Patents Represented by Attorney, Agent or Law Firm John G. Tglomei
  • Hydrocracking process
    Patent number: 6379532
    Abstract: A hydrocracking process wherein the undesirable production of polynuclear aromatic compounds is controlled by removing a small dragstream of high pressure product stripper bottoms to reject polynuclear aromatic compounds and recovering valuable diesel boiling range hydrocarbons and unconverted feedstock by routing the dragstream to a hot flash separator and subsequently to a divided wall fractionation zone to produce a concentrated stream of polynuclear aromatic compounds while recovering the valuable hydrocarbon compounds.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 30, 2002
    Assignee: UOP LLC
    Inventors: Richard K. Hoehn, Bradford L. Bjorklund