Patents Represented by Law Firm The M. W. Kellogg Co.
  • FCC metals passivation additives applied to catalyst
    Patent number: 5972208
    Abstract: A process and apparatus for incorporating additives into a circulating inventory of equilibrium catalyst in a fluid catalyst cracking (FCC) unit are disclosed. Hot regenerated catalyst is removed from the FCC regenerator, cooled, optionally subjected to magnetic catalyst separation, and at least a portion of the cooled catalyst is contacted with a solution of an additive material without forming a separated liquid phase. Additive treated catalyst is recycled to the FCC unit, preferably directly into the regenerator.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: October 26, 1999
    Assignee: The M. W. Kellogg Company
    Inventors: Terry L. Goolsby, Dennis C. Kowalczyk, Howard F. Moore