Method for the reactivation of spent alumina-supported hydrotreating catalysts

  • US 5,254,513 A
  • Filed: 05/20/1991
  • Issued: 10/19/1993
  • Est. Priority Date: 05/20/1991
  • Status: Expired due to Fees
First Claim
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1. A process for reactivating a spent alumina-supported hydrodesulfurization catalyst used in treating metal contaminated hydrocarbon feedstocks, consisting essentially of an alumina support and containing one or more metals selected from the group consisting of cobalt, molybdenum, tungsten, nickel, phosphorus and vanadium which comprises:

  • a) stripping process oil from the spent catalyst by washing with a hydrocarbon solvent and drying the washed catalyst thus obtaining free-flowing spent catalyst,b) contacting the free-flowing spent alumina-supported catalyst in a steam treatment zone with steam at a temperature ranging from about 1000°

    to about 1250°

    F., andc) recovering a reactivated alumina-supported catalyst from the said steam-treating zone.

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