With Pitch, Tar, Tar Oil, Or Bitumen Patents (Class 44/561)
  • Integrated process for bitumen recovery, separation and emulsification for steam generation
    Patent number: 7294156
    Abstract: The invention relates to a process for splitting bitumen into two fractions and rendering a heavier bottom fraction as a useable emulsion fuel. The process is particularly effective in creating an alternate fuel to natural gas in a steam-based bitumen recovery process wherein bitumen is recovered from an underground reservoir.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: November 13, 2007
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Tapantosh Chakrabarty, Mainak Ghosh
  • Desulfurization of solid carbonaceous fuels by coagglomeration with sulfur sorbents
    Patent number: 5284497
    Abstract: A solid carbonaceous fuel having reduced sulfur dioxide emission upon combustion is provided. The fuel comprises a coagglomerate formed of coke or coal, a novel silica-enhanced sulfur-dioxide sorbent and a bitumen binder.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: February 8, 1994
    Assignee: Alberta Oil Sands Technology and Research Authority
    Inventors: Nosa O. Egiebor, Joshua U. Otaigbe