Patent ID: 6620385
Filing Date: 2003-09-16
Classification: B01D

Abstract:
An apparatus for purifying a gas containing a contaminant, comprising:a microparticle-producing section having a source for emitting an ultraviolet ray, a radiation ray or a combination of an ultraviolet ray and a radiation ray; a decomposition section comprising TiO2 as a photocatalyst, and a light source for irradiating said photocatalyst with light; and a removal section for removing an acidic compound or a basic compound; wherein said photocatalyst is fixed to a matrix in the shape of a honeycomb, a wire cloth, a fiber, a rod or a filter; or wherein said photocatalyst is coated on a surface of a wall, a floor or a ceiling that defines a space prevailed by the flow of a gas to be treated; and wherein said decomposition section is connected to said microparticle-producing section.