| abstract |
The field name describes an improved method of air filtration in confined spaces. Improvements in air filtration methods are achieved by the use of catalytically active hot carbonaceous charcoal to remove certain undesirable constituents from contaminated air under ambient temperature conditions. Such carbonaceous charcoal is used as the air filtration medium and incorporated into the air filtration device by any of a variety of techniques. Such devices include pollutants such as NO x , NO 2 , SO x , H 2 S, mercaptans, light aliphatic gases such as butane and proman, from enclosed or confined structures such as buildings or automobiles, aircraft, trucks, agricultural vehicles, and the like. Used to remove other compounds such as benzene, hexane, toluene, xylene, amines, and the like. |