Patents Represented by Attorney Hoatson, Jr. James R.
  • Patent number: 4148751
    Abstract: A method for regenerating a coke-contaminated cracking catalyst with the simultaneous carefully controlled catalyzed combustion of CO to CO.sub.2 within a regeneration zone to produce regenerated catalyst and flue gas. Novel features of the method include adding to the regeneration zone, independently of the cracking catalyst, a supported CO oxidation promoter and combusting CO to CO.sub.2 in the presence of the promoter and regenerated catalyst. A supported oxidation promoter may be added to the regeneration zone in amounts to control the CO concentration in the flue gas, a regeneration zone temperature, or the residual carbon concentration on regenerated catalyst.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: April 10, 1979
    Assignee: UOP Inc.
    Inventors: Charles L. Hemler, Jr., Laurence O. Stine