Patents Assigned to VOP Inc.
  • Catalyst regeneration method
    Patent number: 4062801
    Abstract: Solid catalysts including solid phosphoric acid catalysts are regenerated in-situ in a multi-step method. A sequence which includes depressurization, soaking in an aromatic hydrocarbon-containing liquid at a high temperature and pressure, depressurization and draining is repeated three times. The regeneration removes polymers formed from olefinic reactants.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: December 13, 1977
    Assignee: VOP Inc.
    Inventors: Vance P. Burton, Michael Z. Mikulicz