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Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof

  • US 6,105,365 A
  • Filed: 04/08/1997
  • Issued: 08/22/2000
  • Est. Priority Date: 04/08/1997
  • Status: Expired due to Fees
First Claim
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1. 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.

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