Patent ID: 6105365
Filing Date: 2000-08-22
Classification: B01D,F01N,Y02T

Abstract:
An apparatus for the concentration and abatement of adsorbable pollutants contained in gaseous streams comprising:(a) an inlet conduit for receiving gases;(b) a single means for controlling the gases from said inlet conduit and dividing such gases into a high flow stream comprising 70-99% of such gases and a low flow stream comprising 1-30% of such gases between at least a first conduit and a second conduit;(c) a first pollutant adsorption means in fluid communication with said first conduit, said first pollutant adsorption means having inlet and outlet conduits, said first pollutant adsorption means comprising: (i) an adsorbent selected from the group consisting of metal oxides, metal hydroxides and mixed metal oxides, (ii) catalytically effective amounts of a metal selected from the group consisting of Pt, Pd, Rh and mixtures of such metals and (iii) means to inject a reductant into the first pollutant adsorption means;(d) a heating source for heating the first pollutant adsorption means to temperatures sufficient to desorb the adsorbed pollutants;(e) a second pollutant adsorption means in fluid communication with said second conduit, said second pollutant adsorption means having inlet and outlet conduits, said second pollutant adsorption means comprising: (i) an adsorbent selected from the group consisting of metal oxides, metal hydroxides and mixed metal oxides, (ii) catalytically effective amounts of a metal selected from the group consisting of Pt, Pd, Rh and mixtures of such metals and (iii) means to inject a reductant into the second pollutant adsorption means; and(f) a heating source for heating the first and second pollutant adsorption means to temperatures sufficient to desorb the adsorbed pollutants.