Patents Examined by Helane E. Meyers
  • Patent number: 5683573
    Abstract: A hydrocarbon feedstock is catalytically reformed in a sequence comprising a continuous-reforming zone, consisting essentially of a moving-bed catalytic reforming zone and continuous regeneration of catalyst particles, and a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic zeolite. The process combination permits higher severity, higher aromatics yields and/or increased throughput in the continuous-reforming zone, thus showing surprising benefits over prior-art processes, and is particularly useful in upgrading existing moving-bed reforming facilities with continuous catalyst regeneration.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: November 4, 1997
    Assignee: UOP
    Inventors: Robert S. Haizmann, John Y. G. Park, Michael B. Russ