Patents Examined by Thuan Dlnh Dang
  • Alkylation process with settler effluent recycle
    Patent number: 7371918
    Abstract: A system and/or process for increasing the isobutane to olefin ratio in an alkylation process/system is disclosed. The system and/or process includes provisions for charging a portion of the settler effluent as a feed to at least one reaction zone downflow from the first reaction zone of a multi-zone alkylation reactor along with a portion of the olefin feed to the multi-zone alkylation reactor.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: May 13, 2008
    Assignee: UOP LLC
    Inventors: Robert M. Gray, Keith W. Hovis