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Multizone catalytic reforming process

  • US 5,858,205 A
  • Filed: 05/13/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Term
First Claim
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1. A process for the catalytic reforming of hydrocarbons comprising contacting a hydrocarbon feedstock in a catalyst system which comprises at least three sequential catalyst zones to obtain a reformate, comprising the steps of:

  • (a) contacting the feedstock with a first catalytic composite consisting essentially of a platinum-group metal component, a metal promoter selected from the group consisting of rhenium, indium and tin, a refractory inorganic oxide, and a halogen component in an first catalyst zone at first reforming conditions to obtain a first effluent;

    (b) contacting the first effluent with an intermediate catalytic composite consisting essentially of a platinum-group metal component, a germanium component, a refractory inorganic oxide, and a halogen component in an intermediate catalyst zone at intermediate reforming conditions to obtain an intermediate effluent; and

    ,(c) contacting the intermediate effluent with a terminal catalytic composite consisting essentially of a platinum-group metal component, a metal promoter selected from the group consisting of rhenium, indium and tin, a refractory inorganic oxide, and a halogen component in a terminal catalyst zone at terminal reforming conditions to obtain a reformate.

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