Patent ID: 6336998
Filing Date: 2002-01-08
Classification: A61L

Abstract:
A process for treating waste gases, comprising the steps of:(1) preparing a UV lamp for treating waste gases, comprising the steps of: (i) formulating a photocatalyst sol coating; (ii) dip coating a glass fiber cloth with said photocatalyst sol, (iii) drying and sintering said photocatalyst sol coated glass fiber cloth into a photocatalyst-coated glass fiber cloth; (iv) impregnating said photocatalyst-coated glass fiber cloth with a solution of an oxidation catalyst selected from the group consisting of Pd, Pr, Au, Ag, MoO3, Nb2O5, V2O5, CeO2, and Cr2O3; (v) drying again said impregnated photocatalyst-coated glass fiber cloth; and (vi) providing a UV lamp tube and encompassing at least a portion of said UV lamp tube with said impregnated photocatalyst-coated glass fiber cloth; and, (2) employing said UV lamp devoid of a closed container for treating waste gases, whereby heat energy radiated from said UV lamp heats air adjacent thereto and causes a natural convection of waste gases that diffuse through interstitial spaces within said impregnated photocatalyst-coated glass fiber cloth into a gap between said UV lamp tube and said impregnated photocatalyst-coated lass fiber cloth, where, said waste gases undergo photocatalytical degradation and oxidation and then back diffuse by natural convection through said interstitial spaces within said impregnated photocatalyst-coated glass fiber cloth away from said UV lamp tube.