACT:
The invention features a clean room and a chemical air filter suitable for use in the air handling system of the clean room directly upstream of high-efficiency particulate air (HEPA) filters. The chemical filter is of the pleated filter type comprising an air permeable, relatively thick web of non-woven fibrous carrier material of pleated form. The web includes a matrix formed of a large multiplicity of synthetic fibers and is characterized in that activated carbon particles are distributed throughout the web, bound in the interstices of the matrix in a manner preventing loss to the air of particles in quantity substantially detrimental to the performance of the HEPA filter. The activated carbon particles are of the type selected to remove the predetermined gas-phase contaminant from the air from the source. The invention also features a non-off gassing filter casing that may easily be installed into existing clean room air handling systems.
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