Regeneration of catalyst/absorber

  • US 5,953,911 A
  • Filed: 02/04/1998
  • Issued: 09/21/1999
  • Est. Priority Date: 02/04/1998
  • Status: Expired due to Term
First Claim
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1. A method of regenerating a devitalized catalyst/absorber comprising an oxidation catalyst component selected from platinum, palladium, rhodium, cobalt, nickel, iron, copper, molybdenum or combinations thereof disposed on a high surface area support and an absorber material selected from a hydroxide, carbonate, bicarbonate or mixture thereof of an alkali or alkaline earth or mixtures thereof and having nitrogen oxides absorbed therein or thereon, said method comprising the steps of:

  • providing a stream of regenerating gas comprising hydrocarbon and an inert carrier gas; and

    passing said stream of regenerating gas over said devitalized catalyst/absorber for an effective time, at an effective temperature and at an effective space velocity to remove said nitrogen oxides from said devitalized absorber to form a regenerated catalyst/absorber.

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