Method and apparatus for purifying air charged with pollutants

Details Method and apparatus for purifying air charged with pollutants Method and apparatus for purifying air charged with pollutants

B - Operations, Transporting

60

H

204/177, 23/348

B60H 3/06 (2006.01) B01D 53/02 (2006.01) B01D 53/86 (2006.01)

Patent

CA 1179481

ABSTRACT The invention relates to a method and apparatus for purifying air, using both catalytic and sorptive substances. The invention seeks to eliminate pollutants from air, with simultaneous utilization of both sorptive and catalytic substances, while ensuring that the said substances have relatively long lives. This is achieved by feeding air charged with pollutants, such as SO2, NO2, NO and HC compounds, in sequence through a filter, and a soda-lime layer, followed by a partial oxidation of the remaining oxides, i.e. NO to NO2, by a catalyst layer, such as hopcalite. The air is then passed through an activated- charcoal layer, heated by a heating device, and finally passed to a second catalyst layer in order to convert CO into CO2. It is preferred to have a cooling zone subsequent to the hopcalite layer.

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